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| author |   Chunming Zhou <David1.Zhou@amd.com> | 2017-04-21 15:51:04 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2017-05-24 17:40:09 -0400 |
| commit | c350577073de8fe21e6cdd798c4e4746d670bb47 (patch) | |
| tree | 968c894c30c1e0ee539eb347c1117f104b681144 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | |
| parent | drm/amdgpu: reserve/unreserve vmid by vm ioctl v4 (diff) | |
| download | linux-dev-c350577073de8fe21e6cdd798c4e4746d670bb47.tar.xz linux-dev-c350577073de8fe21e6cdd798c4e4746d670bb47.zip | |
drm/amdgpu: add limitation for dedicated vm number v4
Limit reserved vmids to 1 to avoid taking too many
out of commission and starving the system.
v2: move #define to amdgpu_vm.h
v3: move reserved vmid counter to id_manager,
and increase counter before allocating vmid
v4: rename to reserved_vmid_num
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 24ccf677f5a5..fb25bb747730 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -84,6 +84,8 @@ struct amdgpu_bo_list_entry; /* hardcode that limit for now */ #define AMDGPU_VA_RESERVED_SIZE (8 << 20) +/* max vmids dedicated for process */ +#define AMDGPU_VM_MAX_RESERVED_VMID 1 struct amdgpu_vm_pt { struct amdgpu_bo *bo; @@ -154,6 +156,7 @@ struct amdgpu_vm_id_manager { unsigned num_ids; struct list_head ids_lru; struct amdgpu_vm_id ids[AMDGPU_NUM_VM]; + atomic_t reserved_vmid_num; }; struct amdgpu_vm_manager { |