linux-kernel - Re: [PATCH 1/3] riscv: ftrace: Fixup panic by disabling preemption

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Message-ID: <CAJF2gTT-TOdoGuFdbR8Xwmfur-LNOCUq_sThr9ZpJeMKxudH1A@mail.gmail.com>
Date:   Sat, 17 Sep 2022 18:46:24 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Andy Chiu <andy.chiu@...ive.com>
Cc:     arnd@...db.de, palmer@...osinc.com, rostedt@...dmis.org,
        greentime.hu@...ive.com, zong.li@...ive.com, jrtc27@...c27.com,
        mingo@...hat.com, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 1/3] riscv: ftrace: Fixup panic by disabling preemption

Thanks! I would add your Signed-off-by: Andy Chiu
<andy.chiu@...ive.com> as the first author, next.

On Sat, Sep 17, 2022 at 9:32 AM Andy Chiu <andy.chiu@...ive.com> wrote:
>
> Yes, by disabling preemption and ensuring all sub-functions called by
> the busy waiting loop of stop_machine, which happens to be true on
> non-preemptive kernels, solve the problem from the original
> implementation.
>
> Andy Chiu <andy.chiu@...ive.com>



-- 
Best Regards
 Guo Ren