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=-9.6 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 96372C54E4B for ; Sun, 10 May 2020 15:08:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 68B5720820 for ; Sun, 10 May 2020 15:08:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qyGmyvFV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729211AbgEJPIX (ORCPT ); Sun, 10 May 2020 11:08:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729200AbgEJPIX (ORCPT ); Sun, 10 May 2020 11:08:23 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A7E9C061A0C for ; Sun, 10 May 2020 08:08:23 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id f15so2816179plr.3 for ; Sun, 10 May 2020 08:08:23 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=6NpM/ijFwbSoPlLQVQ01gf0hqXiBa151ApMA2ShJDAE=; b=qyGmyvFVxdI1tt3UUACq/6PHoEQ7KstS6iicTyDfB2h6TdHVQKBOWPJJQVwa5UqlVj gwZW+Z22uCgn4Kw9Y488YJ4KINDVWmlEk+xYJ9xMduzWY6jkslwolUNI395Pmv+JO50z OHmA5HXqdbN8U1rVrf0wV6y9WGqGiI6UTHh7po5KDZGbYt2XCqvsiIhuJPAHxa20z4ji lwpLPy12QTC5M6JQKjRBdld6gbqJfG7NL+uuIUhxET6u9yxKw25Of56ReVUkalgtxTYr Q33Au/8vfyW6QbbY3QUAlRGywN1Cctvg3v+kDRGf1X4ZZOl12kk8aIlB0z8Ma/aWzErK OtQA== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=6NpM/ijFwbSoPlLQVQ01gf0hqXiBa151ApMA2ShJDAE=; b=CpzHljfwAcdBcr+z0mscOK/BKea/2F4l1JEz2clxQ8wCSvaLv5CD8Cs+aGrpXrty8a fyBVmxyuyvw8/hj0lu0vRjD2cOuEawXmToGVJ/XGR2xbI0qzUHmbdtUe5YVec5YRaR1Y WNbDVyD3urEv3fPZ3CVqGJcArkbsORyoCCmXizOrM6TvzfP0rhJ1iLAQK0LnslKNMlTr F8ocrLNNYgq1SlRdmchXXXl6n8o8YuXqdbrc8PaGfVvt9zyUCUEDksYQs8d/x5FZV1uE YCYqOhc5szJvMpeyk+ZDVb1V4AKC0X9ShdylcmRo3dl3JkiH5O9G/8KUlhTqAqZPLNLN YIsQ== X-Gm-Message-State: AGi0PuaBrTL3ltmK7M9hoKopsvwbq1mFUwTVkIYHpq45n5GBJ0PMcNoY FBFVF6jSxRTK01Q28mwMpWo= X-Google-Smtp-Source: APiQypIYIckL8pDMg7ZWoRaRvQtrMYySIu2zj781PGFikQfx5k09fYPiufF4hfadOZ+LMuYMERst9Q== X-Received: by 2002:a17:90a:f995:: with SMTP id cq21mr16511616pjb.56.1589123302608; Sun, 10 May 2020 08:08:22 -0700 (PDT) Received: from vultr.guest ([149.248.10.52]) by smtp.gmail.com with ESMTPSA id v7sm6870909pfm.146.2020.05.10.08.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2020 08:08:21 -0700 (PDT) From: Changbin Du To: Jiri Olsa , Arnaldo Carvalho de Melo Cc: Peter Zijlstra , Ingo Molnar , Namhyung Kim , Steven Rostedt , linux-kernel@vger.kernel.org, Changbin Du Subject: [PATCH 07/19] perf ftrace: add support for trace option funcgraph-irqs Date: Sun, 10 May 2020 23:06:16 +0800 Message-Id: <20200510150628.16610-8-changbin.du@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200510150628.16610-1-changbin.du@gmail.com> References: <20200510150628.16610-1-changbin.du@gmail.com> 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 This adds an option '--nofuncgraph-irqs' to filter out functions executed in irq context. Signed-off-by: Changbin Du --- tools/perf/builtin-ftrace.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index d3fcf3b0b792..b16600a16efa 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -41,6 +41,7 @@ struct perf_ftrace { int graph_depth; bool func_stack_trace; bool nosleep_time; + bool nofuncgraph_irqs; }; struct filter_entry { @@ -188,6 +189,7 @@ static void reset_tracing_options(struct perf_ftrace *ftrace __maybe_unused) { write_tracing_option_file("func_stack_trace", "0"); write_tracing_option_file("sleep-time", "1"); + write_tracing_option_file("funcgraph-irqs", "1"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -358,6 +360,17 @@ static int set_tracing_sleep_time(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_funcgraph_irqs(struct perf_ftrace *ftrace) +{ + if (!ftrace->nofuncgraph_irqs) + return 0; + + if (write_tracing_option_file("funcgraph-irqs", "0") < 0) + return -1; + + return 0; +} + static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) { char *trace_file; @@ -431,6 +444,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_funcgraph_irqs(ftrace) < 0) { + pr_err("failed to set tracing option funcgraph-irqs\n"); + goto out_reset; + } + if (write_tracing_file("current_tracer", ftrace->tracer) < 0) { pr_err("failed to set current_tracer to %s\n", ftrace->tracer); goto out_reset; @@ -568,6 +586,8 @@ int cmd_ftrace(int argc, const char **argv) "Max depth for function graph tracer"), OPT_BOOLEAN(0, "nosleep-time", &ftrace.nosleep_time, "Measure on-CPU time only (function_graph only)"), + OPT_BOOLEAN(0, "nofuncgraph-irqs", &ftrace.nofuncgraph_irqs, + "Ignore functions that happen inside interrupt (function_graph only)"), OPT_END() }; -- 2.25.1