From: Len Brown <lenb@kernel.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: linux-pm@lists.linux-foundation.org, stable@kernel.org
Subject: Re: [stable] [PATCH 1/2 2.6.37.stable] intel_idle: disable NHM/WSM HW C-state auto-demotion
Date: Fri, 08 Apr 2011 12:14:39 -0400 (EDT) [thread overview]
Message-ID: <alpine.LFD.2.02.1104081207040.27120@x980> (raw)
In-Reply-To: <20110408131645.GB18525@atrey.karlin.mff.cuni.cz>
> Why is it stable material? Seems like small power optimalization to me...
Before this patch, an offline CPU could prevent
package-wide C-states. There is a significant
power difference between being able to enter
a package-wide C-state vs. not.
While processor offline is not used by everybody,
some products use it routinely. Indeed, MRST
simply can not ship without this patch.
thanks,
Len Brown, Intel Open Source Technology Center
next prev parent reply other threads:[~2011-04-08 16:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-23 2:24 [PATCH 1/2 2.6.37.stable] intel_idle: disable NHM/WSM HW C-state auto-demotion Len Brown
2011-03-23 2:26 ` [PATCH 2/2 2.6.37.stable] intel_idle: disable Atom/Lincroft " Len Brown
2011-03-23 22:55 ` [stable] " Greg KH
2011-03-23 22:54 ` [stable] [PATCH 1/2 2.6.37.stable] intel_idle: disable NHM/WSM " Greg KH
[not found] ` <20110323225420.GE27334@kroah.com>
2011-03-24 2:53 ` Len Brown
2011-03-24 3:39 ` Greg KH
2011-04-08 13:16 ` Pavel Machek
2011-04-08 16:14 ` Len Brown [this message]
2011-04-08 13:16 ` Pavel Machek
2011-04-08 22:31 ` Len Brown
2011-04-15 16:25 ` Pavel Machek
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