linux-kernel - Re: [PATCH 2/2] selftests: tracing: Use mutex

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Message-Id: <20250704150425.a8a82c7768e1c99ee272e585@kernel.org>
Date: Fri, 4 Jul 2025 15:04:25 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Shuah Khan <shuah@...nel.org>, Steven Rostedt <rostedt@...dmis.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 2/2] selftests: tracing: Use mutex_unlock for testing
 glob filter

Shuah,

Can you take this patch (fix) to your tree since this is
a fix for the selftest?

Thank you,

On Thu, 3 Jul 2025 10:30:39 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> On Thu,  3 Jul 2025 13:26:43 +0900
> "Masami Hiramatsu (Google)" <mhiramat@...nel.org> wrote:
> 
> > From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> > 
> > Since commit c5b6ababd21a ("locking/mutex: implement
> > mutex_trylock_nested") makes mutex_trylock() as an inlined
> > function if CONFIG_DEBUG_LOCK_ALLOC=y, we can not use
> > mutex_trylock() for testing the glob filter of ftrace.
> > 
> > Use mutex_unlock instead.
> > 
> > Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> 
> Acked-by: Steven Rostedt (Google) <rostedt@...dmis.org>
> 
> -- Steve


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>