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

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Message-ID: <4513bb41-e493-48bb-bd58-f1cc3ea44e5f@kernel.org>
Date: Thu, 8 Jan 2026 11:27:26 -0700
From: Shuah <shuah@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>,
 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 1/7/26 08:18, Steven Rostedt wrote:
> 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.
> 

Yes I can take this through and send this for rc5 or rc6.
But first the following warning needs fixing before I can
apply the patch

WARNING: From:/Signed-off-by: email address mismatch: 'From: Fushuai Wang <fushuai.wang@...ux.dev>' != 'Signed-off-by: Fushuai Wang <wangfushuai@...du.com>'

Fushuai, please send me v3

thanks,
-- Shuah