linux-kernel - Re: [PATCH v2 5/5] ftrace: Use preemption model accessors for trace header printout

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Message-ID: <20211110153618.5a89eb91@gandalf.local.home>
Date:   Wed, 10 Nov 2021 15:36:18 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Valentin Schneider <valentin.schneider@....com>
Cc:     linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kbuild@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Mike Galbraith <efault@....de>, Marco Elver <elver@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH v2 5/5] ftrace: Use preemption model accessors for trace
 header printout

On Wed, 10 Nov 2021 20:24:48 +0000
Valentin Schneider <valentin.schneider@....com> wrote:

> Per PREEMPT_DYNAMIC, checking CONFIG_PREEMPT doesn't tell you the actual
> preemption model of the live kernel. Use the newly-introduced accessors
> instead.
> 
> Signed-off-by: Valentin Schneider <valentin.schneider@....com>
> ---
>  kernel/trace/trace.c | 14 ++++----------
>  1 file changed, 4 insertions(+), 10 deletions(-)

Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

-- Steve