drm/i915: WARN_ON fence pin leaks

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The fence pin count should always be <= the bo pin count. If that's
not the case then we have a funny problem and are leaking references
somewhere.

Which means we can catch fence pin leaks by checking for the same
upper limit as we do for the bo pin count. Inspired by a discussion
with Ville about a fence leak igt testcase.

v2: Also check for fence->pin_count <= ggtt_vma->pin_count, since that
might catch a leak even quicker. Also de-inline them, they're getting
too big.

v3: Don't separately check for MAX_PIN_COUNT since the > vma->pin_count
check will catch that already (Chris).

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Daniel Vetter 2014-05-13 12:11:26 +02:00

parent 56ef52cad5

commit d8ffa60b52

2 changed files with 28 additions and 20 deletions

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22

drivers/gpu/drm/i915/i915_drv.h

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26

drivers/gpu/drm/i915/i915_gem.c

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