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If the system is being slow and userspace is racing ahead of the GPU and finds itself waiting for the GPU to catch up, before the process sleeps give the tasklet a kick, bypassing ksoftirqd. If the system is overloaded, then ksoftirqd may be delayed incurring additional latency to our user. This should not be a frequent problem, but in the past we have observed several hundred millisecond delays before ksoftirqd services an interrupt, so burn a few cycles to lend a helping hand. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191015132606.14349-1-chris@chris-wilson.co.uk |
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| Makefile | ||