linux-kernel - Re: [patch 2/8] hrtimer: Force clock_was_set() handling for the HIGHRES=n, NOHZ=y case

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Message-ID: <YJvtVD/SotLoZU/U@hirez.programming.kicks-ass.net>
Date:   Wed, 12 May 2021 16:59:32 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Peter Xu <peterx@...hat.com>,
        Nitesh Narayan Lal <nitesh@...hat.com>,
        Alex Belits <abelits@...vell.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        John Stultz <john.stultz@...aro.org>
Subject: Re: [patch 2/8] hrtimer: Force clock_was_set() handling for the
 HIGHRES=n, NOHZ=y case

On Tue, Apr 27, 2021 at 10:25:39AM +0200, Thomas Gleixner wrote:
>  void clock_was_set(void)
>  {
> +	if (!hrtimer_hres_active() && !tick_nohz_active)
> +		goto out_timerfd;
> +
>  	/* Retrigger the CPU local events everywhere */
>  	on_each_cpu(retrigger_next_event, NULL, 1);
> +
> +out_timerfd:
>  	timerfd_clock_was_set();
>  }

Isn't that simpler when written like:

	if (hrtimer_hres_active() || tick_nohz_active())
		on_each_cpu(retrigger_next_event, NULL, 1);

	timerfd_clock_was_set();

?