From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E014C4CEC9 for ; Sat, 14 Sep 2019 10:32:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB148206A4 for ; Sat, 14 Sep 2019 10:32:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="tjH2DXWI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729170AbfINKc0 (ORCPT ); Sat, 14 Sep 2019 06:32:26 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:40398 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728841AbfINKc0 (ORCPT ); Sat, 14 Sep 2019 06:32:26 -0400 Received: by mail-pf1-f196.google.com with SMTP id x127so19634155pfb.7 for ; Sat, 14 Sep 2019 03:32:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=kMiRV74Zi6buasstnWsWMf+sxpVUSgy2RNkWLC1ySAE=; b=tjH2DXWIPJzMfUSGBjiZfSkXXIQTgolVoS+0vo/XQEAfCNjqjf6Ju8suZBkH+2eZcm 7PWa+s9Ziw7iONfCgiBlZaGaBnERRJnMteqG5mBl8NwxxufyGe9xiXzmUaI+JG5Rskua 6bzzgC0J2PTRKoZW+XhwVav3w6zqFQ/ye/ZNPBV524Nh/LvhvFtT/yValIv0RFO27HOG 6xzrqysvdx1qTftOdUsEPyfoHkkvX4uqrr2IwPLlvWm7JR6JSl8XFVgvI1ejH/mJhv84 k1ckzRHy0D2ftLqI72m4xT6x/zmPZkrXZ4AfByNmX13FnboFM7AAcpzDH0FssB8IjNhz msUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=kMiRV74Zi6buasstnWsWMf+sxpVUSgy2RNkWLC1ySAE=; b=Ex1IQGU5rvHyU/5bGaIDns1a/kksoHyOu7keT2TM5U3YGqgbQcwtBmrarjPZ/vB3VZ O1Qq8KSD4yrECWiUiAcDKLpV7TZFkBn/o4tvHphqHK7syx4oApIsm4By9g8fBBh31zfw KBuSsiRV/df7K5Iaf/xL6qNgvnmG/C4AOct7xz+yrFR/NnNqZBbeXSr6xYB9efNpiDkC SuDBBnnJIIUlxu7dZIX529kUBQWDNMZUvP1DUzVZGY1mzraRiMckX9SaPvUvc7wijcVq 5GO1Op7If/BSmPZWMMSGuqsJDc53l7zlVGTa+Gb26DZMQwTtvQ4ZsQ1wPhbNpzJp2RNT Q72w== X-Gm-Message-State: APjAAAWGlLx/74KsYjqf/288lmYMaLtQakBHVjstgyJjyKyQxyEKGR1p HG54Sr7BZiDodhLXUaYO+DpdCUnKKDc2Zw== X-Google-Smtp-Source: APXvYqwA3Q6JIegT9xwctFSiqW7xDEHwxnKE9YSfS9H7X9l/pgoGIaberQJDu83cH8oI5fk7OozS4w== X-Received: by 2002:a63:487:: with SMTP id 129mr20664438pge.14.1568457145610; Sat, 14 Sep 2019 03:32:25 -0700 (PDT) Received: from localhost.localdomain ([149.28.153.17]) by smtp.gmail.com with ESMTPSA id z2sm2345536pfq.58.2019.09.14.03.32.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Sep 2019 03:32:24 -0700 (PDT) From: Changbin Du To: Steven Rostedt Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Changbin Du Subject: [PATCH] mm, tracing: print symbol name for call_site Date: Sat, 14 Sep 2019 18:32:15 +0800 Message-Id: <20190914103215.23301-1-changbin.du@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To improve the readability of raw slab trace points, print the call_site ip using '%pS'. Then we can grep events with function names. [002] .... 808.188897: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80 [002] .... 808.188898: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820 [002] .... 808.188904: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8 [002] .... 808.188913: kmem_cache_alloc: call_site=prepare_creds+0x26/0x100 ptr=0000000058d74ef8 bytes_req=168 bytes_alloc=576 gfp_flags=GFP_KERNEL [002] .... 808.188917: kmalloc: call_site=security_prepare_creds+0x77/0xa0 ptr=0000000062400820 bytes_req=8 bytes_alloc=336 gfp_flags=GFP_KERNEL|__GFP_ZERO [002] .... 808.188920: kmem_cache_alloc: call_site=getname_flags+0x4f/0x1e0 ptr=00000000cef40c80 bytes_req=4096 bytes_alloc=4480 gfp_flags=GFP_KERNEL [002] .... 808.188925: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80 [002] .... 808.188926: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820 [002] .... 808.188931: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8 Signed-off-by: Changbin Du --- include/trace/events/kmem.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h index eb57e3037deb..69e8bb8963db 100644 --- a/include/trace/events/kmem.h +++ b/include/trace/events/kmem.h @@ -35,8 +35,8 @@ DECLARE_EVENT_CLASS(kmem_alloc, __entry->gfp_flags = gfp_flags; ), - TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s", - __entry->call_site, + TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%s", + (void *)__entry->call_site, __entry->ptr, __entry->bytes_req, __entry->bytes_alloc, @@ -131,7 +131,8 @@ DECLARE_EVENT_CLASS(kmem_free, __entry->ptr = ptr; ), - TP_printk("call_site=%lx ptr=%p", __entry->call_site, __entry->ptr) + TP_printk("call_site=%pS ptr=%p", + (void *)__entry->call_site, __entry->ptr) ); DEFINE_EVENT(kmem_free, kfree, -- 2.20.1