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authorChristian König2017-12-01 13:28:46 +0100
committerAlex Deucher2017-12-12 14:45:54 -0500
commite3a1b32a12ef83e260a307e678d053d5f4570acd (patch)
treeb1a1d6d9a715ac30a68a75cceb768896aec731e8
parent2ffe31deb27579e2f2c9444e01f4d8abf385d145 (diff)
drm/amdgpu: avoid the modulo in amdgpu_vm_get_entry
We can do this with a simple mask as well. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 1c3dd6e0ed33..bd6296a6dab1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1285,11 +1285,11 @@ void amdgpu_vm_get_entry(struct amdgpu_pte_update_params *p, uint64_t addr,
*parent = NULL;
*entry = &p->vm->root;
while ((*entry)->entries) {
- unsigned idx = addr >> amdgpu_vm_level_shift(p->adev, level++);
+ unsigned shift = amdgpu_vm_level_shift(p->adev, level++);
- idx %= amdgpu_bo_size((*entry)->base.bo) / 8;
*parent = *entry;
- *entry = &(*entry)->entries[idx];
+ *entry = &(*entry)->entries[addr >> shift];
+ addr &= (1ULL << shift) - 1;
}
if (level != p->adev->vm_manager.num_level)