]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] correct slow acpi_pm rating
authorjohn stultz <johnstul@us.ibm.com>
Tue, 27 Mar 2007 05:32:19 +0000 (21:32 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 27 Mar 2007 16:05:15 +0000 (09:05 -0700)
commit1ff100d76ff76477a2ead3aac94d04f2e891f44e
treec7e20ccf28835daacec98fb2b19aae66e0f34695
parentd340d89087534e8b12e1b6ed1c1569dd892b5465
[PATCH] correct slow acpi_pm rating

On Bob's machine clocksource is selecting PIT over the ACPI PM timer,
because he has the PIIX4 bug.  That bug drops the ACPI PM timers rating
to the same as the PIT, so that's why you're getting the PIT.

Realistically, the PIT is much slower then even the triple read ACPI PM,
so the de-ranking code is probably dropping it too far.

So don't drop ACPI PM quite so low if we see the PIIX4 bug.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Bob Tracy <rct@gherkin.frus.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/clocksource/acpi_pm.c