From: Len Brown Date: Wed, 19 Jan 2011 01:48:27 +0000 (-0500) Subject: intel_idle: disable NHM/WSM HW C-state auto-demotion X-Git-Tag: v2.6.38-rc8~41^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14796fca2bd22acc73dd0887248d003b0f441d08;p=pandora-kernel.git intel_idle: disable NHM/WSM HW C-state auto-demotion Hardware C-state auto-demotion is a mechanism where the HW overrides the OS C-state request, instead demoting to a shallower state, which is less expensive, but saves less power. Modern Linux should generally get exactly the states it requests. In particular, when a CPU is taken off-line, it must not be demoted, else it can prevent the entire package from reaching deep C-states. https://bugzilla.kernel.org/show_bug.cgi?id=25252 Signed-off-by: Len Brown --- Reading git-diff-tree failed