linux-kernel - Re: [PATCH v6 19/21] timer: Implement the hierarchical pull model

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Message-ID: <20230511165641.GNlGBnIT@linutronix.de>
Date:   Thu, 11 May 2023 18:56:41 +0200
From:   Sebastian Siewior <bigeasy@...utronix.de>
To:     Anna-Maria Behnsen <anna-maria@...utronix.de>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        John Stultz <jstultz@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Eric Dumazet <edumazet@...gle.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Arjan van de Ven <arjan@...radead.org>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Rik van Riel <riel@...riel.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        Lukasz Luba <lukasz.luba@....com>,
        "Gautham R . Shenoy" <gautham.shenoy@....com>
Subject: Re: [PATCH v6 19/21] timer: Implement the hierarchical pull model

On 2023-05-10 09:28:15 [+0200], Anna-Maria Behnsen wrote:
> diff --git a/kernel/time/timer.c b/kernel/time/timer.c
> --- a/kernel/time/timer.c
> +++ b/kernel/time/timer.c
> @@ -2240,6 +2278,15 @@ static void run_timer_base(int index)
>  	__run_timer_base(base);
>  }
>  
> +#ifdef CONFIG_SMP
 && CONFIG_NO_HZ_COMMON

> +void timer_expire_remote(unsigned int cpu)
> +{
> +	struct timer_base *base = per_cpu_ptr(&timer_bases[BASE_GLOBAL], cpu);
> +
> +	__run_timer_base(base);
> +}
> +#endif
> +
>  /*
>   * This function runs timers and the timer-tq in bottom half context.
>   */

Sebastian