linux-kernel - Re: [patch V2 04/38] posix-cpu-timers: Provide quick sample function for itimer

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Message-ID: <20190822121327.GH22020@lenoir>
Date:   Thu, 22 Aug 2019 14:13:28 +0200
From:   Frederic Weisbecker <frederic@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        John Stultz <john.stultz@...aro.org>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>,
        Christoph Hellwig <hch@....de>
Subject: Re: [patch V2 04/38] posix-cpu-timers: Provide quick sample function
 for itimer

On Wed, Aug 21, 2019 at 09:08:51PM +0200, Thomas Gleixner wrote:
> get_itimer() needs a sample of the current thread group cputime. It invokes
> thread_group_cputimer() - which is a misnomer. That function also starts
> eventually the group cputime accouting which is bogus because the
> accounting is already active when a timer is armed.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

Reviewed-by: Frederic Weisbecker <frederic@...nel.org>