Messages in this thread | | | Date | Wed, 02 Mar 2011 20:43:32 -0500 (EST) | From | Len Brown <> | Subject | [GIT] idle patches for 2.6.38-rc7 |
| |
Hi Linus,
please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6.git idle-release
This will update the files shown below.
thanks!
Len Brown Intel Open Source Technology Center
arch/x86/include/asm/msr-index.h | 5 +++++ drivers/idle/intel_idle.c | 24 ++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-)
through these commits:
Len Brown (2): intel_idle: disable NHM/WSM HW C-state auto-demotion intel_idle: disable Atom/Lincroft HW C-state auto-demotion
with this log:
commit bfb53ccf1c734b1907df7189eef4c08489827951 Author: Len Brown <len.brown@intel.com> Date: Wed Feb 16 01:32:48 2011 -0500
intel_idle: disable Atom/Lincroft HW C-state auto-demotion Just as we had to disable auto-demotion for NHM/WSM, we need to do the same for Atom (Lincroft version). In particular, auto-demotion will prevent Lincroft from entering the S0i3 idle power saving state. https://bugzilla.kernel.org/show_bug.cgi?id=25252 Signed-off-by: Len Brown <len.brown@intel.com>
commit 14796fca2bd22acc73dd0887248d003b0f441d08 Author: Len Brown <len.brown@intel.com> Date: Tue Jan 18 20:48:27 2011 -0500
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 <len.brown@intel.com>
| |