From: Sushmita Susheelendra ssusheel@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 ssusheel@codeaurora.org Signed-off-by: Jordan Crouse jcrouse@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.. */