From nobody Fri Feb 13 07:26:23 2026 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 23AA9133993; Fri, 31 May 2024 09:43:41 +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=1717148622; cv=none; b=n3l+ffv4D9fs9LDZ3OxE7046s+82LaIBMA2f1cxiIHapgeEI2CRR9KEujRp2SA974N+ajTEJ6tNxfzYkVkpQZyUx89Uj/f9GrVbStyQe2Iz7LplS5IOUXJjWc+ckBFwCk/ML9XBVooWZGmR9913JwN+7vRWTYpLcpOZayR0M3Z8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717148622; c=relaxed/simple; bh=KIRMeRLfAg2SfzPVmF2jfjZK9BOA5aUG46aIO9jkl5o=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=ikCayL9KJ0WUWotOIleaxnO4GolOfUFtqdXUc2k11Zled3KH+WaUSXTSzPFWpx1mLln4Kpcid9IuDD2bE7K75j4JyzkSGEN/IE9h/mH2v+uwM9lI/PKm2ez9Rm3ZY+k9PMUPfKCXHtYi6Sl9KLJD5cD8DRLooxJwqdJOkvoDEu4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RciYkpdX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RciYkpdX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D226C116B1; Fri, 31 May 2024 09:43:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717148621; bh=KIRMeRLfAg2SfzPVmF2jfjZK9BOA5aUG46aIO9jkl5o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RciYkpdXpJWT8QaHFwbj1Bh82LBXeCOws7iQk1BBlY5vhqpXkNIxnO9Fq7XI/FPU6 vShzrLPHJ+6E88TEMoA69hJhGQ0BFgpQTLE7hnWS5ktoD0dU8NPvBi9wH53e3j4uG8 IX1grK6gn6heXUxnlA5Lo/lJa3iFXdwVh4W4ZjhCynS0j2t8z5SmjdxSby2d3Sszvm 0BvZ7mNoXzNy2sbJrx7S6TJNwoMHFuW5FJPq4aWzc53f44bnyECT9/aCcjWhDJk0dO 0ChA6G8XozeDGgGvZP6glJP2vXWXvMNHibdLHL/X/J6JTHrhOQAVPyR/TAEUEF0AcI ZEk3EA6oeTF6A== From: "Masami Hiramatsu (Google)" To: Steven Rostedt , Shuah Khan Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, mhiramat@kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH 1/2] selftests/tracing: Fix event filter test to retry up to 10 times Date: Fri, 31 May 2024 18:43:37 +0900 Message-Id: <171714861780.198407.16488694516653649947.stgit@devnote2> X-Mailer: git-send-email 2.34.1 In-Reply-To: <171714860864.198407.18416314586430149538.stgit@devnote2> References: <171714860864.198407.18416314586430149538.stgit@devnote2> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Masami Hiramatsu (Google) Commit eb50d0f250e9 ("selftests/ftrace: Choose target function for filter test from samples") choose the target function from samples, but sometimes this test failes randomly because the target function does not hit at the next time. So retry getting samples up to 10 times. Fixes: eb50d0f250e9 ("selftests/ftrace: Choose target function for filter t= est from samples") Signed-off-by: Masami Hiramatsu (Google) --- .../ftrace/test.d/filter/event-filter-function.tc | 20 ++++++++++++++++= +++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/ftrace/test.d/filter/event-filter-func= tion.tc b/tools/testing/selftests/ftrace/test.d/filter/event-filter-functio= n.tc index 3f74c09c56b6..118247b8dd84 100644 --- a/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc +++ b/tools/testing/selftests/ftrace/test.d/filter/event-filter-function.tc @@ -10,7 +10,6 @@ fail() { #msg } =20 sample_events() { - echo > trace echo 1 > events/kmem/kmem_cache_free/enable echo 1 > tracing_on ls > /dev/null @@ -22,6 +21,7 @@ echo 0 > tracing_on echo 0 > events/enable =20 echo "Get the most frequently calling function" +echo > trace sample_events =20 target_func=3D`cat trace | grep -o 'call_site=3D\([^+]*\)' | sed 's/call_s= ite=3D//' | sort | uniq -c | sort | tail -n 1 | sed 's/^[ 0-9]*//'` @@ -32,7 +32,16 @@ echo > trace =20 echo "Test event filter function name" echo "call_site.function =3D=3D $target_func" > events/kmem/kmem_cache_fre= e/filter + +sample_events +max_retry=3D10 +while [ `grep kmem_cache_free trace| wc -l` -eq 0 ]; do sample_events +max_retry=3D$((max_retry - 1)) +if [ $max_retry -eq 0 ]; then + exit_fail +fi +done =20 hitcnt=3D`grep kmem_cache_free trace| grep $target_func | wc -l` misscnt=3D`grep kmem_cache_free trace| grep -v $target_func | wc -l` @@ -49,7 +58,16 @@ address=3D`grep " ${target_func}\$" /proc/kallsyms | cut= -d' ' -f1` =20 echo "Test event filter function address" echo "call_site.function =3D=3D 0x$address" > events/kmem/kmem_cache_free/= filter +echo > trace +sample_events +max_retry=3D10 +while [ `grep kmem_cache_free trace| wc -l` -eq 0 ]; do sample_events +max_retry=3D$((max_retry - 1)) +if [ $max_retry -eq 0 ]; then + exit_fail +fi +done =20 hitcnt=3D`grep kmem_cache_free trace| grep $target_func | wc -l` misscnt=3D`grep kmem_cache_free trace| grep -v $target_func | wc -l`