From mboxrd@z Thu Jan 1 00:00:00 1970 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 D17031BEF78; Wed, 29 Jan 2025 14:01:18 +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=1738159278; cv=none; b=f2pGNy6ICg2t8Z7nUMAJuSGztfZMYR9LBEbDRKedse9qb/FDG9qam9IrFUeqkZit3RIqNa+zMxZg0w46sPV+fgWshfu0MFrHdHwUaxfL+HMmJQj+qA9q/6/F4ph3rBQcr6Vn8Oj1wrbC3xcF7pLu8hl0AKx3BLd/CFSsDJLP5dI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738159278; c=relaxed/simple; bh=+H3jVJd1lzeG60nfMsZcKWTgtOwYHsE7fkM3OZfrl4U=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GHlbmAfc8TQ5m84/fPxcU4pAWyS6KaHoMwq4AoBCM8lECoZ3kKFvn10F1g2F8c0c68KaW4/rYn3Ow6uLh3WjLBVonYGAuzvoGKfKMFAeC3MlrbTSZ2DsvpvK6NLPsVkw7PCDg7y+Rlsv6+NOhvFTZLWjDa0TfjyqRJestY3dVlY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kq0x4nwp; 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="kq0x4nwp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D8C8C4CEE1; Wed, 29 Jan 2025 14:01:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738159278; bh=+H3jVJd1lzeG60nfMsZcKWTgtOwYHsE7fkM3OZfrl4U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kq0x4nwpQsdH2LVCGgYO8vORpLRe0Cqoe3H0sEvpWKRJlWZ5k6gW3cHKvd5UblGAU o2dG/H5WhEBXXc4fO/2IjqHfLaZEU3TceIbYF/vtshjtgsde/2mi/iNri/Ut7SpnUT zw7+yqAfsUa1/cWv8BwoFCPzWM3fr2ExqXRaJZUp8QtIXAXPkMlRhG8Reywp+iHBy8 a3zt9FEzyDqKVfcWshZBwkyr1uckBvGqwbNf6GSJ9P7IZzRC9bHOix93B7jica0j5G GOopbGYsddt7o0LyizALfpF6SlUI5mXbSHZvzqFcXjP8L0P13RRCYaXQuIUWm54Kaz R3t0bfWpdWeOg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tomas Glozar , John Kacur , Luis Goncalves , Gabriele Monaco , Steven Rostedt , Sasha Levin , bristot@kernel.org, ezulian@redhat.com, costa.shul@redhat.com, linux-trace-kernel@vger.kernel.org Subject: [PATCH AUTOSEL 6.13 4/4] rtla/timerlat_top: Abort event processing on second signal Date: Wed, 29 Jan 2025 07:57:23 -0500 Message-Id: <20250129125724.1272534-4-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250129125724.1272534-1-sashal@kernel.org> References: <20250129125724.1272534-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.13 Content-Transfer-Encoding: 8bit From: Tomas Glozar [ Upstream commit 80967b354a76b360943af384c10d807d98bea5c4 ] If either SIGINT is received twice, or after a SIGALRM (that is, after timerlat was supposed to stop), abort processing events currently left in the tracefs buffer and exit immediately. This allows the user to exit rtla without waiting for processing all events, should that take longer than wanted, at the cost of not processing all samples. Cc: John Kacur Cc: Luis Goncalves Cc: Gabriele Monaco Link: https://lore.kernel.org/20250116144931.649593-6-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) Signed-off-by: Sasha Levin --- tools/tracing/rtla/src/timerlat_top.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index 059b468981e4d..10254176e8df8 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -902,6 +902,14 @@ static struct osnoise_tool static int stop_tracing; static void stop_top(int sig) { + if (stop_tracing) { + /* + * Stop requested twice in a row; abort event processing and + * exit immediately + */ + tracefs_iterate_stop(top_inst->inst); + return; + } stop_tracing = 1; } -- 2.39.5