From nobody Tue Dec 2 02:44:09 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 9F0BD245008; Tue, 18 Nov 2025 07:49:59 +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=1763452199; cv=none; b=ES9QJlvDE+9IvXhfL5+qwLZ7VHHWInI98i2Vn46VWZ2sxwpSSRL3WZnfJJeA1wsXoEAOk6T+vZy/Rh8ZoRv0WD2odBzvHgdoFv45dyUQnKdcM4JlCxB7FJ2s6+MYYHG7YE0i89cVkCVLfU4UoyMot+nowtN0jEhewWIjgVFY0xY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763452199; c=relaxed/simple; bh=1OELAZhh7afwVceGwzfcjHqQq87gMBd1RV2OOhontBY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=BADWU6LZGdVNdvsClc34tdhoqzZZFL86KmJzfkStrV04b28wTR1K7+kwODvI1pDInv+X8VCksCWAiBwUR4mjolH86P240dArxa7qLHg3T6/XzoFqkSdLdIKYMDmazdGqsanPCqEX1/GF/BMzRcEiG891E7ECl1Agv5fxnQDT/U4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eip8WFSO; 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="eip8WFSO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 030B7C2BCB1; Tue, 18 Nov 2025 07:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763452198; bh=1OELAZhh7afwVceGwzfcjHqQq87gMBd1RV2OOhontBY=; h=From:To:Cc:Subject:Date:From; b=eip8WFSOesd37alXAYCl4xugMr3V2UUz4WV9vBbh3ja3crzNMs1pvrE9XLl22QjGu N1zHJFx9N23m6DuVGHRjy00UDFgCeblNaxQsegEKbG7WuAVkuir0R6Hfs0P93EUZOS HUx/6mhCNjUP9YWMZkIJersyKexrp+eoTSC5RSwdx+NKoZ0Iaia/4CfNC/COagN8cB ioqi1HOgBr5DjUA81iHjnyNCHLx8+itUpSPy/9OiFJW/cVhc7YO4m3lMGIiU6bRyt9 c2N+LIUDv8h8KYAWJRMBWcuA29CjZH9PabbpMHn9dP/L3nh3q6CoKr4dw34KXVTC06 QmxjA7wEm/6/g== From: "Masami Hiramatsu (Google)" To: Steven Rostedt Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH] tracing: Show the tracer options in boot-time created instance Date: Tue, 18 Nov 2025 16:49:50 +0900 Message-ID: <176345219055.1127138.4292126981726580037.stgit@mhiramat.tok.corp.google.com> X-Mailer: git-send-email 2.52.0.rc1.455.g30608eb744-goog 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) Since tracer_init_tracefs_work_func() only updates the tracer options for the global_trace, the instances created by the kernel cmdline do not have those options. Fix to update tracer options for those boot-time created instances to show those options. Signed-off-by: Masami Hiramatsu (Google) Fixes: f20a580627f43 ("ftrace: Allow instances to use function tracing") --- kernel/trace/trace.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8ae95800592d..2e87060e1d5a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10903,6 +10903,7 @@ static struct notifier_block trace_module_nb =3D { =20 static __init void tracer_init_tracefs_work_func(struct work_struct *work) { + struct trace_array *tr; =20 event_trace_init(); =20 @@ -10937,7 +10938,8 @@ static __init void tracer_init_tracefs_work_func(st= ruct work_struct *work) =20 create_trace_instances(NULL); =20 - update_tracer_options(&global_trace); + list_for_each_entry(tr, &ftrace_trace_arrays, list) + update_tracer_options(tr); } =20 static __init int tracer_init_tracefs(void)