linux-kernel - [PATCH 0/2] PM: sleep: Rework cpuidle handling during system-wide PM transitions

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Message-ID: <2230995.ElGaqSPkdT@kreacher>
Date:   Fri, 22 Oct 2021 18:02:43 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: [PATCH 0/2] PM: sleep: Rework cpuidle handling during system-wide PM transitions

Hi All,

Currently, cpuidle is paused before the last phase of suspending device
(suspend_noirq), but first it doesn't make sense to pause it for
suspend-to-idle, because suspend-to-idle resumes it anyway later, and
then it need not be paused while suspending devices anyway.

Patch [1/2] removes the pausing and resuming of cpuidle from the suspend-to-idle
path and patch [1/2] combines these operations with the disabling and enabling
of secondary CPUs (which does not take place in the suspend-to-idle path),
respectively.

Thanks!