drm/i915/gt: Another tweak for flushing the tasklets

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tasklet_kill() ensures that we _yield_ the processor until a remote
tasklet is completed. However, this leads to a starvation condition as
being at the bottom of the scheduler's runqueue means that anything else
is able to run, including all hogs keeping the tasklet occupied.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201220134858.10510-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-12-20 13:48:58 +00:00

parent 9bb36cf660

commit 5ec17c7630

3 changed files with 12 additions and 7 deletions

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7

drivers/gpu/drm/i915/gt/intel_engine.h

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10

drivers/gpu/drm/i915/gt/intel_engine_cs.c

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2

drivers/gpu/drm/i915/i915_request.c

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