Subject : [BISECTED] Lots of "rescheduling IPIs" in powertop Submitter : Vegard Nossum <vegard.nossum@gmail.com> Date : 2008-05-13 20:42 References : http://marc.info/?l=linux-kernel&m=121071176205864&w=4 Handled-By : Andi Kleen <andi@firstfloor.org> Handled-By : Arjan van de Ven <arjan@infradead.org> Handled-By : Ingo Molnar <mingo@elte.hu> Patch : http://marc.info/?l=linux-kernel&m=121074826823352&w=4 This entry is being used for tracking a regression from 2.6.25. Please don't close it until the problem is fixed in the mainline.
Caused by: commit 0c07ee38c9d4eb081758f5ad14bbffa7197e1aec Author: Andi Kleen <ak@suse.de> Date: Wed Jan 30 13:33:16 2008 +0100 x86: use the correct cpuid method to detect MWAIT support for C states Cc: "Andreas Herrmann" <andreas.herrmann3@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
I don't think that's correct in the regression list. It is currently not clear it is even a regression. There's a fair chance it is actually correct behavior on that box.
Regressions list annotation: References : http://lkml.org/lkml/2008/5/18/120
fixed by commit a738d897b7b03b83488ae74a9bc03d26a2875dc6