[Bug 110519] [CI][SHARDS] igt at gem_exec_schedule@semaphore-resolve - fail - Failed assertion: !"GPU hung"
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Jun 20 18:11:11 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=110519
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 8ee36e048c98d4015804a23f884be2576f778a93 (HEAD -> drm-intel-next-queued,
drm-intel/for-linux-next, drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Thu Jun 20 15:20:52 2019 +0100
drm/i915/execlists: Minimalistic timeslicing
If we have multiple contexts of equal priority pending execution,
activate a timer to demote the currently executing context in favour of
the next in the queue when that timeslice expires. This enforces
fairness between contexts (so long as they allow preemption -- forced
preemption, in the future, will kick those who do not obey) and allows
us to avoid userspace blocking forward progress with e.g. unbounded
MI_SEMAPHORE_WAIT.
For the starting point here, we use the jiffie as our timeslice so that
we should be reasonably efficient wrt frequent CPU wakeups.
Testcase: igt/gem_exec_scheduler/semaphore-resolve
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20190620142052.19311-2-chris@chris-wilson.co.uk
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