drm/i915: Detect potential i915_reset_trylock() lockups

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Use lockdep to warn before we wait indefinitely in case we may be
waiting indefinitely.

Suggested-by: Mika Kuoppala <mika.kuoppala@intel.com>
References: 2caffbf117 ("drm/i915: Revoke mmaps and prevent access to fence registers across reset")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190212130831.14425-2-chris@chris-wilson.co.uk

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Chris Wilson 2019-02-12 13:08:31 +00:00

parent aeaaa55c73

commit b3b0391af2

1 changed files with 3 additions and 0 deletions

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drivers/gpu/drm/i915/i915_reset.c

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