http://bugzilla.kernel.org/show_bug.cgi?id=12152
------- Comment #1 from [EMAIL PROTECTED] 2008-12-07 23:27 ------- On Monday, 8 of December 2008, Yves-Alexis Perez wrote: > On lun, 2008-12-08 at 07:24 +0100, Yves-Alexis Perez wrote: > > On dim, 2008-12-07 at 15:12 -0800, Arjan van de Ven wrote: > > > > > > > > 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? > > > > > > I don't know about this specifc case (not enough information) but for > > > the case I described it's not a regression. Going to interrupt driven > > > from busy waiting is an improvement not a regression :) > > > > Well, several thousand or more interrupts really seems like a > > regression :). But it seems that's the same thing as the “IRQ > > spinning” (there was a thread on dri-devel about that). > > > > It seems fixed with a patch from Matthew Garrett applied to > > drm-intel/for-airlied but I don't think this has been applied to Linus > > master. > > And it seems the same thing as > https://bugs.freedesktop.org/show_bug.cgi?id=18609 -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
