From nobody Fri Dec 19 21:48:02 2025 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 D868B1F5437; Fri, 7 Nov 2025 14:35:06 +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=1762526107; cv=none; b=gQ8wWtc6cShwMhi4CqpTUyrZK/NHaAzzHObMjPhMWEgfdYZ1710jf2c32K11cpHgU8t8JLrDeowxyCr9lN+dwK0csyWOLlDdOfzh5ko10LQ2/Ay67mk7VgR8hj5oKywJuTbcnksVWROsZSPn6FYLuxf5uwWsAgO2ST8GqKwzGWk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762526107; c=relaxed/simple; bh=4WxZ3LELg5mcq0Cf6czbnjewj3p8Wpjhfzv3KyuE0Qs=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=SJxVvLReK+es4FiSM1T4gsKkkEavcfR0dobAwiP00pWUewW8t0wg1Kmw4eAKO/C1QuJVznxtolW7f6VJC9NYQhD9NKt/YpiqnwNVSizo3lfZPfyPOd3+hCZqgldt8meZ+qgypmd9y9E32pVyRwvBUTshzXC9N8iTHN45BLcn4DE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rZ6HY9oW; 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="rZ6HY9oW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85C3EC4CEF7; Fri, 7 Nov 2025 14:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762526106; bh=4WxZ3LELg5mcq0Cf6czbnjewj3p8Wpjhfzv3KyuE0Qs=; h=From:To:Cc:Subject:Date:From; b=rZ6HY9oWMDLs4sKC636BgUJ3shrDAORr4y9nl8IEHEFQUkjYIbl1usP7n5DMkq/yX piXUq9g5Q8BUx1wtNC5Cfc9GTCPBfOOrEk/gpTtqFr3fwSSEY9XLOIimUkgexO74HT vMPS07UJyPSl7y8vopWbM2cTA0ZkPey34HfYrVfTWTC1jNuR4TkmJKnna92hvoTQ5L r6kLfMD8sy7tW2LG5bE37smpRTI+85Av235q9sjcQWk9E3VdFIbISxSaIUQubsnycI MpObhyawtyI9Mys/rqKmROaFpQxa63j0FezQKZtZp8SlAS5QvSJrjhFiqDXQpoKVDr XNXLVClpoPHOQ== From: "Masami Hiramatsu (Google)" To: Steven Rostedt , Shuah Khan Cc: Masami Hiramatsu , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH] selftests: tracing: Add tprobe enable/disable testcase Date: Fri, 7 Nov 2025 23:35:01 +0900 Message-ID: <176252610176.214996.3978515319000806265.stgit@devnote2> X-Mailer: git-send-email 2.43.0 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 2867495dea86 ("tracing: tprobe-events: Register tracepoint when enable tprobe event") caused regression bug and tprobe did not work. To prevent similar problems, add a testcase which enables/disables a tprobe and check the results. Signed-off-by: Masami Hiramatsu (Google) --- .../test.d/dynevent/enable_disable_tprobe.tc | 40 ++++++++++++++++= ++++ 1 file changed, 40 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/enable_d= isable_tprobe.tc diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_= tprobe.tc b/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_t= probe.tc new file mode 100644 index 000000000000..c1f1cafa30f3 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.= tc @@ -0,0 +1,40 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Generic dynamic event - enable/disable tracepoint probe eve= nts +# requires: dynamic_events "t[:[/][]] []"= :README + +echo 0 > events/enable +echo > dynamic_events + +TRACEPOINT=3Dsched_switch +ENABLEFILE=3Devents/tracepoints/myprobe/enable + +:;: "Add tracepoint event on $TRACEPOINT" ;: + +echo "t:myprobe ${TRACEPOINT}" >> dynamic_events + +:;: "Check enable/disable to ensure it works" ;: + +echo 1 > $ENABLEFILE + +grep -q $TRACEPOINT trace + +echo 0 > $ENABLEFILE + +echo > trace + +! grep -q $TRACEPOINT trace + +:;: "Repeat enable/disable to ensure it works" ;: + +echo 1 > $ENABLEFILE + +grep -q $TRACEPOINT trace + +echo 0 > $ENABLEFILE + +echo > trace + +! grep -q $TRACEPOINT trace + +exit 0