drm/i915/execlists: Assert there are no simple cycles in the dependencies

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The dependency chain must be an acyclic graph. This is checked by the
swfence, but for sanity, also do a simple check that we do not corrupt
our list iteration in execlists_schedule() by a shallow dependency
cycle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180102151235.3949-10-chris@chris-wilson.co.uk

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Chris Wilson 2018-01-02 15:12:26 +00:00

parent 83cc84c5a8

commit ce01b17377

1 changed files with 8 additions and 3 deletions

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drivers/gpu/drm/i915/intel_lrc.c

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