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=-12.8 required=3.0 tests=BAYES_00,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=unavailable 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 0EEFDC433E0 for ; Fri, 10 Jul 2020 13:45:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DDF70207D0 for ; Fri, 10 Jul 2020 13:45:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XZu9+pWQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728309AbgGJNp0 (ORCPT ); Fri, 10 Jul 2020 09:45:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727768AbgGJNpK (ORCPT ); Fri, 10 Jul 2020 09:45:10 -0400 Received: from mail-pj1-x1044.google.com (mail-pj1-x1044.google.com [IPv6:2607:f8b0:4864:20::1044]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2B10C08C5CE for ; Fri, 10 Jul 2020 06:45:10 -0700 (PDT) Received: by mail-pj1-x1044.google.com with SMTP id ls15so2644851pjb.1 for ; Fri, 10 Jul 2020 06:45:10 -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=N7KG5QWQXC0DT5Wy+0SYBLxbROhm08sns0ssVfXKln0=; b=XZu9+pWQbTy60PSoHQBwjwbQMrb5r4JmvOsB9uKCfCWtvev3RcGAQV8lvPW3ltvX1E R5UcMS9cEg1j4lDqHhwSBPctGD6+ljgmsZZg7vQnJf+ASoMZlCKBAkl/vqg+zA1I2uRQ CKgN5yukxYU/RL7vL54n4pYNwOlVlL+Cgh8MoMlcLzUveSTAwKDBQZikNCf414IRQev6 HPYQUQDPGCCNMFSlsscQB1S1zDfLoN1yVXsXaf0w9vA8tGTgQsXfuS2vPcror/QnM0VX aXo6S9llVhSQHFgnTaawneCqilaAJybBQfRsAdwity5LvMDMizJH6gDlQDhlupuAgYS7 Z7aw== 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=N7KG5QWQXC0DT5Wy+0SYBLxbROhm08sns0ssVfXKln0=; b=FmLGO6CTlRhW7kxHxoWhAR9klcwYzKTPR+p5i3+mWQpZxfcHaTpqpje5EIk9M6XgY3 xTCrABTC6vielaGfW4XKUfz64MAGSdjdGYGfYR2rR8BbkI4/ZwkUTFMLSb0aOGN3zG2F ClovXEx3algx1hinZ3GgECf9cJgRg0nQserqANueZz2o70KFFsWNd3WGTk7q6rWdvLBM L8jBwI1piA6Yf0oHp49Qgwvg7wsgovFDe7sYfYuB4OBZ8NXm6zWuZSjskpv2nybNDfVp 8DKqKEGANTEpXwocv5bgRWBzsLAYBxgfh4qrufwNyM+AeCGDCsWtHbJDDqPUs0snF6dt 9T/Q== X-Gm-Message-State: AOAM5327tHhtWknBsnK6QSOlL7M85pMpj1FDqur71+mBFxHWp2HSyqzL C4MI/6Y8D/tf6/cd/lTR0bs= X-Google-Smtp-Source: ABdhPJz6IiPHNSVd7i9nrd6Wo9FhX15AQTUgKDWGi6ePstv+AqsYEYYLey0QJ14cXLSvSRME/KMLlg== X-Received: by 2002:a17:902:820a:: with SMTP id x10mr8288876pln.135.1594388710310; Fri, 10 Jul 2020 06:45:10 -0700 (PDT) Received: from vultr.guest ([149.248.10.52]) by smtp.gmail.com with ESMTPSA id 198sm6297363pfb.27.2020.07.10.06.45.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2020 06:45:09 -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 v4 12/17] perf ftrace: add support for tracing option 'irq-info' Date: Fri, 10 Jul 2020 21:43:17 +0800 Message-Id: <20200710134322.15400-13-changbin.du@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200710134322.15400-1-changbin.du@gmail.com> References: <20200710134322.15400-1-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 support to display irq context info for function tracer. To do this, just specify a '--func-opts irq-info' option. Signed-off-by: Changbin Du --- tools/perf/Documentation/perf-ftrace.txt | 1 + tools/perf/builtin-ftrace.c | 21 ++++++++++++++++++++- 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 2e16e1e588d9..e6e9564d6c2e 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -81,6 +81,7 @@ OPTIONS --func-opts:: List of options allowed to set: call-graph - Display kernel stack trace for function tracer. + irq-info - Display irq context info for function tracer. -G:: --graph-funcs=:: diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 179c5da678e3..a5906258c413 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -42,6 +42,7 @@ struct perf_ftrace { unsigned long percpu_buffer_size; bool inherit; int func_stack_trace; + int func_irq_info; int graph_nosleep_time; int graph_noirqs; }; @@ -204,6 +205,7 @@ 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"); + write_tracing_option_file("irq-info", "0"); } static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused) @@ -291,6 +293,17 @@ static int set_tracing_func_stack_trace(struct perf_ftrace *ftrace) return 0; } +static int set_tracing_func_irqinfo(struct perf_ftrace *ftrace) +{ + if (!ftrace->func_irq_info) + return 0; + + if (write_tracing_option_file("irq-info", "1") < 0) + return -1; + + return 0; +} + static int reset_tracing_cpu(void) { struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL); @@ -466,6 +479,11 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv) goto out_reset; } + if (set_tracing_func_irqinfo(ftrace) < 0) { + pr_err("failed to set tracing option irq-info\n"); + goto out_reset; + } + if (set_tracing_filters(ftrace) < 0) { pr_err("failed to set tracing filters\n"); goto out_reset; @@ -656,6 +674,7 @@ static int parse_func_tracer_opts(const struct option *opt, struct perf_ftrace *ftrace = (struct perf_ftrace *) opt->value; struct sublevel_option func_tracer_opts[] = { { .name = "call-graph", .value_ptr = &ftrace->func_stack_trace }, + { .name = "irq-info", .value_ptr = &ftrace->func_irq_info }, { .name = NULL, } }; @@ -723,7 +742,7 @@ int cmd_ftrace(int argc, const char **argv) OPT_CALLBACK('N', "notrace-funcs", &ftrace.notrace, "func", "do not trace given functions", parse_filter_func), OPT_CALLBACK(0, "func-opts", &ftrace, "options", - "function tracer options, available options: call-graph", + "function tracer options, available options: call-graph,irq-info", parse_func_tracer_opts), OPT_CALLBACK('G', "graph-funcs", &ftrace.graph_funcs, "func", "trace given functions using function_graph tracer", -- 2.25.1