linux-kernel - Re: [PATCH v2 00/37] hrtimer: Provide softirq context hrtimers

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Message-ID: <20171023160814.GG3165@worktop.lehotels.local>
Date:   Mon, 23 Oct 2017 18:08:14 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Anna-Maria Gleixner <anna-maria@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, keescook@...omium.org,
        Christoph Hellwig <hch@....de>,
        John Stultz <john.stultz@...aro.org>
Subject: Re: [PATCH v2 00/37] hrtimer: Provide softirq context hrtimers

On Sun, Oct 22, 2017 at 11:39:38PM +0200, Anna-Maria Gleixner wrote:
> This series implements a new approach by adding SOFT hrtimer mode and
> instead of doing the list shuffle, timers started with this mode are put
> into separate soft expiry hrtimer queues. These queues are evaluated only
> when the hardirq context detects that the first expiring timer in the
> softirq queues has expired. That makes the overhead in the hardirq context
> minimal.

Thanks!

1-29,33: Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>