drm/i915: Report if i915_active is still busy upon waiting

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If we try to wait on an i915_active from within a critical section, it
will remain busy (such as if we are shrinking from within
i915_active_ref). Report the failure so that we do not proceed thinking
it is idle.

Extracted from a future patch "drm/i915: Coordinate i915_active with its
own mutex".

Fixes: 12c255b5da ("drm/i915: Provide an i915_active.acquire callback")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190702092117.1707-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-07-02 10:21:17 +01:00

parent 8759aa4cc1

commit afd1bcd4ad

1 changed files with 7 additions and 1 deletions

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drivers/gpu/drm/i915/i915_active.c

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