[PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-17 Thread Konstantin Khlebnikov
This patch fixes regression in power consumtion of sandy bridge gpu, which exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that it's extremely busy. After that it never reaches rc6 state. Bug exists since kernel v3.6, commit b4ae3f22d238617ca11610b29fde16cf8c0bc6e0 ("drm/

[PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-17 Thread Daniel Vetter
On Wed, Jul 17, 2013 at 10:22:58AM +0400, Konstantin Khlebnikov wrote: > This patch fixes regression in power consumtion of sandy bridge gpu, which > exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that > it's extremely busy. After that it never reaches rc6 state. > > Bug

Re: [PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-17 Thread Jesse Barnes
On Wed, 17 Jul 2013 10:22:58 +0400 Konstantin Khlebnikov wrote: > This patch fixes regression in power consumtion of sandy bridge gpu, which > exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that > it's extremely busy. After that it never reaches rc6 state. > > Bug exis

[PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-17 Thread Jesse Barnes
On Wed, 17 Jul 2013 10:22:58 +0400 Konstantin Khlebnikov wrote: > This patch fixes regression in power consumtion of sandy bridge gpu, which > exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that > it's extremely busy. After that it never reaches rc6 state. > > Bug exis

Re: [PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-16 Thread Daniel Vetter
On Wed, Jul 17, 2013 at 10:22:58AM +0400, Konstantin Khlebnikov wrote: > This patch fixes regression in power consumtion of sandy bridge gpu, which > exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that > it's extremely busy. After that it never reaches rc6 state. > > Bug

[PATCH v2] drm/i915: fix long-standing SNB regression in power consumption after resume

2013-07-16 Thread Konstantin Khlebnikov
This patch fixes regression in power consumtion of sandy bridge gpu, which exists since v3.6 Sometimes after resuming from s2ram gpu starts thinking that it's extremely busy. After that it never reaches rc6 state. Bug exists since kernel v3.6, commit b4ae3f22d238617ca11610b29fde16cf8c0bc6e0 ("drm/