linux-kernel - Re: [ANNOUNCE] v5.14-rc4-rt4

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Message-ID: <20210804122541.741cf858@oasis.local.home>
Date:   Wed, 4 Aug 2021 12:25:41 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Jens Axboe <axboe@...nel.dk>,
        Peter Zijlstra <peterz@...radead.org>,
        Daniel Wagner <wagi@...om.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users@...r.kernel.org
Subject: Re: [ANNOUNCE] v5.14-rc4-rt4

On Wed, 4 Aug 2021 18:22:31 +0200
Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:

> no preemption happens here with NEED_RESCHED set.

But if interrupts were disabled, how would NEED_RESCHED be set? As soon
as you enable interrupts, the interrupt that sets NEED_RESCHED would
trigger the preemption.

-- Steve