From nobody Mon Dec 1 22:03:59 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 548C822A4F8 for ; Fri, 28 Nov 2025 01:23:22 +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=1764293002; cv=none; b=NWMrebr5SnXE79x9nrBEZ7X7tF5iDC5DE3D6XBxTJ6HZCu35kt0bY+v20LkxnptA743eks+YuXip3TwrnLjeQVU2EQX23FcOt5usyZcu0/urbzgbSTZW7tzC+owOaLUUNWolRatUQtBiarHAwcNvyqWrhH6yw0eOS5JePr3n9nU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764293002; c=relaxed/simple; bh=V9z5cSiv89vmqvw/MPmNmoWfCWGSzhq6WDjN5J0X5wc=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=muPf/UoAvJRz6fY0oFmIC66xUGvXM1RO2QfugMNw5v0nPeKl2JsgXESJQcwVCZsQNbRUqIvWC9h/uMQUaYdn/NTK61NipWG0RpYNh4v02I+X1JlHECbDTpSEqnEV7H5gG3vY7jHBCQoK/VYHMF9AH4iPCqjhooab6k9VOVU7tgQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MgB8smyB; 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="MgB8smyB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF293C113D0; Fri, 28 Nov 2025 01:23:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764293001; bh=V9z5cSiv89vmqvw/MPmNmoWfCWGSzhq6WDjN5J0X5wc=; h=Date:From:To:Cc:Subject:References:From; b=MgB8smyBcvVg+XK8UjfiVzUhyjavvGZmTpS5MHWevIuaWOHlw/vhdc4tZr1aX8uLn ZdeysVMlo6ydF02MZCeL8nUYyv7JEaTgYskX2cgM8r01YNBzP6UecRuZ8kZAooVJBW a15Jeb3CXskI8mR2AYc+WMeYztpM80VEboBH+clTrk4SDV2K2jMBaXkefDoyfTH19X cT/4wyM+F2kvEp0NWzzGo5LzN7FR4kMUuYJkibvKgunKDLjmYnRtkhcYe487+F8LOT qMQ0oEgs4c2+WAMWM48/vWFirRai/xnj0YprtpYLbpaQWRckgmXrthQKSbIcMXYcu0 elNEQ39pn9sjQ== Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1vOnDX-00000006gfH-2c6D; Thu, 27 Nov 2025 20:24:11 -0500 Message-ID: <20251128012411.471594850@kernel.org> User-Agent: quilt/0.68 Date: Thu, 27 Nov 2025 20:23:35 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton Subject: [for-next][PATCH 04/13] tracing: Show the tracer options in boot-time created instance References: <20251128012331.307010654@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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. Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Andrew Morton Link: https://patch.msgid.link/176354112555.2356172.3989277078358802353.stg= it@mhiramat.tok.corp.google.com Fixes: 428add559b69 ("tracing: Have tracer option be instance specific") Signed-off-by: Masami Hiramatsu (Google) Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 59cd4ed8af6d..032bdedca5d9 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10228,11 +10228,14 @@ static __init int __update_tracer_options(struct = trace_array *tr) return ret; } =20 -static __init void update_tracer_options(struct trace_array *tr) +static __init void update_tracer_options(void) { + struct trace_array *tr; + guard(mutex)(&trace_types_lock); tracer_options_updated =3D true; - __update_tracer_options(tr); + list_for_each_entry(tr, &ftrace_trace_arrays, list) + __update_tracer_options(tr); } =20 /* Must have trace_types_lock held */ @@ -10934,7 +10937,7 @@ static __init void tracer_init_tracefs_work_func(st= ruct work_struct *work) =20 create_trace_instances(NULL); =20 - update_tracer_options(&global_trace); + update_tracer_options(); } =20 static __init int tracer_init_tracefs(void) --=20 2.51.0