linux-kernel - [PATCH v3 0/3] cpuidle: teo: Avoid stopping scheduler tick too often

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Message-ID: <4515817.LvFx2qVVIh@kreacher>
Date:   Mon, 31 Jul 2023 20:49:33 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Anna-Maria Behnsen <anna-maria@...utronix.de>,
        Frederic Weisbecker <frederic@...nel.org>,
        Kajetan Puchalski <kajetan.puchalski@....com>
Subject: [PATCH v3 0/3] cpuidle: teo: Avoid stopping scheduler tick too often

Hi Folks,

Patch [1/3] in this series is a v3 of this patch posted last week:

https://lore.kernel.org/linux-pm/4506480.LvFx2qVVIh@kreacher/

Patch [2/3] (this is the second version of it) addresses some bail out paths
in teo_select() in which the scheduler tick may be stopped unnecessarily too.

Patch [3/3] replaces a structure field with a local variable (while at it)
and it is the same as its previous version.

According to this message:

https://lore.kernel.org/linux-pm/CAJZ5v0jJxHj65r2HXBTd3wfbZtsg=_StzwO1kA5STDnaPe_dWA@mail.gmail.com/

this series significantly reduces the number of cases in which the governor
requests stopping the tick when the selected idle state is shallow, which is
incorrect.

Thanks!