From patchwork Thu Feb 17 03:48:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jim Cromie X-Patchwork-Id: 12749303 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 6FC01C433EF for ; Thu, 17 Feb 2022 03:49:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A9E9810E747; Thu, 17 Feb 2022 03:48:52 +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 2A51E10E79A; Thu, 17 Feb 2022 03:48:50 +0000 (UTC) Received: by mail-io1-xd32.google.com with SMTP id e79so2179649iof.13; Wed, 16 Feb 2022 19:48:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yubkIm83qdloKERgFDUIX083yqNPWzHEzjvX+hTfJ+Y=; b=N1IkzBPBU/xJbo1PKkybMqkfWAIZsR6V2YWUlr/wuluFy+5Vw2QTXHgRMKh/jowF/E msSbyBi6jCA1HO6o6ohcDrXTynt5+/ZQHCR250mlg1SHvuEi5qzQiFVAFcybPHmVyxf3 JbOXGcwIDGtcwP4dBWPHdoopigc9FdHTcapQoe0xaeUneF5xxv2xRXDAQp7RrU8d/Pl9 s9hiQ6wp7rqx43o8gAXfpv6A2NreoiXaEIRU/6ixQvnF3VmN0sfIBRBCd6dAQMPRDMsM oj2Oj7n7u6hZbbSyPjfwfj6fDlPRYPJlvHtnyeL4qF3vmtl8ot230CgMELVbfzKhjFhw g9ig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yubkIm83qdloKERgFDUIX083yqNPWzHEzjvX+hTfJ+Y=; b=Jj2dKuz91qzjMJqdqvKVBlS+/P7+oqBwmZWy8GFGMsWbcPDakz6LRyPHWgq9EF0DOY XEATBznZsZUZHVWjle19olRoyOXFqQITXnJkeOsTWPTo/jJESjsM1qUs0wqL6OMbMW+T CtnJEiagpSw2xD4R+0DHQUcqQExXvv3AmgBEkY4sz5McFslklf6YdOq6tU9FWzb0ddAi T9/xPWlixhzyi7n0KpJX/HLeh21IVrazTTVEA6ak1ZOBhRaKQXd9OmBLTZK4vbYClkoe 0NFAZ3RnxNW8Vq4Csp47UD4Lfbn2tpVAC3hwbnQ8oPlslRHJwuU3ER39Yufkd/GbSwMA dvig== X-Gm-Message-State: AOAM533yCSYS73mkEhuxHpFeqJS3Cl1+dKbmoJN4/73Q2ZiQGWGDXTZu 9rpRawDr8k7r6+sqhpq5HJc= X-Google-Smtp-Source: ABdhPJyXKQlyPhg9qrLLs3CjhrhOjCktwIEw8sMQ+X+99JL80wUnSMgiJ4m7gTwWkHGlQBBJ2w7oAw== X-Received: by 2002:a05:6638:389e:b0:313:f3ea:b18f with SMTP id b30-20020a056638389e00b00313f3eab18fmr764155jav.206.1645069729327; Wed, 16 Feb 2022 19:48:49 -0800 (PST) Received: from frodo.hsd1.co.comcast.net ([2601:284:8204:2010::1b19]) by smtp.googlemail.com with ESMTPSA id l16sm1127874ilc.54.2022.02.16.19.48.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Feb 2022 19:48:49 -0800 (PST) From: Jim Cromie To: jbaron@akamai.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Date: Wed, 16 Feb 2022 20:48:24 -0700 Message-Id: <20220217034829.64395-9-jim.cromie@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220217034829.64395-1-jim.cromie@gmail.com> References: <20220217034829.64395-1-jim.cromie@gmail.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 08/13] drm_print: interpose drm_*dbg with forwarding macros 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: Jim Cromie , daniel.vetter@ffwll.ch, linux@rasmusvillemoes.dk, seanpaul@chromium.org, joe@perches.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" drm_dev_dbg() & drm_dbg() sit below the categorized layer of the DRM debug API, and implement most of it. These are good places to insert dynamic-debug jump-label mechanics, allowing DRM to avoid the runtime cost of drm_debug_enabled(). Set up for this by changing the func names by adding '__' prefixes, and define forwarding macros to the new names. no functional changes. memory cost baseline: (unchanged) bash-5.1# drms_load [ 9.220389] dyndbg: 1 debug prints in module drm [ 9.224426] ACPI: bus type drm_connector registered [ 9.302192] dyndbg: 2 debug prints in module ttm [ 9.305033] dyndbg: 8 debug prints in module video [ 9.627563] dyndbg: 127 debug prints in module i915 [ 9.721505] AMD-Vi: AMD IOMMUv2 functionality not available on this system - This is not a bug. [ 10.091345] dyndbg: 2196 debug prints in module amdgpu [ 10.106589] [drm] amdgpu kernel modesetting enabled. [ 10.107270] amdgpu: CRAT table not found [ 10.107926] amdgpu: Virtual CRAT table created for CPU [ 10.108398] amdgpu: Topology: Add CPU node [ 10.168507] dyndbg: 3 debug prints in module wmi [ 10.329587] dyndbg: 3 debug prints in module nouveau Signed-off-by: Jim Cromie --- drivers/gpu/drm/drm_print.c | 10 +++++----- include/drm/drm_print.h | 9 +++++++-- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index f783d4963d4b..e45ba224e57c 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -256,8 +256,8 @@ void drm_dev_printk(const struct device *dev, const char *level, } EXPORT_SYMBOL(drm_dev_printk); -void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, - const char *format, ...) +void __drm_dev_dbg(const struct device *dev, enum drm_debug_category category, + const char *format, ...) { struct va_format vaf; va_list args; @@ -278,9 +278,9 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, va_end(args); } -EXPORT_SYMBOL(drm_dev_dbg); +EXPORT_SYMBOL(__drm_dev_dbg); -void __drm_dbg(enum drm_debug_category category, const char *format, ...) +void ___drm_dbg(enum drm_debug_category category, const char *format, ...) { struct va_format vaf; va_list args; @@ -297,7 +297,7 @@ void __drm_dbg(enum drm_debug_category category, const char *format, ...) va_end(args); } -EXPORT_SYMBOL(__drm_dbg); +EXPORT_SYMBOL(___drm_dbg); void __drm_err(const char *format, ...) { diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index b3b470440e46..4bed99326631 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -334,7 +334,7 @@ __printf(3, 4) void drm_dev_printk(const struct device *dev, const char *level, const char *format, ...); __printf(3, 4) -void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, +void __drm_dev_dbg(const struct device *dev, enum drm_debug_category category, const char *format, ...); /** @@ -383,6 +383,9 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, } \ }) +#define drm_dev_dbg(dev, cat, fmt, ...) \ + __drm_dev_dbg(dev, cat, fmt, ##__VA_ARGS__) + /** * DRM_DEV_DEBUG() - Debug output for generic drm code * @@ -484,10 +487,12 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, */ __printf(2, 3) -void __drm_dbg(enum drm_debug_category category, const char *format, ...); +void ___drm_dbg(enum drm_debug_category category, const char *format, ...); __printf(1, 2) void __drm_err(const char *format, ...); +#define __drm_dbg(fmt, ...) ___drm_dbg(fmt, ##__VA_ARGS__) + /* Macros to make printk easier */ #define _DRM_PRINTK(once, level, fmt, ...) \