linux-kernel - [PATCH v1 0/5] cpuidle: teo: Rework the idle state selection logic

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Message-ID: <1867445.PYKUYFuaPT@kreacher>
Date:   Wed, 02 Jun 2021 20:14:20 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 0/5] cpuidle: teo: Rework the idle state selection logic

Hi All,

This series of patches addresses some theoretical shortcoming in the
TEO (Timer Events Oriented) cpuidle governor by reworking its idle
state selection logic to some extent.

Patches [1-2/5] are introductory cleanups and the substantial changes are
made in patches [3-4/5] (please refer to the changelogs of these two
patches for details).  The last patch only deals with documentation.

Even though this work is mostly based on theoretical considerations, it
shows a measurable reduction of the number of cases in which the shallowest
idle state is selected while it would be more beneficial to select a deeper
one or the deepest idle state is selected while it would be more beneficial to
select a shallower one, which should be a noticeable improvement.

Thanks!