On Tue, 11 Jan 2011 14:16:54 -0800, Linus Torvalds torvalds@linux-foundation.org wrote:
The BUG_ON() that triggers is appended. And as mentioned, the jerky thing really seems to start happening in the exact same circumstance when this BUG_ON triggered.
Yes, that is the race in IRQ refcounting that I have an outstanding fix for.
I've put the patches up on drm-intel-staging as I begin retesting them before sending the pull request. In particular you need 01a03331e5fe91861937f8b8e72c259f5e9eae67. -Chris