drm: Add GEM ("graphics execution manager") to i915 driver.

GEM allows the creation of persistent buffer objects accessible by the
graphics device through new ioctls for managing execution of commands on the
device.  The userland API is almost entirely driver-specific to ensure that
any driver building on this model can easily map the interface to individual
driver requirements.

GEM is used by the 2d driver for managing its internal state allocations and
will be used for pixmap storage to reduce memory consumption and enable
zero-copy GLX_EXT_texture_from_pixmap, and in the 3d driver is used to enable
GL_EXT_framebuffer_object and GL_ARB_pixel_buffer_object.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index dcff9e9b52e3..217ad7dc7076 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -169,6 +169,7 @@ struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
 
         return child;
 }
+EXPORT_SYMBOL(drm_mm_get_block);
 
 /*
  * Put a block. Merge with the previous and / or next block if they are free.
@@ -217,6 +218,7 @@ void drm_mm_put_block(struct drm_mm_node * cur)
                 drm_free(cur, sizeof(*cur), DRM_MEM_MM);
         }
 }
+EXPORT_SYMBOL(drm_mm_put_block);
 
 struct drm_mm_node *drm_mm_search_free(const struct drm_mm * mm,
                                   unsigned long size,
@@ -265,6 +267,7 @@ int drm_mm_clean(struct drm_mm * mm)
 
         return (head->next->next == head);
 }
+EXPORT_SYMBOL(drm_mm_search_free);
 
 int drm_mm_init(struct drm_mm * mm, unsigned long start, unsigned long size)
 {
@@ -273,7 +276,7 @@ int drm_mm_init(struct drm_mm * mm, unsigned long start, unsigned long size)
 
         return drm_mm_create_tail_node(mm, start, size);
 }
-
+EXPORT_SYMBOL(drm_mm_init);
 
 void drm_mm_takedown(struct drm_mm * mm)
 {