linux-kernel - Re: [PATCH] hrtimer: reset .hres_active and .online at appropriate points

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Message-ID: <878qrbazki.ffs@tglx>
Date: Thu, 16 Jan 2025 10:16:29 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Koichiro Den <koichiro.den@...onical.com>, linux-kernel@...r.kernel.org
Cc: anna-maria@...utronix.de, frederic@...nel.org, peterz@...radead.org
Subject: Re: [PATCH] hrtimer: reset .hres_active and .online at appropriate
 points

On Fri, Dec 20 2024 at 22:44, Koichiro Den wrote:
> Reset these fields at the appropriate points. Ideally, .hres_active
> would be reset in tick_cpu_dying() as underlying clockevent is shut down
> there. However, since these operations occur in the atomic AP section
> with interrupts disabled in any case, this patch resets .hres_active to
> 0 in hrtimers_cpu_dying() for simplicity.

It does not matter where it is reset and from a hrtimer point of view
the dying() callback is the appropriate place.

Thanks,

        tglx