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drm/i915: Mark up i915_gem_active for locking annotation

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The future annotations will track the locking used for access to ensure
that it is always sufficient. We make the preparations now to present
the API ahead and to make sure that GCC can eliminate the unused
parameter.

Before:	6298417 3619610  696320 10614347         a1f64b vmlinux
After:	6298417 3619610  696320 10614347         a1f64b vmlinux
(with i915 builtin)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470293567-10811-12-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2016-08-04 07:52:31 +01:00
parent 27c01aaef0
commit d72d908b56
8 changed files with 101 additions and 46 deletions
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3
drivers/gpu/drm/i915/i915_gem_userptr.c
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@@ -74,7 +74,8 @@ static void wait_rendering(struct drm_i915_gem_object *obj)
for (i = 0; i < I915_NUM_ENGINES; i++) {
struct drm_i915_gem_request *req;
req = i915_gem_active_get(&obj->last_read[i]);
req = i915_gem_active_get(&obj->last_read[i],
&obj->base.dev->struct_mutex);
if (req)
requests[n++] = req;
}