drm/i915/execlists: Simply walk back along request timeline on reset

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The request's timeline will only contain requests from this context, in
order of execution. Therefore, we can simply look back along this
timeline to find the currently executing request.

If we do find that the current context has completed its last request,
that does not imply that all requests are completed in the context, so
only advance the ring->head up to the end of the known completions!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028124125.25176-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-10-28 12:41:25 +00:00

parent 13670f4ce9

commit a7f328fc78

1 changed files with 14 additions and 20 deletions

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

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