linux-kernel - Re: [patch V3 0/6] softirq: Add RT specific softirq accounting

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Message-ID: <YEeBMgdyHV/nsjjk@hirez.programming.kicks-ass.net>
Date:   Tue, 9 Mar 2021 15:07:46 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Paul McKenney <paulmck@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Frederic Weisbecker <frederic@...nel.org>
Subject: Re: [patch V3 0/6] softirq: Add RT specific softirq accounting

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.

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>