From patchwork Fri Aug 5 21:53:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 12937755 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4A93C19F2D for ; Fri, 5 Aug 2022 21:56:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241738AbiHEV43 (ORCPT ); Fri, 5 Aug 2022 17:56:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241719AbiHEVzF (ORCPT ); Fri, 5 Aug 2022 17:55:05 -0400 Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EC787C1A6; Fri, 5 Aug 2022 14:54:41 -0700 (PDT) Received: by mail-il1-x132.google.com with SMTP id z8so680546ile.0; Fri, 05 Aug 2022 14:54:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=ZSrYcW0n+hMGbP13qtU8Pp8sbnMOwvc1NQla3G+MVBY=; b=pPw4i+VqbQa25X7qFM0wRNJ8nxyDnFuNDaCsDun2ttngNr71qRrGr4k8NyN7xsD80B 7OEIqPTiLY9pjqLlMqCA6IqcQ4HOo+XNP1ix9evPlP7vO7Y4Inyr2r4bjjSX+Y7R5zKj HBqzGMZzxBa4+4ptNMHk1htpzfhYtw+mflA0z/piZ8WMUwb2U1ZqHiU3Imd97+NRj9ky 9s+6OnPcOXDsdoVQnqcU89Epq/rxnhZWvYbGfrNLUGI18PpSQORnjRdXOq31ZhCtjElZ 5vcklUbLM0pu+LW/VNKLMAEWqRA+MegMEmVcJXzQkN1+nedaHwzujL6llty5ACx/1Dp4 s4aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=ZSrYcW0n+hMGbP13qtU8Pp8sbnMOwvc1NQla3G+MVBY=; b=fQaXsN3TPkpsB7tc6G+3pKI8XsTgJKjiJp4oOafB86mDUpbvlSyJWJiIyCK1s3cxlg ph/TeXP5mSbNIvFWNacFPqHr68BSVUA8seL1Ywa++zOC2ncVUs1r5WkXKhm0RNTSuef7 ptMvsuuj+zo4MUHWwfGomxnrsdQ0xo9/9rk8ruV2RcXeZNNn+Qe2diPRRGi3Nffw3uOa d5wQp2lBJtfL2TJ3UEVKPdk73CaaQgq72iiizagmENkaNcYaxWNT09Ml7SNmXZJRjBgF SxsuZLEl4V7IFyTKQisBlgU8Xh6tNuWyc3ueb/dKgogBCeVgIDcCCLOqnBn2LlHJT3QZ Wl/w== X-Gm-Message-State: ACgBeo0PDBwZBxW23vMtAH33+3FOcWs6B+cxJS1PRK3Bm3RwNE9FSB0E dbonT3k4TC05WslStgGunXm01aivZPvMVw== X-Google-Smtp-Source: AA6agR6G2mXKbweLP8JJH09ZIwf4toE4HNTDaPGGZAufMuf4+BUTj0JP+37VK2t41KmICClDFLB/DQ== X-Received: by 2002:a05:6e02:2164:b0:2de:e996:b8f with SMTP id s4-20020a056e02216400b002dee9960b8fmr4037903ilv.0.1659736480406; Fri, 05 Aug 2022 14:54:40 -0700 (PDT) Received: from frodo.. (c-73-78-62-130.hsd1.co.comcast.net. [73.78.62.130]) by smtp.googlemail.com with ESMTPSA id e12-20020a056602044c00b0067c09fd0b53sm1765532iov.21.2022.08.05.14.54.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Aug 2022 14:54:40 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org Cc: daniel.vetter@ffwll.ch, seanpaul@chromium.org, robdclark@gmail.com, Jim Cromie Subject: [PATCH v5 18/33] doc-dyndbg: describe "class CLASS_NAME" query support Date: Fri, 5 Aug 2022 15:53:40 -0600 Message-Id: <20220805215355.3509287-19-jim.cromie@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220805215355.3509287-1-jim.cromie@gmail.com> References: <20220805215355.3509287-1-jim.cromie@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add an explanation of the new "class CLASS_NAME" syntax and meaning, noting that the module determines if CLASS_NAME applies to it. Signed-off-by: Jim Cromie --- Documentation/admin-guide/dynamic-debug-howto.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/admin-guide/dynamic-debug-howto.rst b/Documentation/admin-guide/dynamic-debug-howto.rst index a89cfa083155..d8954ab05c7b 100644 --- a/Documentation/admin-guide/dynamic-debug-howto.rst +++ b/Documentation/admin-guide/dynamic-debug-howto.rst @@ -35,6 +35,7 @@ Dynamic debug has even more useful features: - line number (including ranges of line numbers) - module name - format string + - class name (as known/declared by each module) * Provides a debugfs control file: ``/dynamic_debug/control`` which can be read to display the complete list of known debug @@ -142,6 +143,7 @@ against. Possible keywords are::: 'file' string | 'module' string | 'format' string | + 'class' string | 'line' line-range line-range ::= lineno | @@ -203,6 +205,15 @@ format format "nfsd: SETATTR" // a neater way to match a format with whitespace format 'nfsd: SETATTR' // yet another way to match a format with whitespace +class + The given class_name is validated against each module, which may + have declared a list of known class_names. If the class_name is + found for a module, callsite & class matching and adjustment + proceeds. Examples:: + + class DRM_UT_KMS # a DRM.debug category + class JUNK # silent non-match + line The given line number or range of line numbers is compared against the line number of each ``pr_debug()`` callsite. A single