linux-kernel - Re: [PATCH 0/5] Add suspend-to-idle validation for Intel SoCs

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Date:	Tue, 7 Jun 2016 09:46:33 +0200
From:	Pavel Machek <pavel@....cz>
To:	dbasehore@...omium.org
Cc:	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	rjw@...ysocki.net, len.brown@...el.com, tglx@...utronix.de
Subject: Re: [PATCH 0/5] Add suspend-to-idle validation for Intel SoCs

On Wed 2016-06-01 21:33:24, dbasehore@...omium.org wrote:
> From: Derek Basehore <dbasehore@...omium.org>
> 
> This patch set adds support for catching errors when entering freeze
> on Intel Skylake SoCs. Support for this can be added to newer SoCs in
> later patches.
> 
> Verification is done by waking up the CPU once every X (default 10)
> seconds to check the residency of S0ix. This can't be verified before
> attempting to enter S0ix through mwait, so we have to repeatedly
> verify entry into that state. Successfully entering S0ix is no
> guarantee that it will be entered on the next attempt, so we have to
> schedule another check. This has a minimal power impact of <1% of the
> total system power on our systems.

Dunno. Should this be protected with something like CONFIG_TEST_SLEEP?
People probably don't want this for production...

-- 
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