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author | Alex Waterman <alexw@nvidia.com> | 2017-10-17 18:54:31 -0400 |
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committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-11-01 22:06:27 -0400 |
commit | a8bd154f7907c7054f8668c5995c1b5a7f748edc (patch) | |
tree | c218183ea2b815141d3aa2eedbf3928610612ab1 /drivers/gpu/nvgpu/vgpu/vgpu.c | |
parent | d13c256d5ee11da1664377481543005142d9bd30 (diff) |
gpu: nvgpu: Remove user_mapped from mapped_buf
Remove the always true field 'user_mapped' from the mapped_buf
struct. All mapped_bufs are mapped by a user request since they
always originate from a dma_buf (for Linux, that is). As such
there is a fair amount of logic that could be deleted.
Linux specific: the own_mem_ref field was also be deleted. The
logic of only storing a dma_buf ref when the buffer is mapped
for the first time by a user is easy: when the mapped buffer is
found in the map cache release the outstanding dma_buf ref taken
earlier on in the map path. If the map cache does not have the
buffer simply let the higher level map code keep the dma_buf ref.
The dma_buf ref is released when the nvgpu_vm_unmap_system()
call-back is called by the unmap path.
JIRA NVGPU-30
JIRA NVGPU-71
Change-Id: I229d136713812a7332bdadd5ebacd85d983bbbf0
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1583983
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/vgpu/vgpu.c')
0 files changed, 0 insertions, 0 deletions