linux-kernel - Re: [PATCH 1/2] kernel/sofirq: consolidate common code in __tasklet_schedule() + _hi

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Message-ID: <20180216123109.5098b1ca@gandalf.local.home>
Date:   Fri, 16 Feb 2018 12:31:09 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, tglx@...utronix.de,
        Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 1/2] kernel/sofirq: consolidate common code in
 __tasklet_schedule() + _hi_

On Fri, 16 Feb 2018 09:53:03 +0100
Sebastian Andrzej Siewior <bigeasy@...utronix.de> wrote:

> As for the second invocation (tasklet_action_common() part) is always
> invoked in BH-disabled context (even if called from ksoftirqd) so you
> are never preemptible() and can't switch CPUs.
> So I am going to correct this patch as you suggested but I don't see the
> reason to do the same in the second one.

Should we add something like:

	WARN_ON_ONCE(!in_atomic());

?

-- Steve