linux-kernel - Re: [PATCH] selftests/tracing: Add basic test for trace_marker

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Message-ID: <20251103121005.6399baf3@gandalf.local.home>
Date: Mon, 3 Nov 2025 12:10:05 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Shuah Khan <skhan@...uxfoundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux Trace Kernel
 <linux-trace-kernel@...r.kernel.org>, linux-kselftest@...r.kernel.org,
 Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Linus Torvalds
 <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] selftests/tracing: Add basic test for trace_marker_raw
 file

Masami,

  Ping!

-- Steve


On Tue, 14 Oct 2025 16:14:03 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> Shuah,
> 
> After Masami gives an ack, could you take this through your tree.
> 
> I don't think it's urgent, but I want to make sure it gets upstream.
> 
> -- Steve
> 
> 
> On Tue, 14 Oct 2025 14:51:49 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > From: Steven Rostedt <rostedt@...dmis.org>
> > 
> > Commit 64cf7d058a00 ("tracing: Have trace_marker use per-cpu data to read
> > user space") made an update that fixed both trace_marker and
> > trace_marker_raw. But the small difference made to trace_marker_raw had a
> > blatant bug in it that any basic testing would have uncovered.
> > Unfortunately, the self tests have tests for trace_marker but nothing for
> > trace_marker_raw which allowed the bug to get upstream.
> > 
> > Add basic selftests to test trace_marker_raw so that this doesn't happen
> > again.
> > 
> > Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
> >