linux-kernel - Re: [PATCH] cpu/hotplug: Abort disabling secondary CPUs if wakeup is pending

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Message-ID: <CAEU1=Pk2HVHApjRkAtL0H1wa6GUejs4af3KodQ8TgJmJ6bh-Wg@mail.gmail.com>
Date:   Tue, 11 Jun 2019 08:18:58 +0530
From:   Pavan Kondeti <pkondeti@...eaurora.org>
To:     Pavankumar Kondeti <pkondeti@...eaurora.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        iri Kosina <jkosina@...e.cz>,
        Mukesh Ojha <mojha@...eaurora.org>, linux-pm@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpu/hotplug: Abort disabling secondary CPUs if wakeup is pending

Hi Rafael/Thomas,

On Mon, Jun 3, 2019 at 10:03 AM Pavankumar Kondeti
<pkondeti@...eaurora.org> wrote:
>
> When "deep" suspend is enabled, all CPUs except the primary CPU
> are hotplugged out. Since CPU hotplug is a costly operation,
> check if we have to abort the suspend in between each CPU
> hotplug. This would improve the system suspend abort latency
> upon detecting a wakeup condition.
>

Please let me know if you have any comments on this patch.

Thanks,
Pavan

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