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Chris Wilson authored
Disabling the tasklet leaves it if scheduled on the ready to run list until it is re-enabled. This will leave the ksoftird thread spinning until satisfied. To prevent this situation on starting the GPU reset, we want to kill the tasklet first and then disable. The same problem will arise when a tasklet is scheduled from another device, so a better solution is required for the general case. Reported-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Fixes: 1f7b847d ("drm/i915: Disable engine->irq_tasklet around resets") Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170212172002.23072-3-chris@chris-wilson.co.ukReviewed-by:
Mika Kuoppala <mika.kuoppala@intel.com>
1d309634