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| author | ddutta <ddutta@nvidia.com> | 2020-03-03 04:19:36 -0500 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2020-03-05 07:54:42 -0500 |
| commit | bb2c8ef511763d9f61f7e3b4bbfa7a27b9d5c2b6 (patch) | |
| tree | e3af53634d8280965117038b99754b0ad15c7c30 /drivers/gpu/nvgpu/gk20a | |
| parent | fbad02d5e045fbc10f44fbecf419235938d4d0bc (diff) | |
gpu: nvgpu: decrease refcount when sync-unmap fails
When nvgpu_vm_unmap_sync fails, nvgpu_unmap_sync currently bails
out without decreasing the buffer refcount. This prevents from
releasing the buffer, in case a deferred job completes after the
timeout (which was observed 2 times during overnight
stress tests). This also means that the fixed address is not
re-useable.
Throw out a warning when nvgpu_vm_unmap_sync fails, but proceed
with decreasing refcount.
Bug 200578193
Change-Id: Ie0cc7caa7d12ca0a3b42123a5f7a28bda72dabbc
Signed-off-by: ddutta <ddutta@nvidia.com>
(cherry picked from commit a433f26d5bb1ec3253fc2655998b1ef7fb2847cb
in dev-main)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2291352
Tested-by: Naveen Kumar S <nkumars@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a')
0 files changed, 0 insertions, 0 deletions