Re: [Intel-gfx] [PATCH] drm/i915: Don't count semaphore waits towards a stuck ring

2013-06-09 Thread Ben Widawsky
On Fri, Jun 07, 2013 at 09:55:51AM +0100, Chris Wilson wrote: > If we detect a ring is in a valid wait for another, just let it be. > Eventually it will either begin to progress again, or the entire system > will come grinding to a halt and then hangcheck will fire as soon as the > deadlock is dete

[Intel-gfx] [PATCH] drm/i915: Don't count semaphore waits towards a stuck ring

2013-06-07 Thread Chris Wilson
If we detect a ring is in a valid wait for another, just let it be. Eventually it will either begin to progress again, or the entire system will come grinding to a halt and then hangcheck will fire as soon as the deadlock is detected. This error was foretold by Ben in commit 05407ff889ceebe383aa59