linux-kernel - Re: [PATCH v2] selftests/tracing: Fix test_multiple

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Message-ID: <20260107101846.61c182e0@gandalf.local.home>
Date: Wed, 7 Jan 2026 10:18:46 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Fushuai Wang <fushuai.wang@...ux.dev>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com,
 mhiramat@...nel.org, shuah@...nel.org, wangfushuai@...du.com, Shuah Khan
 <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2] selftests/tracing: Fix test_multiple_writes stall

On Wed,  7 Jan 2026 11:49:14 +0800
Fushuai Wang <fushuai.wang@...ux.dev> wrote:

> > When /sys/kernel/tracing/buffer_size_kb is less than 12KB,
> > the test_multiple_writes test will stall and wait for more
> > input due to insufficient buffer space.
> > 
> > Check current buffer_size_kb value before the test. If it is
> > less than 12KB, it temporarily increase the buffer to 12KB,
> > and restore the original value after the tests are completed.
> > 
> > Fixes: 37f46601383a ("selftests/tracing: Add basic test for trace_marker_raw file")
> > Suggested-by: Steven Rostedt <rostedt@...dmis.org>
> > Signed-off-by: Fushuai Wang <wangfushuai@...du.com>  
> 
> Gentle ping.
> 

Acked-by: Steven Rostedt (Google) <rostedt@...dmis.org>

Shuah,

Care to take this through your tree? It does fix a bug so it likely should
go into the rc releases and not wait for the next merge window.

Thanks,

-- Steve