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authorDeepak Nibade <dnibade@nvidia.com>2015-10-29 05:50:50 -0400
committerTerje Bergstrom <tbergstrom@nvidia.com>2015-11-23 11:32:39 -0500
commitf50d0ffb15aef2cbf419b81cdbc3031097767bff (patch)
treee1a6b25699c735864c6048dd72568d2435e50f51 /include/linux/tegra_vgpu.h
parent67fe5f6d738a9b1ba2d8f5dd0726790d965c8883 (diff)
gpu: nvgpu: support skipping buffer refcounting in submit
In job submission path, we always take refcount on all the mapped buffers to safeguard against case where user space releases the buffer early But in case user space itself is doing proper buffer management, kernel need not take refcounts on all the buffers - which is also a overhead in submit path Hence, provide a new submit flag NVGPU_SUBMIT_GPFIFO_FLAGS_SKIP_BUFFER_REFCOUNTING to optionally skip taking refcounts on all the buffers Also, if we do not take refcounts, then no need to drop any refcounts in gk20a_channel_update() as well Bug 1698667 Bug 200141116 Change-Id: I81bb7a03240300b691c70bcec04ea1badd5934f4 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/824718 (cherry picked from commit 8c8978fa303ec4e6db0233becdbdcbad4a248173) Reviewed-on: http://git-master/r/835801 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
Diffstat (limited to 'include/linux/tegra_vgpu.h')
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