drm/i915: Avoid early GPU idling due to already pending idle work
authorImre Deak <imre.deak@intel.com>
Mon, 7 Nov 2016 09:20:02 +0000 (11:20 +0200)
committerImre Deak <imre.deak@intel.com>
Mon, 7 Nov 2016 12:48:04 +0000 (14:48 +0200)
commit5bd11a34e46afa1048bd5330673fb1508183f6a5
tree540f2ab7d664d0d50613c5c25982113273b5dabe
parent767a222e47cc13239d38018887f911fec06169ea
drm/i915: Avoid early GPU idling due to already pending idle work

Atm, in case an idle work handler is already pending but haven't yet
started to run, retiring a new request will not extend the active period
as required, rather simply leaves the pending idle work to be scheduled
at the original expiration time. This may lead to idling the GPU too
early. Fix this by using the delayed-work scheduler alternative which
makes sure the handler's expiration time is extended in this case.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Requested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1478510405-11799-1-git-send-email-imre.deak@intel.com
drivers/gpu/drm/i915/i915_gem_request.c