[PATCH 3/3] drm: do not sleep on vblank while holding a mutex

Michel Dänzer michel at daenzer.net
Thu Oct 27 23:59:04 PDT 2011

On Don, 2011-10-27 at 22:19 -0500, Ilija Hadzic wrote: 
> On Thu, 27 Oct 2011, Daniel Vetter wrote:
> > So I think the right thing to do is
> > - Kill dev->last_vblank_wait (in a prep patch).
> Agreed. Also drm_vblank_info function can go away

Actually, I was rather going to submit a patch to hook it up again —
AFAICT it was unhooked without any justification. It could be useful for
debugging vblank related hangs. Any issues with it, such as
last_vblank_wait not being guaranteed to really be the last one, can
always be improved later on.

Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer

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