diff options
author | Alex Sierra <alex.sierra@amd.com> | 2022-05-17 12:19:06 -0500 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2022-07-20 16:03:49 -0400 |
commit | 86bd6706c404ea703c11071d8b600d46bb98873c (patch) | |
tree | b94f90c646f22cadea603c87b4f73cc59d9fa0ba /drivers/gpu/drm/amd/amdgpu | |
parent | 5df79aeb6e0890d6f5fd6e12c7ad238a1617b210 (diff) | |
download | linux-86bd6706c404ea703c11071d8b600d46bb98873c.tar.bz2 |
drm/amdgpu: remove acc_size from reserve/unreserve mem
TTM used to track the "acc_size" of all BOs internally. We needed to
keep track of it in our memory reservation to avoid TTM running out
of memory in its own accounting. However, that "acc_size" accounting
has since been removed from TTM. Therefore we don't really need to
track it any more.
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 60 |
1 files changed, 17 insertions, 43 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 581c7ae41102..d2d2b16c4d50 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -115,21 +115,12 @@ void amdgpu_amdkfd_reserve_system_mem(uint64_t size) * compromise that should work in most cases without reserving too * much memory for page tables unnecessarily (factor 16K, >> 14). */ -#define ESTIMATE_PT_SIZE(mem_size) max(((mem_size) >> 14), AMDGPU_VM_RESERVED_VRAM) - -static size_t amdgpu_amdkfd_acc_size(uint64_t size) -{ - size >>= PAGE_SHIFT; - size *= sizeof(dma_addr_t) + sizeof(void *); - return __roundup_pow_of_two(sizeof(struct amdgpu_bo)) + - __roundup_pow_of_two(sizeof(struct ttm_tt)) + - PAGE_ALIGN(size); -} +#define ESTIMATE_PT_SIZE(mem_size) max(((mem_size) >> 14), AMDGPU_VM_RESERVED_VRAM) /** * amdgpu_amdkfd_reserve_mem_limit() - Decrease available memory by size - * of buffer including any reserved for control structures + * of buffer. * * @adev: Device to which allocated BO belongs to * @size: Size of buffer, in bytes, encapsulated by B0. This should be @@ -143,19 +134,16 @@ static int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev, { uint64_t reserved_for_pt = ESTIMATE_PT_SIZE(amdgpu_amdkfd_total_mem_size); - size_t acc_size, system_mem_needed, ttm_mem_needed, vram_needed; + size_t system_mem_needed, ttm_mem_needed, vram_needed; int ret = 0; - acc_size = amdgpu_amdkfd_acc_size(size); - + system_mem_needed = 0; + ttm_mem_needed = 0; vram_needed = 0; if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_GTT) { - system_mem_needed = acc_size + size; - ttm_mem_needed = acc_size + size; + system_mem_needed = size; + ttm_mem_needed = size; } else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) { - system_mem_needed = acc_size; - ttm_mem_needed = acc_size; - /* * Conservatively round up the allocation requirement to 2 MB * to avoid fragmentation caused by 4K allocations in the tail @@ -163,14 +151,10 @@ static int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev, */ vram_needed = ALIGN(size, VRAM_ALLOCATION_ALIGN); } else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) { - system_mem_needed = acc_size + size; - ttm_mem_needed = acc_size; - } else if (alloc_flag & - (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL | - KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP)) { - system_mem_needed = acc_size; - ttm_mem_needed = acc_size; - } else { + system_mem_needed = size; + } else if (!(alloc_flag & + (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL | + KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP))) { pr_err("%s: Invalid BO type %#x\n", __func__, alloc_flag); return -ENOMEM; } @@ -208,28 +192,18 @@ release: static void unreserve_mem_limit(struct amdgpu_device *adev, uint64_t size, u32 alloc_flag) { - size_t acc_size; - - acc_size = amdgpu_amdkfd_acc_size(size); - spin_lock(&kfd_mem_limit.mem_limit_lock); if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_GTT) { - kfd_mem_limit.system_mem_used -= (acc_size + size); - kfd_mem_limit.ttm_mem_used -= (acc_size + size); + kfd_mem_limit.system_mem_used -= size; + kfd_mem_limit.ttm_mem_used -= size; } else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) { - kfd_mem_limit.system_mem_used -= acc_size; - kfd_mem_limit.ttm_mem_used -= acc_size; adev->kfd.vram_used -= ALIGN(size, VRAM_ALLOCATION_ALIGN); } else if (alloc_flag & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) { - kfd_mem_limit.system_mem_used -= (acc_size + size); - kfd_mem_limit.ttm_mem_used -= acc_size; - } else if (alloc_flag & - (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL | - KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP)) { - kfd_mem_limit.system_mem_used -= acc_size; - kfd_mem_limit.ttm_mem_used -= acc_size; - } else { + kfd_mem_limit.system_mem_used -= size; + } else if (!(alloc_flag & + (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL | + KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP))) { pr_err("%s: Invalid BO type %#x\n", __func__, alloc_flag); goto release; } |