diff options
| author | Yong Zhao <Yong.Zhao@amd.com> | 2019-09-26 06:57:30 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-03 17:11:04 +0300 |
| commit | 56fc40aba4d9bc22ccbb8ce88a1c41f666d04f05 (patch) | |
| tree | 5047bac876d499703715286c831c39f2420c0784 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | |
| parent | 3fe023d42ea82be7d32ad26ab9409d970c1d361f (diff) | |
| download | linux-56fc40aba4d9bc22ccbb8ce88a1c41f666d04f05.tar.xz | |
drm/amdkfd: Eliminate get_atc_vmid_pasid_mapping_valid
get_atc_vmid_pasid_mapping_valid() is very similar to
get_atc_vmid_pasid_mapping_pasid(), so they can be merged into a new
function get_atc_vmid_pasid_mapping_info() to reduce register access
times. More importantly, getting the PASID and the valid bit atomically
with a single read fixes some potential race conditions where the
mapping changes between the two reads.
Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c index 68acb8d5296e..4a49dbee26a1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c @@ -278,10 +278,8 @@ static const struct kfd2kgd_calls kfd2kgd = { .address_watch_execute = kgd_gfx_v9_address_watch_execute, .wave_control_execute = kgd_gfx_v9_wave_control_execute, .address_watch_get_offset = kgd_gfx_v9_address_watch_get_offset, - .get_atc_vmid_pasid_mapping_pasid = - kgd_gfx_v9_get_atc_vmid_pasid_mapping_pasid, - .get_atc_vmid_pasid_mapping_valid = - kgd_gfx_v9_get_atc_vmid_pasid_mapping_valid, + .get_atc_vmid_pasid_mapping_info = + kgd_gfx_v9_get_atc_vmid_pasid_mapping_info, .get_tile_config = kgd_gfx_v9_get_tile_config, .set_vm_context_page_table_base = kgd_gfx_v9_set_vm_context_page_table_base, .invalidate_tlbs = kgd_gfx_v9_invalidate_tlbs, |