From patchwork Wed Oct 18 17:05:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427487 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 DB054CDB484 for ; Wed, 18 Oct 2023 17:06:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7755D10E3FF; Wed, 18 Oct 2023 17:06:13 +0000 (UTC) Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by gabe.freedesktop.org (Postfix) with ESMTPS id A965910E3FC; Wed, 18 Oct 2023 17:06:11 +0000 (UTC) Received: by mail-io1-xd33.google.com with SMTP id ca18e2360f4ac-7a6774da682so28097939f.3; Wed, 18 Oct 2023 10:06:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648771; x=1698253571; 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=kypebqYe90W99nJFdhwn7AqBVG9gMmmh+Uccc80eLRKeMko1mdDx8K6F7JKi2Haj8a I+i+2YHcqtx4O9qQsnxd5iVyU1QeMNBkIFUMfeT+wEkQFi99yiIrZ9YJCNi+rYjwyVhQ Te/F3gKALH50zg3I7pcIuSa+7SG4bZ8DEjJX/pfiRr3mRcbu2FkJQ+DEilL2X2/7zlsV SdRTuwT5yCoW7yWHdg6/n/LXv+Jx50OqxT3XXJOWt03x4BqudSNIcxvF19AV1fKZfrFu YJXZOqDGOOkblnV4Qa8M90PB+d3jbm+ezecqeJGr0imB9/qvXF7SclU5sXNcINIokQ8X TgXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648771; x=1698253571; 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=NwCFR5uKnsvr/ArtaH9c3VjoikMZY6CoExXOr9xnBSJ27PseIwZUfhTc/ZzSVPOAWV rBPD0jsVFNloiinwyRBjZacUsJH4ksjCn+LMZ9J0vQlmR570j/jcomG1lNS8yzNdFLzG 2IjJ6Ln8+W+8IILSdyW/cXdEvsGbkV4ICGfxlX4cw3Po0TQ8ELWWSvearCWJHGYB3Z89 qtyNw8i+UGz5xrNe5inKCfTs5Qfo2VEOWmAsjbOHLKFJN0D6iQbqxgniwQXITyJpbioG 3A4oVj32IuSBkF0MoBjLqTodh8qQLdG3/I2CLN5dRViUQ+ScivKCaoV/ZB3pvpPWzpya KK3w== X-Gm-Message-State: AOJu0YxXtOry2pcGqdAUe4Uzk2SUw7dkOCczIePWD+mMZei+beh/Z/ao Rp5qzAS2eADEU/URiWrCQ34= X-Google-Smtp-Source: AGHT+IHum1ge/GWwDaST0JuAEYZc87D2/tvKkvoNp/zjqblabzEj0CgssZzAbnfUTN58qsmnlybaJw== X-Received: by 2002:a5d:9d8d:0:b0:795:fa0:c13 with SMTP id ay13-20020a5d9d8d000000b007950fa00c13mr8500029iob.12.1697648770918; Wed, 18 Oct 2023 10:06:10 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:10 -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 Date: Wed, 18 Oct 2023 11:05:41 -0600 Message-ID: <20231018170604.569042-2-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 01/24] test-dyndbg: fixup CLASSMAP usage error X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427489 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 4F9CDCDB485 for ; Wed, 18 Oct 2023 17:06:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3829810E406; Wed, 18 Oct 2023 17:06:18 +0000 (UTC) Received: from mail-io1-xd30.google.com (mail-io1-xd30.google.com [IPv6:2607:f8b0:4864:20::d30]) by gabe.freedesktop.org (Postfix) with ESMTPS id D6CA010E3FF; Wed, 18 Oct 2023 17:06:12 +0000 (UTC) Received: by mail-io1-xd30.google.com with SMTP id ca18e2360f4ac-79fd60f40ebso175703039f.1; Wed, 18 Oct 2023 10:06:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648772; x=1698253572; 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=AgPAeisfdmKoBSbTak3/UJvoG2iy2Zp80N3DUOoaXJ9kOlTW4XSqT3WK9HgjZPzpOr gNawq1qs2HUaymslgsOEBeGtT9bGiEBIqaK/o5oSuQOH49KOygHAQhb12CYbFUs5dHSu y/FdvbY3uHQBgTq5qRzWRIuc7bs/0baaeajPOh6aje6DGyLeY+3/yYpFTpmZL497DYcR 2lyZ5oF0W5m3LRA5Uo2hg1eBlXSYMh5/IPA+Kn8HoTrysBkwmR3kct+SFIJRjPTjqAGq Y/xN8ZQhLKSvo3hAbnsGlFp306UfXBZNk5QG7uHfK8Y4nnq9bPJDACzm099IP7XQrQ66 na2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648772; x=1698253572; 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=sWN/FjykgjorgLSnHWad05yUrlKI0oOI2hvP+tQUoDkAGs+O+gvmIr22Xuo9OSzdkq zG6HAhrhO1FUEKB1cmXaxJbw25xAkzlqGRr2xdV/ceTBiL2BAoDWAvmUuhD26KBKYrcK j0lvaczlMz/MrYgoiLOpNmHYoabGr4/4vn/4k4bRAAWbQgWEAob5hulJt1msAiXSxWPM aSfBHv9Y+v6a0b67A6xZFRmcI2A/y8oMReLaLdDD34bCp+0LkkA1gmvNbFP4MKO1x4OL qqbRCzhThADh77zkOCWPXhyVHGdTx1DYLkf/ByGHmSmxuovTMJPVA1TDGXAYu288iGQ+ XdVw== X-Gm-Message-State: AOJu0Yzs1VbQ/jC8/6jAbYhDMF21naqAOT7eMOb6sVEGcoPoWD6BE5oo 6A5pUtIeAem/Ea9Z3Tugazn+4je7jFChGA== X-Google-Smtp-Source: AGHT+IEVOEqYR1bLjUL265nBqQl4ufL7qKQgsJ6xo+Ioj0FHEoq+lERcF7qknhIgjNBA2fErjZMwUg== X-Received: by 2002:a05:6602:158d:b0:785:d5d4:9f26 with SMTP id e13-20020a056602158d00b00785d5d49f26mr5816349iow.9.1697648772072; Wed, 18 Oct 2023 10:06:12 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:11 -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 Date: Wed, 18 Oct 2023 11:05:42 -0600 Message-ID: <20231018170604.569042-3-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 02/24] dyndbg: reword "class unknown, " to "class:_UNKNOWN_" X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427491 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 9353ECDB484 for ; Wed, 18 Oct 2023 17:06:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 20A3B10E414; Wed, 18 Oct 2023 17:06:19 +0000 (UTC) Received: from mail-io1-xd32.google.com (mail-io1-xd32.google.com [IPv6:2607:f8b0:4864:20::d32]) by gabe.freedesktop.org (Postfix) with ESMTPS id 20D6610E402; Wed, 18 Oct 2023 17:06:14 +0000 (UTC) Received: by mail-io1-xd32.google.com with SMTP id ca18e2360f4ac-79fd60f40ebso175703939f.1; Wed, 18 Oct 2023 10:06:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648773; x=1698253573; 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=TJZKGpZvJoZMHeDGO7Cq3aodNDw9HBiHXwCNTBl4hjfMG2jPtfr/wI7qXbJlVSK8sB 62noqx5wpSyYMIAzNMWUV2BrQCoGVAw3r/t6arG0HYkQuIoBtHvA+5jGz5NZNgXWTzuU YoDXCr174D+QW4yVt1Ji7YIc4aP3EpqjV318awJBDISrtS05eufrDSptvNIkTq9d+Sb6 ffyFsxjeBluueIlmg3HMGLSJhTBi7Gxk88+DrmeMa8YMDQbh4Mt+ogf06D0DyAv4YcL8 6E/SQrm2kvb4S0aw5EgdAUDRCBgsDZe8jt2Qc610XdlePw5WZ8mSB0htlyjGgyb6Veh2 nsog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648773; x=1698253573; 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=onK8GTSrfDa33qMLzA3YdkmJEfpMCNqmPPNwBi2hL8aSHYyxtlxG3Gm1rcjSIGKbkA R1M/Dgg0kQ/he3Ju8i7ZK7h3BHsdYM7d1y3gDyedkLqjO92VDpDZMJuUUwuSXM1q57Pa bLvJP+9GkQ7hnxFN3BLRxSNwkd220pVTh/sVkX6zhUCvzXmvZR+ZzhBVlvIvnnr0eaub UaJvwr3Rum/Z+iM0g+Chxics5dhx1PvbZaTqp5wmsnqDMXLbYbhnY+F8OJ22MUL+z7YM a7UJIpCLuHdGNxEsSk2ngPh84y8cGaOSiE8Le6EQ1JRHtBUaZnJTrdkryEf6j5iDmPI9 LnJw== X-Gm-Message-State: AOJu0YyB+tLHQPs69MxRasz9hLVxS7mVXxnObkG+fmO8/thQc0Oksi8y XC7X6FEFroulkmF50n1sBiI= X-Google-Smtp-Source: AGHT+IHC4qfEU9tiSYAxK9P1UlIGyXdQhT0HhIP6RQL7IWtMjBWJEVhbKCGk1E5v8O6KifE2BTCJNw== X-Received: by 2002:a5d:9da6:0:b0:787:8cf:fe82 with SMTP id ay38-20020a5d9da6000000b0078708cffe82mr5775684iob.8.1697648773211; Wed, 18 Oct 2023 10:06:13 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:12 -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 Date: Wed, 18 Oct 2023 11:05:43 -0600 Message-ID: <20231018170604.569042-4-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 03/24] dyndbg: make ddebug_class_param union members same size X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427488 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 8F134CDB483 for ; Wed, 18 Oct 2023 17:06:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 582AE10E405; Wed, 18 Oct 2023 17:06:17 +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 3D87010E402; Wed, 18 Oct 2023 17:06:15 +0000 (UTC) Received: by mail-io1-xd2c.google.com with SMTP id ca18e2360f4ac-7a66b5f7ea7so44319639f.2; Wed, 18 Oct 2023 10:06:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648774; x=1698253574; 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=PNQcklzFBuvSAeJJzK6IvAtJvZje7b9Rv8QlTiSlyBb1CjikA4CswFZ9UymYt1ZZFx SaKw/nbo9Nrrc2IE5n3rtT1fq9938Dz903GuIpWNSX5D7J6eOJW8NYOPc4kWuIl2Ud3Z NtLtmLAVSHCBNTFdXnksBq1k7tsNxZmJB8sBm0yLge/kBawqrMKnK0jkVgVdlzHaI4Mf G5oSx1yDp00aFxo71c1W3hJLDp6MQL8Nig5H856VoWVl5x4pDzP76T2MqK5IdpV4kFZb K/AZZcjZqj2x87lzhc5a5GOQMQjO5RLKqRtEwEGFvmjy0Gp5/lQaCzHCs/qVbOO90iuW Dnkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648774; x=1698253574; 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=IcCjRDngj4+0ImLyldOaPW69LKUZqRKVKlPY5LL4x6mjCDZ6WUhb1s6q94EQiaNn5G rssaTT+nDUjhhvUmWuVrFQ4AbGdd8m8i3tHXimXHsacvpe6KDURpkBy13rOi4N9XPy2u VYIJkrJYUbNDLhH6rsX8Z6LTdM3cazQw6+CHNHLi7jpHI5XAo0t0OpoQm2Si+hoNWfnP 0PkSbKfVLDwUXR5mOJhm9SFcfDtnPjRcnArXaZ+ymCgSXiKWTTYg/OS7QLUsufVNfra+ RSFrS8aIBXjhEcxTiAyz1wR0tHLGxunK4CDEjyMAYZCn4tQv1mYgdfFBTel7yzt0qiU1 8QJg== X-Gm-Message-State: AOJu0Yyjm2sVKDDyvcPYiu1kuyfmuo23kMp7+Mngoishc6Qw1lWbCKW4 pUU+27Oey71YLgT11uz4E5A= X-Google-Smtp-Source: AGHT+IH3G+iubg3vLHpE7zJYGwfCScWtC5/ymAEINrZo3kyMhhFXed9+aE6N1q4H1T1bwHRAcpQWJg== X-Received: by 2002:a05:6602:2acb:b0:791:280:839e with SMTP id m11-20020a0566022acb00b007910280839emr6376663iov.16.1697648774389; Wed, 18 Oct 2023 10:06:14 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:13 -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 Date: Wed, 18 Oct 2023 11:05:44 -0600 Message-ID: <20231018170604.569042-5-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 04/24] dyndbg: replace classmap list with a vector X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427490 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 BAEEECDB483 for ; Wed, 18 Oct 2023 17:06:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F03F310E412; Wed, 18 Oct 2023 17:06:18 +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 375C610E405; Wed, 18 Oct 2023 17:06:16 +0000 (UTC) Received: by mail-io1-xd2c.google.com with SMTP id ca18e2360f4ac-7a66ff282baso22445239f.0; Wed, 18 Oct 2023 10:06:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648775; x=1698253575; 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=TkLr1VelP8JcgnGV4wTQ4eHVVazYw7I7Ja/rBw/zjwJFySsPyG5z1eHFoWKwKLB+/0 /m0BeOPhbvO19L9gbWR0MyhmL+JXWPIUCCxmGXUP01o5xZPGXs0XWyBeeHS8SimpE0kn scb38ZxYDN0i7CXwucQ0uWfmfbrZl19wkW+Emtu5qvXtGTYBBjbML6U/eOpT1iDsaWHo 2GjHSClBLhRrwrJFij/ra0x+vHVtqkWoEEznECuCtbBKEmGYyemvD3pslstAlHvLamBQ 76Mk9N74yoJAzJ4AlkZuJyp2CUaAmvoVXPJINksC4H/ERFPeoWMRdgxL7TMGJ/TrB5Ze iyaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648775; x=1698253575; 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=jUBCEl2J3yUrrAcDfShBVunG7fJ2mbz1DqA8rPmZ6n6b9etaqUQ9j/FypJHydN2Wi0 5XhK8W98nizZsOM4xwJkBNXj0gA81S/KW0iCPmLZW/XuRVYhQYjvPKD7kq4b2eX6IuxV 5sPkyKychp6lb+pSjelLaKTf0AtFi2+019lN5dKAiGkmuq+jVrxAZxclAKY8nbNcCRTn W658t7cx8J3TUy/1TpmQzZJAp1CEGj12Lz3gruJmh/I9aDK/I4IrskSl6aInJdzaPAh3 rapXGqhSAGxo1Azxlh2AW1DqNUXiO8LAVAWFo0YS70AZcgwM1UvvNnptXEIYVlU84JXc IAbQ== X-Gm-Message-State: AOJu0Yx4egPAQtg/RUs7LP6XYkz7C1cyqPp5OMGISh23nG83jhmY138r OLej/F06jryfd4DOL4UVZJA= X-Google-Smtp-Source: AGHT+IEEFMNpCVSGXQqaTv+NE2rtvj56VUp3M8UELCu0RDnUkQIiP8gYA7Pe7Vwc7f27D2ZeuxSFGQ== X-Received: by 2002:a05:6602:160a:b0:794:eb37:b0da with SMTP id x10-20020a056602160a00b00794eb37b0damr5194062iow.2.1697648775455; Wed, 18 Oct 2023 10:06:15 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:15 -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 Date: Wed, 18 Oct 2023 11:05:45 -0600 Message-ID: <20231018170604.569042-6-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 05/24] dyndbg: ddebug_apply_class_bitmap - add module arg, select on it X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427492 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 F04B0CDB482 for ; Wed, 18 Oct 2023 17:06:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A151510E41E; Wed, 18 Oct 2023 17:06:22 +0000 (UTC) Received: from mail-io1-xd34.google.com (mail-io1-xd34.google.com [IPv6:2607:f8b0:4864:20::d34]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6895510E406; Wed, 18 Oct 2023 17:06:17 +0000 (UTC) Received: by mail-io1-xd34.google.com with SMTP id ca18e2360f4ac-7a2a9e5451bso272253039f.1; Wed, 18 Oct 2023 10:06:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648776; x=1698253576; 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=WL33JDVEu3Ml6L0AF2w1LF7Bo/cWatRlqEFgFqwoKAdWxRAZegX3z+7moJdsjCh2Tf 0TkzP7Yo5lZq3PrtkcxTwCz6kJxmOHFLssfxBN17iCquZ47oyTop1C8ZuGJU2t2ImDiE ctXBPOhgnlCf0vNICNcrsr+oPxH8865jR/U/h6bozln9l6k0ymD1O76+5Amv8uQnHAb7 Q/aCMAeb251ApJMzCS+cZqCd8NMWHO/N3ZHkRWl21fLLQHVnniTJQLk/Cs7h9J84DPBf Zz9qqty/WSJ9Zv3wCnQN7zOA2pq171EvvmkF38hOGFvupO6Arq8vgGA3lO8Jewe2tE1Q A+Gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648776; x=1698253576; 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=MHUI5sXBjWDmMXvC/cqRdLV7TpWJwjeoRDStu1OoxqFJ+guuWW3EpZHcDC6tNe1clq H/Y/SA7uBO0CGaBUvT0bwjbe1uSrccGgs/4aZLTO4c5eyMOPeYmVHJzMhzmZDa1Gcp4V QvwPVLvXetDVxFvOmDy4ExyFWNGQib6oMNRuRHM01eMmhfxk9xWQiAd3BMEHP4E1Pe18 2K9KESG74Yp6ByUmRWQsr6T8r+t8Eus8fn+/VmZybu5JGoKqYPVFugS4EMXLV37lAGEp Nz8Q1pK9tld+RFIf8MX6N00wDodfmabpcfPPl3oq3rR/njNrz5ZX/Hja2uZ4s3u2X8j3 GgUQ== X-Gm-Message-State: AOJu0Yy7iVlNLnUF3WJ3mEnppllbWBuePv03/VQdiJr/LrNg4+H9J8RU rLZ4eqPuUDZRB+dmMOv5iyk= X-Google-Smtp-Source: AGHT+IFf2PXR6qhxOLzi0j7IDqB1/kcoDfQ7shdvLOd1Q12INqwalaCXjPDWJY6wrZD0F1b5kbr3fA== X-Received: by 2002:a05:6602:1584:b0:79f:a25b:51c with SMTP id e4-20020a056602158400b0079fa25b051cmr7039686iow.11.1697648776525; Wed, 18 Oct 2023 10:06:16 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:16 -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 Date: Wed, 18 Oct 2023 11:05:46 -0600 Message-ID: <20231018170604.569042-7-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 06/24] dyndbg: split param_set_dyndbg_classes to module/wrapper fns X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427496 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 AFCC9CDB485 for ; Wed, 18 Oct 2023 17:06:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E25B610E40B; Wed, 18 Oct 2023 17:06:27 +0000 (UTC) Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by gabe.freedesktop.org (Postfix) with ESMTPS id E60FD10E411; Wed, 18 Oct 2023 17:06:18 +0000 (UTC) Received: by mail-io1-xd31.google.com with SMTP id ca18e2360f4ac-7a67bc84c87so22026139f.0; Wed, 18 Oct 2023 10:06:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648778; x=1698253578; 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=m4O4ZVv7bp+ebdCgxlfNxfGzHx3xsBJaO/IV3yJ+A/Dfqi/50PD/RBPg+5nANtF3T9 DWTeUSSKjjEfWeZl53T5YuVVEGl2tLP0NFsdBQdf5BIMl5F9QNFe53yLrL2NA2RD9vQm xUEgDFPVtpnxaKWQi69Xi3ZTisWuJKf49gbTyaJl7r0NSuRfW9U4sngD5swFl6JlApn3 BaedF8jOabNi/rgGtp5vMkZGPT+NhQPNSSf4UeKttfbCmI3u0Tsc7WKL1WLMnww+gVkf joivEoYUPQ09gYTEqx40VHfUoD1BBnKN3tRpBzPi9nRec4wiDBVH5fXqb028n6Mh/B9U 4vzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648778; x=1698253578; 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=EnMgFcEfAXFv7pRYxaIEMD+wFEN4ITbeMoq3roNOOFsT5k3MmlyVjLFNhjxvonDC1P 9RFNBT+5gl7+lNh8zHyEZrhmCsTbQ5J8o6GbCf5QY/8Jtre/WNjKBMayzz/6Xk8tKW/J 2Gmqu2LHVUuZZjOEwxpuV99D2BleuW7w9WPipuEQ0oJIKkxxk/3WaXRgUvydH+fMKhnl 1TfyHkuw52enQU42m2c8YFRbC+nW7mvHsqdwvvUCtBaOfxP3GNGN6f7Rx0pXzBeonfAJ BuZ9iLqwZYKDh/5E7+86qkQVT/b9NPlUmaIsgRy/pM5LljmATAPY0SdhYpkI44DG1s0T yC+w== X-Gm-Message-State: AOJu0YxWrWgupwkosLK1QpYuh1xMK9dryX++l/mgrX/bbhC/EGsx4Beg BFXuoWAU3BIGW88REBu5SlI= X-Google-Smtp-Source: AGHT+IHiPCmw3qmoMK7AeF6o0eJf+It/UBfoaChJE/QZZEZ5eOiSjJ85hXm9m0W3TLpYoiqoPplX+w== X-Received: by 2002:a05:6602:2b81:b0:79f:cb49:f476 with SMTP id r1-20020a0566022b8100b0079fcb49f476mr7627926iov.21.1697648778066; Wed, 18 Oct 2023 10:06:18 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:17 -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 Date: Wed, 18 Oct 2023 11:05:47 -0600 Message-ID: <20231018170604.569042-8-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 07/24] dyndbg: drop NUM_TYPE_ARRAY X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:48 2023 Content-Type: text/plain; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:18 -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 Date: Wed, 18 Oct 2023 11:05:48 -0600 Message-ID: <20231018170604.569042-9-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 08/24] dyndbg: reduce verbose/debug clutter X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427493 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 96EB3CDB485 for ; Wed, 18 Oct 2023 17:06:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D6D5010E422; Wed, 18 Oct 2023 17:06:25 +0000 (UTC) Received: from mail-io1-xd2b.google.com (mail-io1-xd2b.google.com [IPv6:2607:f8b0:4864:20::d2b]) by gabe.freedesktop.org (Postfix) with ESMTPS id 012D410E418; Wed, 18 Oct 2023 17:06:20 +0000 (UTC) Received: by mail-io1-xd2b.google.com with SMTP id ca18e2360f4ac-7a269637b98so255560539f.3; Wed, 18 Oct 2023 10:06:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648780; x=1698253580; 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=ZihT1YRDiMJsQZump0m7j8MNIs5cXAS13mDQR2FLptLU9CDAm/2HiVKleIC9AFU3/X xoKAcO4ZrXwRYYgcjNq0ngVyIwk6wyChQjP9NaGGf6oaDZucF6rTQPLemeCgUN0gB/sG zia5pFl/BUOpEJnwmgusGYu66B6xaxpVwKfI3gLXJgaVHTS6kPbIPxutvLvbxfPJjiXY S1iiRIL0n+r/czu9tY9yuiX15lci2kIiba1M7zR/s88Ce29IE9cJbCF0A+5rtFJww+Td OvIE1FHfE0/umXw1tDftw4ezYOdlvS7EFsiW5QEZTF4IeAAj1V0Wr5V/TodzbtHqo+6w rbBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648780; x=1698253580; 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=vhzw3TWmUwQw8qdFjtwzXBIGI63Ow6Nj2apJ+gqpXaEeL+RCzzXLkEHcyiH65+A3Z0 PEDZV/PxB0fJcuJ8axYZH+Rp6RzI7fsJp8oyZfccz+iH1hk61PUbYR8y7Hn2rAo7cwbK En0iSKjVXAPnMCT0MDDr1xLKBmVNdRsAaUq5mvr+PVmBk7iycJ3b4q2NrMfVW7Wmyvc6 HNVSqUCw0Um2IIrMQoPJhbtLnCrogCuHAqJ9EgGQde+VVP/sIdut9b3FYDJceTRZ7YXX +vitw9PgeWIodcMMioKTRI60GYjHbMUBuY2P9uqPD8Zw0i0w885mNzouJmZbA7x6vh2D mUWQ== X-Gm-Message-State: AOJu0YxYtbWz6vwJnpkCBlHhfoQ+Zcbi06r4hwK1dRIUYwPS7VI+yDk3 YpnGI0BgNafuSQTpe7SD3B8= X-Google-Smtp-Source: AGHT+IGIAZvPMDR+fx6OVWKmXyK6iJj0xVodIpeExPc/78Fe8uEKXZgGaoSFAe/fSgw/hj7OJdSkBw== X-Received: by 2002:a05:6602:2e94:b0:786:2125:a034 with SMTP id m20-20020a0566022e9400b007862125a034mr6919099iow.18.1697648780262; Wed, 18 Oct 2023 10:06:20 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:19 -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 Date: Wed, 18 Oct 2023 11:05:49 -0600 Message-ID: <20231018170604.569042-10-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 09/24] dyndbg: silence debugs with no-change updates X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427495 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 403AACDB47E for ; Wed, 18 Oct 2023 17:06:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 64BF410E40E; Wed, 18 Oct 2023 17:06:27 +0000 (UTC) Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by gabe.freedesktop.org (Postfix) with ESMTPS id 722BE10E41B; Wed, 18 Oct 2023 17:06:22 +0000 (UTC) Received: by mail-io1-xd33.google.com with SMTP id ca18e2360f4ac-7a67bc84c87so22029539f.0; Wed, 18 Oct 2023 10:06:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648782; x=1698253582; 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=JUtE+4z38QP6Dxj9qU7t3/Y0f79ZnanYlM/KK54Xhs+2PjJeZgVnV4/GkUFB+lOafD MpLZBRXJFDIApC+OHHFWJzFrSgmvGXdTVVHsJ9WkMLvrRXSnrcENnEbYXpkPEAitrjIj 4QXefPu6Tx7I0u4EUkoigHMtE94lXNxBnHpKNwMeThG6zTY4NB9rf+MqPZWwq2kO1CVM /ZK38zXRKCcY6WiS5mb+ew0HfdB4DVa9rsRDH/6pU8+M64KxzSo7d5gMZOeyk+HDNRF0 BtpAW0Ah34mwE/mdueexQPejnXshRpz/1td90JFyaW+QmuAgNgouuJMUYeACp2bNtry3 aQPg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648782; x=1698253582; 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=iG19MKMjnrLBStw1pFluYKluHH+Nab3n2muaySOBaao3YZXja9NzRVl/5719tg2sxP BZl3WKwda9iGrQ+vvJILaFNDV4/B57waJvuMKHTw+jIBpzma32mzJsybnRHHteZCNSom C73ItHojPqZD7/0xujzK/iMH00G9EV4sUcuUmFVj4rsY6Y4SVHFR2ayr364FZQ8rjxzR P4L5ajWdZ3S23uosOyCDke7SeboDD3QGHrMf8kYVPz3uY2qKfqN7KZ96PEtBZ5bh3yhj ImmWRqAdh+asDJ7slOMEe3sCbGyKxQqabmUxbmWxtOncVCK2QTGaMFga9XxfxBIlZzd6 NDSA== X-Gm-Message-State: AOJu0Yxh3KiS0j8enniBCadko8aEZI8u3EZDxIH6/AE5AMVflyqVRG6m 32k4Gi5deVlq9wsTGiN/3Nk= X-Google-Smtp-Source: AGHT+IG6lZXzulci6YGFdscPrHiN4tISG8h2nXpy9EJZW1KW9NsOJNsFRiWgdpO0OyMO6nbCvvwZ2w== X-Received: by 2002:a05:6602:3fc8:b0:795:c6f:59ff with SMTP id fc8-20020a0566023fc800b007950c6f59ffmr8247388iob.17.1697648781706; Wed, 18 Oct 2023 10:06:21 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:21 -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 Date: Wed, 18 Oct 2023 11:05:50 -0600 Message-ID: <20231018170604.569042-11-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 10/24] dyndbg: tighten ddebug_class_name() 1st arg type X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427498 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 81C0ACDB47E for ; Wed, 18 Oct 2023 17:06:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8C5B610E410; Wed, 18 Oct 2023 17:06:29 +0000 (UTC) Received: from mail-io1-xd30.google.com (mail-io1-xd30.google.com [IPv6:2607:f8b0:4864:20::d30]) by gabe.freedesktop.org (Postfix) with ESMTPS id 88C9C10E421; Wed, 18 Oct 2023 17:06:23 +0000 (UTC) Received: by mail-io1-xd30.google.com with SMTP id ca18e2360f4ac-7a66aa8ebb7so46514239f.3; Wed, 18 Oct 2023 10:06:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648783; x=1698253583; 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=mE/TiDDk4TyCjEYPy9Pj3wk+fsRMvIfX2alH2nesigHIyEBQgLAuanem6xo+Uioz3M Mnd/owxPOG82nJq72YHXoB7TbJMtLsPQdmj3dqq5E+u/qCMJ3XS/0KonGM6N/t/8t2VG BubDO37KbnCa356WXI2bJmXBfQEpLyZOz/j0dpUikHzVGRAWUcOSqnZZmXwugipJ4NCQ ru2PaHcg2kLkeJqNxMieN0vghqvrCEnK81SY54Nu4ZfBjW8hqyxcvsLUSWo5eRabZUj8 E7vEU8eD8bFXaBHkUnH6TM8zK7su42IyXmMdwvtGFLvf3dQiNsSqtqgUwJDTa/Vi7/CP 401g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648783; x=1698253583; 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=SECCi1S/4soT+wLz4iHz43WLT3yzOLFqYPe8CR/TO4QhlJrNWvu4fVbrMVlZfHcLdi 1yjXIDtKPaizhJpZpTAyTk/Xv5sPKixIH/XoKRLllcoK5wdYsuJl/VxVtJR/bJk1Ci/1 LMCcko4LHlBQ4QcuWWJlF0+SRIJOzMhHTufbPvOAn1HZ27usV6sh0J4oiDEHLptqPGTA jAtmqGguhHLBj+IKAuCeCc5kGtm/d5PNKwp7m+pUuQgSqtZf/CRgnLjUlFlIOP8dZvsy BZvcEPgL6xm9AHGxdnHp8C9f7XlwBRNLzA5OmlmEevyUuYgYGx+kKb30IGiKDqIvMJkn c4Fg== X-Gm-Message-State: AOJu0YwgstDsFo2DXyymn0s6hkSDv7c3y0x0P/dFVEqL01D2asZYaBaQ V5DRrHs0nZBvWW/lnx0HR4M= X-Google-Smtp-Source: AGHT+IHwSgJzcl2mC1isOnUR1n8lEaMzpwo/IyCkfNg30nLQICYnG92C+KxlLYP9c5WSIHizRXbwYQ== X-Received: by 2002:a05:6602:2c08:b0:790:fcc2:6e9c with SMTP id w8-20020a0566022c0800b00790fcc26e9cmr6783532iov.12.1697648782777; Wed, 18 Oct 2023 10:06:22 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:22 -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 Date: Wed, 18 Oct 2023 11:05:51 -0600 Message-ID: <20231018170604.569042-12-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 11/24] dyndbg: tighten fn-sig of ddebug_apply_class_bitmap X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427497 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 C9801CDB483 for ; Wed, 18 Oct 2023 17:06:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6BA6410E41F; Wed, 18 Oct 2023 17:06:27 +0000 (UTC) Received: from mail-io1-xd34.google.com (mail-io1-xd34.google.com [IPv6:2607:f8b0:4864:20::d34]) by gabe.freedesktop.org (Postfix) with ESMTPS id 06D3F10E422; Wed, 18 Oct 2023 17:06:25 +0000 (UTC) Received: by mail-io1-xd34.google.com with SMTP id ca18e2360f4ac-77acb04309dso284292939f.2; Wed, 18 Oct 2023 10:06:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648784; x=1698253584; 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=dY88Gg0N5yczLUXx9HGiGuKcqx/7UPqmZ/X4kC87ECzvh0QC6W8IPDK/oWkun6s2RB wuHzZlOyUFU1uNUMVmHCUqF8Earjbq5XrJm+a83oZcmHBgIbS27hwkNvOcdND91moLVo ZkfhtV8JsORRpG/kpjHrv3O3Xztgu0p7cXzkWzMdCpGLxEcZ5lAjWt/xW0U9XCAlAOMZ GllHUPnthS7AELmTdKGLTlWWq5XYuPPf0EwHBOIjaTLwC5G81GayC51W37SAoUAblbqR bHsrUtjkQcq+AQyNyT2E8bmcY2NefQ47pLSdWDwgPK5JFu8+n/ODkFHWDQWsybUVZgFU exAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648784; x=1698253584; 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=J2iVJdhvHY0O9mvzwGG9yqkBHa9Iln01ob7m81dy+CJiN5diuv9UPs2CCDsjr3fvy9 kUKxEjGkCDeKO4/hUNrh8+mGzJ9Hc/HpCEsDLB5dCQ1+Z2UjZ97dywYCvLKFnH3dKO0H wBkRbX+1dup8QuqFJLp5nWudbKw9xAqoAFS4lTDnB96rC5s8jCpHGK2bxWM2XQdPcScU 81LxkjTgFDUdLbMGCqYTE1IIMAxCu0qVJ0V56vY05XkbVzlYl/Uc4sWFMSFGIw7Vb0zc NT+89VRI7Tcm5Qrq/+/7fcmKZF60+OVpRdNdQYYqH5rKzLEZdoeFpxrKawzEDUdKmMBV 48fA== X-Gm-Message-State: AOJu0YyPxE6kBvfiwnmpcozfLtf2aeMBV49HY84/8hA1DVkSEbrV6Bnz f4g1dgoQbUPKvOiXzCFGwQs= X-Google-Smtp-Source: AGHT+IHXn5aDSBWQ4yV+ZfP2Q8uwJsUM84jyQKFm2T659/qUKTQfbS6h1rfjfndzbeqO5bduFZlWHg== X-Received: by 2002:a05:6602:1611:b0:791:2db5:c779 with SMTP id x17-20020a056602161100b007912db5c779mr6946727iow.10.1697648784315; Wed, 18 Oct 2023 10:06:24 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:23 -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 Date: Wed, 18 Oct 2023 11:05:52 -0600 Message-ID: <20231018170604.569042-13-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 12/24] dyndbg: reduce verbose=3 messages in ddebug_add_module X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427499 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 22999CDB484 for ; Wed, 18 Oct 2023 17:06:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 96AC710E426; Wed, 18 Oct 2023 17:06:29 +0000 (UTC) Received: from mail-io1-xd36.google.com (mail-io1-xd36.google.com [IPv6:2607:f8b0:4864:20::d36]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3783A10E3FD; Wed, 18 Oct 2023 17:06:26 +0000 (UTC) Received: by mail-io1-xd36.google.com with SMTP id ca18e2360f4ac-7a66bbb6c1dso41066339f.0; Wed, 18 Oct 2023 10:06:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648785; x=1698253585; 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=xuvBgKxH/ePCbKwGg6BN/bYiL6WaOewS7Hju8gKKacc=; b=IOSMLbxdW4dUKYE/LbroYJp1ncNWau1ZkAJIm27bQ98K+F1SA2pu6w0XIluImWdwM9 MNLuz9dNgEVa3ShoAx1rlY1EyWaQ9wpV/AOxp/u3/ke8n/Nh6qpEEzJf3/rYOtrAOOet BylEFalZxhqD7w6CfMhjpiSkFgo9Ey2DqDRmfn25lhqcWEf5zPK7Wu8ptx7oWIHDEMY2 1jZsb+/fL2WAfZPNvq3+PMyxbGIlydKrn3zxyEYH76PUjDUsk8KLGzW4eoBxWnTbGVE0 nZvKAcp5pk+xGcEOWiG3Jzady3IyHIOYedUdKN6bi6PyN82FWVy7hLmCzG8LnV5z1mYn MCgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648785; x=1698253585; 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=xuvBgKxH/ePCbKwGg6BN/bYiL6WaOewS7Hju8gKKacc=; b=Kj5esNUNyAy3GHnm/YL6h0Qhp+tAXcobSX9/nAN6ScqfaDtNL1xeFBxW0kvejZamRd tGiAS6x/pgQyng+d6y6bID7+hiSTNWj7teFW46h0E3Rk3qGQPvQDIrH6WssJOzl0gwlS VO+f5jTQ2DVLwvsRyvGJ9BBuq7fE+udLOUoEL0Gll6K9beHkA3lMT2Jg9BhpLxWjW58W d7KKmuX2TJadu5aGVpBO4KMks60ijpOPGaRDRtW3CZ2vkGzGnH9lKChDFCe8c2PUelCh M+ShoX/ddHGC5pDLrB1qVBOsERMsd+Hi8rLU9ridJ056vcOVKFFY6LoO8FgaBWLFEbjB BhUQ== X-Gm-Message-State: AOJu0YxEDTfrXg6mj9CqxDX6TT77DNP7DN+sj1o9yYnp8b9zW+VZbUSi l3vsd5iAufLmldzsaE+nTmw= X-Google-Smtp-Source: AGHT+IEFJ0pIJDIde6j5vYJmRvdLs86lzjeT/ewSj18hG0cUl4Jt8d51Top8oFX0MA6nGNRs+1YFkQ== X-Received: by 2002:a05:6602:158d:b0:790:cb89:44eb with SMTP id e13-20020a056602158d00b00790cb8944ebmr7208954iow.1.1697648785385; Wed, 18 Oct 2023 10:06:25 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:25 -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 Date: Wed, 18 Oct 2023 11:05:53 -0600 Message-ID: <20231018170604.569042-14-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 13/24] dyndbg-API: remove DD_CLASS_TYPE_(DISJOINT|LEVEL)_NAMES and code X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 | 26 --------- 3 files changed, 12 insertions(+), 136 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..9e950a911b6c 100644 --- a/lib/test_dynamic_debug.c +++ b/lib/test_dynamic_debug.c @@ -74,13 +74,6 @@ DECLARE_DYNDBG_CLASSMAP(map_disjoint_bits, DD_CLASS_TYPE_DISJOINT_BITS, 0, 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, @@ -88,13 +81,6 @@ DECLARE_DYNDBG_CLASSMAP(map_level_num, DD_CLASS_TYPE_LEVEL_NUM, 14, DD_SYS_WRAP(level_num, p); DD_SYS_WRAP(level_num, T); -/* 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); - /* stand-in for all pr_debug etc */ #define prdbg(SYM) __pr_debug_cls(SYM, #SYM " msg\n") @@ -102,10 +88,6 @@ 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 +111,6 @@ 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 Wed Oct 18 17:05:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427507 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 92E49CDB484 for ; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:26 -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 Date: Wed, 18 Oct 2023 11:05:54 -0600 Message-ID: <20231018170604.569042-15-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 14/24] dyndbg-API: fix CONFIG_DRM_USE_DYNAMIC_DEBUG regression X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 | 111 +++++++++----- lib/test_dynamic_debug_submod.c | 10 ++ 16 files changed, 344 insertions(+), 141 deletions(-) create mode 100644 lib/test_dynamic_debug_submod.c diff --git a/MAINTAINERS b/MAINTAINERS index 7a7bd8bd80e9..ac0b6a4e4ee7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7320,7 +7320,7 @@ 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..c9517d403e06 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" +}; + +#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 (i = 0, iter = di->descs; i < di->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 9e950a911b6c..ff9b879286d5 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 { @@ -60,26 +79,51 @@ 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); /* 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); + +/* 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") @@ -115,6 +159,7 @@ 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 Wed Oct 18 17:05:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427502 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 534C6CDB486 for ; Wed, 18 Oct 2023 17:07:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E6C2710E443; Wed, 18 Oct 2023 17:06:39 +0000 (UTC) Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by gabe.freedesktop.org (Postfix) with ESMTPS id B780810E413; Wed, 18 Oct 2023 17:06:28 +0000 (UTC) Received: by mail-io1-xd2e.google.com with SMTP id ca18e2360f4ac-7a269637b98so255568139f.3; Wed, 18 Oct 2023 10:06:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648788; x=1698253588; 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=jhGNt9jDF2novTMxsYI339VgloJh+A+1hp+EfHNU0QQ=; b=e83KJ0v7prH3kYeWVFUByxiTBreAoCYgQLb1o7EajnVymItQK5DNQqeKGYVmkv2YY0 1O0DTAgVj2T7peSWiJUgWXEekpUW6DQp6njjEQjL0M9zgpmurK0HE0NPwEJRyURNwLyy gIfXqpM9H1jAVldxYVgjS3k1r99ioy6IVDYu3qGC+6ZBKng8T5pTLundS3/GpbBw1y8m FtFMp+lb60ORm7dHuGbystaTsQBWPkmlx/2LZd0Ogm0m/LPhv4L5mxqFV6OY05zfXq6Y RSaDPF3ItiP3jOtvhGGBC72KWBY9M6LpVYoBM+mwK9AoCbZWmT6282CnsdBXu5Qoh3OZ tVYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648788; x=1698253588; 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=jhGNt9jDF2novTMxsYI339VgloJh+A+1hp+EfHNU0QQ=; b=oeNHVSV+6KHz7S76g/BxuhskAl80NriHIHzXnNXU79z0de/wLUMMpm/IbtBvN7JOnX 8wOHvfzeYXlxcPXHR5uXNhXi5BdZ5lsvmcHBVlpX5Qlfm5NSIrcAVL1Lo978qBLqxfeM 2E+5ZEIAdgLWjiEX1tYA/lRUZVW6CVOJ5m/FjTT2/P3Pv7ih9qhloPSJZ+eddaWwOXl8 eH6M3Kn7PUpyU6o33H/yF4D7iYn3Id+JHK4sWtRe2/NZRH4WnAYTAATHQ6XgHok3fl/k VkbUPzXHuAPerqePgPMz+pj07jl3pDslbTivrddMQbj9GgcwoOWp45MxKduvkoPTFneH 7neg== X-Gm-Message-State: AOJu0YxL/9S8yL/sGLbfnfIosQV5d/hp3+tmo9yr0AVO+x+bOXkudA46 Zy0ZtSGKhjwZJyui11StcGsghJ3r0SfCtQ== X-Google-Smtp-Source: AGHT+IEe23ksjOtW/hRiyd89AhJwATbXsUncr2eDH6q2bzfzl7/IMxOi7NXlUHBa8NjCSVKnI86JZQ== X-Received: by 2002:a05:6602:1508:b0:792:792e:6619 with SMTP id g8-20020a056602150800b00792792e6619mr7775630iow.2.1697648787949; Wed, 18 Oct 2023 10:06:27 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:27 -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 Date: Wed, 18 Oct 2023 11:05:55 -0600 Message-ID: <20231018170604.569042-16-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 15/24] dyndbg: refactor ddebug_classparam_clamp_input X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 c9517d403e06..a6ee142668bf 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -653,6 +653,30 @@ 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) @@ -671,26 +695,15 @@ 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)); @@ -1157,16 +1170,27 @@ 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, @@ -1181,9 +1205,9 @@ 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 Wed Oct 18 17:05:56 2023 Content-Type: text/plain; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:28 -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 Date: Wed, 18 Oct 2023 11:05:56 -0600 Message-ID: <20231018170604.569042-17-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 16/24] dyndbg-API: promote DYNDBG_CLASSMAP_PARAM to API X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 | 50 +++++++++++++-------------------- lib/test_dynamic_debug_submod.c | 9 +++++- 5 files changed, 69 insertions(+), 41 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 ff9b879286d5..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 */ @@ -83,12 +68,15 @@ enum cat_disjoint_bits { /* numeric verbosity, V2 > V1 related */ enum cat_level_num { V0 = 14, V1, V2, V3, V4, V5, V6, V7 }; -/* 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, @@ -107,19 +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); @@ -180,5 +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 Wed Oct 18 17:05:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427505 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 7CEF6CDB482 for ; Wed, 18 Oct 2023 17:07:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EFBDB10E44A; Wed, 18 Oct 2023 17:06:42 +0000 (UTC) Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0B7D210E429; Wed, 18 Oct 2023 17:06:31 +0000 (UTC) Received: by mail-io1-xd2a.google.com with SMTP id ca18e2360f4ac-7a26fbfcf8eso283869339f.2; Wed, 18 Oct 2023 10:06:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648790; x=1698253590; 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=e0ZzyPCz3Bwm84OF20FdOsuvDNg5q8Bwk5etS/l1vD0zyq3qVsuW/xZk6zYzpC8FNE Ya+thRYaRjwWfb6N2bE4wAGpyBfuN93y6J20cQeZsTf+omRbE4K4Ltp3YPqOyyAsPw7I J8MffzCXDQo2GAZJQDhkZ9Wg+8FUdqtzU9i2c/02PvfXGT06vjgWLMe+sXk8dv26ArqN vhK3wRPmZqm0STLcAylp+eV86LWl5WoWp+aMGXNMBy4WhJZ4WGEnG+ndTWJlnyZj6VuD 9/BtF6FZ6GmWI+VLe8gJPEuWGBJnjoRqpShJd4ZUW5SHvkVK4/HCSxTq1XG8vIj/jAH3 Dx7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648790; x=1698253590; 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=GANvXyUCQjtxGdyZI8ed0cAdVEL+0DUmoS0p2UC2jBmkd2hptqys/k960rtjH74TqK IoJQJ4eu3vdRqvlYiZ+XTQq8NEjRpb9QrccSrtQzgCrOBcgUyYxOChSw8GxDKT0T9awI Sq19JGRTINf3z0bY5EgWH4RO23iNUmyX+yiwDfGg3djHfV2zT3Qdl55bdDB/9d6n+3dh WwBGDBjxAWJi7gf8gkqnVjleS+KnNZsRlctvwsM407+WaYq96rHt+hEZMI3l+mGbK+be mJSNQW0jvYwqMADi43VWgG6B0HzBgtGugNzUWCYkNcnHHOB/ERt2H3uhzl7rWDE5xPc/ MBiQ== X-Gm-Message-State: AOJu0YwHE0Zlnokk8wgRFNnHjzwCaBheNg89yEVSYKN6/cZOTmcOAIEJ +RYRsK7cnWc/r+AXOD1XibU= X-Google-Smtp-Source: AGHT+IGeS34hWPLdEV6GD7KXfu2etNy8dkuNoYP8ncBjgUPVmKCo3st08l1PMSgKYBwbbu5bFc/nsw== X-Received: by 2002:a05:6602:154a:b0:79f:b2c5:e8b with SMTP id h10-20020a056602154a00b0079fb2c50e8bmr6681430iow.20.1697648790252; Wed, 18 Oct 2023 10:06:30 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:29 -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 Date: Wed, 18 Oct 2023 11:05:57 -0600 Message-ID: <20231018170604.569042-18-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 17/24] dyndbg-doc: add classmap info to howto X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427508 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 79756CDB489 for ; Wed, 18 Oct 2023 17:07:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 293C510E44D; Wed, 18 Oct 2023 17:06:44 +0000 (UTC) Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 13FD810E431; Wed, 18 Oct 2023 17:06:32 +0000 (UTC) Received: by mail-io1-xd2e.google.com with SMTP id ca18e2360f4ac-7a66ff282baso22454239f.0; Wed, 18 Oct 2023 10:06:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648791; x=1698253591; 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=F4tf69JBn7ixs1tRqRMC81xc8On95/Am9DzqPISd+W9653h25MEWi/tDsTIrf7lzuO X6ReyR1oUh+U+9KMb5xYrhDWzEeI3DEGMCrdvXCZ9FcZ/WoimRDy9T8B2eN+jvqbICCD JkiUOZZ4HoBkjYPRhD2lVaVDXEBmZJS1TA3BySXsKWBXSaVD6jlNxvz6egf5VHX00g2v +Lu3xw4lKyZYgQqpU+gicmHsmVOgMDXEabJhgIrMQUS2pSNh4qXj506TqpSN/icZxV+w NR9hyBpzs1hdi4/gzYMBFUCXv96/UEj9g5KnWS/4QX553X5Sf4nXLZ/bITiKy/BkC7+c rxEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648791; x=1698253591; 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=DVUuEqsZbVCSiqpbEmNFNBnCw5FN64wu8xaPb62UmeKBue+eTSHbZAVnri7zMNrhwb SPozXQ8L0e5cuR2JWTJ55451Wi+w3a/skeBiKeXyjxQ8GdAC+ncs3cvFFmBU8Cg7M4fD NkPdOLfAPm7vxA6Om0pM9KsfVXeMGqCYk469vIbTmnEJH2U/3GLh6l9B9Fi57Lm3rQ3X 2lS47Fd2TuuVcmLxAgda7mzOkHaNjGpfrlgVXsePXNWfYvwENh0DTCBQmBieZI55BzUx FhTwKulIeZdwJU7x6MWaGuUGgPDaXXADVgXhJF6ROlQGjm4ySVz6ylBGCyMFTxvr1crF 7Vfg== X-Gm-Message-State: AOJu0YyG2TNd8SJzBzdtDd4nfO4PMJ7jFu3I2M8fotOpAXxx5UlBt08o 4hsQB3KhA0Z3fl0qWk8miYw= X-Google-Smtp-Source: AGHT+IHO6nI4UZVkO1MGJLmf3+IhMzZwOIgWYzq9QH1/8ZQ3okxX0Qw82NbwAuFhs1VVKVleGTXhcg== X-Received: by 2002:a05:6602:8c6:b0:7a6:793d:2079 with SMTP id h6-20020a05660208c600b007a6793d2079mr1483172ioz.1.1697648791342; Wed, 18 Oct 2023 10:06:31 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:31 -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 Date: Wed, 18 Oct 2023 11:05:58 -0600 Message-ID: <20231018170604.569042-19-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 18/24] dyndbg: reserve flag bit _DPRINTK_FLAGS_PREFIX_CACHED X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:05:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427501 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 D0DA7CDB47E for ; Wed, 18 Oct 2023 17:07:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A59C610E43F; Wed, 18 Oct 2023 17:06:40 +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 6EFFB10E43A; Wed, 18 Oct 2023 17:06:33 +0000 (UTC) Received: by mail-il1-x135.google.com with SMTP id e9e14a558f8ab-3515deaa7c1so28915355ab.2; Wed, 18 Oct 2023 10:06:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648792; x=1698253592; 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=isJZJE7aCaX10hkr7sriWOFWtDMcz7dGSnnWArvp1v/WRx/xmOr5aFXS279tfxkZ+3 lZm7TY5W9SrvAyardEbZhEdfdgUV3kRwfvR0V69mCkr/nfaMbrFEZ2AcKblNNsSwwHRh OwNJRPNodsN8oG1OUSbLs/tg4uYsKDEDq7N0pH2UtVPqUgmDVdmwfTNpXJVuF1w/YxjQ RTIbR0VuAABybPuH/1kQPYd2qwDuuRQAaQckMGWJO3Ze1txSpzuItVTKEGqaxJqRffyJ LdUnw5cUBWHYUA9wKJkKLR5KEz2BwRQd6hToWBXZZQg2dJjYHlW+kTpi9KVYc+WJ9L+y 9lLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648792; x=1698253592; 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=IYhIDRdPwXs1L1+OzEJCtDcLzeYoY1og8k512Z6UozK7SFto+TvpX2X+MvYbkK47C6 mX9kUTdxsiLt4sGMD8UNmGdsm39dYw1kQZEUlFGm1HC5e8KBDjndoviYvX+sDVyOTtRF zkBX4sfyj3QpIR3Cx955aSV5QLj93zZ1KSeBauBqfoq1eR88Y1SWCYbQV6m5IwYVYxQy a8B+OTjaqgJGq1fQC09vzUYFW6CNOjzDW+6g71XZWo0oim/hikV1IFNf7F1drM87lx32 xvA4dhnZE1SrKgKKB/3xfy4g7MmioqRTFj4Rz04zmHKD4r70bP8QBoo677Wvm+3NgtKK TFNw== X-Gm-Message-State: AOJu0Yy/3vF+h8HXTo8fZNuCkB4ZDeUQTtR9Ct12xfpD/nN6Q4ap+Sy1 zATvEJrNn0g9aQAg76h4vLY= X-Google-Smtp-Source: AGHT+IHYIKuc7v3Gyr8+p8LkqL6z+dzzReQJCVJIrBuhwNb1SlpPH8WoKoGFfvuTEXJo5vKv8yvKPw== X-Received: by 2002:a05:6602:2c0e:b0:7a6:6d0e:af6e with SMTP id w14-20020a0566022c0e00b007a66d0eaf6emr3211428iov.10.1697648792635; Wed, 18 Oct 2023 10:06:32 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:32 -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 Date: Wed, 18 Oct 2023 11:05:59 -0600 Message-ID: <20231018170604.569042-20-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 19/24] dyndbg: add _DPRINTK_FLAGS_INCL_LOOKUP X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:06:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427504 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 0B4F8CDB487 for ; Wed, 18 Oct 2023 17:07:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5135510E44B; Wed, 18 Oct 2023 17:06:43 +0000 (UTC) Received: from mail-io1-xd30.google.com (mail-io1-xd30.google.com [IPv6:2607:f8b0:4864:20::d30]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F68B10E435; Wed, 18 Oct 2023 17:06:34 +0000 (UTC) Received: by mail-io1-xd30.google.com with SMTP id ca18e2360f4ac-7a67c3d62a3so20013839f.1; Wed, 18 Oct 2023 10:06:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648794; x=1698253594; 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=m1uXLDmoVzvN2oJUe3cXywX9ZoHLJ5owNDwFWfeTZCY=; b=lJpanxktvi8M3dHgA/lx4DmMz/Cdjg0RmZyE2jZcQAd4qajQRbi6ReW2TF5dywAzis dVEGB3AQ3ijDB+bELOPWGMNinHJsVMhikh1xWMtGiz3drzNqRdIHS9QoVBC4bBGDhaFD SVAMGAo/BgKasNeyxmnfdOL0zi5q/vOgd9wpetVzNDRF40LCKn88MEJo3ZHLPSQKKsGc tZLV/6qvb2/R69o2iH4DFooUTaEmnMYOXnd2hyBlMsuf/NTuJeX9odJHkFs+b8JQgAuF QeRjpPwySfIZX6xFmpacky4RFKy6KGSzk+nV9XoJiCIBarEFmuJj49RIrRJr+aWHp2lS YJ+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648794; x=1698253594; 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=m1uXLDmoVzvN2oJUe3cXywX9ZoHLJ5owNDwFWfeTZCY=; b=k+uwYl9Q2oAHAFLt91G90oDyn4WDYQkENvbyqMUOeTalJr00W6bxqTonXAdt4ezvRV 6Zfd3aqTnm7P9CUzAkwAUzm6geUq1Sg0eI/VEN9DsPQnVJb6OnczQG4W8OS9mDYcSY/t ooepNfaENyPcT4L+EntLi+TMSi+n24o0+V1YUNjh/a0i7KgjaLKACm9piE3vCht1Wj3g g2nv6Yy7erbXk5i7LvRGJJpOCfaTV70KDUbwjymx3FNCeDZ6URnQEMyMRGF7w0b0FzJ0 M4kE/fiQYd/Eddh2Lc+/FDdB7LDgTB24MGuDca1BLh7pED5Pe5aeruWWQLu4Ejh5Puof kY9w== X-Gm-Message-State: AOJu0YxCEDK/Xd9UeYvODkpbZzpCT3MwVxVNRSykJ79OzBAFLomkpLMM a4dRsVJDvcJsCD6ZHievD6k= X-Google-Smtp-Source: AGHT+IHDhIJWKLlsUjUBf2pstUmVVUXI2KBM3lV1WAlou8KYnpqF5nM32qgWdz8lmvtKHbmk8V74eQ== X-Received: by 2002:a05:6602:48e:b0:79f:9eb4:3ea1 with SMTP id y14-20020a056602048e00b0079f9eb43ea1mr8307541iov.3.1697648793755; Wed, 18 Oct 2023 10:06:33 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:33 -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 Date: Wed, 18 Oct 2023 11:06:00 -0600 Message-ID: <20231018170604.569042-21-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 20/24] dyndbg: refactor *dynamic_emit_prefix X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 a6ee142668bf..9db797a0cf82 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -774,11 +774,28 @@ 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), " "); @@ -787,15 +804,10 @@ 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); @@ -807,13 +819,6 @@ 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 Wed Oct 18 17:06:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427503 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 0626BCDB483 for ; Wed, 18 Oct 2023 17:07:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1E43A10E441; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:34 -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 Date: Wed, 18 Oct 2023 11:06:01 -0600 Message-ID: <20231018170604.569042-22-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 21/24] dyndbg: change WARN_ON to WARN_ON_ONCE X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 9db797a0cf82..213110ec1e9c 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1281,7 +1281,7 @@ static void ddebug_attach_user_module_classes(struct ddebug_table *dt, */ for (i = 0, cli = di->class_users; i < di->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 Wed Oct 18 17:06:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427509 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 18867CDB483 for ; Wed, 18 Oct 2023 17:07:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7B1FE10E44E; Wed, 18 Oct 2023 17:06:45 +0000 (UTC) Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9F7A910E41A; Wed, 18 Oct 2023 17:06:36 +0000 (UTC) Received: by mail-io1-xd29.google.com with SMTP id ca18e2360f4ac-7a2cc9ee64cso270762239f.1; Wed, 18 Oct 2023 10:06:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648796; x=1698253596; 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=JOrNYuncCNRB4EXA5RVzZn/TQSLTPza+ZahbfvuUf7s0Zg/tIOftIKGk4rE4neT/GR zQYPG8v/gv4K1GUr/rxLJ6VGzuRey8YR4ufdpiQHSHv8guGMqhDG3gIX/xy1eUxLzuxb xenl4zSH0E4ta3djNzuiJG+j4eYKjpEX4/ksj3+MqUqo7qLZvUQu9Sh9g01i5nuBoW3k c8jt6KNsb0WYNHuxdS/atu2PBeqYD8+qUZHZCM6VF/nN4Y0z/eNfQC1qSpjQrvMoLasl l6Zn3x72KATRcwKYBj1tNQCdTY4vOQy8TlvxcJNKzwEXmSrr2eOnSsfYcclSqB/cSTX2 UNOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648796; x=1698253596; 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=qL3KAk6RmUt4ip4m5sV4yiGFpLI18ZEHBA6d2wiOhym3UQuODwIMEup9KtQchLaQOn RdYXECh3X7Q9ffZ4jPpLUf7uQ1XzCSZqJiS1xbicfygPrzP4kq0xaXdbDo4B3DfO1MlQ pOCpThyxBhlYFfmp1wu0vUUzqrRTWHZ1iNdwCjCTpzuOhfrZrzKSq1x3JyMHr/k72OJJ YdLt55Wp3UX1NfqUQPSAuochNxq6caYuSBHzDDm13yz06ZB+ZUjAC5Hxs3fDHZYJc2JO vJFvgFXjzqT1llUNJOamiZAnglN3F7vOzSf8WCSbdaMJ7TT0Q4YWA2R/yRsz5xI4nwu1 AcHA== X-Gm-Message-State: AOJu0Yw3CSupb/wHhpN3wDbXlq75KoCo7BwhCNf0OwtnjyyFX9slqJWV QmiCmGLaKEYEVghZ0yvKQp0= X-Google-Smtp-Source: AGHT+IEc4mOF8fsJ6PP9Q0I6owI0pWzjQPyiy/8zqDoyKE5tRBFWh3/xkkNAKOARyTu4me/pvUabfg== X-Received: by 2002:a05:6602:2e0f:b0:792:70c2:9db1 with SMTP id o15-20020a0566022e0f00b0079270c29db1mr5926401iow.1.1697648795893; Wed, 18 Oct 2023 10:06:35 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:35 -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 Date: Wed, 18 Oct 2023 11:06:02 -0600 Message-ID: <20231018170604.569042-23-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 22/24] drm: use correct ccflags-y spelling X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:06:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427510 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 04BB7CDB483 for ; Wed, 18 Oct 2023 17:07:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5169610E41A; Wed, 18 Oct 2023 17:06:54 +0000 (UTC) Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by gabe.freedesktop.org (Postfix) with ESMTPS id C40FD10E41A; Wed, 18 Oct 2023 17:06:37 +0000 (UTC) Received: by mail-io1-xd33.google.com with SMTP id ca18e2360f4ac-79fce245bf6so284202239f.1; Wed, 18 Oct 2023 10:06:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697648797; x=1698253597; 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=SR9tWH9hJ+mIBaRkDjvC+tXEdXoX5AZPVMhX9ZG+uGSlQxdt3YKOk4W+lWy6DJn0vs i+DPEqms+/tEhTSaT/KQQCOhxO1KRIhcCtUUkDvpiL7oURzUoSSIo676F+su+BhJlu5C ImsCVjVlAbPlvAu8Ysk+O3rgeFCXP/dpZo1f/Mdm0ya36wy7sVq3DEa8i9krg3NbUAjF QYPr+16vK8tKKI9knVJEKaaCoQAVBgL3ZUyzNGSkt7z2T2r2bws7eVC/OwMQz+eid/lx wX+b7FXK2t3PvdbhrzIReCIbsCMJjoohWE6VQ1pAPArgXTuG1LWaQRCgRLChZceA444K ALxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697648797; x=1698253597; 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=oWyIV1Cx2DOqvBT5jobpikVtTMxJSA1Gi17Tf5EkZ3ibjJOX0ILBGwwU3dspG9krAu Qtgz8ujFO5tEFtWegqpzxKIyQPwnfrTzqW88dPmSpPT18ckwAGv7KjdLijpX7p28mdV7 isSjJOWAS4YRwttA1bNhGDsGWgyzTXgzRZE2kt+LnsA78K7lkVO8MZzZKabHOHf78o0K u9Lp62gl/x4v1Z9U+ya9GYfoI/ECKeF0UMTmMXn/FEha7nQtCCpbHVJdRxXJwMfW2EvT BpD7gmC2TOAlV2Eb8ZaQS7vSz9kseDDANPNQF9Kbt1/1fwreTsI29dy2UdWPR6orZ2/F OBzQ== X-Gm-Message-State: AOJu0YzoqLueGKV5n03Gk6a2UvkPqEoCi6f4y7xv3ysTpBOgvO214xe3 RWTGqU0wRmxFCLLcp62ulyY= X-Google-Smtp-Source: AGHT+IGEoGW0dhG7fjOKBkU+mUiWJ+Phy8IGnV+99em8GKf+aT51e3VHKzqKbrMN+P1EiWIEky4Vig== X-Received: by 2002:a05:6602:14d0:b0:790:c259:4ee5 with SMTP id b16-20020a05660214d000b00790c2594ee5mr7271761iow.8.1697648796972; Wed, 18 Oct 2023 10:06:36 -0700 (PDT) Received: from frodo.. 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:36 -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 Date: Wed, 18 Oct 2023 11:06:03 -0600 Message-ID: <20231018170604.569042-24-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 23/24] drm-drivers: DRM_CLASSMAP_USE in 2nd batch of drivers, helpers X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 Wed Oct 18 17:06:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 13427506 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 7FA37CDB488 for ; 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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id n4-20020a5d8244000000b0079fa1a7cd36sm1228944ioo.30.2023.10.18.10.06.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 10:06:38 -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 Date: Wed, 18 Oct 2023 11:06:04 -0600 Message-ID: <20231018170604.569042-25-jim.cromie@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018170604.569042-1-jim.cromie@gmail.com> References: <20231018170604.569042-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v7c 24/24] drm: restore CONFIG_DRM_USE_DYNAMIC_DEBUG un-BROKEN X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & 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, rostedt@goodmis.org, Jim Cromie , mcgrof@kernel.org, seanpaul@chromium.org, joe@perches.com, bleung@google.com, yanivt@google.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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