diff options
| author | Kenneth Graunke <[email protected]> | 2017-07-17 12:57:20 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2017-07-22 19:34:42 -0700 |
| commit | bdae2ddff89004c199b71cb6a4a306dee616f7f9 (patch) | |
| tree | 7ed9992f828a5b62fe42aee48e0e9b207c1ba20a | |
| parent | 38e2142f392f9b6ac78eab72a1f92dd37553e1d8 (diff) | |
i965/bufmgr: Skip wait ioctl when not busy.
If the buffer is idle, we I915_GEM_WAIT will return immediately,
so we may as well skip the ioctl altogether. We can't trust the
"idle" flag for external buffers, but for most, it should be fine.
Reviewed-by: Matt Turner <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_bufmgr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.c b/src/mesa/drivers/dri/i965/brw_bufmgr.c index fc2a2276236..5edf4626b4f 100644 --- a/src/mesa/drivers/dri/i965/brw_bufmgr.c +++ b/src/mesa/drivers/dri/i965/brw_bufmgr.c @@ -924,6 +924,10 @@ brw_bo_wait(struct brw_bo *bo, int64_t timeout_ns) struct drm_i915_gem_wait wait; int ret; + /* If we know it's idle, don't bother with the kernel round trip */ + if (bo->idle && !bo->external) + return 0; + memclear(wait); wait.bo_handle = bo->gem_handle; wait.timeout_ns = timeout_ns; |