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author | Deepak Nibade <dnibade@nvidia.com> | 2015-10-07 06:50:07 -0400 |
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committer | Sachin Nikam <snikam@nvidia.com> | 2015-12-08 04:18:04 -0500 |
commit | 52753b51f1dbf51221d7856a9288aad1ab2d351a (patch) | |
tree | 70a9dbdba1087797202ec3e1a584408d82947bd9 /include/uapi/linux | |
parent | 937de14907bbc238d180defc1afe036faa24f1bc (diff) |
gpu: nvgpu: create sync_fence only if needed
Currently, we create sync_fence (from nvhost_sync_create_fence())
for every submit
But not all submits request for a sync_fence.
Also, nvhost_sync_create_fence() API takes about 1/3rd of the total
submit path.
Hence to optimize, we can allocate sync_fence
only when user explicitly asks for it using
(NVGPU_SUBMIT_GPFIFO_FLAGS_FENCE_GET &&
NVGPU_SUBMIT_GPFIFO_FLAGS_SYNC_FENCE)
Also, in CDE path from gk20a_prepare_compressible_read(),
we reuse existing fence stored in "state" and that can
result into not returning sync_fence_fd when user asked
for it
Hence, force allocation of sync_fence when job submission
comes from CDE path
Bug 200141116
Change-Id: Ia921701bf0e2432d6b8a5e8b7d91160e7f52db1e
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/812845
(cherry picked from commit 5fd47015eeed00352cc8473eff969a66c94fee98)
Reviewed-on: http://git-master/r/837662
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Diffstat (limited to 'include/uapi/linux')
0 files changed, 0 insertions, 0 deletions