>-----Original Message----- >From: linux-acpi-owner@xxxxxxxxxxxxxxx >[mailto:linux-acpi-owner@xxxxxxxxxxxxxxx] On Behalf Of Rafael >J. Wysocki >Sent: Friday, March 28, 2008 4:01 PM >To: Pallipadi, Venkatesh >Cc: David Brownell; Andrew Morton; >linux-kernel@xxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx; Len Brown >Subject: Re: 2.6.25 regression: powertop says 120K wakeups/sec > >On Friday, 28 of March 2008, Venki Pallipadi wrote: >> On Fri, Mar 28, 2008 at 03:09:22PM -0700, David Brownell wrote: >> > On Friday 28 March 2008, Pallipadi, Venkatesh wrote: >> > > You should have a dmesg line which looks like >> > > ACPI: CPU0 (power states: C1[C1] C2[C2] >> > > Do you see C2 in such line? >> > >> > Yes: >> > >> > ACPI: CPU0 (power states: C1[C1] C2[C2]) >> >> >> David, >> >> I think I figured out the bug... >> >> Can you try the below patch and confirm that it works (over >upstream - ignore >> the earlier revert patch I sent to you). >> >> Thanks, >> Venki >> >> ---- >> >> >> Patch to fix huge number of wakeups reported due to recent changes in >> processor_idle.c. The problem was that the entry_method >determination was >> broken due to one of the recent commits (bc71bec91f987) causing >> C1 entry to not to go to halt. This should also fix the hang >reported here. >> http://bugzilla.kernel.org/show_bug.cgi?id=10093 > >Ah, thanks for figuring that out. As a regression fix, it >should go upstream >ASAP, I think. > Lets just wait for confirmation from either David or in bug #10093. Yes. Once we get that confirmation this should go upstream. Thanks, Venki -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
