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authorThomas Hellstrom <thellstrom@vmware.com>2012-11-06 11:31:50 +0000
committerDave Airlie <airlied@redhat.com>2012-11-20 16:15:05 +1000
commitcdad05216c2b2edfe92a9f87d6ae51aab277f3b2 (patch)
tree1ba899709b77745acec655d0a8eea3f08c97a885 /drivers/gpu/drm/vmwgfx
parent4b20db3de8dab005b07c74161cb041db8c5ff3a7 (diff)
drm/ttm, drm/vmwgfx: Use RCU locking for object lookups v3
The mostly used lookup+get put+potential_destroy path of TTM objects is converted to use RCU locks. This will substantially decrease the amount of locked bus cycles during normal operation. Since we use kfree_rcu to free the objects, no rcu synchronization is needed at module unload time. v2: Don't touch include/linux/kref.h v3: Adapt to kref_get_unless_zero return value change Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_resource.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index 596cef3c9189..292c988c54ea 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -351,7 +351,7 @@ static void vmw_user_context_free(struct vmw_resource *res)
container_of(res, struct vmw_user_context, res);
struct vmw_private *dev_priv = res->dev_priv;
- kfree(ctx);
+ ttm_base_object_kfree(ctx, base);
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
}
@@ -1143,7 +1143,7 @@ static void vmw_user_surface_free(struct vmw_resource *res)
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
- kfree(user_srf);
+ ttm_base_object_kfree(user_srf, base);
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
}
@@ -1571,7 +1571,7 @@ static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
{
struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
- kfree(vmw_user_bo);
+ ttm_base_object_kfree(vmw_user_bo, base);
}
static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
@@ -1759,7 +1759,7 @@ static void vmw_user_stream_free(struct vmw_resource *res)
container_of(res, struct vmw_user_stream, stream.res);
struct vmw_private *dev_priv = res->dev_priv;
- kfree(stream);
+ ttm_base_object_kfree(stream, base);
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_stream_size);
}