From patchwork Tue Jun 4 14:41:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 13685469 X-Patchwork-Delegate: bpf@iogearbox.net 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 7F95614A61B; Tue, 4 Jun 2024 14:42:19 +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=1717512139; cv=none; b=QYsLX+38xDFKvZhM8E/piJxbzkVTj759c9YlmQdEQBlRiOiMp+88uI4f1Ee25NuBj3Mp3E1NBHQ0Qt6rwTLd4I5mugqbUuOJXfPJ+RDYS88Eqfw7QBmzexv9BnizFA1I5KUVPW/AME5WNFTfDGJdIOXPj8TQb1yHSI/zRRC2tWU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717512139; c=relaxed/simple; bh=bt/kGDzFunrncc+tGakDqJ1SDIrQ36rHNX8lhail/8g=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=B2I6U5HbB09/Tiv3bL/3lxBop2FjiMSf7lZSGdoRfnyYRPvSYbCbXolb4pjPNDNaHjQlXTLc6HZrq60UYDgZHWzK2B7iXIFVATci2fuL8uhcEnjDw4KRREgXAa5W6HGYPFqw9acxv1qcWWD+y2rz7NlYOadeIT+vmG6Q0eTL0Hw= 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 63B7DC2BBFC; Tue, 4 Jun 2024 14:42:19 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1sEVMg-00000000Z60-1GtP; Tue, 04 Jun 2024 10:42:18 -0400 Message-ID: <20240604144218.160516951@goodmis.org> User-Agent: quilt/0.68 Date: Tue, 04 Jun 2024 10:41:29 -0400 From: Steven Rostedt To: linux-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 Subject: [for-next][PATCH 26/27] selftests/ftrace: Add function_graph tracer to func-filter-pid test References: <20240604144103.293353991@goodmis.org> Precedence: bulk X-Mailing-List: bpf@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. Link: https://lore.kernel.org/linux-trace-kernel/20240603190825.083048115@goodmis.org Cc: Masami Hiramatsu Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Andrew Morton Cc: Alexei Starovoitov Cc: Florent Revest Cc: Martin KaFai Lau Cc: bpf Cc: Sven Schnelle Cc: Alexei Starovoitov Cc: Jiri Olsa Cc: Arnaldo Carvalho de Melo Cc: Daniel Borkmann Cc: Alan Maguire Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Guo Ren Reviewed-by: Masami Hiramatsu (Google) 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