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| author | Ben Widawsky <benjamin.widawsky@intel.com> | 2013-09-24 09:57:57 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-01 07:45:21 +0200 |
| commit | 5c2abbeab798154166d42fce4f71790caa6dd9bc (patch) | |
| tree | 4f2232391cd39f6a9dc5887af634f1c045d6074e /drivers/gpu/drm/i915/i915_drv.h | |
| parent | bcccff847d1fdb53c2fae999a7f03facfa399bab (diff) | |
| download | lwn-5c2abbeab798154166d42fce4f71790caa6dd9bc.tar.gz lwn-5c2abbeab798154166d42fce4f71790caa6dd9bc.zip | |
drm/i915: Provide a cheap ggtt vma lookup
"We do fairly often lookup the ggtt vma for an obj." - Chris Wilson. As
such, provide a function to offer slightly cheaper access to the vma.
Not performance tested. By my quick estimation it saves at least 3
pointer dereferences from the existing mechanism.
This patch mostly matches code from Chris in
<20130911221430.GB7825@nuc-i3427.alporthouse.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 662c0ff0b049..a3d43b25e1d9 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2030,6 +2030,9 @@ struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj, struct i915_vma * i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, struct i915_address_space *vm); + +struct i915_vma *i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj); + /* Some GGTT VM helpers */ #define obj_to_ggtt(obj) \ (&((struct drm_i915_private *)(obj)->base.dev->dev_private)->gtt.base) @@ -2066,7 +2069,6 @@ i915_gem_obj_ggtt_pin(struct drm_i915_gem_object *obj, return i915_gem_object_pin(obj, obj_to_ggtt(obj), alignment, map_and_fenceable, nonblocking); } -#undef obj_to_ggtt /* i915_gem_context.c */ void i915_gem_context_init(struct drm_device *dev); |