linux-kernel - Re: [PATCH v2 02/11] cpuidle: Fixup IRQ state

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Date:   Fri, 21 Aug 2020 19:36:43 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org, will@...nel.org,
        npiggin@...il.com, elver@...gle.com, jgross@...e.com,
        paulmck@...nel.org, rostedt@...dmis.org, joel@...lfernandes.org,
        svens@...ux.ibm.com, tglx@...utronix.de
Subject: Re: [PATCH v2 02/11] cpuidle: Fixup IRQ state

On Friday, August 21, 2020 10:47:40 AM CEST Peter Zijlstra wrote:
> Match the pattern elsewhere in this file.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> Tested-by: Marco Elver <elver@...gle.com>

For all patches in the series:

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

> ---
>  drivers/cpuidle/cpuidle.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> --- a/drivers/cpuidle/cpuidle.c
> +++ b/drivers/cpuidle/cpuidle.c
> @@ -153,7 +153,8 @@ static void enter_s2idle_proper(struct c
>  	 */
>  	stop_critical_timings();
>  	drv->states[index].enter_s2idle(dev, drv, index);
> -	WARN_ON(!irqs_disabled());
> +	if (WARN_ON_ONCE(!irqs_disabled()))
> +		local_irq_disable();
>  	/*
>  	 * timekeeping_resume() that will be called by tick_unfreeze() for the
>  	 * first CPU executing it calls functions containing RCU read-side
> 
> 
>