From patchwork Sun Jun 2 03:38:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 13682650 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45AAE4086A; Sun, 2 Jun 2024 03:37:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717299448; cv=none; b=b5lnbb7tLNE9h8dyX3D5nBVTXP0zSerySxDMPRhseNaVD+2R0lseYUWAmJE0pdQmcgO8YY/84RqicVW5B6pnTBb1WSWtf3sz63J4xeK4O0O/dCePbByjHjjM80ByMdEOxtXePcrQkMuVk/3CHH0e8PyfR6QkGoVXf/a6BOp6KGI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717299448; c=relaxed/simple; bh=SitV4QfbSbiGZH0OuJ+lv+tss/ApiEzmsvTb29VB5DM=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=GgK8p0PkuS3wUvqR4VYV+B/HFgri2/QutjOmqv36BIg4xIFKpuP3zUUyIeLc0BoPejiymc6Qkw9LPIJD1Ud/IHBE6vtrTor3wsQvUTCLMNpUiHAIwyF6CISsiVgdIGIUVKZ8vty6ZEimMMEGZSXJ6ggX7NCK8zzXl4PV852C79c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BCECC4AF0D; Sun, 2 Jun 2024 03:37:28 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1sDc3H-000000094Vx-1xgM; Sat, 01 Jun 2024 23:38:35 -0400 Message-ID: <20240602033835.323438089@goodmis.org> User-Agent: quilt/0.68 Date: Sat, 01 Jun 2024 23:38:10 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Alexei Starovoitov , Florent Revest , Martin KaFai Lau , bpf , Sven Schnelle , Alexei Starovoitov , Jiri Olsa , Arnaldo Carvalho de Melo , Daniel Borkmann , Alan Maguire , Peter Zijlstra , Thomas Gleixner , Guo Ren , linux-kselftest@vger.kernel.org Subject: [PATCH v2 26/27] selftests/ftrace: Add function_graph tracer to func-filter-pid test References: <20240602033744.563858532@goodmis.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Steven Rostedt (Google)" The function tracer is tested to see if pid filtering works. Add a test to test function_graph tracer as well, but only if the function_graph tracer is enabled for the top level or instance. Cc: linux-kselftest@vger.kernel.org Signed-off-by: Steven Rostedt (Google) --- .../ftrace/test.d/ftrace/func-filter-pid.tc | 27 +++++++++++++++---- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc index 2f7211254529..c6fc9d31a496 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc @@ -14,6 +14,11 @@ if [ ! -f options/function-fork ]; then echo "no option for function-fork found. Option will not be tested." fi +if [ ! -f options/funcgraph-proc ]; then + do_funcgraph_proc=0 + echo "no option for function-fork found. Option will not be tested." +fi + read PID _ < /proc/self/stat if [ $do_function_fork -eq 1 ]; then @@ -21,12 +26,18 @@ if [ $do_function_fork -eq 1 ]; then orig_value=`grep function-fork trace_options` fi +if [ $do_funcgraph_proc -eq 1 ]; then + orig_value2=`cat options/funcgraph-proc` +fi + do_reset() { - if [ $do_function_fork -eq 0 ]; then - return + if [ $do_function_fork -eq 1 ]; then + echo $orig_value > trace_options fi - echo $orig_value > trace_options + if [ $do_funcgraph_proc -eq 1 ]; then + echo $orig_value2 > options/funcgraph-proc + fi } fail() { # msg @@ -36,13 +47,15 @@ fail() { # msg } do_test() { + TRACER=$1 + disable_tracing echo do_execve* > set_ftrace_filter echo $FUNCTION_FORK >> set_ftrace_filter echo $PID > set_ftrace_pid - echo function > current_tracer + echo $TRACER > current_tracer if [ $do_function_fork -eq 1 ]; then # don't allow children to be traced @@ -82,7 +95,11 @@ do_test() { fi } -do_test +do_test function +if grep -s function_graph available_tracers; then + do_test function_graph +fi + do_reset exit 0 From patchwork Sun Jun 2 03:38:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 13682651 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CAAB944376; Sun, 2 Jun 2024 03:37:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717299448; cv=none; b=F8WJJH+j89dDlJEYk9W02UK1GPsCXpXYsErR+tyG5zEQREdAGToLGAMh0zcMvoY/N4SFfAVyD4eQqUkcLRbgWTMkgWO5IBdlHIATsDzv6UUPKZerVYH43EekbUfTZXSevq6gfPpaJnrDlNSSJv5Xc7qJevHzsCdIuc0TgDt2URU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717299448; c=relaxed/simple; bh=IBvQ1EjeHUmg4YeF3oXh/rA5/gT95qKmM3/sG7PAKSE=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=aX3V3RCOSHOG9zZKpgXalzi/fhG7YjCwUTFXdHCGxK5mTlivU/zAIjB3mak8S60eM6apKpKA1H3wPFfYUaWUaMqRcRagRBPsWwva+OrXQE4yfeHsOHuI7XoyVNsMTFi7BZNMQ6URQ7m08za4zbUumm+m8FG9/f8cSjrcnhS3mGA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 545C6C4AF09; Sun, 2 Jun 2024 03:37:28 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1sDc3H-000000094WR-2fw7; Sat, 01 Jun 2024 23:38:35 -0400 Message-ID: <20240602033835.489585837@goodmis.org> User-Agent: quilt/0.68 Date: Sat, 01 Jun 2024 23:38:11 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Alexei Starovoitov , Florent Revest , Martin KaFai Lau , bpf , Sven Schnelle , Alexei Starovoitov , Jiri Olsa , Arnaldo Carvalho de Melo , Daniel Borkmann , Alan Maguire , Peter Zijlstra , Thomas Gleixner , Guo Ren , linux-kselftest@vger.kernel.org Subject: [PATCH v2 27/27] selftests/ftrace: Add fgraph-multi.tc test References: <20240602033744.563858532@goodmis.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Steven Rostedt (Google)" Add a test that creates 3 instances and enables function_graph tracer in each as well as the top instance, where each will enable a filter (but one that traces all functions) and check that they are filtering properly. Cc: linux-kselftest@vger.kernel.org Signed-off-by: Steven Rostedt (Google) --- .../ftrace/test.d/ftrace/fgraph-multi.tc | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi.tc new file mode 100644 index 000000000000..ff88f97e41fb --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-multi.tc @@ -0,0 +1,103 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function graph filters +# requires: set_ftrace_filter function_graph:tracer + +# Make sure that function graph filtering works + +INSTANCE1="instances/test1_$$" +INSTANCE2="instances/test2_$$" +INSTANCE3="instances/test3_$$" + +WD=`pwd` + +do_reset() { + cd $WD + if [ -d $INSTANCE1 ]; then + echo nop > $INSTANCE1/current_tracer + rmdir $INSTANCE1 + fi + if [ -d $INSTANCE2 ]; then + echo nop > $INSTANCE2/current_tracer + rmdir $INSTANCE2 + fi + if [ -d $INSTANCE3 ]; then + echo nop > $INSTANCE3/current_tracer + rmdir $INSTANCE3 + fi +} + +mkdir $INSTANCE1 +if ! grep -q function_graph $INSTANCE1/available_tracers; then + echo "function_graph not allowed with instances" + rmdir $INSTANCE1 + exit_unsupported +fi + +mkdir $INSTANCE2 +mkdir $INSTANCE3 + +fail() { # msg + do_reset + echo $1 + exit_fail +} + +disable_tracing +clear_trace + +do_test() { + REGEX=$1 + TEST=$2 + + # filter something, schedule is always good + if ! echo "$REGEX" > set_ftrace_filter; then + fail "can not enable filter $REGEX" + fi + + echo > trace + echo function_graph > current_tracer + enable_tracing + sleep 1 + # search for functions (has "{" or ";" on the line) + echo 0 > tracing_on + count=`cat trace | grep -v '^#' | grep -e '{' -e ';' | grep -v "$TEST" | wc -l` + echo 1 > tracing_on + if [ $count -ne 0 ]; then + fail "Graph filtering not working by itself against $TEST?" + fi + + # Make sure we did find something + echo 0 > tracing_on + count=`cat trace | grep -v '^#' | grep -e '{' -e ';' | grep "$TEST" | wc -l` + echo 1 > tracing_on + if [ $count -eq 0 ]; then + fail "No traces found with $TEST?" + fi +} + +do_test '*sched*' 'sched' +cd $INSTANCE1 +do_test '*lock*' 'lock' +cd $WD +cd $INSTANCE2 +do_test '*rcu*' 'rcu' +cd $WD +cd $INSTANCE3 +echo function_graph > current_tracer + +sleep 1 +count=`cat trace | grep -v '^#' | grep -e '{' -e ';' | grep "$TEST" | wc -l` +if [ $count -eq 0 ]; then + fail "No traces found with all tracing?" +fi + +cd $WD +echo nop > current_tracer +echo nop > $INSTANCE1/current_tracer +echo nop > $INSTANCE2/current_tracer +echo nop > $INSTANCE3/current_tracer + +do_reset + +exit 0