linux-kernel - Re: [PATCH v2] selftests/ftrace: Add test to exercize function tracer across cpu hotplug

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Date:   Wed, 13 Dec 2023 10:06:29 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc:     Naveen N Rao <naveen@...nel.org>,
        <linux-kselftest@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: Re: [PATCH v2] selftests/ftrace: Add test to exercize function
 tracer across cpu hotplug

On Wed, 13 Dec 2023 21:54:50 +0900
Masami Hiramatsu (Google) <mhiramat@...nel.org> wrote:

> On Wed, 13 Dec 2023 17:08:02 +0530
> Naveen N Rao <naveen@...nel.org> wrote:
> 
> > Add a test to exercize cpu hotplug with the function tracer active to
> > ensure that sensitive functions in idle path are excluded from being
> > traced. This helps catch issues such as the one fixed by commit
> > 4b3338aaa74d ("powerpc/ftrace: Fix stack teardown in ftrace_no_trace").
> >   
> 
> Looks good to me.
> 
> Acked-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> 
> Thank you,
> 

Thanks Naveen and Masami!

Shuah, can you take this through your tree?

-- Steve