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

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Message-ID: <CABgGipWdm+-pOrj-ROR8fsVO7JEr4m64z7+zNW1_NszW74e5SA@mail.gmail.com>
Date:   Sat, 17 Sep 2022 02:32:01 +0100
From:   Andy Chiu <andy.chiu@...ive.com>
To:     guoren@...nel.org
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

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>