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drm/amdgpu: Add KFD VRAM limit checking

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We don't want KFD processes evicting each other over VRAM usage.
Therefore prevent overcommitting VRAM among KFD applications with
a per-GPU limit. Also leave enough room for page tables on top
of the application memory usage.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2018-11-19 20:05:54 -05:00
committed by Alex Deucher
parent 5634e38cda
commit 611736d844
5 changed files with 75 additions and 54 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
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@@ -34,6 +34,7 @@
#include "amdgpu_vm.h"
extern const struct kgd2kfd_calls *kgd2kfd;
extern uint64_t amdgpu_amdkfd_total_mem_size;
struct amdgpu_device;
@@ -76,6 +77,11 @@ struct amdgpu_amdkfd_fence {
char timeline_name[TASK_COMM_LEN];
};
struct amdgpu_kfd_dev {
struct kfd_dev *dev;
uint64_t vram_used;
};
struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
struct mm_struct *mm);
bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
@@ -195,6 +201,6 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
struct kfd_vm_fault_info *info);
void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo);
void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
#endif /* AMDGPU_AMDKFD_H_INCLUDED */