drm: Only bump object-reference count when adding first handle

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We only need a single reference count for all handles (i.e. non-zero
obj->handle_count) and so can trim a few atomic operations by only
taking the reference on the first handle and dropping it after the last.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1451902261-25380-2-git-send-email-chris@chris-wilson.co.uk
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Chris Wilson 2016-01-04 10:11:00 +00:00 • committed by Daniel Vetter

parent 6984128d01

commit 98a8883ad4

1 changed files with 12 additions and 5 deletions

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17

drivers/gpu/drm/drm_gem.c

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