From: Sushmita Susheelendra <ssush...@codeaurora.org>
Map command buffers to the kernel address space only if
relocs are specified for the submission. This reduces some
overhead on the submission path.
Signed-off-by: Sushmita Susheelendra <ssush...@codeaurora.org>
Signed-off-by: Jordan Crouse <jcro...@codeaurora.org>
---
drivers/gpu/drm/msm/msm_gem_submit.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c
b/drivers/gpu/drm/msm/msm_gem_submit.c
index 2708d3a..2d2aa65 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -320,6 +320,9 @@ static int submit_reloc(struct msm_gem_submit *submit,
struct msm_gem_object *ob
return -EINVAL;
}
+ if (nr_relocs == 0)
+ return 0;
+
/* For now, just map the entire thing. Eventually we probably
* to do it page-by-page, w/ kmap() if not vmap()d..
*/
--
1.9.1
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