linux-kernel - Re: [patch 03/44] posix-timer: Use a callback for cancel synchronization

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Date:   Tue, 20 Aug 2019 15:59:43 +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>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>
Subject: Re: [patch 03/44] posix-timer: Use a callback for cancel
 synchronization

On Mon, Aug 19, 2019 at 04:31:44PM +0200, Thomas Gleixner wrote:
> -static struct k_itimer *timer_wait_running(struct k_itimer *timer,
> -					   unsigned long *flags)
> -{
> -	timer_t timer_id = READ_ONCE(timer->it_id);
> +	if (!WARN_ON_ONCE(kc->timer_wait_running))
> +		kc->timer_wait_running(timer);

With the fix after Christoph pinpoint:

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