Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [Bug #12152] Huge wakeups number from i1915 | Date | Sun, 7 Dec 2008 23:52:06 +0100 |
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On Sunday, 7 of December 2008, Arjan van de Ven wrote: > On Sun, 7 Dec 2008 21:32:54 +0100 (CET) > "Rafael J. Wysocki" <rjw@sisk.pl> wrote: > > > This message has been generated automatically as a part of a report > > of recent regressions. > > > > The following bug entry is on the current list of known regressions > > from 2.6.27. Please verify if it still should be listed and let me > > know (either way). > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12152 > > Subject : Huge wakeups number from i1915 > > Submitter : Yves-Alexis Perez <corsac@debian.org> > > Date : 2008-12-02 16:48 (6 days old) > > References : > > http://marc.info/?l=linux-acpi&m=122823656702994&w=4 > > > > at least in some of the cases where this has been seen the cause is the > following: > The i915 DRM driver used to do polling for completion, busy waiting. It > moved to be interrupt driven, which is usually better for power, but it > will show up as more wakeups in powertop....
IOW, this is not a regression?
Rafael
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