From: "Paul E. McKenney" <paulmck@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>
Subject: Re: [patch V3 0/6] softirq: Add RT specific softirq accounting
Date: Tue, 9 Mar 2021 13:32:29 -0800 [thread overview]
Message-ID: <20210309213229.GT2696@paulmck-ThinkPad-P72> (raw)
In-Reply-To: <20210309085552.815026890@linutronix.de>
On Tue, Mar 09, 2021 at 09:55:52AM +0100, Thomas Gleixner wrote:
> RT runs softirq processing always in thread context and it requires that
> both the softirq execution and the BH disabled sections are preemptible.
>
> This is achieved by serialization through per CPU local locks and
> substituting a few parts of the existing softirq processing code with
> helper functions.
>
> The series applies on top of
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git tasklet-2021-03-09
>
> and is completely available from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git softirq
>
> Changes to V2 which can be found here:
>
> https://lore.kernel.org/r/20201204170151.960336698@linutronix.de
>
> - Split the tasklet changes out (seperate submission)
>
> - Rebase it on the tasklet series (no further changes)
Passes modest rcutorture testing, and I do like the "NOHZ tick-stop
error" maybe going away! That error is rare enough that it will take
some time to be reasonably certain. In the meantime:
Tested-by: Paul E. McKenney <paulmck@kernel.org>
prev parent reply other threads:[~2021-03-09 21:33 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 8:55 [patch V3 0/6] softirq: Add RT specific softirq accounting Thomas Gleixner
2021-03-09 8:55 ` [patch V3 1/6] " Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:55 ` [patch V3 2/6] irqtime: Make accounting correct on RT Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:55 ` [patch V3 3/6] softirq: Move various protections into inline helpers Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:55 ` [patch V3 4/6] softirq: Make softirq control and processing RT aware Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:55 ` [patch V3 5/6] tick/sched: Prevent false positive softirq pending warnings on RT Thomas Gleixner
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 8:55 ` [patch V3 6/6] rcu: Prevent false positive softirq warning " Thomas Gleixner
2021-03-09 13:06 ` Frederic Weisbecker
2021-03-17 15:48 ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-03-09 14:07 ` [patch V3 0/6] softirq: Add RT specific softirq accounting Peter Zijlstra
2021-03-09 21:32 ` Paul E. McKenney [this message]
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