Seperately accumulate a statistic of rounded up allocations to use
to report availability, with a view to increasing the likelihood a
buffer object can be successfully allocated at exactly the size
reported by the availability API.
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 73bf8b5f2aa9..781274be5f27 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -96,6 +96,7 @@ struct amdgpu_amdkfd_fence {
struct amdgpu_kfd_dev {
struct kfd_dev *dev;
uint64_t vram_used;
+ uint64_t vram_used_aligned;
bool init_complete;
struct work_struct reset_work;
};
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 014a594899fb..e5ea897f56bc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -181,6 +181,7 @@ static int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
* memory, TTM memory and GPU memory as computed above
*/
adev->kfd.vram_used += vram_needed;
+ adev->kfd.vram_used_aligned += ALIGN(vram_needed, VRAM_AVAILABLITY_ALIGN);
kfd_mem_limit.system_mem_used += system_mem_needed;
kfd_mem_limit.ttm_mem_used += ttm_mem_needed;
@@ -199,6 +200,7 @@ static void unreserve_mem_limit(struct amdgpu_device *adev,
kfd_mem_limit.ttm_mem_used -= size;
} else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
adev->kfd.vram_used -= size;
+ adev->kfd.vram_used_aligned -= ALIGN(size, VRAM_AVAILABLITY_ALIGN);
} else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) {
kfd_mem_limit.system_mem_used -= size;
} else if (!(alloc_flag &
@@ -1644,7 +1646,7 @@ size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev)
size_t available;
spin_lock(&kfd_mem_limit.mem_limit_lock);
available = adev->gmc.real_vram_size
- - adev->kfd.vram_used
+ - adev->kfd.vram_used_aligned
- atomic64_read(&adev->vram_pin_size)
- reserved_for_pt;
spin_unlock(&kfd_mem_limit.mem_limit_lock);
--
2.34.1
