From patchwork Fri Oct 13 22:47:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421815 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 63976CDB483 for ; Fri, 13 Oct 2023 22:48:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5F6B310E646; Fri, 13 Oct 2023 22:48:36 +0000 (UTC) Received: from mail-il1-x12c.google.com (mail-il1-x12c.google.com [IPv6:2607:f8b0:4864:20::12c]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0A7AE10E071; Fri, 13 Oct 2023 22:48:32 +0000 (UTC) Received: by mail-il1-x12c.google.com with SMTP id e9e14a558f8ab-35769ea3194so3324195ab.1; Fri, 13 Oct 2023 15:48:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237311; x=1697842111; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=e6NIZdlLmgRQPJbwwmBZ102ypc9HsrQnlZpRMUUA7Yk=; b=g7sUi2JU3ixP2zKDfu+0XupaTVBZTh9Vy8FvdgoCBiYMs14uHQlq5pGW8tvG8FUcSJ 2Dt/IB52HwC7BEY3Kq9TS8bun4lfRTRK/vdcLsHrKDIRTWW4TKUYMj4/Uf45f6Y+Ot3R 54VmQXK7/BdCplQh2Op0KDCyOF3Zq9ut/C/1DHT2m3yDMCGDu2CN1VHQw/4AiPzsnCYe vh6asqeF6UiZr6S3XdEBMkzweyG8UY0UJoFJ07E8jxmUTLfhkaehibt5iVV8QmbxPUAh UVhhYsEQHcXmHj1RLRwxQbApv5oCOu4equ1h22xMpQ0/G0Tec5kW34pE4uHrudp2FqOE 7PrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237311; x=1697842111; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=e6NIZdlLmgRQPJbwwmBZ102ypc9HsrQnlZpRMUUA7Yk=; b=IYEG8XTQ+IuLfdIdFBZj3yS/snutvW/SeUYVPLo/YgnTJqQa+NnUd4H1R5zVmQqAy0 vNwuLe8dLCyB2xtdBeHo376hmCcRytnw5SF4VC/XRad5/7TR4rSG7tHsT4Gj9rmtPoPn TWlGWUChIDPIMbm9mV2Dk0gwyuG9qYJsm+bEZFnato6yTmFAkf2PAFZhJRjImjFMJUUy pZfOC9J7pYCBYHGfPy65riDyewpT11rp/CaQWGCxQy7EFqd9H8dq3rG43e8DkkJ6xxhC c7QuxDJDEI6cmw7rA2mGShVpMhnRLbnSrMSqPqJHdwO6rPCeatPCO6x40ei9DN89i0eN Zghw== X-Gm-Message-State: AOJu0YzE39w0TpZTjDmjrmcSjn7IenOo0sC35I+nP+V8y/txndwl7E9m +PdKh1C9YNGYV8Juj64Oluc= X-Google-Smtp-Source: AGHT+IFA5f7XOQ/uqAKJYGMLvZKg+0KHzwGrvWYPW/qdlHycTjD98B73OaNojeXhn7vC/vD7isrjvQ== X-Received: by 2002:a92:d14f:0:b0:357:6de0:4f46 with SMTP id t15-20020a92d14f000000b003576de04f46mr1371393ilg.6.1697237311232; Fri, 13 Oct 2023 15:48:31 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:30 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 01/25] test-dyndbg: fixup CLASSMAP usage error Date: Fri, 13 Oct 2023 16:47:53 -0600 Message-ID: <20231013224818.3456409-2-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" more careful reading of test output reveals: lib/test_dynamic_debug.c:103 [test_dynamic_debug]do_cats =pmf "doing categories\n" lib/test_dynamic_debug.c:105 [test_dynamic_debug]do_cats =p "LOW msg\n" class:MID lib/test_dynamic_debug.c:106 [test_dynamic_debug]do_cats =p "MID msg\n" class:HI lib/test_dynamic_debug.c:107 [test_dynamic_debug]do_cats =_ "HI msg\n" class unknown, _id:13 That last line is wrong, the HI class is declared. But the enum's 1st val (explicitly initialized) was wrong; it must be _base, not _base+1 (a DECLARE_DYNDBG_CLASSMAP[1] param). So the last enumeration exceeded the range of mapped class-id's, which triggered the "class unknown" report. I intentionally coded in an error, but forgot to verify its detection and remove it. RFC: This patch fixes a bad usage of DECLARE_DYNDBG_CLASSMAP(), showing that it is too error-prone. As noted in test-mod comments: * Using the CLASSMAP api: * - classmaps must have corresponding enum * - enum symbols must match/correlate with class-name strings in the map. * - base must equal enum's 1st value * - multiple maps must set their base to share the 0-62 class_id space !! * (build-bug-on tips welcome) Those shortcomings could largely be fixed with a __stringify_list (which doesn't exist,) used in DECLARE_DYNDBG_CLASSMAP to stringify __VA_ARGS__. Then, API would accept DRM_UT_* values literally; all the categories, in order, and not their stringifications, which created all the usage complications above. [1] name changes later to DYNDBG_CLASSMAP_DEFINE Signed-off-by: Jim Cromie --- lib/test_dynamic_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c index 8dd250ad022b..a01f0193a419 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -75,7 +75,7 @@ DD_SYS_WRAP(disjoint_bits, p); DD_SYS_WRAP(disjoint_bits, T); /* symbolic input, independent bits */ -enum cat_disjoint_names { LOW = 11, MID, HI }; +enum cat_disjoint_names { LOW = 10, MID, HI }; DECLARE_DYNDBG_CLASSMAP(map_disjoint_names, DD_CLASS_TYPE_DISJOINT_NAMES, 10, "LOW", "MID", "HI"); DD_SYS_WRAP(disjoint_names, p); From patchwork Fri Oct 13 22:47:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421814 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4AE5ACDB482 for ; Fri, 13 Oct 2023 22:48:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8DB0510E649; Fri, 13 Oct 2023 22:48:35 +0000 (UTC) Received: from mail-il1-x12e.google.com (mail-il1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2263810E642; Fri, 13 Oct 2023 22:48:33 +0000 (UTC) Received: by mail-il1-x12e.google.com with SMTP id e9e14a558f8ab-351367c8fcdso9403815ab.3; Fri, 13 Oct 2023 15:48:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237312; x=1697842112; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=5ctyB3lbzkdQhDzqOoTWBErv3Q5efkvJrKvFBj8oTC8=; b=KQWaa3ybabtNRqw2kFV6JCCRL+yTIv8ffRCD6rwiymZIHECss7VO7Y+PLMMda2pqwu eKlYL+b45lHmo/Brv9c229GyJsqKuMVg4xW/TFSce6iQmMPkMOuyZOTA3AA9henbt+hj 0UmhL9j8wgdW1r6pYwgEVpR8BE2Rx7Z+T8+Ejz0JP1LPw4n1Jjy9tFAsFKFpLTC0F126 wzYLmtVZdXWzKiQhpPPt5I3AXsO9c1+x0ZpnViCovV9w9kjb4oB0qJymiNGO0G4g02Rs +PvO0XW1E9IX2NaZjRHOZu2NvX5STPP5DlcXL3Cm6M/39TdK7ZlypkeAemnsThfx59hG GKsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237312; x=1697842112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5ctyB3lbzkdQhDzqOoTWBErv3Q5efkvJrKvFBj8oTC8=; b=B5zU905V0FQcqt7YHFLlzJuAepn2nRXY34JnNr2QEp9jl8OgiUOWUQjswbtJcyOhFn a8qT2Oe8qcA/zbPxGITiN10fB1ou6dzYVqwsEPvpvtCqv0+UcE5nmVg4wiwx2QRkqmlo 1eUr4rRl2UFGySPiYMeHrT5Xdejnnx77okFkQxaGusM0sMXBS/peLvZsfgCyhJ0wFsBJ 2o9U66+XDG/6o9WmGtV0Bnm3PkXYZDfyzOIABOnUv37Qgr2mkccwi9eYDQQpdNTIMF/H ANzSrLqtKRLUYcko/gp8ZU+K+ctx5etDMDVYTYgCSzx5kpG3pn4mkZ6bm4OVhp/XHX3X 5Srw== X-Gm-Message-State: AOJu0YzyI08aIw7is1OAVI60UhwZJNDKrBVuG3sifSwz2F6SA0ScoHXw sZ6VELbBjSo1Pa9jwbheIGk= X-Google-Smtp-Source: AGHT+IGrDx/xhixmqvzmaR/QNUT5+O9N36ypuiAiSw2lR0C8FgpfvIsuC3aggKtg532I+m11zDgKSQ== X-Received: by 2002:a05:6e02:1d89:b0:34f:2756:8fd with SMTP id h9-20020a056e021d8900b0034f275608fdmr33304624ila.9.1697237312386; Fri, 13 Oct 2023 15:48:32 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:32 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 02/25] dyndbg: reword "class unknown, " to "class:_UNKNOWN_" Date: Fri, 13 Oct 2023 16:47:54 -0600 Message-ID: <20231013224818.3456409-3-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This appears in the control-file to report an unknown class-name, which indicates that the class_id is not authorized, and dyndbg will ignore changes to it. Generally, this means that a DYNDBG_CLASSMAP_DEFINE or DYNDBG_CLASSMAP_USE is missing. But the word "unknown" appears in quite a few prdbg formats, so thats a suboptimal search term to find occurrences of the problem. Thus change it to "_UNKNOWN_" which properly shouts the condition. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 6fba6423cc10..ceb3067a5c83 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1151,7 +1151,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p) if (class) seq_printf(m, " class:%s", class); else - seq_printf(m, " class unknown, _id:%d", dp->class_id); + seq_printf(m, " class:_UNKNOWN_ _id:%d", dp->class_id); } seq_puts(m, "\n"); From patchwork Fri Oct 13 22:47:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421816 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5D999CDB483 for ; Fri, 13 Oct 2023 22:48:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E347010E657; Fri, 13 Oct 2023 22:48:37 +0000 (UTC) Received: from mail-il1-x130.google.com (mail-il1-x130.google.com [IPv6:2607:f8b0:4864:20::130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 416A510E644; Fri, 13 Oct 2023 22:48:34 +0000 (UTC) Received: by mail-il1-x130.google.com with SMTP id e9e14a558f8ab-3576121362eso5246275ab.1; Fri, 13 Oct 2023 15:48:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237313; x=1697842113; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=1C+2NMg1JH09l8lpRwB0Ubzh+mfktnl5vVkwETAlRt8=; b=BQRUlr9ZYfUa2KQTYCD75B1w/wxApZ84cvYOk2gwy3kQOlo6e5oZI7poBjX+DglVgD TqxCF/+mOuEcRGcugKy2DPtlo101gVZEgk0Eb9wyniCGfQMQtlFp2JF0K34Kn1nT9Q4O KD9uKV158BV/v4ZOjvK0ETql/lWQKwOO6efJlZmj4Z3fqJKXJ+o5OG4c59RGvp/gNTXT 3S/ZvnSDpu4AlPIsUZ2Nzuv1Kt2P7WI/doqsjY4nmPYfEJRu5XQCnYUzyxeJzFAnT+fe 98gtVELp/H87WhwzhjyQ2OKQSWXptVybPMWfqG2rdoq6At8JEdWC/M/R/v6Vd3uRUMg0 jgUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237313; x=1697842113; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1C+2NMg1JH09l8lpRwB0Ubzh+mfktnl5vVkwETAlRt8=; b=Fiu0qz/RRHnfs6XBkUdsRDEMXusgA6a22LMhYUzpnINowc8FWRHMKhxu7Df9t8Q6rD bKuz6PrbEMHHfu9/txxnmEfE8tw2sDlFvsfbhcEEDHamrGfH2ekxRgcQyUV25y0sJaVu vKbanh4JldgZiw+OiznZZ3bQY447q0MRHrMZv/6p9w2RNg8j3vMA+0c4/TKgVQe03gIh dKKx/lkX7D2D9aD2fKwbu3029NEmYEQohkmEZQJhW+yrrKwJ0Xzmu2ujESXIcAws8UUX YUy05eVGR+c7NCNB0BbjZ+mfqDXXkeBYBsuWpljXt5XVCdxt4nt1uuopP5c4d/dYPUnh x90w== X-Gm-Message-State: AOJu0Yy0EFltaePj817K2E8/bJPltV5s8kmSaHPG4BNJ6EW4L/wXTf55 m5Ix0ffXRlxiA8LrWDDp0T4= X-Google-Smtp-Source: AGHT+IERN8pJIP8+ddoE+eB01U1+UXtsDPSDnnzIVYSoLKnjpR6o8aO6/OIr3x06+l+lRtKcnjJmFQ== X-Received: by 2002:a92:c56b:0:b0:34f:f5a4:3e68 with SMTP id b11-20020a92c56b000000b0034ff5a43e68mr37533699ilj.30.1697237313527; Fri, 13 Oct 2023 15:48:33 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:33 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 03/25] dyndbg: make ddebug_class_param union members same size Date: Fri, 13 Oct 2023 16:47:55 -0600 Message-ID: <20231013224818.3456409-4-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" struct ddebug_class_param keeps a ref to the state-storage of the param, make both flavors use the same unsigned long under-type. ISTM this is simpler and safer. Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 2 +- lib/dynamic_debug.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 4fcbf4d4fd0a..5231aaf361c4 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -124,7 +124,7 @@ struct _ddebug_info { struct ddebug_class_param { union { unsigned long *bits; - unsigned int *lvl; + unsigned long *lvl; }; char flags[8]; const struct ddebug_class_map *map; diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index ceb3067a5c83..b984ce338921 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -796,7 +796,7 @@ int param_get_dyndbg_classes(char *buffer, const struct kernel_param *kp) case DD_CLASS_TYPE_LEVEL_NAMES: case DD_CLASS_TYPE_LEVEL_NUM: - return scnprintf(buffer, PAGE_SIZE, "%d\n", *dcp->lvl); + return scnprintf(buffer, PAGE_SIZE, "%ld\n", *dcp->lvl); default: return -1; } From patchwork Fri Oct 13 22:47:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421817 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 287DECDB485 for ; Fri, 13 Oct 2023 22:49:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C0D410E65C; Fri, 13 Oct 2023 22:48:39 +0000 (UTC) Received: from mail-il1-x12e.google.com (mail-il1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 62F9310E646; Fri, 13 Oct 2023 22:48:35 +0000 (UTC) Received: by mail-il1-x12e.google.com with SMTP id e9e14a558f8ab-3512fae02ecso9985425ab.2; Fri, 13 Oct 2023 15:48:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237314; x=1697842114; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ozAe5gpJ31ZrBM/LVU4xoKo5OnQQtUx8zWJXyt9x1yU=; b=mFuYRtwEoY8IHYQS0PBN0XwBBzMEVqw95k4GllsqNQNMr62lpfzvp5Y/RaSE/ab5Oq 0h04nnfUd9yOEgrZ1iEg7lAk3WcGMxAVD8fsS0u+l6RK8U3E1+u0Zp/B9EVF0O2hgDbZ g9ltoWVnsajZPx0Pws81RW3hUWnYzVHbKhzx6AcHxblwYuRKR0xgH2wvMKmZrWfKbwuT LzEJlRcuaiJSPo2n6bH6D0V4swngxfjZTPP3E03JoWcCN3RdvnSGYCr78V7NGWudyk7H /xA7QfQuAxD/dZrB9XWb4Cwr6JESDPR6bDMHXTDbsH13JEeeiMoBPsv0itLIpyr7E0Nt Umjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237314; x=1697842114; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ozAe5gpJ31ZrBM/LVU4xoKo5OnQQtUx8zWJXyt9x1yU=; b=Uxz4MQouMsQLC+Xx9oEs3i1W5wwPSELP4VYayr2jX5ifABpwdGSZPo2UPPxKaEYSEQ PNzH/rSgLRDxrampK+neYsVU474c/1rdJLov5F4WcXpwuLYWW4kpSllAiAwOvQ6/a8G6 PCvSdL7m6QCY9AH5kIRczAX9AL11RdfTr6oAiJF3nYYjWArLlgyhypttKRRYfql5mBCu 6yUenNmUFG8BXI80KZrni6+/C5eka35ULODWaFsJIQHbEnIvqTM8bG/PyxyZWQ9ndl5R yF/HeuTphMHIG13B/csHSrxR2z2PEd7dwwe1r4xMwBhoDZptU5GHSSgL2N4W9GwLHOgS r8jw== X-Gm-Message-State: AOJu0Yyx70TzBU/z78m9DlSD26x1F3fq6qw8akLoT9HVPJVh5B6HbP8r 3sWIdUwMU21m78kyrcILg7M= X-Google-Smtp-Source: AGHT+IGaJpYHUd4SXm5lAfYx9BJDuOOXYnyArpz72PZjZu9AMUCp5i8PziTIUmheWZ8b8NcNEE99KQ== X-Received: by 2002:a05:6e02:1b06:b0:351:4e9f:5606 with SMTP id i6-20020a056e021b0600b003514e9f5606mr37208344ilv.10.1697237314643; Fri, 13 Oct 2023 15:48:34 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:34 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 04/25] dyndbg: replace classmap list with a vector Date: Fri, 13 Oct 2023 16:47:56 -0600 Message-ID: <20231013224818.3456409-5-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Classmaps are stored/linked in a section/array, but are each added to the module's ddebug_table.maps list-head. This is unnecessary; even when ddebug_attach_classmap() is handling the builtin section (with classmaps for multiple builtin modules), its contents are ordered, so a module's possibly multiple classmaps will be consecutive in the section, and could be treated as a vector/block, since both start-addy and subrange length are in the ddebug_info arg. So this changes: struct ddebug_class_map drops list-head link. struct ddebug_table drops the list-head maps, and gets: classes & num_classes for the start-addy and num_classes, placed to improve struct packing. The loading: in ddebug_attach_module_classes(), replace the for-the-modname list-add loop, with a forloop that finds the module's subrange (start,length) of matching classmaps within the possibly builtin classmaps vector, and saves those to the ddebug_table. The reading/using: change list-foreach loops in ddebug_class_name() & ddebug_find_valid_class() to walk the array from start to length. Also: Move #define __outvar up, above an added use in a fn-prototype. Simplify ddebug_attach_module_classes args, ref has both addy,len. no functional changes Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 1 - lib/dynamic_debug.c | 61 ++++++++++++++++++----------------- 2 files changed, 32 insertions(+), 30 deletions(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 5231aaf361c4..b53217e4b711 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -83,7 +83,6 @@ enum class_map_type { }; struct ddebug_class_map { - struct list_head link; struct module *mod; const char *mod_name; /* needed for builtins */ const char **class_names; diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index b984ce338921..a3be2e7c8c84 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -45,10 +45,11 @@ extern struct ddebug_class_map __start___dyndbg_classes[]; extern struct ddebug_class_map __stop___dyndbg_classes[]; struct ddebug_table { - struct list_head link, maps; + struct list_head link; const char *mod_name; - unsigned int num_ddebugs; struct _ddebug *ddebugs; + struct ddebug_class_map *classes; + unsigned int num_ddebugs, num_classes; }; struct ddebug_query { @@ -147,13 +148,15 @@ static void vpr_info_dq(const struct ddebug_query *query, const char *msg) query->first_lineno, query->last_lineno, query->class_string); } +#define __outvar /* filled by callee */ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table const *dt, - const char *class_string, int *class_id) + const char *class_string, + __outvar int *class_id) { struct ddebug_class_map *map; - int idx; + int i, idx; - list_for_each_entry(map, &dt->maps, link) { + for (map = dt->classes, i = 0; i < dt->num_classes; i++, map++) { idx = match_string(map->class_names, map->length, class_string); if (idx >= 0) { *class_id = idx + map->base; @@ -164,7 +167,6 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons return NULL; } -#define __outvar /* filled by callee */ /* * Search the tables for _ddebug's which match the given `query' and * apply the `flags' and `mask' to them. Returns number of matching @@ -1111,9 +1113,10 @@ static void *ddebug_proc_next(struct seq_file *m, void *p, loff_t *pos) static const char *ddebug_class_name(struct ddebug_iter *iter, struct _ddebug *dp) { - struct ddebug_class_map *map; + struct ddebug_class_map *map = iter->table->classes; + int i, nc = iter->table->num_classes; - list_for_each_entry(map, &iter->table->maps, link) + for (i = 0; i < nc; i++, map++) if (class_in_range(dp->class_id, map)) return map->class_names[dp->class_id - map->base]; @@ -1197,30 +1200,31 @@ static const struct proc_ops proc_fops = { .proc_write = ddebug_proc_write }; -static void ddebug_attach_module_classes(struct ddebug_table *dt, - struct ddebug_class_map *classes, - int num_classes) +static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug_info *di) { struct ddebug_class_map *cm; - int i, j, ct = 0; + int i, nc = 0; - for (cm = classes, i = 0; i < num_classes; i++, cm++) { + /* + * Find this module's classmaps in a subrange/wholerange of + * the builtin/modular classmap vector/section. Save the start + * and length of the subrange at its edges. + */ + for (cm = di->classes, i = 0; i < di->num_classes; i++, cm++) { if (!strcmp(cm->mod_name, dt->mod_name)) { - - v2pr_info("class[%d]: module:%s base:%d len:%d ty:%d\n", i, - cm->mod_name, cm->base, cm->length, cm->map_type); - - for (j = 0; j < cm->length; j++) - v3pr_info(" %d: %d %s\n", j + cm->base, j, - cm->class_names[j]); - - list_add(&cm->link, &dt->maps); - ct++; + if (!nc) { + v2pr_info("start subrange, class[%d]: module:%s base:%d len:%d ty:%d\n", + i, cm->mod_name, cm->base, cm->length, cm->map_type); + dt->classes = cm; + } + nc++; } } - if (ct) - vpr_info("module:%s attached %d classes\n", dt->mod_name, ct); + if (nc) { + dt->num_classes = nc; + vpr_info("module:%s attached %d classes\n", dt->mod_name, nc); + } } /* @@ -1253,10 +1257,9 @@ static int ddebug_add_module(struct _ddebug_info *di, const char *modname) dt->num_ddebugs = di->num_descs; INIT_LIST_HEAD(&dt->link); - INIT_LIST_HEAD(&dt->maps); if (di->classes && di->num_classes) - ddebug_attach_module_classes(dt, di->classes, di->num_classes); + ddebug_attach_module_classes(dt, di); mutex_lock(&ddebug_lock); list_add_tail(&dt->link, &ddebug_tables); @@ -1369,8 +1372,8 @@ static void ddebug_remove_all_tables(void) mutex_lock(&ddebug_lock); while (!list_empty(&ddebug_tables)) { struct ddebug_table *dt = list_entry(ddebug_tables.next, - struct ddebug_table, - link); + struct ddebug_table, + link); ddebug_table_free(dt); } mutex_unlock(&ddebug_lock); From patchwork Fri Oct 13 22:47:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421818 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A6919CDB47E for ; Fri, 13 Oct 2023 22:49:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5782E10E65F; Fri, 13 Oct 2023 22:48:40 +0000 (UTC) Received: from mail-il1-x12d.google.com (mail-il1-x12d.google.com [IPv6:2607:f8b0:4864:20::12d]) by gabe.freedesktop.org (Postfix) with ESMTPS id 78D5D10E650; Fri, 13 Oct 2023 22:48:36 +0000 (UTC) Received: by mail-il1-x12d.google.com with SMTP id e9e14a558f8ab-3575287211bso9204295ab.1; Fri, 13 Oct 2023 15:48:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237315; x=1697842115; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nT2UcGPT6Cy6K92hgVjA+Vm5zzO1oFmjE5g1Jwvt+zM=; b=Nyy9K9w/fvW/IyPXxbGae3aeAY6GtaQsLoYbPTWNA8Icq17Q9C4jurA7oVnbeB82Yy 7Wi2wnXXzewxHZBTzYpAQQrb23e7S3rFD4s/ka+q7zzHgBq/hs65S1dNgO7rHwpTnji0 faEVZApmdZsPZW4tVXNncN/gI/vwGMt0watnezcKaqd0c6Iih11a+fxaCE2g7G3vim8A 8942U2oGDvR12iVsT1h5pQ0zf/LAgnyOcVBYiWu5aqfWNlsaBjHV+s9dAU/ThvUXWD22 b7ci8umIkO0C5dhSsMhI9ibf1bGBZutCGsyHw5mKpkhwb+jyOfT8N4P2TltHN3pUq1wS dyBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237315; x=1697842115; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nT2UcGPT6Cy6K92hgVjA+Vm5zzO1oFmjE5g1Jwvt+zM=; b=ZK7MJgBqfa3wf+/PnRCyLRrENw//N5AIXEv8wlHtZmA2TE13UygZ1/LR5ANihkjhnm 1Duyegt5gEk9kUzEjeYUxTZH5fDOfuMOzzhKFun6T4VVQxCQyLYX+zuGZSq/h5/PL8Tc l9DR3HKBG8gU2x+b2WHHINp86lIpUHx0dU3CNAF6F+gnPbclyMSwIVWY0fsMDjib+9Zv QH3BRpOtFU6waCHetnfNHl0AyZzhdOqEC7wsL+8meNbdCTRaq3a04wRGQXzkeo+GUzsR /2fjIj5LnQxAwjbIkdyYhR7xoCUCQBlQ/yt3GDnW+yloSzIo6dyHfwwGQmrgS9oepdBg Sxdw== X-Gm-Message-State: AOJu0YzEXCZBaIksuFt3CtLw403A6wXDy7cd3KhslHAb1bZmXEYRne9D 5ZoiS78dV6P+gdRiEC4t6/o= X-Google-Smtp-Source: AGHT+IGYdHuhKae/xePMG7+VoJKNb8Om+mPyIPnYccbsUmZ9/B9utptrIfAN7IH2lmG02yFLWl+6VA== X-Received: by 2002:a05:6e02:1be4:b0:34c:e7a3:894 with SMTP id y4-20020a056e021be400b0034ce7a30894mr35348531ilv.16.1697237315697; Fri, 13 Oct 2023 15:48:35 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:35 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 05/25] dyndbg: ddebug_apply_class_bitmap - add module arg, select on it Date: Fri, 13 Oct 2023 16:47:57 -0600 Message-ID: <20231013224818.3456409-6-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add query_module param to ddebug_apply_class_bitmap(). This allows its caller to update just one module, or all (as currently). We'll use this later to propagate drm.debug to each USEr as they're modprobed. No functional change. Signed-off-by: Jim Cromie --- after `modprobe i915`, heres the module dependencies, though not all on drm.debug. bash-5.2# lsmod Module Size Used by i915 3133440 0 drm_buddy 20480 1 i915 ttm 90112 1 i915 i2c_algo_bit 16384 1 i915 video 61440 1 i915 wmi 32768 1 video drm_display_helper 200704 1 i915 drm_kms_helper 208896 2 drm_display_helper,i915 drm 606208 5 drm_kms_helper,drm_display_helper,drm_buddy,i915,ttm cec 57344 2 drm_display_helper,i915 --- lib/dynamic_debug.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index a3be2e7c8c84..ba41fdeaaf98 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -601,7 +601,8 @@ static int ddebug_exec_queries(char *query, const char *modname) /* apply a new bitmap to the sys-knob's current bit-state */ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, - unsigned long *new_bits, unsigned long *old_bits) + unsigned long *new_bits, unsigned long *old_bits, + const char *query_modname) { #define QUERY_SIZE 128 char query[QUERY_SIZE]; @@ -609,7 +610,8 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, int matches = 0; int bi, ct; - v2pr_info("apply: 0x%lx to: 0x%lx\n", *new_bits, *old_bits); + v2pr_info("apply bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, *old_bits, + query_modname ?: ""); for (bi = 0; bi < map->length; bi++) { if (test_bit(bi, new_bits) == test_bit(bi, old_bits)) @@ -618,12 +620,15 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, snprintf(query, QUERY_SIZE, "class %s %c%s", map->class_names[bi], test_bit(bi, new_bits) ? '+' : '-', dcp->flags); - ct = ddebug_exec_queries(query, NULL); + ct = ddebug_exec_queries(query, query_modname); matches += ct; v2pr_info("bit_%d: %d matches on class: %s -> 0x%lx\n", bi, ct, map->class_names[bi], *new_bits); } + v2pr_info("applied bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, *old_bits, + query_modname ?: ""); + return matches; } @@ -679,7 +684,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa continue; } curr_bits ^= BIT(cls_id); - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, dcp->bits); + totct += ddebug_apply_class_bitmap(dcp, &curr_bits, dcp->bits, NULL); *dcp->bits = curr_bits; v2pr_info("%s: changed bit %d:%s\n", KP_NAME(kp), cls_id, map->class_names[cls_id]); @@ -689,7 +694,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa old_bits = CLASSMAP_BITMASK(*dcp->lvl); curr_bits = CLASSMAP_BITMASK(cls_id + (wanted ? 1 : 0 )); - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, &old_bits); + totct += ddebug_apply_class_bitmap(dcp, &curr_bits, &old_bits, NULL); *dcp->lvl = (cls_id + (wanted ? 1 : 0)); v2pr_info("%s: changed bit-%d: \"%s\" %lx->%lx\n", KP_NAME(kp), cls_id, map->class_names[cls_id], old_bits, curr_bits); @@ -752,7 +757,7 @@ int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) inrep &= CLASSMAP_BITMASK(map->length); } v2pr_info("bits:%lx > %s\n", inrep, KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &inrep, dcp->bits); + totct += ddebug_apply_class_bitmap(dcp, &inrep, dcp->bits, NULL); *dcp->bits = inrep; break; case DD_CLASS_TYPE_LEVEL_NUM: @@ -765,7 +770,7 @@ int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) old_bits = CLASSMAP_BITMASK(*dcp->lvl); new_bits = CLASSMAP_BITMASK(inrep); v2pr_info("lvl:%ld bits:0x%lx > %s\n", inrep, new_bits, KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &new_bits, &old_bits); + totct += ddebug_apply_class_bitmap(dcp, &new_bits, &old_bits, NULL); *dcp->lvl = inrep; break; default: From patchwork Fri Oct 13 22:47:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421819 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BAAD7CDB47E for ; Fri, 13 Oct 2023 22:49:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DC0A910E668; Fri, 13 Oct 2023 22:48:43 +0000 (UTC) Received: from mail-il1-x130.google.com (mail-il1-x130.google.com [IPv6:2607:f8b0:4864:20::130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8FFB110E654; Fri, 13 Oct 2023 22:48:37 +0000 (UTC) Received: by mail-il1-x130.google.com with SMTP id e9e14a558f8ab-3574f99d260so9970595ab.3; Fri, 13 Oct 2023 15:48:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237317; x=1697842117; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=X+YoaYP9Btr77N0brD8AfqI/lJY3W3ao1Z4fzgsncX4=; b=aa/ISgVdLkJcnEE6cmRcB2UwhCTWT62k4ShsY1R4klcZenFHPwGg8G0U4yGX14yKsC t5O4yNgla6xicveBirUHKRHc6/FPAjEqy7/TLSIiwvajy8aIYvJkzlaBDuT4148of1l0 nlNh+MC3JrwIiFZdpprQD/iw4mOb6sQ8WjOHLxxZnDJbS0r59DVZb35N1vjlpYPSfZKd yF96PPv3ZKfgLofmU+Xi3xeIR5NwScictz7UTo/QHqUxsg+6vqquGTVJQH+gcV8ZQ7ni GqsVc/rCG7g3lqicgPLkSY+R5m7xQH8MrzMvjanY7a4XN2aMKHuQ0y/lSlavkOLlu9c+ aDAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237317; x=1697842117; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=X+YoaYP9Btr77N0brD8AfqI/lJY3W3ao1Z4fzgsncX4=; b=ZWgINElcogzJKj0BE6IaEAK/jZYi3CWAMdaaFAXJjanmXwOYZ755oakqy6dSKsLQmd fgbRyVw4exqos8r7Vf7FRgJq0FfUCx9I4MgT2aZRGykKdqp93iDZ0f01J+X2e/DD1BHU nglNA77p1Fh12rZfMnV+ypBxVjR33L/nXvx+eR4VAsQWRrh5j0l7ZF0iNoWKKin0+o+1 dTzNE1tHF1DjbpmYYrfBBWVV8DnxaIedQ1uNCsuuWkfDHPLuv2bNrvDQ2yUWI/y6T3qN 4TnWjikwzbXklmR4dfbpn+bFkaXZCUJSrEMxItpt3W6s5y4z6ZrC9TdQKr0d07UgUnCQ 0b3A== X-Gm-Message-State: AOJu0Yxg+6DMMNo0RsI4fNCD+sG2NDsd9wvh8pP1sC3eKmKBcpo/3uN+ FuOdfaxBTMfJvBiEy0f4FjkUs4kn1PoNLg== X-Google-Smtp-Source: AGHT+IHwailVRlZkUbGYom5kFyqAItD1e1tOiOSBrxx42FM/r/kE7Kk109A0EUSZNIcZwaLqfWt5wA== X-Received: by 2002:a92:d482:0:b0:357:5751:7aa9 with SMTP id p2-20020a92d482000000b0035757517aa9mr6317829ilg.2.1697237316825; Fri, 13 Oct 2023 15:48:36 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:36 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 06/25] dyndbg: split param_set_dyndbg_classes to module/wrapper fns Date: Fri, 13 Oct 2023 16:47:58 -0600 Message-ID: <20231013224818.3456409-7-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" rename param_set_dyndbg_classes: add _module_ name & arg, old name is wrapper to new. New arg allows caller to specify that only one module is affected by a prdbgs update. Outer fn preserves kernel_param interface, passing NULL to inner fn. This selectivity will be used later to narrow the scope of changes made. no functional change. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 37 ++++++++++++++++++++++--------------- 1 file changed, 22 insertions(+), 15 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index ba41fdeaaf98..b67c9b137447 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -708,18 +708,9 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa return 0; } -/** - * param_set_dyndbg_classes - class FOO >control - * @instr: string echo>d to sysfs, input depends on map_type - * @kp: kp->arg has state: bits/lvl, map, map_type - * - * Enable/disable prdbgs by their class, as given in the arguments to - * DECLARE_DYNDBG_CLASSMAP. For LEVEL map-types, enforce relative - * levels by bitpos. - * - * Returns: 0 or <0 if error. - */ -int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) +static int param_set_dyndbg_module_classes(const char *instr, + const struct kernel_param *kp, + const char *modnm) { const struct ddebug_class_param *dcp = kp->arg; const struct ddebug_class_map *map = dcp->map; @@ -756,8 +747,8 @@ int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) KP_NAME(kp), inrep, CLASSMAP_BITMASK(map->length)); inrep &= CLASSMAP_BITMASK(map->length); } - v2pr_info("bits:%lx > %s\n", inrep, KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &inrep, dcp->bits, NULL); + v2pr_info("bits:0x%lx > %s.%s\n", inrep, modnm ?: "*", KP_NAME(kp)); + totct += ddebug_apply_class_bitmap(dcp, &inrep, dcp->bits, modnm); *dcp->bits = inrep; break; case DD_CLASS_TYPE_LEVEL_NUM: @@ -770,7 +761,7 @@ int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) old_bits = CLASSMAP_BITMASK(*dcp->lvl); new_bits = CLASSMAP_BITMASK(inrep); v2pr_info("lvl:%ld bits:0x%lx > %s\n", inrep, new_bits, KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &new_bits, &old_bits, NULL); + totct += ddebug_apply_class_bitmap(dcp, &new_bits, &old_bits, modnm); *dcp->lvl = inrep; break; default: @@ -779,6 +770,22 @@ int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) vpr_info("%s: total matches: %d\n", KP_NAME(kp), totct); return 0; } + +/** + * param_set_dyndbg_classes - class FOO >control + * @instr: string echo>d to sysfs, input depends on map_type + * @kp: kp->arg has state: bits/lvl, map, map_type + * + * Enable/disable prdbgs by their class, as given in the arguments to + * DECLARE_DYNDBG_CLASSMAP. For LEVEL map-types, enforce relative + * levels by bitpos. + * + * Returns: 0 or <0 if error. + */ +int param_set_dyndbg_classes(const char *instr, const struct kernel_param *kp) +{ + return param_set_dyndbg_module_classes(instr, kp, NULL); +} EXPORT_SYMBOL(param_set_dyndbg_classes); /** From patchwork Fri Oct 13 22:47:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421820 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9CA1BCDB484 for ; Fri, 13 Oct 2023 22:49:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BFD7210E667; Fri, 13 Oct 2023 22:48:43 +0000 (UTC) Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by gabe.freedesktop.org (Postfix) with ESMTPS id BA64910E658; Fri, 13 Oct 2023 22:48:38 +0000 (UTC) Received: by mail-il1-x129.google.com with SMTP id e9e14a558f8ab-352a22e1471so10472835ab.0; Fri, 13 Oct 2023 15:48:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237318; x=1697842118; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=fEjUcd2gIGh+rcuXSmEeq7H3LSdL8L2dg7mL1DHpCLA=; b=UycOKGnWi0VpsiMHth8hRixZPQAH6dbf4sFDp+nxuZNPL7KK0+Wpjgf2iE4YDCUmz7 rX+KNQthMhXsyudevoegAykYfi58QnL36kxl9kkbNku6ImzZltOqcbucFerUuP+s+Q3J SKtpAGmU7ZgEC7IGJ5KgAgcxy7btLR2NaQbYndCfBMNdAXkmxtA9d0mTB3XvFnSdrr97 YrVJDD42RPgRML+2GSBP931ojSvf3mu2sZlsOlbWH3p6+YZb+ERfaixrVH9S8jitiiv7 GyfZpQY7yzw0Y+kp5Hp2Kt0tQd3D590HRlfbW9vOz0wNF7OtW/qgNsFGVS9Z5Cf+VFwI oE1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237318; x=1697842118; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fEjUcd2gIGh+rcuXSmEeq7H3LSdL8L2dg7mL1DHpCLA=; b=VcO/dd5gGduq9vfBLDa6U4kC/m9p9+rdgvgVt3pjOwFtMMlSsKkPgsX3zMO+hVB8tK PczJophkdyCAy/9iGW5IazZzOyL9yrwbRD6jWMtqqhkTANX40U90WAeTZhwOOh2j2mAv Yhqxi+qGCPMn1DbB9lnfAOnvStaeIo6KjfNuA/Pl6ZoVJN6Oyb7nmoeGDTOkUWp7yObX EVJWy7oaHV0lxFXnIBoQmEFrbISYc8EB56JltyGrmxLoUpLHvvcjx7LYbQdOxR0TkBx2 h3VO/L06EH4SKGYz+bx1a60cmxXPe8j3y9TvpKYqtCNa2H9bCs4/lyWTXPd4+ed3Gbna Uh+w== X-Gm-Message-State: AOJu0YyMolLeMjf3FaiiNDYyrvFF+Hnu/pRGeUcyCwKUDqRhX60Guexn J8KvgFH7K3owPNifVl+ut/w= X-Google-Smtp-Source: AGHT+IHo7yrBXRamtlyqRFU7QLO+/vsLx8/xPVHCeJyGOb8qAVk77cmrpeWyWFO6E5JV0+KuMjiYZA== X-Received: by 2002:a05:6e02:20e6:b0:350:b7a9:514b with SMTP id q6-20020a056e0220e600b00350b7a9514bmr35371309ilv.8.1697237317961; Fri, 13 Oct 2023 15:48:37 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:37 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 07/25] dyndbg: drop NUM_TYPE_ARRAY Date: Fri, 13 Oct 2023 16:47:59 -0600 Message-ID: <20231013224818.3456409-8-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" ARRAY_SIZE works here, since array decl is complete. no functional change Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index b53217e4b711..8116d0a0d33a 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -106,11 +106,9 @@ struct ddebug_class_map { .mod_name = KBUILD_MODNAME, \ .base = _base, \ .map_type = _maptype, \ - .length = NUM_TYPE_ARGS(char*, __VA_ARGS__), \ + .length = ARRAY_SIZE(_var##_classnames), \ .class_names = _var##_classnames, \ } -#define NUM_TYPE_ARGS(eltype, ...) \ - (sizeof((eltype[]){__VA_ARGS__}) / sizeof(eltype)) /* encapsulate linker provided built-in (or module) dyndbg data */ struct _ddebug_info { From patchwork Fri Oct 13 22:48:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421823 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 76F98CDB47E for ; Fri, 13 Oct 2023 22:49:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5B63310E678; Fri, 13 Oct 2023 22:48:47 +0000 (UTC) Received: from mail-il1-x133.google.com (mail-il1-x133.google.com [IPv6:2607:f8b0:4864:20::133]) by gabe.freedesktop.org (Postfix) with ESMTPS id F390410E07D; Fri, 13 Oct 2023 22:48:39 +0000 (UTC) Received: by mail-il1-x133.google.com with SMTP id e9e14a558f8ab-3513c435465so6492395ab.0; Fri, 13 Oct 2023 15:48:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237319; x=1697842119; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=m2Hn5pT28/jZmYZLDxW0t8SHXvPdNDH+Olrk3yFtzgY=; b=IsA8qL43V2BfsXJ1W8D8iHJrqcn0/nqhx3H5cxsvlokFFqNeWw6CCmlUomzZUO5hcT SjQA31fORfwp65RLpC9X384Ox7261aF9mxaDMmAqtuIg19rUdWMTaipaWxF+luZ67mOJ hAv9oa3mu3EAqXTp4PkTztiRSqWTUofHveFHEa6JISXf8UrDzxgtoVUDJCWhOqoiEr66 xs4iApjb0OwlBrWr59rV17091p5tYy4Lse+7lVQhagCHrdaCPuIqdDspAqsPOavH2UIc id8ktIhcbyBZj8JJHGqUf0CqitTkYSNFxexmUCjeyMK9DW/YaiE44W3oNEVlAaWvzzcx 4a8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237319; x=1697842119; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=m2Hn5pT28/jZmYZLDxW0t8SHXvPdNDH+Olrk3yFtzgY=; b=ILljaPmAIS7WMYz8nj1p57ygn1K9qBwnn5jBKCsir210gSNukF/KipegZnstno7DN5 dzxRirIwzPrwrsxaigBO6DyfFZKCNaQ6W6dfVdZoXW4lZKiv0BHXQyO0N85MR0soibFC iw+nXaNBAdaVQX0sjly9SKwLZ8lqjM72shQjnS++WTAKswXJf+yneH5XxEnjVL1cxWWc wGCcah8EMDaBbF3xvf4ykm2OX4szejkzLkZqg7k/yXryridRtWBto37p7PPVna1j6Hzv o855HT+NWQnub3qDnZ85X188opFI0r734nEdThFLcDLACF0dWlEiHVtYR3Dq9a1p4T3s tH7w== X-Gm-Message-State: AOJu0Ywl5TJZvFub7WKhB4l0NyGlZv+L8y0FKsmeJhBTeuevijrpiO35 0wmZi5A7PYPhi2ZYmPgZcvI= X-Google-Smtp-Source: AGHT+IGTDxH+GWA5Wnxbyfwvm5Vk8re9EDfOku5kh8SWG64lPiBD5YT2D7o937VnGfqs6q+bNeKl9Q== X-Received: by 2002:a05:6e02:349a:b0:351:3c98:ca30 with SMTP id bp26-20020a056e02349a00b003513c98ca30mr1025519ilb.8.1697237319179; Fri, 13 Oct 2023 15:48:39 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:38 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 08/25] dyndbg: reduce verbose/debug clutter Date: Fri, 13 Oct 2023 16:48:00 -0600 Message-ID: <20231013224818.3456409-9-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" currently, for verbose=3, these are logged (blank lines for clarity): dyndbg: query 0: "class DRM_UT_CORE +p" mod:* dyndbg: split into words: "class" "DRM_UT_CORE" "+p" dyndbg: op='+' dyndbg: flags=0x1 dyndbg: *flagsp=0x1 *maskp=0xffffffff dyndbg: parsed: func="" file="" module="" format="" lineno=0-0 class=... dyndbg: no matches for query dyndbg: no-match: func="" file="" module="" format="" lineno=0-0 class=... dyndbg: processed 1 queries, with 0 matches, 0 errs That is excessive, so this patch: - shrinks 3 lines of 2nd stanza to single line - drops 1st 2 lines of 3rd stanza 3rd is like 1st, with result, not procedure. 2nd is just status, retold in 4th, with more info. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index b67c9b137447..b0e11f6bfaa2 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -266,9 +266,6 @@ static int ddebug_change(const struct ddebug_query *query, } mutex_unlock(&ddebug_lock); - if (!nfound && verbose) - pr_info("no matches for query\n"); - return nfound; } @@ -497,7 +494,6 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) pr_err("bad flag-op %c, at start of %s\n", *str, str); return -EINVAL; } - v3pr_info("op='%c'\n", op); for (; *str ; ++str) { for (i = ARRAY_SIZE(opt_array) - 1; i >= 0; i--) { @@ -511,7 +507,6 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) return -EINVAL; } } - v3pr_info("flags=0x%x\n", modifiers->flags); /* calculate final flags, mask based upon op */ switch (op) { @@ -527,7 +522,7 @@ static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) modifiers->flags = 0; break; } - v3pr_info("*flagsp=0x%x *maskp=0x%x\n", modifiers->flags, modifiers->mask); + v3pr_info("op='%c' flags=0x%x maskp=0x%x\n", op, modifiers->flags, modifiers->mask); return 0; } @@ -537,7 +532,7 @@ static int ddebug_exec_query(char *query_string, const char *modname) struct flag_settings modifiers = {}; struct ddebug_query query = {}; #define MAXWORDS 9 - int nwords, nfound; + int nwords; char *words[MAXWORDS]; nwords = ddebug_tokenize(query_string, words, MAXWORDS); @@ -555,10 +550,7 @@ static int ddebug_exec_query(char *query_string, const char *modname) return -EINVAL; } /* actually go and implement the change */ - nfound = ddebug_change(&query, &modifiers); - vpr_info_dq(&query, nfound ? "applied" : "no-match"); - - return nfound; + return ddebug_change(&query, &modifiers); } /* handle multiple queries in query string, continue on error, return From patchwork Fri Oct 13 22:48:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421822 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 95DF5CDB483 for ; Fri, 13 Oct 2023 22:49:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DA82610E673; Fri, 13 Oct 2023 22:48:46 +0000 (UTC) Received: from mail-il1-x136.google.com (mail-il1-x136.google.com [IPv6:2607:f8b0:4864:20::136]) by gabe.freedesktop.org (Postfix) with ESMTPS id EDCC410E65B; Fri, 13 Oct 2023 22:48:40 +0000 (UTC) Received: by mail-il1-x136.google.com with SMTP id e9e14a558f8ab-3573fa82923so10019065ab.1; Fri, 13 Oct 2023 15:48:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237320; x=1697842120; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=/hQ8DAFT4FsmbzhSx1IDeWkXEPOHVXkBPwwDIEI4NyY=; b=JnTVzfad9v8r5BTxQhwJq1fR8kd5s6xznb+1ObC6fGpdciLKo250iNDrIACftiZOxm 2OifeE41q1UX0M2EpHQVhwFZVXqtxgQgNlPfeRK4IJuc7IbCJqVXc8hEVz7UX0oeYIxd WkW+OoTsZD4M6BV7FrYfPswr7t/vmiBVaeDDA7wjGNZPMhHT2BhiaY6uwy0V1s9oF3M3 84o28VLfQvUjoQCulCaz9ZkwlK0IG9PrmmykUe6lPgIWgDvhHMrYR/ytNJl8fKD9RNu7 DGC+ShOvjZV20HFYUbXnZJEPC8BTgj7OyVYykxwJGLH3COjx1eWxny1OKC4dNqojFQW1 /1VQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237320; x=1697842120; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/hQ8DAFT4FsmbzhSx1IDeWkXEPOHVXkBPwwDIEI4NyY=; b=SXpDkP6FdxS2a1V8wS1u2uasFh2ZMbBCMtGjQZrMu6bNl2cYO7XCY+0Npu1+7uTpFP PFetj7k3TOZZ4hfh+TuD9pCbaekFtCaH7GvLN1uFrHn6RUlPIe9jEIbd2GIAWk4srYYY nx6QDGaZwcz/M1/CcvIsWRNuYJQ/XRPoUITpfrPbaGsG2ou4qfaeYp5kC6ircJUquYFE qTN9L31s42cOBY9txtLdYB1Whma6D0G0oxa6QwQp67+2VYYpVaemkI5X0ELaHWdaM2N9 JGKw6SmDORul4bli5bj6gW2q4+u6gB+uKv7vTQgMsfKoxgmw3oyWfZTq5jb5ZTPg5OKi 01rQ== X-Gm-Message-State: AOJu0YxrQIRbeSFfXj797PgsP91GkibSeq4LQ1IWJyK/pdHXj9/pGZPG EAYzfz1n2N08k434GsVe4G0= X-Google-Smtp-Source: AGHT+IFWzfLu4PGmus7ljis6BNefoHOi0vudeTfx0BB9PvgaKq8Xz+gO9Q1GlF5rr7nXwvkgWTPtCg== X-Received: by 2002:a92:cdac:0:b0:357:4a69:60d8 with SMTP id g12-20020a92cdac000000b003574a6960d8mr10469811ild.4.1697237320251; Fri, 13 Oct 2023 15:48:40 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:39 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 09/25] dyndbg: silence debugs with no-change updates Date: Fri, 13 Oct 2023 16:48:01 -0600 Message-ID: <20231013224818.3456409-10-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" check for actual changes before announcing them, declutter logs. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index b0e11f6bfaa2..b07aab422604 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -591,7 +591,7 @@ static int ddebug_exec_queries(char *query, const char *modname) return nfound; } -/* apply a new bitmap to the sys-knob's current bit-state */ +/* apply a new class-param setting */ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, unsigned long *new_bits, unsigned long *old_bits, const char *query_modname) @@ -602,8 +602,9 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, int matches = 0; int bi, ct; - v2pr_info("apply bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, *old_bits, - query_modname ?: ""); + if (*new_bits != *old_bits) + v2pr_info("apply bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, + *old_bits, query_modname ?: "'*'"); for (bi = 0; bi < map->length; bi++) { if (test_bit(bi, new_bits) == test_bit(bi, old_bits)) @@ -618,8 +619,9 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, v2pr_info("bit_%d: %d matches on class: %s -> 0x%lx\n", bi, ct, map->class_names[bi], *new_bits); } - v2pr_info("applied bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, *old_bits, - query_modname ?: ""); + if (*new_bits != *old_bits) + v2pr_info("applied bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, + *old_bits, query_modname ?: "'*'"); return matches; } From patchwork Fri Oct 13 22:48:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421821 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 34F0ACDB484 for ; Fri, 13 Oct 2023 22:49:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 993B510E66A; Fri, 13 Oct 2023 22:48:44 +0000 (UTC) Received: from mail-il1-x135.google.com (mail-il1-x135.google.com [IPv6:2607:f8b0:4864:20::135]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1363610E656; Fri, 13 Oct 2023 22:48:42 +0000 (UTC) Received: by mail-il1-x135.google.com with SMTP id e9e14a558f8ab-351208d0d6cso9740445ab.1; Fri, 13 Oct 2023 15:48:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237321; x=1697842121; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=O4Nv87Lg2zXFTsrsMPJe4o1KQfKM5CR/Su7zfjGsbi8=; b=QmHE+5Q4w/GYCZ2YVYMgeRtiITq+1fE5RAgjAyzL5YavccUiLkr1XxW42bkMeEl0lG EtQH3QQ4ptDmyPanjNy8rPcE99TMeSZ7onvvHKVNTQOqagMKln1QNjRrVPUjwxKXF6cm LsmygJBk+kZ6hNHlXaT9nH3CkbN0TWp752xGm/ysAAcMmigh9VhwecAxxCuLUSrmKy3g 9ubqF5KAnm451lWubyc7+xHJF6GQmroRpuMyFXxxZLk6tTBNUSxLc3z1LkFJvoHX7+jA gyi97b14DlOjS+lf4tzo26hBL5MSXHgGbVP2vaKR7eQOvoJYe6daX42A519CiPp3zSvr ac+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237321; x=1697842121; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=O4Nv87Lg2zXFTsrsMPJe4o1KQfKM5CR/Su7zfjGsbi8=; b=V046RG1MAhtWY8NIJEQ8nOO87a+bw8xQCRxSbhFV5O96U4EcWBQ06ySX3rwj0KemfJ aayJCVgjdjFYDwgBh2lXsYrMA2gBGLuphiF903ia9XOZr8X5b+djOe+eSr94raidEPXU SqJ4fVOWYESafQhDkDEgL4bsSWa/AW9qEheBOHL5CHvkpA0JDr9O2cKsktw6HvxPLJKs AQesaXBE1v6ikzOqwnUpZ8G5Hsd4w3CBYmoEpjXIaq7L/ZPVm4upw0Byhg97b0aD5ED6 HK6SNL0GU/Jl7/hDHPEUOM8q6IOEDY1sd7y+4d39LQv0OlHakp/zriFafPv9Wi2FnEDX K/Aw== X-Gm-Message-State: AOJu0YykV1cGkdiShWW2+ctUbzJM5A7/GYO47zeAmyukH3B73h6arOpo eKlmr5WAvyZcj0A7Y3ytxOU= X-Google-Smtp-Source: AGHT+IFi2WfSSyAbjqCpWaNlxupVxRqtj0XluiJVnf5vbLg35Uz1MLSFKUJlsjNrq6Dz1o+F9+CISA== X-Received: by 2002:a05:6e02:1e02:b0:350:f0bb:6a42 with SMTP id g2-20020a056e021e0200b00350f0bb6a42mr39141991ila.29.1697237321292; Fri, 13 Oct 2023 15:48:41 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:40 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 10/25] dyndbg: tighten ddebug_class_name() 1st arg type Date: Fri, 13 Oct 2023 16:48:02 -0600 Message-ID: <20231013224818.3456409-11-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Change function's 1st arg-type, and deref in the caller. The fn doesn't need any other fields in the struct. no functional change. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index b07aab422604..8158943b350d 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1117,12 +1117,12 @@ static void *ddebug_proc_next(struct seq_file *m, void *p, loff_t *pos) #define class_in_range(class_id, map) \ (class_id >= map->base && class_id < map->base + map->length) -static const char *ddebug_class_name(struct ddebug_iter *iter, struct _ddebug *dp) +static const char *ddebug_class_name(struct ddebug_table *dt, struct _ddebug *dp) { - struct ddebug_class_map *map = iter->table->classes; - int i, nc = iter->table->num_classes; + struct ddebug_class_map *map = dt->classes; + int i; - for (i = 0; i < nc; i++, map++) + for (i = 0; i < dt->num_classes; i++, map++) if (class_in_range(dp->class_id, map)) return map->class_names[dp->class_id - map->base]; @@ -1156,7 +1156,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p) seq_puts(m, "\""); if (dp->class_id != _DPRINTK_CLASS_DFLT) { - class = ddebug_class_name(iter, dp); + class = ddebug_class_name(iter->table, dp); if (class) seq_printf(m, " class:%s", class); else From patchwork Fri Oct 13 22:48:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421826 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A1B2FCDB483 for ; Fri, 13 Oct 2023 22:49:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E287E10E683; Fri, 13 Oct 2023 22:48:50 +0000 (UTC) Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7AAB110E665; Fri, 13 Oct 2023 22:48:43 +0000 (UTC) Received: by mail-il1-x129.google.com with SMTP id e9e14a558f8ab-35749fd39b6so10016175ab.1; Fri, 13 Oct 2023 15:48:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237323; x=1697842123; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jF8ZuY1M1o6SHHQ3gYRaaYnGIssRMD3RHl4cqnyzMiQ=; b=QW+lnztGCcCPsAdDHhPRhH+RrIYIof1Mx/y5vwSDpZ5jYkXT3lnsx6wdMvN1yQNDGC r+Iw2oQbm6a5Jz7LFe1DC+i6QQ4u9JWzK0EotXWlF80NUkLbmXNn0dWMY+BBbD2fej3K nD7jd3htOAbMuAg8xSCIdRhonsIEqU6jGYkUvlzW4pmwi/0SYHggWailuHs3iOPSve+R 09Q+AeWM8eSN4LQpzRG2CCafpqSJeLgcS5ydOyrUnTol3jw0FxiHTINUFwLz5ZEVDyi2 7dbzm7ZHSpEcRiP1txJOeC9s30t1PISJTfiqXtLUIBPEFnWUcZZtdXgzS03qI2Zln0Hh AKBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237323; x=1697842123; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jF8ZuY1M1o6SHHQ3gYRaaYnGIssRMD3RHl4cqnyzMiQ=; b=m/FvUW460Nvwc29k/k4QiMDU5t/ZA+UjNjofV92Z30n0gCxTo1oxSb1LvWKTCqw01s G14IFaKdwY0anUTq8iFwxfGKp8xlkinXJN75deWj4Two7cvgTFwkUQHgjkLzpvXYK6fr R3OGRjAdeU++c8xvLWulzoqINTlTJIbKiGnPw30QmckJ09x57v/0hD6j3j02ccJLYSD1 dDeThkT6MAFu8Z2Dv6KBlrDB+3iD7hE5R+wHcHTazjzkS/nsHUWMOEefWai5zh8DJG5K lvBgCkA98//hEo01aUPVQX52LMuDqTkenRRYSSfMC8grxYNRwAIA6ku7J/2+mxJpddFI cA8w== X-Gm-Message-State: AOJu0Yx8Fhz1xoDwYcK3Jfm9xkAc55rHKHFXCI6o6knXZfdPsc+yZhbx zh/7gG+m6BBoXNccbr9cx/s= X-Google-Smtp-Source: AGHT+IEJ3swPJWrAzR8SausB1qjZ51rhfqaHRKWRPkNbbAExrLI7Y5FG5O26I5qHzTpjwQXlM97rtA== X-Received: by 2002:a05:6e02:1a0e:b0:352:6f88:9818 with SMTP id s14-20020a056e021a0e00b003526f889818mr32961051ild.11.1697237322782; Fri, 13 Oct 2023 15:48:42 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:42 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 11/25] dyndbg: tighten fn-sig of ddebug_apply_class_bitmap Date: Fri, 13 Oct 2023 16:48:03 -0600 Message-ID: <20231013224818.3456409-12-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" old_bits arg is currently a pointer to the input bits, but this could allow inadvertent changes to the input by the fn. Disallow this. And constify new_bits while here. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 8158943b350d..8beb98a831f5 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -593,7 +593,8 @@ static int ddebug_exec_queries(char *query, const char *modname) /* apply a new class-param setting */ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, - unsigned long *new_bits, unsigned long *old_bits, + const unsigned long *new_bits, + const unsigned long old_bits, const char *query_modname) { #define QUERY_SIZE 128 @@ -602,12 +603,12 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, int matches = 0; int bi, ct; - if (*new_bits != *old_bits) + if (*new_bits != old_bits) v2pr_info("apply bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, - *old_bits, query_modname ?: "'*'"); + old_bits, query_modname ?: "'*'"); for (bi = 0; bi < map->length; bi++) { - if (test_bit(bi, new_bits) == test_bit(bi, old_bits)) + if (test_bit(bi, new_bits) == test_bit(bi, &old_bits)) continue; snprintf(query, QUERY_SIZE, "class %s %c%s", map->class_names[bi], @@ -619,9 +620,9 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, v2pr_info("bit_%d: %d matches on class: %s -> 0x%lx\n", bi, ct, map->class_names[bi], *new_bits); } - if (*new_bits != *old_bits) + if (*new_bits != old_bits) v2pr_info("applied bitmap: 0x%lx to: 0x%lx for %s\n", *new_bits, - *old_bits, query_modname ?: "'*'"); + old_bits, query_modname ?: "'*'"); return matches; } @@ -678,7 +679,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa continue; } curr_bits ^= BIT(cls_id); - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, dcp->bits, NULL); + totct += ddebug_apply_class_bitmap(dcp, &curr_bits, *dcp->bits, NULL); *dcp->bits = curr_bits; v2pr_info("%s: changed bit %d:%s\n", KP_NAME(kp), cls_id, map->class_names[cls_id]); @@ -688,7 +689,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa old_bits = CLASSMAP_BITMASK(*dcp->lvl); curr_bits = CLASSMAP_BITMASK(cls_id + (wanted ? 1 : 0 )); - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, &old_bits, NULL); + totct += ddebug_apply_class_bitmap(dcp, &curr_bits, old_bits, NULL); *dcp->lvl = (cls_id + (wanted ? 1 : 0)); v2pr_info("%s: changed bit-%d: \"%s\" %lx->%lx\n", KP_NAME(kp), cls_id, map->class_names[cls_id], old_bits, curr_bits); @@ -742,7 +743,7 @@ static int param_set_dyndbg_module_classes(const char *instr, inrep &= CLASSMAP_BITMASK(map->length); } v2pr_info("bits:0x%lx > %s.%s\n", inrep, modnm ?: "*", KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &inrep, dcp->bits, modnm); + totct += ddebug_apply_class_bitmap(dcp, &inrep, *dcp->bits, modnm); *dcp->bits = inrep; break; case DD_CLASS_TYPE_LEVEL_NUM: @@ -755,7 +756,7 @@ static int param_set_dyndbg_module_classes(const char *instr, old_bits = CLASSMAP_BITMASK(*dcp->lvl); new_bits = CLASSMAP_BITMASK(inrep); v2pr_info("lvl:%ld bits:0x%lx > %s\n", inrep, new_bits, KP_NAME(kp)); - totct += ddebug_apply_class_bitmap(dcp, &new_bits, &old_bits, modnm); + totct += ddebug_apply_class_bitmap(dcp, &new_bits, old_bits, modnm); *dcp->lvl = inrep; break; default: From patchwork Fri Oct 13 22:48:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421824 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C7197CDB484 for ; Fri, 13 Oct 2023 22:49:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4EEDE10E677; Fri, 13 Oct 2023 22:48:47 +0000 (UTC) Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by gabe.freedesktop.org (Postfix) with ESMTPS id B996910E66B; Fri, 13 Oct 2023 22:48:44 +0000 (UTC) Received: by mail-il1-x132.google.com with SMTP id e9e14a558f8ab-35749078a59so9751985ab.3; Fri, 13 Oct 2023 15:48:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237324; x=1697842124; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=mLvXeLnsRUQ3/TUrQnBU04ibB7JIWTVa6JOjlgQ9hVM=; b=UFYqsohfDpscxqbUXsUmzcp0E/qcVtNj4SvPm0/LGsMRo/1J3PkQuDbcaITmoHGa1y Df6Bz9g3D3m1OnIu9OMnOYUQQEeCYTZbIKgQYaEicLKUcon4Ury3jl1IbQ4wqi86F8nI 74k3PsZDVfE/pTvsl1J+KX3tKISA6/sRIpXhUJYebiThaOSnA1O8i3Rj3LMg68F4OaLR U1n5s262uOzorN+mEWTQ5XAKLwep9q2zBdm5n0xvWikjSaDOfZfshSnFn7P/BzQYRvbn 5w+Ls8+DRoID1fq0UU5FnRZd6BreozaLCBBOMbAwaH0a332ATsAp+2lQ6YVhat3vNrOV w0uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237324; x=1697842124; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mLvXeLnsRUQ3/TUrQnBU04ibB7JIWTVa6JOjlgQ9hVM=; b=t1tOJzpFfbJQx1ciFGqWtgDoMM9VOuBBedWh3Or3iUerauUNVxOz8DaGe5eSX2F60e CRX5pnqnvWJmsKiNwLbC3fbJzvT6K4psmO0WMBNdJ50Y1yBlp4egVg8rlcj4eW2YUqPr E5hJ727WtHqj4JF2FAynLmEY127o/8z643iPD2AI21s6rbA3vVUxoGJedEsyFDeybIS+ rjOIcZRUQTyeoDisGZ2zuK6ebC8qcLKtn995yNZBIy6Kpghmbc0PzFsosFhkCYRA7jb3 5XWMWEB8hSpOQ5eYzdYVhGoxDjqeG249xBjZDZjxV+mOq1Wv5sbz04DsK2tapfPfRpZX /v8g== X-Gm-Message-State: AOJu0Yzk6YH66w2MSBa1Hv12KoJFPUKRzfGeHWLX1onic97kZ7LlU4vN RYvX/hoNskSaHE6hT4p6YVs= X-Google-Smtp-Source: AGHT+IHQw2wXhC/2oHYIYAGyvyYiqI1YXiorq4KT58Qv5KODmOPOVfx0/unPtKoAepPcMV4mVMSdQQ== X-Received: by 2002:a92:c56b:0:b0:34f:f5a4:3e68 with SMTP id b11-20020a92c56b000000b0034ff5a43e68mr37534070ilj.30.1697237323880; Fri, 13 Oct 2023 15:48:43 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:43 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 12/25] dyndbg: reduce verbose=3 messages in ddebug_add_module Date: Fri, 13 Oct 2023 16:48:04 -0600 Message-ID: <20231013224818.3456409-13-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The fn currently says "add-module", then "skipping" if the module has no prdbgs. Just check 1st and return quietly. no functional change Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 8beb98a831f5..45870a699507 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1242,11 +1242,10 @@ static int ddebug_add_module(struct _ddebug_info *di, const char *modname) { struct ddebug_table *dt; - v3pr_info("add-module: %s.%d sites\n", modname, di->num_descs); - if (!di->num_descs) { - v3pr_info(" skip %s\n", modname); + if (!di->num_descs) return 0; - } + + v3pr_info("add-module: %s %d sites\n", modname, di->num_descs); dt = kzalloc(sizeof(*dt), GFP_KERNEL); if (dt == NULL) { From patchwork Fri Oct 13 22:48:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421825 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8F5FCDB483 for ; Fri, 13 Oct 2023 22:49:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4F5A310E664; Fri, 13 Oct 2023 22:48:49 +0000 (UTC) Received: from mail-il1-x12f.google.com (mail-il1-x12f.google.com [IPv6:2607:f8b0:4864:20::12f]) by gabe.freedesktop.org (Postfix) with ESMTPS id EAFB410E66C; Fri, 13 Oct 2023 22:48:45 +0000 (UTC) Received: by mail-il1-x12f.google.com with SMTP id e9e14a558f8ab-3514bf96fd2so9836495ab.0; Fri, 13 Oct 2023 15:48:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237325; x=1697842125; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+wAzNX+7w+sJ5TtvQhRQmDSm4kIZa4oQoQoPV+qFJVk=; b=QpzPSQ7awd72UNxqn3xoG7kHG4uPi4ic9LmZJBis63B27qIyolWnh1ZB93UNJw+zof 30M+r0psrzoGH85w4J1op6LyU1eb33UWSgwzI2oB9lv1HquvaAMxM3hbfMwT1l+NJpV1 /FPrQv7jgscB8+w8dM1qRGCAx0Opw3yVdA5XWEHinOMq0M5AWEgYiPdqLKMOijp8O3B3 GSjdqGJ3gtJbLOcvf0zza7iFqf+b4gIZRD5I0DcOj5qWX1V+HI77/LY/RVELCVB/fg19 JqQvDRuPYRiwqEPUagXaQyDA34FjSZ9twCfTiRU9oTSm7RrG3+pg+YjE/UWfakbcboyG FWVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237325; x=1697842125; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+wAzNX+7w+sJ5TtvQhRQmDSm4kIZa4oQoQoPV+qFJVk=; b=Wf5XyEcHKBAVr6xDu3qgxD3DcySOvzlKE5sguxM7nM7rNf/hTefGx0NQTPgIYBhCES r4d3XKDlXQR2/HOjb/BV1fTgIBVWQc7Xzi8GrLzGLFAPVnoWpcwQZbWJMVGc1K9Ypbav Pet6F6+SHsh5Us9ymfg2hLZIZ0JgKtuXmVybgQeABUlsBbcuI3BeCHP4xcEfdgxYkUO2 x0rTFKDQq5Mx4NmuCNZ9XU+zxQmif6XwOHNt5RdZM2PeuVA8sg+GQ8Kh+Oual4qTH/kD gUCb6OU0z6bHe7RFN5F3vhNlqf7E/utm1AVwaOkgmqDFYLFsxUnc994bAxEqW3eFe/H4 feuA== X-Gm-Message-State: AOJu0Ywx2UEwApzWQYFdAYEuvxZ32nQMqvUPwPePpHd1CDvAL5V+50Yx ozlue5k/11U17+ZI1DGdNmw= X-Google-Smtp-Source: AGHT+IH5CWZDYBGFOR0RCEdCYFz3/bYbZONuNsRfPEUzYHHjevpEbmEjOO34iA8jcgYwrKJnmRoFxg== X-Received: by 2002:a05:6e02:219a:b0:351:111d:9cfc with SMTP id j26-20020a056e02219a00b00351111d9cfcmr39311248ila.21.1697237325162; Fri, 13 Oct 2023 15:48:45 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:44 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 13/25] dyndbg-API: remove DD_CLASS_TYPE_(DISJOINT|LEVEL)_NAMES and code Date: Fri, 13 Oct 2023 16:48:05 -0600 Message-ID: <20231013224818.3456409-14-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Remove the NAMED class types; these 2 classmap types accept class names at the PARAM interface, for example: echo +DRM_UT_CORE,-DRM_UT_KMS > /sys/module/drm/parameters/debug_names The code works, but its only used by test-dynamic-debug, and wasn't asked for by anyone else, so simplify things for now. Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 19 ++----- lib/dynamic_debug.c | 103 +++------------------------------- lib/test_dynamic_debug.c | 12 ---- 3 files changed, 12 insertions(+), 122 deletions(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 8116d0a0d33a..8eaf8eabdc8d 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -61,24 +61,13 @@ struct _ddebug { enum class_map_type { DD_CLASS_TYPE_DISJOINT_BITS, /** - * DD_CLASS_TYPE_DISJOINT_BITS: classes are independent, one per bit. - * expecting hex input. Built for drm.debug, basis for other types. + * DD_CLASS_TYPE_DISJOINT_BITS: classes are independent, mapped to bits[0..N]. + * Expects hex input. Built for drm.debug, basis for other types. */ DD_CLASS_TYPE_LEVEL_NUM, /** - * DD_CLASS_TYPE_LEVEL_NUM: input is numeric level, 0-N. - * N turns on just bits N-1 .. 0, so N=0 turns all bits off. - */ - DD_CLASS_TYPE_DISJOINT_NAMES, - /** - * DD_CLASS_TYPE_DISJOINT_NAMES: input is a CSV of [+-]CLASS_NAMES, - * classes are independent, like _DISJOINT_BITS. - */ - DD_CLASS_TYPE_LEVEL_NAMES, - /** - * DD_CLASS_TYPE_LEVEL_NAMES: input is a CSV of [+-]CLASS_NAMES, - * intended for names like: INFO,DEBUG,TRACE, with a module prefix - * avoid EMERG,ALERT,CRIT,ERR,WARNING: they're not debug + * DD_CLASS_TYPE_LEVEL_NUM: input is numeric level, 0..N. + * Input N turns on bits 0..N-1 */ }; diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 45870a699507..91c8b67fd8f8 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -632,77 +632,6 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, #define CLASSMAP_BITMASK(width) ((1UL << (width)) - 1) -/* accept comma-separated-list of [+-] classnames */ -static int param_set_dyndbg_classnames(const char *instr, const struct kernel_param *kp) -{ - const struct ddebug_class_param *dcp = kp->arg; - const struct ddebug_class_map *map = dcp->map; - unsigned long curr_bits, old_bits; - char *cl_str, *p, *tmp; - int cls_id, totct = 0; - bool wanted; - - cl_str = tmp = kstrdup(instr, GFP_KERNEL); - p = strchr(cl_str, '\n'); - if (p) - *p = '\0'; - - /* start with previously set state-bits, then modify */ - curr_bits = old_bits = *dcp->bits; - vpr_info("\"%s\" > %s:0x%lx\n", cl_str, KP_NAME(kp), curr_bits); - - for (; cl_str; cl_str = p) { - p = strchr(cl_str, ','); - if (p) - *p++ = '\0'; - - if (*cl_str == '-') { - wanted = false; - cl_str++; - } else { - wanted = true; - if (*cl_str == '+') - cl_str++; - } - cls_id = match_string(map->class_names, map->length, cl_str); - if (cls_id < 0) { - pr_err("%s unknown to %s\n", cl_str, KP_NAME(kp)); - continue; - } - - /* have one or more valid class_ids of one *_NAMES type */ - switch (map->map_type) { - case DD_CLASS_TYPE_DISJOINT_NAMES: - /* the +/- pertains to a single bit */ - if (test_bit(cls_id, &curr_bits) == wanted) { - v3pr_info("no change on %s\n", cl_str); - continue; - } - curr_bits ^= BIT(cls_id); - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, *dcp->bits, NULL); - *dcp->bits = curr_bits; - v2pr_info("%s: changed bit %d:%s\n", KP_NAME(kp), cls_id, - map->class_names[cls_id]); - break; - case DD_CLASS_TYPE_LEVEL_NAMES: - /* cls_id = N in 0..max. wanted +/- determines N or N-1 */ - old_bits = CLASSMAP_BITMASK(*dcp->lvl); - curr_bits = CLASSMAP_BITMASK(cls_id + (wanted ? 1 : 0 )); - - totct += ddebug_apply_class_bitmap(dcp, &curr_bits, old_bits, NULL); - *dcp->lvl = (cls_id + (wanted ? 1 : 0)); - v2pr_info("%s: changed bit-%d: \"%s\" %lx->%lx\n", KP_NAME(kp), cls_id, - map->class_names[cls_id], old_bits, curr_bits); - break; - default: - pr_err("illegal map-type value %d\n", map->map_type); - } - } - kfree(tmp); - vpr_info("total matches: %d\n", totct); - return 0; -} - static int param_set_dyndbg_module_classes(const char *instr, const struct kernel_param *kp, const char *modnm) @@ -711,29 +640,17 @@ static int param_set_dyndbg_module_classes(const char *instr, const struct ddebug_class_map *map = dcp->map; unsigned long inrep, new_bits, old_bits; int rc, totct = 0; - - switch (map->map_type) { - - case DD_CLASS_TYPE_DISJOINT_NAMES: - case DD_CLASS_TYPE_LEVEL_NAMES: - /* handle [+-]classnames list separately, we are done here */ - return param_set_dyndbg_classnames(instr, kp); - - case DD_CLASS_TYPE_DISJOINT_BITS: - case DD_CLASS_TYPE_LEVEL_NUM: - /* numeric input, accept and fall-thru */ - rc = kstrtoul(instr, 0, &inrep); - if (rc) { - pr_err("expecting numeric input: %s > %s\n", instr, KP_NAME(kp)); - return -EINVAL; - } - break; - default: - pr_err("%s: bad map type: %d\n", KP_NAME(kp), map->map_type); + char *nl; + + rc = kstrtoul(instr, 0, &inrep); + if (rc) { + nl = strchr(instr, '\n'); + if (nl) + *nl = '\0'; + pr_err("expecting numeric input, not: %s > %s\n", instr, KP_NAME(kp)); return -EINVAL; } - /* only _BITS,_NUM (numeric) map-types get here */ switch (map->map_type) { case DD_CLASS_TYPE_DISJOINT_BITS: /* expect bits. mask and warn if too many */ @@ -798,12 +715,8 @@ int param_get_dyndbg_classes(char *buffer, const struct kernel_param *kp) const struct ddebug_class_map *map = dcp->map; switch (map->map_type) { - - case DD_CLASS_TYPE_DISJOINT_NAMES: case DD_CLASS_TYPE_DISJOINT_BITS: return scnprintf(buffer, PAGE_SIZE, "0x%lx\n", *dcp->bits); - - case DD_CLASS_TYPE_LEVEL_NAMES: case DD_CLASS_TYPE_LEVEL_NUM: return scnprintf(buffer, PAGE_SIZE, "%ld\n", *dcp->lvl); default: diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c index a01f0193a419..229eaadee838 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -102,10 +102,6 @@ static void do_cats(void) { pr_debug("doing categories\n"); - prdbg(LOW); - prdbg(MID); - prdbg(HI); - prdbg(D2_CORE); prdbg(D2_DRIVER); prdbg(D2_KMS); @@ -129,14 +125,6 @@ static void do_levels(void) prdbg(V5); prdbg(V6); prdbg(V7); - - prdbg(L1); - prdbg(L2); - prdbg(L3); - prdbg(L4); - prdbg(L5); - prdbg(L6); - prdbg(L7); } static void do_prints(void) From patchwork Fri Oct 13 22:48:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421827 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7C159CDB47E for ; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:46 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 14/25] dyndbg-API: fix CONFIG_DRM_USE_DYNAMIC_DEBUG regression Date: Fri, 13 Oct 2023 16:48:06 -0600 Message-ID: <20231013224818.3456409-15-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tvrtko Ursulin , lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" DECLARE_DYNDBG_CLASSMAP() has a design error; it fails a basic K&R rule: "define once, refer many times". When DRM_USE_DYNAMIC_DEBUG=y, DECLARE_DYNDBG_CLASSMAP() is used across DRM core & drivers; they all repeat the same classmap-defn args, which must match for the modules to respond together when DRM.debug categories are enabled. Worse, it causes the CONFIG_DRM_USE_DYNAMIC_DEBUG=Y regression; 1st drm.ko loads, and dyndbg initializes its DRM.debug callsites, then a drm-driver loads, but too late - it missed the DRM.debug enablement. So replace it with 2 macros: DYNDBG_CLASSMAP_DEFINE - invoked once from core - drm.ko DYNDBG_CLASSMAP_USE - from all drm drivers and helpers. DYNDBG_CLASSMAP_DEFINE: based on DECLARE_DYNDBG_CLASSMAP, but now it drops the static on the constructed classmap variable, and exports it instead. DYNDBG_CLASSMAP_USE: then refers to the exported var by name: * used from drivers, helper-mods * lets us drop the repetitive "classname" args * fixes 2nd-defn problem * creates a ddebug_class_user record in new __dyndbg_class_users section this allows ddebug_add_module(etal) to handle them per-module. The distinction, and the usage record, allows dyndbg to initialize the driver's DRM.debug callsites separately after it is modprobed. Since DRM now needs updates to use the new macros, it also gets 2 wrappers: DRM_CLASSMAP_DEFINE, DRM_CLASSMAP_USE which declutter the users by hiding the ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG. To review, dyndbg's existing __dyndbg_classes[] section does: . catalogs the classmaps defined by the module (or builtin modules) . authorizes dyndbg to >control those class'd prdbgs for the module. . DYNDBG_CLASSMAP_DEFINE(and old one) creates classmaps in this section. This patch adds __dyndbg_class_users[] section: . catalogs uses/references to the classmap definitions. . authorizes dyndbg to >control those class'd prdbgs in ref'g module. . DYNDBG_CLASSMAP_USE() creates classmap-user records in this section. Now ddebug_add_module(etal) can handle classmap-uses like (and after) classmaps; when a dependent module is loaded, its parent's kernel params are scanned to find the param wired to dyndbg-param-ops, whose classmap matches the one ref'd by the client. To support this, theres a few data/header changes: . new struct ddebug_class_user contains: user-module-name, &classmap-defn it records drm-driver's use of a classmap in the section, allowing lookup struct ddebug_info gets 2 new fields to encapsulate the new section: class_users, num_class_users. set by dynamic_debug_init() for builtins. or by kernel/module/main:load_info() for loadable modules. vmlinux.lds.h: new BOUNDED_SECTION for __dyndbg_class_users dynamic_debug.c has 2 changes in ddebug_add_module(), ddebug_change(): ddebug_add_module() already calls ddebug_attach_module_classes() to handle classmaps DEFINEd by a module, now it also calls ddebug_attach_user_module_classes() to handle USEd classmaps. To avoid this work when possible, 1st scan the module's descriptors and count the number of class'd pr_debugs. ddebug_attach_user_module_classes() scans the module's class_users section, follows the refs to the parent's classmap, and calls ddebug_apply_params() on each. It also avoids work by checking the module's class-ct. ddebug_apply_params(new fn): It scans module's/builtin kernel-params, calls ddebug_match_apply_kparam for each to find the params/sysfs-nodes which may be wired to a classmap. ddebug_match_apply_kparam(new fn): 1st, it tests the kernel-param.ops is dyndbg's; this guarantees that the attached arg is a struct ddebug_class_param, which has a ref to the param's state, and to the classmap defining the param's handling. 2nd, it requires that the classmap ref'd by the kparam is the one we're called for; modules can use many separate classmaps (as test_dynamic_debug does). Then apply the "parent" kparam's setting to the dependent module, using ddebug_apply_class_bitmap(). ddebug_change(and callees) also gets adjustments: ddebug_find_valid_class(): This does a search over the module's classmaps, looking for the class FOO echo'd to >control. So now it searches over __dyndbg_class_users[] after __dyndbg_classes[]. ddebug_class_name(): return class-names for defined AND used classes. test_dynamic_debug.c, test_dynamic_debug_submod.c: This (already) demonstrates the 2 types of classmaps & sysfs-params, following the 4-part recipe: 1. define an enum for the classmap: DRM.debug has DRM_UT_{CORE,KMS,...} multiple classes must share 0-62 classid space. 2. DYNDBG_CLASSMAP_DEFINE(.. DRM_UT_{CORE,KMS,...}) 3. DYNDBG_CLASSMAP_PARAM* (classmap) 4. DYNDBG_CLASSMAP_USE() by _submod only, skipping 2,3 Move all the enum declarations together, to better explain how they share the 0..62 class-id space available to a module (non-overlapping subranges). reorg macros 2,3 by name. This gives a tabular format, making it easy to see the pattern of repetition, and the points of change. And extend the test to replicate the 2-module (parent & dependent) scenario which caused the CONFIG_DRM_USE_DYNAMIC_DEBUG=y regression seen in drm & drivers. The _submod.c is a 2-line file: #define _SUBMOD, #include parent. This gives identical complements of prdbgs in parent & _submod, and thus identical print behavior when all of: >control, >params, and parent->_submod propagation are working correctly. It also puts all the parent/_submod declarations together in the same source, with the new ifdef _SUBMOD block invoking DYNDBG_CLASSMAP_USE for the 2 test-interfaces. I think this is clearer. These 2 modules are independently configurable, allowing builtin parent and loadable submod, which recapitulates a troublesome build combo for drm & drivers. DEBUG details: ``#define DEBUG`` in src enables all pr_debugs after it, including any class'd pr_debugs; its not necessarily all-or-nothing, unless its a one-file-module with DEBUG at the top. If a CLASSMAP_PARAM is defined on a classmap, its readback value cannot describe the set of enablements. The param is basically write-only; it cannot know if `echo $cmd >control` was done since. To know the exact pr-debug state with certainty, toggle to both: echo 0x3ff > /sys/module/drm/parameters/debug echo 0 > /sys/module/drm/parameters/debug Cc: Daniel Vetter Cc: Jani Nikula Cc: Tvrtko Ursulin Cc: Rob Clark Cc: Sean Paul Cc: Luis Chamberlain Fixes: aad0214f3026 ("dyndbg: add DECLARE_DYNDBG_CLASSMAP macro") Fixes: f158936b60a7 ("drm: POC drm on dyndbg - use in core, 2 helpers, 3 drivers.") Ref: commit bb2ff6c27bc9 ("drm: Disable dynamic debug as broken") Signed-off-by: Jim Cromie --- fixup-kconfig description too short --- MAINTAINERS | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 12 +- drivers/gpu/drm/display/drm_dp_helper.c | 12 +- drivers/gpu/drm/drm_crtc_helper.c | 12 +- drivers/gpu/drm/drm_print.c | 25 ++-- drivers/gpu/drm/i915/i915_params.c | 12 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 12 +- include/asm-generic/vmlinux.lds.h | 1 + include/drm/drm_print.h | 10 +- include/linux/dynamic_debug.h | 53 +++++-- kernel/module/main.c | 3 + lib/Kconfig.debug | 24 +++- lib/Makefile | 3 + lib/dynamic_debug.c | 183 +++++++++++++++++++++--- lib/test_dynamic_debug.c | 127 ++++++++++------ lib/test_dynamic_debug_submod.c | 10 ++ 16 files changed, 348 insertions(+), 153 deletions(-) create mode 100644 lib/test_dynamic_debug_submod.c diff --git a/MAINTAINERS b/MAINTAINERS index 6c4cce45a09d..aa09ac8dbb39 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7302,7 +7302,7 @@ M: Jim Cromie S: Maintained F: include/linux/dynamic_debug.h F: lib/dynamic_debug.c -F: lib/test_dynamic_debug.c +F: lib/test_dynamic_debug*.c DYNAMIC INTERRUPT MODERATION M: Tal Gilboa diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 81edf66dbea8..efba99c9393e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -197,17 +197,7 @@ int amdgpu_user_partt_mode = AMDGPU_AUTO_COMPUTE_PARTITION_MODE; static void amdgpu_drv_delayed_reset_work_handler(struct work_struct *work); -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +DRM_CLASSMAP_USE(drm_debug_classes); struct amdgpu_mgpu_info mgpu_info = { .mutex = __MUTEX_INITIALIZER(mgpu_info.mutex), diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c index e6a78fd32380..d97de1a27939 100644 --- a/drivers/gpu/drm/display/drm_dp_helper.c +++ b/drivers/gpu/drm/display/drm_dp_helper.c @@ -41,17 +41,7 @@ #include "drm_dp_helper_internal.h" -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +DRM_CLASSMAP_USE(drm_debug_classes); struct dp_aux_backlight { struct backlight_device *base; diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index a209659a996c..fef4662d5f1f 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -50,17 +50,7 @@ #include "drm_crtc_helper_internal.h" -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +DRM_CLASSMAP_USE(drm_debug_classes); /** * DOC: overview diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 5b93c11895bb..dabcfa0dd279 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -55,18 +55,19 @@ MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug cat #if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) module_param_named(debug, __drm_debug, ulong, 0600); #else -/* classnames must match vals of enum drm_debug_category */ -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +/* classnames must match value-symbols of enum drm_debug_category */ +DRM_CLASSMAP_DEFINE(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, + DRM_UT_CORE, + "DRM_UT_CORE", + "DRM_UT_DRIVER", + "DRM_UT_KMS", + "DRM_UT_PRIME", + "DRM_UT_ATOMIC", + "DRM_UT_VBL", + "DRM_UT_STATE", + "DRM_UT_LEASE", + "DRM_UT_DP", + "DRM_UT_DRMRES"); static struct ddebug_class_param drm_debug_bitmap = { .bits = &__drm_debug, diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index 0a171b57fd8f..d870e15da21c 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -29,17 +29,7 @@ #include "i915_params.h" #include "i915_drv.h" -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +DRM_CLASSMAP_USE(drm_debug_classes); #define i915_param_named(name, T, perm, desc) \ module_param_named(name, i915_modparams.name, T, perm); \ diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 4396f501b16a..65006274be9d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -72,17 +72,7 @@ #include "nouveau_uvmm.h" #include "nouveau_sched.h" -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +DRM_CLASSMAP_USE(drm_debug_classes); MODULE_PARM_DESC(config, "option string to pass to driver core"); static char *nouveau_config; diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 67d8dd2f1bde..5451f926a753 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -366,6 +366,7 @@ /* implement dynamic printk debug */ \ . = ALIGN(8); \ BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes) \ + BOUNDED_SECTION_BY(__dyndbg_class_users, ___dyndbg_class_users) \ BOUNDED_SECTION_BY(__dyndbg, ___dyndbg) \ LIKELY_PROFILE() \ BRANCH_PROFILE() \ diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index a93a387f8a1a..706afc97c79c 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -276,7 +276,7 @@ static inline struct drm_printer drm_err_printer(const char *prefix) * */ enum drm_debug_category { - /* These names must match those in DYNAMIC_DEBUG_CLASSBITS */ + /* Keep DRM_CLASSMAP_DEFINE args in sync with any changes here */ /** * @DRM_UT_CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, * drm_memory.c, ... @@ -321,6 +321,14 @@ enum drm_debug_category { DRM_UT_DRMRES }; +#ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG +#define DRM_CLASSMAP_DEFINE(...) DYNDBG_CLASSMAP_DEFINE(__VA_ARGS__) +#define DRM_CLASSMAP_USE(name) DYNDBG_CLASSMAP_USE(name) +#else +#define DRM_CLASSMAP_DEFINE(...) +#define DRM_CLASSMAP_USE(name) +#endif + static inline bool drm_debug_enabled_raw(enum drm_debug_category category) { return unlikely(__drm_debug & BIT(category)); diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 8eaf8eabdc8d..1b027be2cdc4 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -58,7 +58,7 @@ struct _ddebug { #endif } __attribute__((aligned(8))); -enum class_map_type { +enum ddebug_class_map_type { DD_CLASS_TYPE_DISJOINT_BITS, /** * DD_CLASS_TYPE_DISJOINT_BITS: classes are independent, mapped to bits[0..N]. @@ -72,24 +72,27 @@ enum class_map_type { }; struct ddebug_class_map { - struct module *mod; - const char *mod_name; /* needed for builtins */ + const struct module *mod; /* NULL for builtins */ + const char *mod_name; const char **class_names; const int length; const int base; /* index of 1st .class_id, allows split/shared space */ - enum class_map_type map_type; + enum ddebug_class_map_type map_type; }; /** - * DECLARE_DYNDBG_CLASSMAP - declare classnames known by a module - * @_var: a struct ddebug_class_map, passed to module_param_cb - * @_type: enum class_map_type, chooses bits/verbose, numeric/symbolic - * @_base: offset of 1st class-name. splits .class_id space - * @classes: class-names used to control class'd prdbgs + * DYNDBG_CLASSMAP_DEFINE - define a set of debug-classes used by a module. + * @_var: name of the classmap, exported for other modules coordinated use. + * @_type: enum ddebug_class_map_type, chooses bits/verbose, numeric/names. + * @_base: offset of 1st class-name, used to share 0..62 classid space + * @classes: vals are stringified enum-vals, like DRM_UT_* + * + * Defines and exports a struct ddebug_class_map whose @classes are + * used to validate a "class FOO .." >control command on the module */ -#define DECLARE_DYNDBG_CLASSMAP(_var, _maptype, _base, ...) \ - static const char *_var##_classnames[] = { __VA_ARGS__ }; \ - static struct ddebug_class_map __aligned(8) __used \ +#define DYNDBG_CLASSMAP_DEFINE(_var, _maptype, _base, ...) \ + const char *_var##_classnames[] = { __VA_ARGS__ }; \ + struct ddebug_class_map __aligned(8) __used \ __section("__dyndbg_classes") _var = { \ .mod = THIS_MODULE, \ .mod_name = KBUILD_MODNAME, \ @@ -97,14 +100,40 @@ struct ddebug_class_map { .map_type = _maptype, \ .length = ARRAY_SIZE(_var##_classnames), \ .class_names = _var##_classnames, \ + }; \ + EXPORT_SYMBOL(_var) + +struct ddebug_class_user { + char *user_mod_name; + struct ddebug_class_map *map; +}; + +/** + * DYNDBG_CLASSMAP_USE - refer to a classmap, DEFINEd elsewhere. + * @_var: name of the exported classmap var + * + * This registers a module's use of another module's classmap defn, so + * dyndbg can authorize "class DRM_CORE ..." >control commands upon + * this module. + */ +#define DYNDBG_CLASSMAP_USE(_var) \ + DYNDBG_CLASSMAP_USE_(_var, __UNIQUE_ID(ddebug_class_user)) +#define DYNDBG_CLASSMAP_USE_(_var, _uname) \ + extern struct ddebug_class_map _var; \ + static struct ddebug_class_user __aligned(8) __used \ + __section("__dyndbg_class_users") _uname = { \ + .user_mod_name = KBUILD_MODNAME, \ + .map = &_var, \ } /* encapsulate linker provided built-in (or module) dyndbg data */ struct _ddebug_info { struct _ddebug *descs; struct ddebug_class_map *classes; + struct ddebug_class_user *class_users; unsigned int num_descs; unsigned int num_classes; + unsigned int num_class_users; }; struct ddebug_class_param { diff --git a/kernel/module/main.c b/kernel/module/main.c index 98fedfdb8db5..6b0b0d82b5ab 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -2214,6 +2214,9 @@ static int find_module_sections(struct module *mod, struct load_info *info) mod->dyndbg_info.classes = section_objs(info, "__dyndbg_classes", sizeof(*mod->dyndbg_info.classes), &mod->dyndbg_info.num_classes); + mod->dyndbg_info.class_users = section_objs(info, "__dyndbg_class_users", + sizeof(*mod->dyndbg_info.class_users), + &mod->dyndbg_info.num_class_users); #endif return 0; diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index fa307f93fa2e..afca34ca9da9 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2808,12 +2808,26 @@ config TEST_STATIC_KEYS If unsure, say N. config TEST_DYNAMIC_DEBUG - tristate "Test DYNAMIC_DEBUG" - depends on DYNAMIC_DEBUG + tristate "Build test-dynamic-debug module" + depends on DYNAMIC_DEBUG || DYNAMIC_DEBUG_CORE + help + This module exersizes/demonstrates dyndbg's classmap API, by + creating 2 classes: a DISJOINT classmap (supporting DRM.debug) + and a LEVELS/VERBOSE classmap (like verbose2 > verbose1). + + If unsure, say N. + +config TEST_DYNAMIC_DEBUG_SUBMOD + tristate "Build test-dynamic-debug submodule" + default m + depends on DYNAMIC_DEBUG || DYNAMIC_DEBUG_CORE + depends on TEST_DYNAMIC_DEBUG help - This module registers a tracer callback to count enabled - pr_debugs in a 'do_debugging' function, then alters their - enablements, calls the function, and compares counts. + This sub-module uses a classmap defined and exported by the + parent module, recapitulating drm & driver's shared use of + drm.debug to control enabled debug-categories. + It is tristate, independent of parent, to allow testing all + proper combinations of parent=y/m submod=y/m. If unsure, say N. diff --git a/lib/Makefile b/lib/Makefile index 740109b6e2c8..2d4c7b689bbf 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -81,6 +81,7 @@ obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o +obj-$(CONFIG_TEST_DYNAMIC_DEBUG_SUBMOD) += test_dynamic_debug_submod.o obj-$(CONFIG_TEST_PRINTF) += test_printf.o obj-$(CONFIG_TEST_SCANF) += test_scanf.o @@ -240,6 +241,8 @@ obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o #ensure exported functions have prototypes CFLAGS_dynamic_debug.o := -DDYNAMIC_DEBUG_MODULE +CFLAGS_test_dynamic_debug.o := -DDYNAMIC_DEBUG_MODULE +CFLAGS_test_dynamic_debug_submod.o := -DDYNAMIC_DEBUG_MODULE obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 91c8b67fd8f8..be49e104ec76 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -43,13 +43,16 @@ extern struct _ddebug __start___dyndbg[]; extern struct _ddebug __stop___dyndbg[]; extern struct ddebug_class_map __start___dyndbg_classes[]; extern struct ddebug_class_map __stop___dyndbg_classes[]; +extern struct ddebug_class_user __start___dyndbg_class_users[]; +extern struct ddebug_class_user __stop___dyndbg_class_users[]; struct ddebug_table { struct list_head link; const char *mod_name; struct _ddebug *ddebugs; struct ddebug_class_map *classes; - unsigned int num_ddebugs, num_classes; + struct ddebug_class_user *class_users; + unsigned int num_ddebugs, num_classes, num_class_users; }; struct ddebug_query { @@ -148,21 +151,39 @@ static void vpr_info_dq(const struct ddebug_query *query, const char *msg) query->first_lineno, query->last_lineno, query->class_string); } +#define vpr_dt_info(dt_p, msg_p, ...) ({ \ + struct ddebug_table const *_dt = dt_p; \ + v2pr_info(msg_p " module:%s nd:%d nc:%d nu:%d\n", ##__VA_ARGS__, \ + _dt->mod_name, _dt->num_ddebugs, _dt->num_classes, \ + _dt->num_class_users); \ + }) + #define __outvar /* filled by callee */ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table const *dt, const char *class_string, __outvar int *class_id) { struct ddebug_class_map *map; + struct ddebug_class_user *cli; int i, idx; - for (map = dt->classes, i = 0; i < dt->num_classes; i++, map++) { + for (i = 0, map = dt->classes; i < dt->num_classes; i++, map++) { idx = match_string(map->class_names, map->length, class_string); if (idx >= 0) { *class_id = idx + map->base; + vpr_dt_info(dt, "good-class: %s.%s ", map->mod_name, class_string); return map; } } + for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++) { + idx = match_string(cli->map->class_names, cli->map->length, class_string); + if (idx >= 0) { + *class_id = idx + cli->map->base; + vpr_dt_info(dt, "class-ref: %s.%s ", + cli->user_mod_name, class_string); + return cli->map; + } + } *class_id = -ENOENT; return NULL; } @@ -555,7 +576,7 @@ static int ddebug_exec_query(char *query_string, const char *modname) /* handle multiple queries in query string, continue on error, return last error or number of matching callsites. Module name is either - in param (for boot arg) or perhaps in query string. + in the modname arg (for boot args) or perhaps in query string. */ static int ddebug_exec_queries(char *query, const char *modname) { @@ -684,12 +705,12 @@ static int param_set_dyndbg_module_classes(const char *instr, } /** - * param_set_dyndbg_classes - class FOO >control + * param_set_dyndbg_classes - set all classes in a classmap * @instr: string echo>d to sysfs, input depends on map_type - * @kp: kp->arg has state: bits/lvl, map, map_type + * @kp: kp->arg has state: bits/lvl, classmap, map_type * - * Enable/disable prdbgs by their class, as given in the arguments to - * DECLARE_DYNDBG_CLASSMAP. For LEVEL map-types, enforce relative + * For all classes in the classmap, enable/disable them per the input + * (depending on map_type). For LEVEL map-types, enforce relative * levels by bitpos. * * Returns: 0 or <0 if error. @@ -1034,12 +1055,17 @@ static void *ddebug_proc_next(struct seq_file *m, void *p, loff_t *pos) static const char *ddebug_class_name(struct ddebug_table *dt, struct _ddebug *dp) { struct ddebug_class_map *map = dt->classes; + struct ddebug_class_user *cli = dt->class_users; int i; for (i = 0; i < dt->num_classes; i++, map++) if (class_in_range(dp->class_id, map)) return map->class_names[dp->class_id - map->base]; + for (i = 0; i < dt->num_class_users; i++, cli++) + if (class_in_range(dp->class_id, cli->map)) + return cli->map->class_names[dp->class_id - cli->map->base]; + return NULL; } @@ -1120,31 +1146,133 @@ static const struct proc_ops proc_fops = { .proc_write = ddebug_proc_write }; +static const char * const ddebug_classmap_typenames[] = { + "DISJOINT_BITS", "LEVEL_NUM", "DISJOINT_NAMES", "LEVEL_NAMES" +}; + +#define vpr_cm_info(cm_p, msg_p, ...) ({ \ + struct ddebug_class_map const *_cm = cm_p; \ + v2pr_info(msg_p " module:%s base:%d len:%d type:%s\n", ##__VA_ARGS__, \ + _cm->mod_name, _cm->base, _cm->length, \ + ddebug_classmap_typenames[_cm->map_type]); \ + }) + +static void ddebug_sync_classbits(const struct ddebug_class_param *dcp, const char *modname) +{ + /* clamp initial bitvec, mask off hi-bits */ + if (*dcp->bits & ~CLASSMAP_BITMASK(dcp->map->length)) { + *dcp->bits &= CLASSMAP_BITMASK(dcp->map->length); + v2pr_info("preset classbits: %lx\n", *dcp->bits); + } + /* force class'd prdbgs (in USEr module) to match (DEFINEr module) class-param */ + ddebug_apply_class_bitmap(dcp, dcp->bits, ~0, modname); + ddebug_apply_class_bitmap(dcp, dcp->bits, 0, modname); +} + +static void ddebug_match_apply_kparam(const struct kernel_param *kp, + const struct ddebug_class_map *map, + const char *modnm) +{ + struct ddebug_class_param *dcp; + + if (kp->ops != ¶m_ops_dyndbg_classes) + return; + + dcp = (struct ddebug_class_param *)kp->arg; + + if (map == dcp->map) { + v2pr_info("found kp:%s =0x%lx", kp->name, *dcp->bits); + vpr_cm_info(map, "mapped to:"); + ddebug_sync_classbits(dcp, modnm); + } +} + +static void ddebug_apply_params(const struct ddebug_class_map *cm, const char *modnm) +{ + const struct kernel_param *kp; +#if IS_ENABLED(CONFIG_MODULES) + int i; + + if (cm->mod) { + vpr_cm_info(cm, "loaded class:"); + for (i = 0, kp = cm->mod->kp; i < cm->mod->num_kp; i++, kp++) + ddebug_match_apply_kparam(kp, cm, modnm); + } +#endif + if (!cm->mod) { + vpr_cm_info(cm, "builtin class:"); + for (kp = __start___param; kp < __stop___param; kp++) + ddebug_match_apply_kparam(kp, cm, modnm); + } +} + +/* + * Find this module's classmaps in a sub/whole-range of the builtin/ + * modular classmap vector/section. Save the start and length of the + * subrange at its edges. + */ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug_info *di) { struct ddebug_class_map *cm; int i, nc = 0; - /* - * Find this module's classmaps in a subrange/wholerange of - * the builtin/modular classmap vector/section. Save the start - * and length of the subrange at its edges. - */ - for (cm = di->classes, i = 0; i < di->num_classes; i++, cm++) { + for (i = 0, cm = di->classes; i < di->num_classes; i++, cm++) { if (!strcmp(cm->mod_name, dt->mod_name)) { - if (!nc) { - v2pr_info("start subrange, class[%d]: module:%s base:%d len:%d ty:%d\n", - i, cm->mod_name, cm->base, cm->length, cm->map_type); + vpr_cm_info(cm, "classes[%d]:", i); + if (!nc++) dt->classes = cm; - } - nc++; } } - if (nc) { - dt->num_classes = nc; - vpr_info("module:%s attached %d classes\n", dt->mod_name, nc); + if (!nc) + return; + + vpr_info("module:%s attached %d classes\n", dt->mod_name, nc); + dt->num_classes = nc; + + for (i = 0, cm = dt->classes; i < dt->num_classes; i++, cm++) + ddebug_apply_params(cm, cm->mod_name); +} + +/* + * propagates class-params thru their classmaps to class-users. this + * means a query against the dt/module, which means it must be on the + * list to be seen by ddebug_change. + */ +static void ddebug_attach_user_module_classes(struct ddebug_table *dt, + const struct _ddebug_info *di) +{ + struct ddebug_class_user *cli; + int i, nc = 0; + + /* + * For builtins: scan the array, find start/length of this + * module's refs, save to dt. For loadables, this is the + * whole array. + */ + for (i = 0, cli = di->class_users; i < di->num_class_users; i++, cli++) { + + if (WARN_ON(!cli || !cli->map || !cli->user_mod_name)) + continue; + + if (!strcmp(cli->user_mod_name, dt->mod_name)) { + + vpr_cm_info(cli->map, "class_ref[%d] %s -> %s", i, + cli->user_mod_name, cli->map->mod_name); + if (!nc++) + dt->class_users = cli; + } } + if (!nc) + return; + + dt->num_class_users = nc; + + /* now iterate dt */ + for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++) + ddebug_apply_params(cli->map, cli->user_mod_name); + + vpr_dt_info(dt, "attach-client-module: "); } /* @@ -1154,6 +1282,8 @@ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug static int ddebug_add_module(struct _ddebug_info *di, const char *modname) { struct ddebug_table *dt; + struct _ddebug *iter; + int i, class_ct = 0; if (!di->num_descs) return 0; @@ -1177,13 +1307,20 @@ static int ddebug_add_module(struct _ddebug_info *di, const char *modname) INIT_LIST_HEAD(&dt->link); - if (di->classes && di->num_classes) + for_each_boxed_vector(di, descs, num_descs, i, iter) + if (iter->class_id != _DPRINTK_CLASS_DFLT) + class_ct++; + + if (class_ct && di->num_classes) ddebug_attach_module_classes(dt, di); mutex_lock(&ddebug_lock); list_add_tail(&dt->link, &ddebug_tables); mutex_unlock(&ddebug_lock); + if (class_ct && di->num_class_users) + ddebug_attach_user_module_classes(dt, di); + vpr_info("%3u debug prints in module %s\n", di->num_descs, modname); return 0; } @@ -1333,8 +1470,10 @@ static int __init dynamic_debug_init(void) struct _ddebug_info di = { .descs = __start___dyndbg, .classes = __start___dyndbg_classes, + .class_users = __start___dyndbg_class_users, .num_descs = __stop___dyndbg - __start___dyndbg, .num_classes = __stop___dyndbg_classes - __start___dyndbg_classes, + .num_class_users = __stop___dyndbg_class_users - __start___dyndbg_class_users, }; #ifdef CONFIG_MODULES diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c index 229eaadee838..23967071b60f 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -6,11 +6,15 @@ * Jim Cromie */ -#define pr_fmt(fmt) "test_dd: " fmt +#if defined(TEST_DYNAMIC_DEBUG_SUBMOD) + #define pr_fmt(fmt) "test_dd_submod: " fmt +#else + #define pr_fmt(fmt) "test_dd: " fmt +#endif #include -/* run tests by reading or writing sysfs node: do_prints */ +/* re-gen output by reading or writing sysfs node: do_prints */ static void do_prints(void); /* device under test */ static int param_set_do_prints(const char *instr, const struct kernel_param *kp) @@ -29,24 +33,39 @@ static const struct kernel_param_ops param_ops_do_prints = { }; module_param_cb(do_prints, ¶m_ops_do_prints, NULL, 0600); -/* - * Using the CLASSMAP api: - * - classmaps must have corresponding enum - * - enum symbols must match/correlate with class-name strings in the map. - * - base must equal enum's 1st value - * - multiple maps must set their base to share the 0-30 class_id space !! - * (build-bug-on tips welcome) - * Additionally, here: - * - tie together sysname, mapname, bitsname, flagsname - */ -#define DD_SYS_WRAP(_model, _flags) \ - static unsigned long bits_##_model; \ - static struct ddebug_class_param _flags##_model = { \ +#define CLASSMAP_BITMASK(width, base) (((1UL << (width)) - 1) << base) + +/* sysfs param wrapper, proto-API */ +#define DYNDBG_CLASSMAP_PARAM_(_model, _flags, _init) \ + static unsigned long bits_##_model = _init; \ + static struct ddebug_class_param _flags##_##_model = { \ .bits = &bits_##_model, \ .flags = #_flags, \ .map = &map_##_model, \ }; \ - module_param_cb(_flags##_##_model, ¶m_ops_dyndbg_classes, &_flags##_model, 0600) + module_param_cb(_flags##_##_model, ¶m_ops_dyndbg_classes, \ + &_flags##_##_model, 0600) +#ifdef DEBUG +#define DYNDBG_CLASSMAP_PARAM(_model, _flags) DYNDBG_CLASSMAP_PARAM_(_model, _flags, ~0) +#else +#define DYNDBG_CLASSMAP_PARAM(_model, _flags) DYNDBG_CLASSMAP_PARAM_(_model, _flags, 0) +#endif + +/* + * Demonstrate/test all 4 class-typed classmaps with a sys-param. + * + * Each is 3 part: client-enum decl, _DEFINE, _PARAM. + * Declare them in blocks to show patterns of use (repetitions and + * changes) within each. + * + * 1st, dyndbg expects a client-provided enum-type as source of + * category/classid truth. DRM has DRM_UT_. + * + * Modules with multiple CLASSMAPS must have enums with distinct + * value-ranges, arranged below with explicit enum_sym = X inits. + * + * Declare all 4 enums now, for different types + */ /* numeric input, independent bits */ enum cat_disjoint_bits { @@ -60,40 +79,57 @@ enum cat_disjoint_bits { D2_LEASE, D2_DP, D2_DRMRES }; -DECLARE_DYNDBG_CLASSMAP(map_disjoint_bits, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "D2_CORE", - "D2_DRIVER", - "D2_KMS", - "D2_PRIME", - "D2_ATOMIC", - "D2_VBL", - "D2_STATE", - "D2_LEASE", - "D2_DP", - "D2_DRMRES"); -DD_SYS_WRAP(disjoint_bits, p); -DD_SYS_WRAP(disjoint_bits, T); - -/* symbolic input, independent bits */ -enum cat_disjoint_names { LOW = 10, MID, HI }; -DECLARE_DYNDBG_CLASSMAP(map_disjoint_names, DD_CLASS_TYPE_DISJOINT_NAMES, 10, - "LOW", "MID", "HI"); -DD_SYS_WRAP(disjoint_names, p); -DD_SYS_WRAP(disjoint_names, T); /* numeric verbosity, V2 > V1 related */ enum cat_level_num { V0 = 14, V1, V2, V3, V4, V5, V6, V7 }; -DECLARE_DYNDBG_CLASSMAP(map_level_num, DD_CLASS_TYPE_LEVEL_NUM, 14, - "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7"); -DD_SYS_WRAP(level_num, p); -DD_SYS_WRAP(level_num, T); -/* symbolic verbosity */ +/* named-symbolic input, independent bits */ +enum cat_disjoint_names { LOW = 10, MID, HI }; + +/* named-symbolic verbosity */ enum cat_level_names { L0 = 22, L1, L2, L3, L4, L5, L6, L7 }; -DECLARE_DYNDBG_CLASSMAP(map_level_names, DD_CLASS_TYPE_LEVEL_NAMES, 22, - "L0", "L1", "L2", "L3", "L4", "L5", "L6", "L7"); -DD_SYS_WRAP(level_names, p); -DD_SYS_WRAP(level_names, T); + +/* recapitulate DRM's parent(drm.ko) <-- _submod(drivers,helpers) */ +#if !defined(TEST_DYNAMIC_DEBUG_SUBMOD) +/* + * In single user, or parent / coordinator (drm.ko) modules, define + * classmaps on the client enums above, and then declares the PARAMS + * ref'g the classmaps. Each is exported. + */ +DYNDBG_CLASSMAP_DEFINE(map_disjoint_bits, DD_CLASS_TYPE_DISJOINT_BITS, + D2_CORE, + "D2_CORE", + "D2_DRIVER", + "D2_KMS", + "D2_PRIME", + "D2_ATOMIC", + "D2_VBL", + "D2_STATE", + "D2_LEASE", + "D2_DP", + "D2_DRMRES"); + +DYNDBG_CLASSMAP_DEFINE(map_level_num, DD_CLASS_TYPE_LEVEL_NUM, + V0, "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7"); + +/* + * now add the sysfs-params + */ + +DYNDBG_CLASSMAP_PARAM(disjoint_bits, p); +DYNDBG_CLASSMAP_PARAM(level_num, p); + +#else /* TEST_DYNAMIC_DEBUG_SUBMOD */ + +/* + * in submod/drm-drivers, use the classmaps defined in top/parent + * module above. + */ + +DYNDBG_CLASSMAP_USE(map_disjoint_bits); +DYNDBG_CLASSMAP_USE(map_level_num); + +#endif /* stand-in for all pr_debug etc */ #define prdbg(SYM) __pr_debug_cls(SYM, #SYM " msg\n") @@ -129,6 +165,7 @@ static void do_levels(void) static void do_prints(void) { + pr_debug("do_prints:\n"); do_cats(); do_levels(); } diff --git a/lib/test_dynamic_debug_submod.c b/lib/test_dynamic_debug_submod.c new file mode 100644 index 000000000000..9a893402ce1a --- /dev/null +++ b/lib/test_dynamic_debug_submod.c @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Kernel module for testing dynamic_debug + * + * Authors: + * Jim Cromie + */ + +#define TEST_DYNAMIC_DEBUG_SUBMOD +#include "test_dynamic_debug.c" From patchwork Fri Oct 13 22:48:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421854 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A4590CDB488 for ; Fri, 13 Oct 2023 22:49:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5A65410E665; Fri, 13 Oct 2023 22:48:56 +0000 (UTC) Received: from mail-il1-x12a.google.com (mail-il1-x12a.google.com [IPv6:2607:f8b0:4864:20::12a]) by gabe.freedesktop.org (Postfix) with ESMTPS id B7C8910E664; Fri, 13 Oct 2023 22:48:48 +0000 (UTC) Received: by mail-il1-x12a.google.com with SMTP id e9e14a558f8ab-35748b32d73so10075305ab.0; Fri, 13 Oct 2023 15:48:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237328; x=1697842128; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tXsSOg8f2yCgJEL2pCIM6ReAyW7r5JJg4FpT0/i3350=; b=ZpyNQPrZnIX/SmHU/hK+hxBzIENsHYy+hD+6uL7dDYKkNZmyQk0cFmbnUdyx4orh7/ TrYzFXGdGLEgTfkEnKihT8DCdvJ5KjGc4sPem6HzOjKVt52mmz38N6nOX3E2cgL2mN9S D1hT2s9XSw5/rpZak6YyvOONFjC66D7DJ5NcNIzfJpusyE9wrMVu/y4hZF5iIMRJ4JnN 8EmK9Cv3BE1e6LCMFjR2UyxegSPno56rc08XjfJCGfsbELdPpbL1pBo0oU++NggZRsJF 49aL6sIfIodigjciTEUymGlAHtNqxB3t3F2TCbXRuvCYTqUsfNgoQ041jnxrlaFTplgI tBCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237328; x=1697842128; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tXsSOg8f2yCgJEL2pCIM6ReAyW7r5JJg4FpT0/i3350=; b=VCQuPZYFazl+FBmQL8JxvYJAUY0x1nTY2TBytH0pvagBMB1BDBeWk/C+SNqytMhgFw i+h/aoRC04uITxHX9sLoKNr0nzZrrir3JDZaEZ4HE8ovPTjKmElrMEL+4btOtFdVVhka atsngrTJOx3ZwtX+W7H0aji1scaYWc8Vr4p4w9MlYEndNXWqUY95JNr/rqVRoRKWY7ZK wOhtMd4xpExuVk5wE7jzy4vje1MoVntqveBC96A3Mh31LiQGpg6L3Wjga9bsZp+rJiJI 2STQQFs5yr3FN00oavZSNTUll/8fJ2YMCTKEAPiCZgo/F0NBMt/OVFHaOP64gxQo74Ke Y8AQ== X-Gm-Message-State: AOJu0Yy0Yck7JTOKZf3D0bPpwqb9nttBaWYzLbcY5FfRGJsZF57usptk KnNsveHM6Luf6/7mmbWIh10= X-Google-Smtp-Source: AGHT+IE9rlOoTxWanAIhwXH3c3A7MPp5nT4G7OQtkPlxA2nnFxv/BQDSaMbqdKcAurhuWGzqbDPnaw== X-Received: by 2002:a05:6e02:3201:b0:34f:ef94:c803 with SMTP id cd1-20020a056e02320100b0034fef94c803mr27776695ilb.25.1697237328040; Fri, 13 Oct 2023 15:48:48 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:47 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 15/25] dyndbg: add for_each_boxed_vector Date: Fri, 13 Oct 2023 16:48:07 -0600 Message-ID: <20231013224818.3456409-16-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a for_each iterator to walk a counted vector member in a struct (ie the box), and use it to replace 8 open-coded loops. Signed-off-by: Jim Cromie --- v5- parens-on-box-force-precedence --- lib/dynamic_debug.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index be49e104ec76..c11feca70d6f 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -158,6 +158,9 @@ static void vpr_info_dq(const struct ddebug_query *query, const char *msg) _dt->num_class_users); \ }) +#define for_each_boxed_vector(_box, _vec, _len, _ct, _curs) \ + for (_ct = 0, _curs = (_box)->_vec; _ct < (_box)->_len; _ct++, _curs++) + #define __outvar /* filled by callee */ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table const *dt, const char *class_string, @@ -167,7 +170,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons struct ddebug_class_user *cli; int i, idx; - for (i = 0, map = dt->classes; i < dt->num_classes; i++, map++) { + for_each_boxed_vector(dt, classes, num_classes, i, map) { idx = match_string(map->class_names, map->length, class_string); if (idx >= 0) { *class_id = idx + map->base; @@ -175,7 +178,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons return map; } } - for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++) { + for_each_boxed_vector(dt, class_users, num_class_users, i, cli) { idx = match_string(cli->map->class_names, cli->map->length, class_string); if (idx >= 0) { *class_id = idx + cli->map->base; @@ -1058,11 +1061,11 @@ static const char *ddebug_class_name(struct ddebug_table *dt, struct _ddebug *dp struct ddebug_class_user *cli = dt->class_users; int i; - for (i = 0; i < dt->num_classes; i++, map++) + for_each_boxed_vector(dt, classes, num_classes, i, map) if (class_in_range(dp->class_id, map)) return map->class_names[dp->class_id - map->base]; - for (i = 0; i < dt->num_class_users; i++, cli++) + for_each_boxed_vector(dt, class_users, num_class_users, i, cli) if (class_in_range(dp->class_id, cli->map)) return cli->map->class_names[dp->class_id - cli->map->base]; @@ -1216,7 +1219,7 @@ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug struct ddebug_class_map *cm; int i, nc = 0; - for (i = 0, cm = di->classes; i < di->num_classes; i++, cm++) { + for_each_boxed_vector(di, classes, num_classes, i, cm) { if (!strcmp(cm->mod_name, dt->mod_name)) { vpr_cm_info(cm, "classes[%d]:", i); @@ -1230,7 +1233,7 @@ static void ddebug_attach_module_classes(struct ddebug_table *dt, struct _ddebug vpr_info("module:%s attached %d classes\n", dt->mod_name, nc); dt->num_classes = nc; - for (i = 0, cm = dt->classes; i < dt->num_classes; i++, cm++) + for_each_boxed_vector(di, classes, num_classes, i, cm) ddebug_apply_params(cm, cm->mod_name); } @@ -1250,7 +1253,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt, * module's refs, save to dt. For loadables, this is the * whole array. */ - for (i = 0, cli = di->class_users; i < di->num_class_users; i++, cli++) { + for_each_boxed_vector(di, class_users, num_class_users, i, cli) { if (WARN_ON(!cli || !cli->map || !cli->user_mod_name)) continue; @@ -1268,8 +1271,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt, dt->num_class_users = nc; - /* now iterate dt */ - for (i = 0, cli = dt->class_users; i < dt->num_class_users; i++, cli++) + for_each_boxed_vector(di, class_users, num_class_users, i, cli) ddebug_apply_params(cli->map, cli->user_mod_name); vpr_dt_info(dt, "attach-client-module: "); From patchwork Fri Oct 13 22:48:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421855 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 80CF9CDB47E for ; Fri, 13 Oct 2023 22:49:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D8D6410E68B; Fri, 13 Oct 2023 22:48:56 +0000 (UTC) Received: from mail-il1-x131.google.com (mail-il1-x131.google.com [IPv6:2607:f8b0:4864:20::131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 04D1010E67B; Fri, 13 Oct 2023 22:48:50 +0000 (UTC) Received: by mail-il1-x131.google.com with SMTP id e9e14a558f8ab-35135f69de2so9146975ab.2; Fri, 13 Oct 2023 15:48:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237329; x=1697842129; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gKUPZJG7I4VMa4iERW/Xn8lzZwDxy57eOqc/z/Cxr40=; b=GJJDBiewk/ZhGhSPpsVGb/xJ+NfJnn9iL5TU0LejL3ObmIl/+M0GfBNc7MQyyz6nxI aW8CG2y3OK6il85HPY/S/DM2mBcQztc3DpvKP2bP+g8KSO58+E5AE6YJM4xyesV+4jkI L1j2j2zNXS5jSfJ5tOHtFWxBHLvuo/gIPfHW7frNTqHlM983SDr7Hv0QDveQwuvBcODq e9IequOrcyRF0DdsycIhhC/qyDxvWWcgdr/hfVD/rGxf+Z9xyWhxdGv7GnewA+6buBbr +je4Y6mfA6K8C80tiinOeyT0QkeNy8mfLP2CBTbffaSMVwf5AcFRYKG+Ylm9k+qO4xIW c9Uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237329; x=1697842129; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gKUPZJG7I4VMa4iERW/Xn8lzZwDxy57eOqc/z/Cxr40=; b=WrClfZrLgSSMIFmJZVN5lswjqFZoSehscRoTINXqxY+BZWFR5G8Kp9OOASw1vPbcic UJBKFf7liQqXTMB7cRhg779Bu5rLQyuGobIHW1M4mvylEVJSfswMNWSQmi1pw40pbSgF T5Bk8tsRGoHavLRGGWlECz7SujznjJxF9tSQ9aFl9maFCpH02ViZaDo5gN94RV9OIAY5 KN3saROVYC7YNhueznBBBOUoHjapK1dPcgwMPLgAZLaSi0J89NiRUR9MyuhQL2Sk4YOp 2zW3JHNzuQb/bXyS+vlY2mR1OdHYL47svCvYtB02u9634P5vS2g3gEIRJvC+fOp510kU Xy8A== X-Gm-Message-State: AOJu0Yzl+4RMnmZEjAGH7VSgOL/K7hyvDOUMfnmpqDlj6+LJi44lTPVS nCN3zjp1oGox4ApJoEHgTWc= X-Google-Smtp-Source: AGHT+IGSKIllwM49YRqlNVGZtgj+TN/j6aWgVZnO86Ra+J1BMtA4A7WNswHWnbyBVDbd9A7EaPausA== X-Received: by 2002:a92:c7d1:0:b0:357:47a3:adb8 with SMTP id g17-20020a92c7d1000000b0035747a3adb8mr9967408ilk.29.1697237329218; Fri, 13 Oct 2023 15:48:49 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:48 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 16/25] dyndbg: refactor ddebug_classparam_clamp_input Date: Fri, 13 Oct 2023 16:48:08 -0600 Message-ID: <20231013224818.3456409-17-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Extract input validation code, from param_set_dyndbg_module_classes() (the sys-node >handler) to new: ddebug_classparam_clamp_input(kp), call it from former. It takes kernel-param arg, so it can complain about "foo: bad input". Reuse ddparam_clamp_input(kp) in ddebug_sync_classbits(), to validate inputs from parent's params, just like our own. To support that reuse, alter ddebug_sync_classbits() and caller to pass kp instead of kp->arg. Signed-off-by: Jim Cromie --- lib/dynamic_debug.c | 70 ++++++++++++++++++++++++++++++--------------- 1 file changed, 47 insertions(+), 23 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index c11feca70d6f..17eefb35ac96 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -656,6 +656,30 @@ static int ddebug_apply_class_bitmap(const struct ddebug_class_param *dcp, #define CLASSMAP_BITMASK(width) ((1UL << (width)) - 1) +static void ddebug_class_param_clamp_input(unsigned long *inrep, const struct kernel_param *kp) +{ + const struct ddebug_class_param *dcp = kp->arg; + const struct ddebug_class_map *map = dcp->map; + + switch (map->map_type) { + case DD_CLASS_TYPE_DISJOINT_BITS: + /* expect bits. mask and warn if too many */ + if (*inrep & ~CLASSMAP_BITMASK(map->length)) { + pr_warn("%s: input: 0x%lx exceeds mask: 0x%lx, masking\n", + KP_NAME(kp), *inrep, CLASSMAP_BITMASK(map->length)); + *inrep &= CLASSMAP_BITMASK(map->length); + } + break; + case DD_CLASS_TYPE_LEVEL_NUM: + /* input is bitpos, of highest verbosity to be enabled */ + if (*inrep > map->length) { + pr_warn("%s: level:%ld exceeds max:%d, clamping\n", + KP_NAME(kp), *inrep, map->length); + *inrep = map->length; + } + break; + } +} static int param_set_dyndbg_module_classes(const char *instr, const struct kernel_param *kp, const char *modnm) @@ -674,26 +698,15 @@ static int param_set_dyndbg_module_classes(const char *instr, pr_err("expecting numeric input, not: %s > %s\n", instr, KP_NAME(kp)); return -EINVAL; } + ddebug_class_param_clamp_input(&inrep, kp); switch (map->map_type) { case DD_CLASS_TYPE_DISJOINT_BITS: - /* expect bits. mask and warn if too many */ - if (inrep & ~CLASSMAP_BITMASK(map->length)) { - pr_warn("%s: input: 0x%lx exceeds mask: 0x%lx, masking\n", - KP_NAME(kp), inrep, CLASSMAP_BITMASK(map->length)); - inrep &= CLASSMAP_BITMASK(map->length); - } v2pr_info("bits:0x%lx > %s.%s\n", inrep, modnm ?: "*", KP_NAME(kp)); totct += ddebug_apply_class_bitmap(dcp, &inrep, *dcp->bits, modnm); *dcp->bits = inrep; break; case DD_CLASS_TYPE_LEVEL_NUM: - /* input is bitpos, of highest verbosity to be enabled */ - if (inrep > map->length) { - pr_warn("%s: level:%ld exceeds max:%d, clamping\n", - KP_NAME(kp), inrep, map->length); - inrep = map->length; - } old_bits = CLASSMAP_BITMASK(*dcp->lvl); new_bits = CLASSMAP_BITMASK(inrep); v2pr_info("lvl:%ld bits:0x%lx > %s\n", inrep, new_bits, KP_NAME(kp)); @@ -1160,16 +1173,27 @@ static const char * const ddebug_classmap_typenames[] = { ddebug_classmap_typenames[_cm->map_type]); \ }) -static void ddebug_sync_classbits(const struct ddebug_class_param *dcp, const char *modname) +static void ddebug_sync_classbits(const struct kernel_param *kp, const char *modname) { - /* clamp initial bitvec, mask off hi-bits */ - if (*dcp->bits & ~CLASSMAP_BITMASK(dcp->map->length)) { - *dcp->bits &= CLASSMAP_BITMASK(dcp->map->length); - v2pr_info("preset classbits: %lx\n", *dcp->bits); + struct ddebug_class_param *dcp = kp->arg; + unsigned long new_bits; + + ddebug_class_param_clamp_input(dcp->bits, kp); + + switch (dcp->map->map_type) { + case DD_CLASS_TYPE_DISJOINT_BITS: + v2pr_info(" %s: classbits: 0x%lx\n", KP_NAME(kp), *dcp->bits); + ddebug_apply_class_bitmap(dcp, dcp->bits, 0UL, modname); + break; + case DD_CLASS_TYPE_LEVEL_NUM: + new_bits = CLASSMAP_BITMASK(*dcp->lvl); + v2pr_info(" %s: lvl:%ld bits:0x%lx\n", KP_NAME(kp), *dcp->lvl, new_bits); + ddebug_apply_class_bitmap(dcp, &new_bits, 0UL, modname); + break; + default: + pr_err("bad map type %d\n", dcp->map->map_type); + return; } - /* force class'd prdbgs (in USEr module) to match (DEFINEr module) class-param */ - ddebug_apply_class_bitmap(dcp, dcp->bits, ~0, modname); - ddebug_apply_class_bitmap(dcp, dcp->bits, 0, modname); } static void ddebug_match_apply_kparam(const struct kernel_param *kp, @@ -1184,9 +1208,9 @@ static void ddebug_match_apply_kparam(const struct kernel_param *kp, dcp = (struct ddebug_class_param *)kp->arg; if (map == dcp->map) { - v2pr_info("found kp:%s =0x%lx", kp->name, *dcp->bits); - vpr_cm_info(map, "mapped to:"); - ddebug_sync_classbits(dcp, modnm); + v2pr_info(" found kp:%s =0x%lx", kp->name, *dcp->bits); + vpr_cm_info(map, " mapped to:"); + ddebug_sync_classbits(kp, modnm); } } From patchwork Fri Oct 13 22:48:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421856 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C9A9CDB484 for ; Fri, 13 Oct 2023 22:49:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7B7A910E670; Fri, 13 Oct 2023 22:48:58 +0000 (UTC) Received: from mail-il1-x12f.google.com (mail-il1-x12f.google.com [IPv6:2607:f8b0:4864:20::12f]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5FB6510E67B; Fri, 13 Oct 2023 22:48:51 +0000 (UTC) Received: by mail-il1-x12f.google.com with SMTP id e9e14a558f8ab-3574cde48b4so9415265ab.1; Fri, 13 Oct 2023 15:48:51 -0700 (PDT) DKIM-Signature: v=1; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:50 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 17/25] dyndbg-API: promote DYNDBG_CLASSMAP_PARAM to API Date: Fri, 13 Oct 2023 16:48:09 -0600 Message-ID: <20231013224818.3456409-18-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" move the DYNDBG_CLASSMAP_PARAM macro from test-dynamic-debug.c into the header, and refine it, by distinguishing the 2 use cases: 1.DYNDBG_CLASSMAP_PARAM_REF for DRM, to pass in extern __drm_debug by name. dyndbg keeps bits in it, so drm can still use it as before 2.DYNDBG_CLASSMAP_PARAM new user (test_dynamic_debug) doesn't need to share state, decls a static long unsigned int to store the bitvec. __DYNDBG_CLASSMAP_PARAM bottom layer - allocate,init a ddebug-class-param, module-param-cb. Also clean up and improve comments in test-code, and add MODULE_DESCRIPTIONs. Signed-off-by: Jim Cromie --- --- drivers/gpu/drm/drm_print.c | 8 ++--- include/drm/drm_print.h | 6 ++-- include/linux/dynamic_debug.h | 37 +++++++++++++++++++++- lib/test_dynamic_debug.c | 56 +++++++++++---------------------- lib/test_dynamic_debug_submod.c | 9 +++++- 5 files changed, 69 insertions(+), 47 deletions(-) diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index dabcfa0dd279..8f4b609353a5 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -69,12 +69,8 @@ DRM_CLASSMAP_DEFINE(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, "DRM_UT_DP", "DRM_UT_DRMRES"); -static struct ddebug_class_param drm_debug_bitmap = { - .bits = &__drm_debug, - .flags = "p", - .map = &drm_debug_classes, -}; -module_param_cb(debug, ¶m_ops_dyndbg_classes, &drm_debug_bitmap, 0600); +DRM_CLASSMAP_PARAM_REF(debug, __drm_debug, drm_debug_classes, p); + #endif void __drm_puts_coredump(struct drm_printer *p, const char *str) diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index 706afc97c79c..94d4f5500030 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -322,11 +322,13 @@ enum drm_debug_category { }; #ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG -#define DRM_CLASSMAP_DEFINE(...) DYNDBG_CLASSMAP_DEFINE(__VA_ARGS__) -#define DRM_CLASSMAP_USE(name) DYNDBG_CLASSMAP_USE(name) +#define DRM_CLASSMAP_DEFINE(...) DYNDBG_CLASSMAP_DEFINE(__VA_ARGS__) +#define DRM_CLASSMAP_USE(name) DYNDBG_CLASSMAP_USE(name) +#define DRM_CLASSMAP_PARAM_REF(...) DYNDBG_CLASSMAP_PARAM_REF(__VA_ARGS__) #else #define DRM_CLASSMAP_DEFINE(...) #define DRM_CLASSMAP_USE(name) +#define DRM_CLASSMAP_PARAM_REF(...) #endif static inline bool drm_debug_enabled_raw(enum drm_debug_category category) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 1b027be2cdc4..f182f95caabb 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -91,7 +91,7 @@ struct ddebug_class_map { * used to validate a "class FOO .." >control command on the module */ #define DYNDBG_CLASSMAP_DEFINE(_var, _maptype, _base, ...) \ - const char *_var##_classnames[] = { __VA_ARGS__ }; \ + static const char *_var##_classnames[] = { __VA_ARGS__ }; \ struct ddebug_class_map __aligned(8) __used \ __section("__dyndbg_classes") _var = { \ .mod = THIS_MODULE, \ @@ -145,6 +145,41 @@ struct ddebug_class_param { const struct ddebug_class_map *map; }; +/** + * DYNDBG_CLASSMAP_PARAM - wrap a dyndbg-classmap with a controlling sys-param + * @_name sysfs node name + * @_var name of the struct classmap var defining the controlled classes + * @_flags flags to be toggled, typically just 'p' + * + * Creates a sysfs-param to control the classes defined by the + * classmap. Keeps bits in a private/static + */ +#define DYNDBG_CLASSMAP_PARAM(_name, _var, _flags) \ + static unsigned long _name##_bvec; \ + __DYNDBG_CLASSMAP_PARAM(_name, _name##_bvec, _var, _flags) + +/** + * DYNDBG_CLASSMAP_PARAM_REF - wrap a dyndbg-classmap with a controlling sys-param + * @_name sysfs node name + * @_bits name of the module's unsigned long bit-vector, ex: __drm_debug + * @_var name of the struct classmap var defining the controlled classes + * @_flags flags to be toggled, typically just 'p' + * + * Creates a sysfs-param to control the classmap, keeping bitvec in user @_bits. + * This lets drm use __drm_debug elsewhere too. + */ +#define DYNDBG_CLASSMAP_PARAM_REF(_name, _bits, _var, _flags) \ + __DYNDBG_CLASSMAP_PARAM(_name, _bits, _var, _flags) + +#define __DYNDBG_CLASSMAP_PARAM(_name, _bits, _var, _flags) \ + static struct ddebug_class_param _name##_##_flags = { \ + .bits = &(_bits), \ + .flags = #_flags, \ + .map = &(_var), \ + }; \ + module_param_cb(_name, ¶m_ops_dyndbg_classes, \ + &_name##_##_flags, 0600) + /* * pr_debug() and friends are globally enabled or modules have selectively * enabled them. diff --git a/lib/test_dynamic_debug.c b/lib/test_dynamic_debug.c index 23967071b60f..b3c6f90b9fe8 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Kernel module for testing dynamic_debug + * Kernel module to test/demonstrate dynamic_debug features, + * particularly classmaps and their support for subsystems like DRM. * * Authors: * Jim Cromie @@ -35,24 +36,8 @@ module_param_cb(do_prints, ¶m_ops_do_prints, NULL, 0600); #define CLASSMAP_BITMASK(width, base) (((1UL << (width)) - 1) << base) -/* sysfs param wrapper, proto-API */ -#define DYNDBG_CLASSMAP_PARAM_(_model, _flags, _init) \ - static unsigned long bits_##_model = _init; \ - static struct ddebug_class_param _flags##_##_model = { \ - .bits = &bits_##_model, \ - .flags = #_flags, \ - .map = &map_##_model, \ - }; \ - module_param_cb(_flags##_##_model, ¶m_ops_dyndbg_classes, \ - &_flags##_##_model, 0600) -#ifdef DEBUG -#define DYNDBG_CLASSMAP_PARAM(_model, _flags) DYNDBG_CLASSMAP_PARAM_(_model, _flags, ~0) -#else -#define DYNDBG_CLASSMAP_PARAM(_model, _flags) DYNDBG_CLASSMAP_PARAM_(_model, _flags, 0) -#endif - /* - * Demonstrate/test all 4 class-typed classmaps with a sys-param. + * Demonstrate/test both types of classmaps, each with a sys-param. * * Each is 3 part: client-enum decl, _DEFINE, _PARAM. * Declare them in blocks to show patterns of use (repetitions and @@ -64,7 +49,7 @@ module_param_cb(do_prints, ¶m_ops_do_prints, NULL, 0600); * Modules with multiple CLASSMAPS must have enums with distinct * value-ranges, arranged below with explicit enum_sym = X inits. * - * Declare all 4 enums now, for different types + * Declare all enums now, for different types */ /* numeric input, independent bits */ @@ -83,18 +68,15 @@ enum cat_disjoint_bits { /* numeric verbosity, V2 > V1 related */ enum cat_level_num { V0 = 14, V1, V2, V3, V4, V5, V6, V7 }; -/* named-symbolic input, independent bits */ -enum cat_disjoint_names { LOW = 10, MID, HI }; - -/* named-symbolic verbosity */ -enum cat_level_names { L0 = 22, L1, L2, L3, L4, L5, L6, L7 }; - -/* recapitulate DRM's parent(drm.ko) <-- _submod(drivers,helpers) */ +/* + * use/demonstrate multi-module-group classmaps, as for DRM + */ #if !defined(TEST_DYNAMIC_DEBUG_SUBMOD) /* - * In single user, or parent / coordinator (drm.ko) modules, define - * classmaps on the client enums above, and then declares the PARAMS - * ref'g the classmaps. Each is exported. + * For module-groups of 1+, define classmaps with names (stringified + * enum-symbols) copied from above. 1-to-1 mapping is recommended. + * The classmap is exported, so that other modules in the group can + * link to it and control their prdbgs. */ DYNDBG_CLASSMAP_DEFINE(map_disjoint_bits, DD_CLASS_TYPE_DISJOINT_BITS, D2_CORE, @@ -113,19 +95,18 @@ DYNDBG_CLASSMAP_DEFINE(map_level_num, DD_CLASS_TYPE_LEVEL_NUM, V0, "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7"); /* - * now add the sysfs-params + * for use-cases that want it, provide a sysfs-param to set the + * classes in the classmap. It is at this interface where the + * "v3>v2" property is applied to DD_CLASS_TYPE_LEVEL_NUM inputs. */ - -DYNDBG_CLASSMAP_PARAM(disjoint_bits, p); -DYNDBG_CLASSMAP_PARAM(level_num, p); +DYNDBG_CLASSMAP_PARAM(p_disjoint_bits, map_disjoint_bits, p); +DYNDBG_CLASSMAP_PARAM(p_level_num, map_level_num, p); #else /* TEST_DYNAMIC_DEBUG_SUBMOD */ - /* - * in submod/drm-drivers, use the classmaps defined in top/parent - * module above. + * the +1 members of a multi-module group refer to the classmap + * DEFINEd (and exported) above. */ - DYNDBG_CLASSMAP_USE(map_disjoint_bits); DYNDBG_CLASSMAP_USE(map_level_num); @@ -186,5 +167,6 @@ static void __exit test_dynamic_debug_exit(void) module_init(test_dynamic_debug_init); module_exit(test_dynamic_debug_exit); +MODULE_DESCRIPTION("test/demonstrate dynamic-debug features"); MODULE_AUTHOR("Jim Cromie "); MODULE_LICENSE("GPL"); diff --git a/lib/test_dynamic_debug_submod.c b/lib/test_dynamic_debug_submod.c index 9a893402ce1a..0d15f3ffe466 100644 --- a/lib/test_dynamic_debug_submod.c +++ b/lib/test_dynamic_debug_submod.c @@ -1,6 +1,9 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Kernel module for testing dynamic_debug + * Kernel module to test/demonstrate dynamic_debug features, + * particularly classmaps and their support for subsystems, like DRM, + * which defines its drm_debug classmap in drm module, and uses it in + * helpers & drivers. * * Authors: * Jim Cromie @@ -8,3 +11,7 @@ #define TEST_DYNAMIC_DEBUG_SUBMOD #include "test_dynamic_debug.c" + +MODULE_DESCRIPTION("test/demonstrate dynamic-debug subsystem support"); +MODULE_AUTHOR("Jim Cromie "); +MODULE_LICENSE("GPL"); From patchwork Fri Oct 13 22:48:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421857 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E71B5CDB489 for ; Fri, 13 Oct 2023 22:49:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BD96610E65E; Fri, 13 Oct 2023 22:49:00 +0000 (UTC) Received: from mail-il1-x12f.google.com (mail-il1-x12f.google.com [IPv6:2607:f8b0:4864:20::12f]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8F4F510E67B; Fri, 13 Oct 2023 22:48:52 +0000 (UTC) Received: by mail-il1-x12f.google.com with SMTP id e9e14a558f8ab-3512efed950so9927265ab.2; Fri, 13 Oct 2023 15:48:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237332; x=1697842132; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Xt5GYS9mXBsgXWCKjkvZOfiO8j43yK6Z0bFknFJi+ls=; b=QpNd1UDX2oHF5jBE43mEFmPBNnYQxAuITgVTwd1BlP+ZCDAgSnyyMC9vl7nHqTXW0u JnIQegLpDslkuFozQsAZNV6TwdrGbnVgBu0kknL3q8dwH2cAYfJHe2EdYy5KaGX+cryY nrrQNoV3Rx6UEXouL7qjlabqcq9SPjeII1JzdL7INCHXMuEzR+iSSxFV0y/pRn5AnGtY hNgTuG+LEOfqD6bO9JZWrfRvJ8Cs7vMLxKIzfUb7OT/eB/f4fnMk3GeV2CbWzUCs8VEi c1Pof2YFptDqOoVod7UxKfNfL+wLCTq7h31Pem+E0jfCquKbmITPZ3VYVf2ifL9E5rhA nWFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237332; x=1697842132; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Xt5GYS9mXBsgXWCKjkvZOfiO8j43yK6Z0bFknFJi+ls=; b=mmMoSUw6ZsOYaafIEBPWK4hhM9uOOr4/6Mn9n0qA2kOwXByQWL1xQDtCMHJmI6UjRI 6bSYLJ3aIGk0EMW8ZYVYMyv1mc2aNa4WLR5OZHC8m7DlNnJ/KKCnPKr+/7/ySxM7v9RQ jDvqlFbP9k8+FN7LuAYRydJxj2xUyvZQ+irBm8ns4CNDJvPNhQgv3EAiEyfb5aMvUCmz Js0GrY2v0Hno9zXMyGcqdf82+fv6unrywTB+KDc4CBFCwtNZn+ej2/1M2OTadnle2F1P nuxRd3MRLrfylX49OVSKQwjggSixG8lJJ0JnQ6ipLNHzZIToCBAO6J+64I9J1cVJk8gy IqgQ== X-Gm-Message-State: AOJu0Yy0WhbnPvcH4FKhRBzTXbhyBY2dsU58Jh1eO8PW8pvwFZxqfxQk 5HlVZmmO3NR3pXXsIEvTkU4= X-Google-Smtp-Source: AGHT+IGqQ1iwV3rhmpHdu75VZNFfcZihQtqNSLpY33tZ2e3fX8O3LgvYIt+m1LEyZYRdn0zTAq8rIA== X-Received: by 2002:a92:cdac:0:b0:357:4a69:60d8 with SMTP id g12-20020a92cdac000000b003574a6960d8mr10470030ild.4.1697237331792; Fri, 13 Oct 2023 15:48:51 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:51 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 18/25] dyndbg-doc: add classmap info to howto Date: Fri, 13 Oct 2023 16:48:10 -0600 Message-ID: <20231013224818.3456409-19-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add some basic info on classmap usage and api cc: linux-doc@vger.kernel.org Signed-off-by: Jim Cromie --- v5- adjustments per Randy Dunlap, me v7b- checkpatch fixes --- .../admin-guide/dynamic-debug-howto.rst | 60 ++++++++++++++++++- 1 file changed, 59 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst index 0b3d39c610d9..028c2cb5b4c5 100644 --- a/Documentation/admin-guide/dynamic-debug-howto.rst +++ b/Documentation/admin-guide/dynamic-debug-howto.rst @@ -225,7 +225,6 @@ the ``p`` flag has meaning, other flags are ignored. Note the regexp ``^[-+=][fslmpt_]+$`` matches a flags specification. To clear all flags at once, use ``=_`` or ``-fslmpt``. - Debug messages during Boot Process ================================== @@ -375,3 +374,62 @@ just a shortcut for ``print_hex_dump(KERN_DEBUG)``. For ``print_hex_dump_debug()``/``print_hex_dump_bytes()``, format string is its ``prefix_str`` argument, if it is constant string; or ``hexdump`` in case ``prefix_str`` is built dynamically. + +Dynamic Debug classmaps +======================= + +Dyndbg allows selection/grouping of *prdbg* callsites using structural +info: module, file, function, line. Classmaps allow authors to add +their own domain-oriented groupings using class-names. Classmaps are +exported, so they referencable from other modules. + + # enable classes individually + :#> ddcmd class DRM_UT_CORE +p + :#> ddcmd class DRM_UT_KMS +p + # or more selectively + :#> ddcmd class DRM_UT_CORE module drm +p + +The "class FOO" syntax protects class'd prdbgs from generic overwrite:: + + # IOW this doesn't wipe any DRM.debug settings + :#> ddcmd -p + +To support the DRM.debug parameter, DYNDBG_CLASSMAP_PARAM* updates all +classes in a classmap, mapping param-bits 0..N onto the classes: +DRM_UT_<*> for the DRM use-case. + +Dynamic Debug Classmap API +========================== + +DYNDBG_CLASSMAP_DEFINE - modules use this to create classmaps, naming +each of the classes (stringified enum-symbols: "DRM_UT_<*>"), and +type, and mapping the class-names to consecutive _class_ids. + +By doing so, modules tell dyndbg that they are have prdbgs with those +class_ids, and they authorize dyndbg to accept "class FOO" for the +module defining that classname. + +There are 2 types of classmaps: + + DD_CLASS_TYPE_DISJOINT_BITS: classes are independent, like DRM.debug + DD_CLASS_TYPE_LEVEL_NUM: classes are relative, ordered (V3 > V2) + +DYNDBG_CLASSMAP_PARAM - refers to a DEFINEd classmap, exposing the set +of defined classes to manipulation as a group. This interface +enforces the relatedness of classes of DD_CLASS_TYPE_LEVEL_NUM typed +classmaps; all classes are independent in the >control parser itself. + +DYNDBG_CLASSMAP_USE - drm drivers invoke this to ref the CLASSMAP that +drm DEFINEs. This shares the classmap definition, and authorizes +dyndbg to apply changes to the user module's class'd pr_debugs. It +also tells dyndbg how to initialize the user's prdbgs at modprobe, +based upon the current setting of the parent's controlling param. + +Modules or module-groups (drm & drivers) can define multiple +classmaps, as long as they share the limited 0..62 per-module-group +_class_id range, without overlap. + +``#define DEBUG`` will enable all pr_debugs in scope, including any +class'd ones. This won't be reflected in the PARAM readback value, +but the pr_debug callsites can be toggled into agreement with the +param. From patchwork Fri Oct 13 22:48:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421858 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3806CCDB486 for ; Fri, 13 Oct 2023 22:49:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 24D9310E693; Fri, 13 Oct 2023 22:49:04 +0000 (UTC) Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3E58210E64F; Fri, 13 Oct 2023 22:48:54 +0000 (UTC) Received: by mail-il1-x129.google.com with SMTP id e9e14a558f8ab-3513b5a9e8eso9842105ab.0; Fri, 13 Oct 2023 15:48:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237333; x=1697842133; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wnBLKUk9O3xETUCsilAg0vyOCJCY1VGcTM3FhTYpKWY=; b=nOvUv8c2RttakGxsbXqNkdT+6P5SgKH4+hF/hC1CI8ZexKOai+DTB2xpudNpusrb8x LGcFf2xjrvQ2u2V754sIldhtF7Z0rCVZaa7KYn10PYNxjIk34YN77SxwoVawteBTBD5T Bo8UWpfjBpbXMzaJ58kLOD8Wbjzl+sXMq9yz7YoZOr021evT0LOZnfETwUSKPeMbTknY M05gmdcmOp1qGzI94TgB/h1dM7H1WW/9sv1q+OXJSdTlv/XTEBN/KkfJxl02IOaLEg5h hirKotWZfRDyU4I4y1ivUdulSfd9Nt4TxnfPaC3B1VGvokyXJ8Ho6nD6BCIQVPF0AOAo jvzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237333; x=1697842133; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wnBLKUk9O3xETUCsilAg0vyOCJCY1VGcTM3FhTYpKWY=; b=QHYuhLUkFCG/iENftY9xNi7jguBBzedmk7IuhVdL+P5/BildHo3J57qAxGZc3cnVTg 6v8pKOKJTMZUkcub77A7e4/oqeUWEFO3eN6GuBFMKcyNZvLshNTgcqjVEB+4t8o5hQ7W HawewKfPeKmVBAwE9DOPcPS6N+e8QfhkXdLI4A4rkbFBorhHh0d5QMPMGibWscLpUVYD zQKZWv4IzMleUDvNxZ7StLC58hsnDX4lPacwnRXrjcXQmTYDj8QWasWlS2jhOmiNanPG nl3HQ1sMIz0cCWtcW0y/80kD9Z+iRSrk/X11k8e4LFvlrUJ5OeVZVEC2NzqhXvh+E9IL oCvQ== X-Gm-Message-State: AOJu0YxVnNyFtLFpfkV9qQBsAWwS7ZUZC99obCUtYMLpK66DyF5OkVPG Qhmn/ix6c9WXHI5X5uPaFM8= X-Google-Smtp-Source: AGHT+IHJBnSInwEpEahOM99jH0rsVnEtmw1JeshrZau0+PNtsF/3sESjxbLknd+gDdbfHObZb+ARmg== X-Received: by 2002:a92:da83:0:b0:357:6e14:835f with SMTP id u3-20020a92da83000000b003576e14835fmr1403410iln.15.1697237333447; Fri, 13 Oct 2023 15:48:53 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:52 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 19/25] dyndbg: reserve flag bit _DPRINTK_FLAGS_PREFIX_CACHED Date: Fri, 13 Oct 2023 16:48:11 -0600 Message-ID: <20231013224818.3456409-20-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Reserve bit 7 to remember that a pr-debug callsite is/was: - enabled, with +p - wants a dynamic-prefix, with one+ of module:function:sourcfile - was previously called - was thus saved in the cache. NOT YET. Its unclear whether any cache fetch would be faster than 2-3 field fetches, but theres another factor; the 3 columns in the __dyndbg section are highly redundant and compressible, but to get the compression, we need field accessors, which will rebalance the tradeoff. So, for now, its just the bit reservation. Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index f182f95caabb..927cb14f24e0 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -38,6 +38,7 @@ struct _ddebug { #define _DPRINTK_FLAGS_INCL_LINENO (1<<3) #define _DPRINTK_FLAGS_INCL_TID (1<<4) #define _DPRINTK_FLAGS_INCL_SOURCENAME (1<<5) +#define _DPRINTK_FLAGS_PREFIX_CACHED (1<<7) #define _DPRINTK_FLAGS_INCL_ANY \ (_DPRINTK_FLAGS_INCL_MODNAME | _DPRINTK_FLAGS_INCL_FUNCNAME |\ From patchwork Fri Oct 13 22:48:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421864 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9E135CDB484 for ; Fri, 13 Oct 2023 22:49:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9477310E656; Fri, 13 Oct 2023 22:49:12 +0000 (UTC) Received: from mail-il1-x130.google.com (mail-il1-x130.google.com [IPv6:2607:f8b0:4864:20::130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5A63810E64F; Fri, 13 Oct 2023 22:48:55 +0000 (UTC) Received: by mail-il1-x130.google.com with SMTP id e9e14a558f8ab-3574cde48b4so9415405ab.1; Fri, 13 Oct 2023 15:48:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237334; x=1697842134; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=PdhZKvxYwXdkWkdLVl73JQfyJJ5FbxfJO6rydQUwjqs=; b=LGT08OlobyPIr8RlOZyOPuMa5gK1RaH3/o98EdFvT3owMsyaaA1zBXbfK2q0k3uD2y GXyjrYonyDXLaizt18aJ5YteSYiI1HkFUWW0HcWbXQTHhyLZOgUbRNaVpsQF3uLngMyE 9IjoeHvxET3W5fxDbctpEVhavo6c5Icf56y+fKNaO81pDrjMg3AKn1vIJ7ua2hqI+7Gp pOttuAN4cRe8F5lqxnoM68Fcvm0yoRiJQWAtjPpv14r4iSi04FYutFBvNPp5e7ZaEJqS bqrbKsjn/pKELsntVDuU/bvII1pidxAOeRJ0Sn0g9lX+UzR4q9QV/ixTjdNuFe/lrJwU Rvmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237334; x=1697842134; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PdhZKvxYwXdkWkdLVl73JQfyJJ5FbxfJO6rydQUwjqs=; b=E24UHDNMqkvb7kb31W1pAUFSQo7mKzfrsK7LqnHRaVxt9YTFNgZKt78szNVzxcxrxD yzrZgV1AiLSj8O754kHzge7woe9dE6Y6NAy/PUBrGzdH9flRvSzxSKJKTc4mgDDO+CK3 2WwfbNsyxT/UibMOJehrk/P1JezVUT9Rkrs7NNJc+g/lI9Nm1UnQLYcQHv7usriuMZiX bBjyF1z1K0JAO+r7Mk0rtEyfBDZMQKM+lfpL7c4Ka5+//LMEuytVkGyu/+M7Gy3+JM2p RVU1NVQ4KdfR9C6Fy4a1u4lE02wL1wJXZ/QTRRGB2kLqqNqRFtocYWbMT+8VUB8MgcuK oAEg== X-Gm-Message-State: AOJu0YxW/ehHyEklqBSWOu1qwEgsXayq3vIKDrV8zZjSG+PuPXORyF// ghZL2JlrxWOFZQLtDWQiNTlvF5fWKn4X0Q== X-Google-Smtp-Source: AGHT+IF3D17mL6y2d13cwyIjmP3+07yGtwbO19SBlnOyYbqXK1NWwD4Cm7hxH5ll2GZm/mnKj3kEZg== X-Received: by 2002:a05:6e02:1c28:b0:34b:ba9f:679c with SMTP id m8-20020a056e021c2800b0034bba9f679cmr37397493ilh.16.1697237334576; Fri, 13 Oct 2023 15:48:54 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:54 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 20/25] dyndbg: add _DPRINTK_FLAGS_INCL_LOOKUP Date: Fri, 13 Oct 2023 16:48:12 -0600 Message-ID: <20231013224818.3456409-21-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" dyndbg's dynamic prefixing (by +tmfsl flags) is needlessly expensive. When an enabled (with +p) pr_debug is called, _DPRINTK_FLAGS_INCL_ANY prefix decorations are sprintf'd into stack-mem for every call. This string (or part of it) could be cached once its 1st generated, and retrieved thereafter, as long as its deleted any time the callsite's flags are changed afterwards. So consider the prefix/decoration flags: 'tmfsl', and what should be in the cache: -t thread-id. not part of the "callsite" info, derived from current. doesn't belong in the cache. it would be wrong. can be done in outer: dynamic_emit_prefix() -l line number this could be part of the prefix, but would bloat the cache can also be done in outer: dynamic_emit_prefix() -mfs module, function, source-file we cache these, composed into a sub-string. they are "lookups", currently to descriptor fields, could be accessor macros to "compressed" tables. cache saves more access work. All enabled together, they compose a prefix string like: # outer -----inner---------- outer "[tid] module:function:sourcfile:line: " So this patch extracts _DPRINTK_FLAGS_INCL_LOOKUP macro out of _DPRINTK_FLAGS_INCL_ANY macro, then redefs latter. Next re-refactor dynamic_emit_prefix inner/outer fns accordingly. Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 927cb14f24e0..2237d454bc19 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -40,10 +40,12 @@ struct _ddebug { #define _DPRINTK_FLAGS_INCL_SOURCENAME (1<<5) #define _DPRINTK_FLAGS_PREFIX_CACHED (1<<7) -#define _DPRINTK_FLAGS_INCL_ANY \ - (_DPRINTK_FLAGS_INCL_MODNAME | _DPRINTK_FLAGS_INCL_FUNCNAME |\ - _DPRINTK_FLAGS_INCL_LINENO | _DPRINTK_FLAGS_INCL_TID |\ +#define _DPRINTK_FLAGS_INCL_LOOKUP \ + (_DPRINTK_FLAGS_INCL_MODNAME | _DPRINTK_FLAGS_INCL_FUNCNAME | \ _DPRINTK_FLAGS_INCL_SOURCENAME) +#define _DPRINTK_FLAGS_INCL_ANY \ + (_DPRINTK_FLAGS_INCL_LINENO | _DPRINTK_FLAGS_INCL_TID | \ + _DPRINTK_FLAGS_INCL_LOOKUP) #if defined DEBUG #define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT From patchwork Fri Oct 13 22:48:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421863 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AA89ECDB47E for ; Fri, 13 Oct 2023 22:49:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EEAC310E6AE; Fri, 13 Oct 2023 22:49:10 +0000 (UTC) Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) by gabe.freedesktop.org (Postfix) with ESMTPS id 80E9B10E686; Fri, 13 Oct 2023 22:48:56 +0000 (UTC) Received: by mail-io1-xd2c.google.com with SMTP id ca18e2360f4ac-79fe612beabso104543739f.3; Fri, 13 Oct 2023 15:48:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237336; x=1697842136; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=F7BOhkrkHITitY1j/kRDjansJLSo7hGc2Ealdbve1QE=; b=bvULCDgAN3C5AoMRB9TQmuZR9iaJHTOPJwZaSt41I6KAPVChGpFuZsPVPn8BRFwNgT 8mNhgGSi0ptIuEY4e0z0v+wm5BLOYyyq8iURHaYRtsxetU0jx6UeN15e2NT/otEoYzJu 5vv41EhlUin13O//qDfKmxrfhrzvhZFN/KrhKiBYGH8Ha/1KbRO2BE7ASdNRmecBJz2k LDW3mGUjmHQG++bIWaPiuoBXVue70Vh9py6Ru3nVJ4wlHJqYlyaLBePyUcR6/Vs5j4Mc YOxDrHiNemrMjrwGeoGguFmPtyoVPY34+7QPoBNkLXvKldGDmcYb62Gqc3Hz9eomadaO pt2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237336; x=1697842136; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=F7BOhkrkHITitY1j/kRDjansJLSo7hGc2Ealdbve1QE=; b=hzYjcsG6fhuu9PZKearn7HXDX8Qc3Sj0iVIjLkRzGRj5oVA/9+wP1CVth7QvIILVK7 GWEcinGKLXuedgvy246oFoDKVAatkFk33RNFhyULxjudbfIwOYs7co9naxbB7V3cqrZV TCmOD12/H6rl+5k/eYr7IvChTP6Y0MVQpkK9ob/rqmwbjkKRpdw/Kt8J8zduRc2cj25d 3T56pQA645JPw92sLGLq0zi2mvEb998lFBaqdgAiZ3JgzcSC+aE5lU/EGh05iow0UoEk EdKW639CLVrWU1WLiUIt0ANueSdRDi11cm27fwpE4MVAfBi6b2ILJqL4pJLzI2vNB0VL n4GQ== X-Gm-Message-State: AOJu0YwGRbKwsojZ3YGx7tG1bRmzTMAz8bMr9ZSEqpRrO4Ii61gZcqSs jdw2IJrEgxIyIhYUBFvMOs0= X-Google-Smtp-Source: AGHT+IHV+1dejqWmVluHB1YabEHlzoSNnK4D52lGGpz4zveUJlfgzCoJ9RoCMzdJ/fWCyvcjW3aAIA== X-Received: by 2002:a92:c56e:0:b0:351:50f1:1f98 with SMTP id b14-20020a92c56e000000b0035150f11f98mr31025480ilj.32.1697237335751; Fri, 13 Oct 2023 15:48:55 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:55 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 21/25] dyndbg: refactor *dynamic_emit_prefix Date: Fri, 13 Oct 2023 16:48:13 -0600 Message-ID: <20231013224818.3456409-22-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Refactor the split of duties between outer & inner fns. The outer fn was previously just an inline unlikely forward to inner, which did all the work. Now, outer handles +t and +l flags itself, and calls inner only when _DPRINTK_FLAGS_INCL_LOOKUP is needed. No functional change. But it does make the results of the inner-fn more cache-friendly (fewer entries, reused more often): 1- no spurious [TID] or noise 2- no LINE-number to bloat the cache (avg 9 pr_debugs/fn) 3- only LOOKUP stuff Currently LOOKUPs are descriptor-field refs but could be replaced by accessor functions. This would allow the __dyndbg_sites section to be de-duplicated and reclaimed; currently module, filename fields are ~90% repeated. As the accessors get more expensive, the value of caching part of the prefix goes up. Also change inner-fn to return count of extra chars written to the buffer, and drop "inline" from outer, let the compiler decide. Maybe also change name accordingly. Signed-off-by: Jim Cromie --- fixup whitespace --- lib/dynamic_debug.c | 39 ++++++++++++++++++++++----------------- 1 file changed, 22 insertions(+), 17 deletions(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 17eefb35ac96..5825b58043a6 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -777,11 +777,28 @@ static int remaining(int wrote) return 0; } -static char *__dynamic_emit_prefix(const struct _ddebug *desc, char *buf) +static int __dynamic_emit_prefix(const struct _ddebug *desc, char *buf, int pos) +{ + if (desc->flags & _DPRINTK_FLAGS_INCL_MODNAME) + pos += snprintf(buf + pos, remaining(pos), "%s:", + desc->modname); + if (desc->flags & _DPRINTK_FLAGS_INCL_FUNCNAME) + pos += snprintf(buf + pos, remaining(pos), "%s:", + desc->function); + if (desc->flags & _DPRINTK_FLAGS_INCL_SOURCENAME) + pos += snprintf(buf + pos, remaining(pos), "%s:", + trim_prefix(desc->filename)); + return pos; +} + +static char *dynamic_emit_prefix(struct _ddebug *desc, char *buf) { int pos_after_tid; int pos = 0; + if (likely(!(desc->flags & _DPRINTK_FLAGS_INCL_ANY))) + return buf; + if (desc->flags & _DPRINTK_FLAGS_INCL_TID) { if (in_interrupt()) pos += snprintf(buf + pos, remaining(pos), " "); @@ -790,15 +807,10 @@ static char *__dynamic_emit_prefix(const struct _ddebug *desc, char *buf) task_pid_vnr(current)); } pos_after_tid = pos; - if (desc->flags & _DPRINTK_FLAGS_INCL_MODNAME) - pos += snprintf(buf + pos, remaining(pos), "%s:", - desc->modname); - if (desc->flags & _DPRINTK_FLAGS_INCL_FUNCNAME) - pos += snprintf(buf + pos, remaining(pos), "%s:", - desc->function); - if (desc->flags & _DPRINTK_FLAGS_INCL_SOURCENAME) - pos += snprintf(buf + pos, remaining(pos), "%s:", - trim_prefix(desc->filename)); + + if (unlikely(desc->flags & _DPRINTK_FLAGS_INCL_LOOKUP)) + pos += __dynamic_emit_prefix(desc, buf, pos); + if (desc->flags & _DPRINTK_FLAGS_INCL_LINENO) pos += snprintf(buf + pos, remaining(pos), "%d:", desc->lineno); @@ -810,13 +822,6 @@ static char *__dynamic_emit_prefix(const struct _ddebug *desc, char *buf) return buf; } -static inline char *dynamic_emit_prefix(struct _ddebug *desc, char *buf) -{ - if (unlikely(desc->flags & _DPRINTK_FLAGS_INCL_ANY)) - return __dynamic_emit_prefix(desc, buf); - return buf; -} - void __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) { va_list args; From patchwork Fri Oct 13 22:48:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421859 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5CA44CDB485 for ; Fri, 13 Oct 2023 22:49:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C6B4A10E6A5; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:56 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 22/25] dyndbg: change WARN_ON to WARN_ON_ONCE Date: Fri, 13 Oct 2023 16:48:14 -0600 Message-ID: <20231013224818.3456409-23-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This shouldn't ever happen, and 1st 2 conditions never have. The 3rd condition did happen, due to corrupt linkage due to a missing align(8) in DYNDBG_CLASSMAP_USE, on the static struct allocation into the __dyndbg_class_users section. Not sure whether changing to _ONCE is appropriate - this is a module-load activity, so it won't continuously spam syslog. Signed-off-by: Jim Cromie --- undo BUG_ON addition --- lib/dynamic_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 5825b58043a6..2a5eb64dbc27 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1284,7 +1284,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt, */ for_each_boxed_vector(di, class_users, num_class_users, i, cli) { - if (WARN_ON(!cli || !cli->map || !cli->user_mod_name)) + if (WARN_ON_ONCE(!cli || !cli->map || !cli->user_mod_name)) continue; if (!strcmp(cli->user_mod_name, dt->mod_name)) { From patchwork Fri Oct 13 22:48:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421860 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9C3F8CDB482 for ; Fri, 13 Oct 2023 22:49:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6AC7110E67A; Fri, 13 Oct 2023 22:49:06 +0000 (UTC) Received: from mail-il1-x133.google.com (mail-il1-x133.google.com [IPv6:2607:f8b0:4864:20::133]) by gabe.freedesktop.org (Postfix) with ESMTPS id D078510E64F; Fri, 13 Oct 2023 22:48:58 +0000 (UTC) Received: by mail-il1-x133.google.com with SMTP id e9e14a558f8ab-351437112c1so9977835ab.3; Fri, 13 Oct 2023 15:48:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237338; x=1697842138; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=5LQP5MFDhA+xfUDGLuGe24GCmwsysAw7CRqOtSg8az8=; b=gh1IywdElFUXwKPEUAUawVMRnjacgE2O632upVecKL8D7b9lN+Wsns50bN3KJGNK2p 80fwODK/nSn0OWuA0eKWTTo2FDD+Kv2KKYEFbPz0kyfoyqDKLn254wbM2wepgvk7o3+d I5o4468fLjLsiuephUHm7EvX0xEWUvzyb2r9LL8b51UQN6bnKt3OKKtHy7Fp1xeL0uQm OVFgkzjemAKmBAnkdc+RRW++O0k4vpnwgL8XOb1ZzBdZx0w9U4gwQMPABMk3DnT8/f+j znETCgg2K5fmnhmKiSSe/GJrQI4MBEI97a4LTynFAFsVp2fdJIPg1Wb7aw6FtFm+P40+ l4PQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237338; x=1697842138; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5LQP5MFDhA+xfUDGLuGe24GCmwsysAw7CRqOtSg8az8=; b=R/KZ2N0c+q3mEcwT2BzvBXEp1accVN7qyUgtBkyuu/l4HnDDKnzyfvZeujjSuw+u/q 7x0bP4OTTZ2NevC3/qkVoNH00Mr7CvPWkFsO2V1f+rgGr/UWZUlJp+BnWKj4sZPw+k4X Yy1D7mlAAWU8aAiUeF3bbMtgt/ZwopwQN6JA0xGozpmx1GG6azIeCKdKYtAkDnoAvs4K OVboxKtsSeEwSK+5jPpeFyaP5OLrWyVnrTJAlCMnLQLZ4I4VXJaxnlwQ9AOSxD7D4i7U t6g0lYcVq2LJN3UuD3KcckFHM57aLtDs/wcbBelwTsbTlcYVdzANBbnhsetKG6Ttz5pF 2PvA== X-Gm-Message-State: AOJu0Ywuw+oJq5zi6THbjSA+QMvaIGDP3moWKZmGOzqpUzPJZsskH1fH 8p3+DGlPa2KdCaONq5apPPY= X-Google-Smtp-Source: AGHT+IEJ4ihDtxg4i0f+O3a1nP1WX/0PhyVsSYrOk6CkMFZeWPrAYYUPoiqiZdr7DHr2MyHDmzJNlQ== X-Received: by 2002:a92:c269:0:b0:357:5234:802d with SMTP id h9-20020a92c269000000b003575234802dmr9521151ild.10.1697237338045; Fri, 13 Oct 2023 15:48:58 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:57 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 23/25] drm: use correct ccflags-y spelling Date: Fri, 13 Oct 2023 16:48:15 -0600 Message-ID: <20231013224818.3456409-24-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Incorrectly spelled CFLAGS- failed to add -DDYNAMIC_DEBUG_MODULE, which broke builds with: CONFIG_DRM_USE_DYNAMIC_DEBUG=y CONFIG_DYNAMIC_DEBUG_CORE=y CONFIG_DYNAMIC_DEBUG=n Also add subdir-ccflags so that all drivers pick up the addition. Fixes: 84ec67288c10 ("drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro") Signed-off-by: Jim Cromie --- drivers/gpu/drm/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 215e78e79125..22b1984cc982 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -3,7 +3,8 @@ # Makefile for the drm device driver. This driver provides support for the # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. -CFLAGS-$(CONFIG_DRM_USE_DYNAMIC_DEBUG) += -DDYNAMIC_DEBUG_MODULE +ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG) += -DDYNAMIC_DEBUG_MODULE +subdir-ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG) += -DDYNAMIC_DEBUG_MODULE drm-y := \ drm_aperture.o \ From patchwork Fri Oct 13 22:48:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421861 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 847C9CDB47E for ; Fri, 13 Oct 2023 22:49:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D80EA10E6AD; Fri, 13 Oct 2023 22:49:06 +0000 (UTC) Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by gabe.freedesktop.org (Postfix) with ESMTPS id F096610E65E; Fri, 13 Oct 2023 22:48:59 +0000 (UTC) Received: by mail-il1-x132.google.com with SMTP id e9e14a558f8ab-3528bc102adso9321565ab.2; Fri, 13 Oct 2023 15:48:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697237339; x=1697842139; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=BcqTwHq7sHXYNJa8WmhhNW6roNCK+d1UfmWS8347nH4=; b=NEXHI5k+oahAMOt12lgRhH3m+LEc2dEakqqCTMb+iB5t7gNY6kHcQEpnsea3Seq31M KrblURTy7Rq64tw3jHHvkKEKn9nYLIxqjI+csJwmmYu0hek9VV0Udq/l2e5Wg3yOUfqb E9muLsEBNQv3ZQMmGhb3KWAvSTQCXgEfbWqoFxXFoizHcUKnmKjZS0Hob4qwY7Lv+fv/ Hj8waA+VCanHK/vVth+pN67XZmX0uHXaLP94xaAjwF/d+K+MLescJuhw1rFOsPP6mKeE klNxoVPpXr9JNx57BOEOMyNBg9xrBzpVeJVgQb8QOKZ1bPkMJIQHDx/rx/Kh2DY5OUG9 BeNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697237339; x=1697842139; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=BcqTwHq7sHXYNJa8WmhhNW6roNCK+d1UfmWS8347nH4=; b=XLYFyZJynwbq/p5eb8ThL3+PXVkqlDI3L+JJvYwvL8jsntBGMgSUh4cCOOt6JimFHS p3izuY5sOLzWN4xD0y37kv4S9JAZOHiIXFj3DqHP/glQwXJGZkIl8Zk8GRZuEvT4tFGd mIqUOBgxjI++WzypISgNYehYSw9r4cIXd6bW7U0pbip4Ien9c9zsPnA6H+Tt1iRl46d6 tpYF1SQ0X6eRsT0SELRdncVjUUY0rIlzoem1RmOVVjDwOPbIBpE69QWrPGWMmZ2hhLG7 2kviXKOF1FG6c9W03/Fq18TS2p8sfPpBKU1ElY4LuEByXOpjEIATR9sK0e4oQKxlj9Cn L6zA== X-Gm-Message-State: AOJu0YzwmDEVDxLKTsM5AYcY2Fh2hu8Lw5g+Tgz1lZ0BRYASufsPS5Ee g1KhpBwucoXmOMvcSxY7xX0= X-Google-Smtp-Source: AGHT+IHPWkDZK5L0vKlwHw4LJcd6I+bnQjEfd1HG19gO9TlE5YputijQ0x1Cvt/wPp/jL/6AjBK+ZQ== X-Received: by 2002:a05:6e02:1789:b0:357:3e6d:d543 with SMTP id y9-20020a056e02178900b003573e6dd543mr14421056ilu.23.1697237339195; Fri, 13 Oct 2023 15:48:59 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:58 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 24/25] drm-drivers: DRM_CLASSMAP_USE in 2nd batch of drivers, helpers Date: Fri, 13 Oct 2023 16:48:16 -0600 Message-ID: <20231013224818.3456409-25-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a DRM_CLASSMAP_USE declaration to 2nd batch of helpers and *_drv.c files. For drivers, add the decl just above the module's PARAMs, since it identifies the "inherited" drm.debug param. Note: with CONFIG_DRM_USE_DYNAMIC_DEBUG=y, a module not also declaring DRM_CLASSMAP_USE will have its class'd prdbgs stuck in the initial (disabled, but for DEBUG) state. The stuck sites are evident in /proc/dynamic_debug/control as: class:_UNKNOWN_ _id:N # control's last column rather than a proper "enumeration": class:DRM_UT_CORE This set of updates was found by choosing M for all DRM-config items I found (not allmodconfig), building & modprobing them, and grepping "class unknown," control. There may yet be others. Signed-off-by: Jim Cromie --- drivers/gpu/drm/drm_gem_shmem_helper.c | 2 ++ drivers/gpu/drm/gud/gud_drv.c | 2 ++ drivers/gpu/drm/mgag200/mgag200_drv.c | 2 ++ drivers/gpu/drm/qxl/qxl_drv.c | 2 ++ drivers/gpu/drm/radeon/radeon_drv.c | 2 ++ drivers/gpu/drm/udl/udl_main.c | 2 ++ drivers/gpu/drm/vkms/vkms_drv.c | 2 ++ drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 ++ 8 files changed, 16 insertions(+) diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index e435f986cd13..066d906e3199 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -23,6 +23,8 @@ #include #include +DRM_CLASSMAP_USE(drm_debug_classes); + MODULE_IMPORT_NS(DMA_BUF); /** diff --git a/drivers/gpu/drm/gud/gud_drv.c b/drivers/gpu/drm/gud/gud_drv.c index 9d7bf8ee45f1..5b555045fce4 100644 --- a/drivers/gpu/drm/gud/gud_drv.c +++ b/drivers/gpu/drm/gud/gud_drv.c @@ -31,6 +31,8 @@ #include "gud_internal.h" +DRM_CLASSMAP_USE(drm_debug_classes); + /* Only used internally */ static const struct drm_format_info gud_drm_format_r1 = { .format = GUD_DRM_FORMAT_R1, diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index abddf37f0ea1..d678eb8e028d 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -24,6 +24,8 @@ static int mgag200_modeset = -1; MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); module_param_named(modeset, mgag200_modeset, int, 0400); +DRM_CLASSMAP_USE(drm_debug_classes); + int mgag200_init_pci_options(struct pci_dev *pdev, u32 option, u32 option2) { struct device *dev = &pdev->dev; diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c index b30ede1cf62d..91942ffcc2b4 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.c +++ b/drivers/gpu/drm/qxl/qxl_drv.c @@ -65,6 +65,8 @@ module_param_named(modeset, qxl_modeset, int, 0400); MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)"); module_param_named(num_heads, qxl_num_crtc, int, 0400); +DRM_CLASSMAP_USE(drm_debug_classes); + static struct drm_driver qxl_driver; static struct pci_driver qxl_pci_driver; diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index fa531493b111..ab29945af657 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -247,6 +247,8 @@ int radeon_cik_support = 1; MODULE_PARM_DESC(cik_support, "CIK support (1 = enabled (default), 0 = disabled)"); module_param_named(cik_support, radeon_cik_support, int, 0444); +DRM_CLASSMAP_USE(drm_debug_classes); + static struct pci_device_id pciidlist[] = { radeon_PCI_IDS }; diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c index 3ebe2ce55dfd..ba57c14454e5 100644 --- a/drivers/gpu/drm/udl/udl_main.c +++ b/drivers/gpu/drm/udl/udl_main.c @@ -19,6 +19,8 @@ #define NR_USB_REQUEST_CHANNEL 0x12 +DRM_CLASSMAP_USE(drm_debug_classes); + #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) #define WRITES_IN_FLIGHT (20) #define MAX_VENDOR_DESCRIPTOR_SIZE 256 diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index dd0af086e7fa..086797c4b82b 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -39,6 +39,8 @@ static struct vkms_config *default_config; +DRM_CLASSMAP_USE(drm_debug_classes); + static bool enable_cursor = true; module_param_named(enable_cursor, enable_cursor, bool, 0444); MODULE_PARM_DESC(enable_cursor, "Enable/Disable cursor support"); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 8b24ecf60e3e..9cb6be422621 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -275,6 +275,8 @@ static int vmw_probe(struct pci_dev *, const struct pci_device_id *); static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val, void *ptr); +DRM_CLASSMAP_USE(drm_debug_classes); + MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages"); module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600); MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages"); From patchwork Fri Oct 13 22:48:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13421862 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6B39ECDB483 for ; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id t10-20020a92dc0a000000b003512c3e8809sm1683071iln.71.2023.10.13.15.48.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 15:48:59 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v7b 25/25] drm: restore CONFIG_DRM_USE_DYNAMIC_DEBUG un-BROKEN Date: Fri, 13 Oct 2023 16:48:17 -0600 Message-ID: <20231013224818.3456409-26-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231013224818.3456409-1-jim.cromie@gmail.com> References: <20231013224818.3456409-1-jim.cromie@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lb@semihalf.com, groeck@google.com, linux-doc@vger.kernel.org, jani.nikula@intel.com, daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Lots of burn-in testing needed before signing, upstreaming. NOTE: I set default Y to maximize testing by default. Is there a better way to do this ? Signed-off-by: Jim Cromie --- drivers/gpu/drm/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 3caa020391c7..708f5e8cb205 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -55,8 +55,7 @@ config DRM_DEBUG_MM config DRM_USE_DYNAMIC_DEBUG bool "use dynamic debug to implement drm.debug" - default n - depends on BROKEN + default y depends on DRM depends on DYNAMIC_DEBUG || DYNAMIC_DEBUG_CORE depends on JUMP_LABEL