drm/i915: Use atomic for dev_priv->mm.bsd_engine_dispatch_index

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Use atomic type and operands for dev_priv->mm.bsd_engine_dispatch_index
to avoid one struct_mutex locking scenario.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Zhao Yakui <yakui.zhao@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1472731101-21982-1-git-send-email-joonas.lahtinen@linux.intel.com

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This commit is contained in:

Joonas Lahtinen 2016-09-01 14:58:21 +03:00

parent 5423adf1d4

commit 6f63340284

3 changed files with 6 additions and 8 deletions

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2

drivers/gpu/drm/i915/i915_drv.h

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2

drivers/gpu/drm/i915/i915_gem.c

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10

drivers/gpu/drm/i915/i915_gem_execbuffer.c

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