linux-kernel - [PATCH 0/2] cpuidle optimizations (on top of linux-next)

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Message-ID: <1621492.NI2xz9vt7M@vostro.rjw.lan>
Date:	Sat, 16 Jan 2016 00:53:41 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Linux PM list <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>
Subject: [PATCH 0/2] cpuidle optimizations (on top of linux-next)

Hi,

When I was looking at the cpuidle code after the Sudeeps's problem report,
it occured to me that we had some pointless overhead there, so two
changes to reduce it follow.

[1/2] Make the fallback to to default_idle_call() in call_cpuidle()
      unnecessary and drop it.
[2/2] Make menu_select() avoid checking states that don't need to
      (or even shouldn't) be checked when making the selection.

Thanks,
Rafael