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author | Christian König <christian.koenig@amd.com> | 2019-08-30 14:38:37 +0200 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2019-09-13 17:38:47 -0500 |
commit | 9d1b3c78052e87fbb1beb7912bf5b2d5b19f2c2c (patch) | |
tree | 97e0eecfc0208ade51ca59fcf1a6317b9de79d16 /drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | |
parent | 629be2039532b61907829f89446445dded1daa0a (diff) | |
download | lwn-9d1b3c78052e87fbb1beb7912bf5b2d5b19f2c2c.tar.gz lwn-9d1b3c78052e87fbb1beb7912bf5b2d5b19f2c2c.zip |
drm/amdgpu: reserve at least 4MB of VRAM for page tables v2
This hopefully helps reduce the contention for page tables.
v2: adjust maximum reported VRAM size 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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 0e2ec608530b..c28dc079a0a1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -619,9 +619,12 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file struct drm_amdgpu_info_vram_gtt vram_gtt; vram_gtt.vram_size = adev->gmc.real_vram_size - - atomic64_read(&adev->vram_pin_size); - vram_gtt.vram_cpu_accessible_size = adev->gmc.visible_vram_size - - atomic64_read(&adev->visible_pin_size); + atomic64_read(&adev->vram_pin_size) - + AMDGPU_VM_RESERVED_VRAM; + vram_gtt.vram_cpu_accessible_size = + min(adev->gmc.visible_vram_size - + atomic64_read(&adev->visible_pin_size), + vram_gtt.vram_size); vram_gtt.gtt_size = adev->mman.bdev.man[TTM_PL_TT].size; vram_gtt.gtt_size *= PAGE_SIZE; vram_gtt.gtt_size -= atomic64_read(&adev->gart_pin_size); @@ -634,15 +637,18 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file memset(&mem, 0, sizeof(mem)); mem.vram.total_heap_size = adev->gmc.real_vram_size; mem.vram.usable_heap_size = adev->gmc.real_vram_size - - atomic64_read(&adev->vram_pin_size); + atomic64_read(&adev->vram_pin_size) - + AMDGPU_VM_RESERVED_VRAM; mem.vram.heap_usage = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]); mem.vram.max_allocation = mem.vram.usable_heap_size * 3 / 4; mem.cpu_accessible_vram.total_heap_size = adev->gmc.visible_vram_size; - mem.cpu_accessible_vram.usable_heap_size = adev->gmc.visible_vram_size - - atomic64_read(&adev->visible_pin_size); + mem.cpu_accessible_vram.usable_heap_size = + min(adev->gmc.visible_vram_size - + atomic64_read(&adev->visible_pin_size), + mem.vram.usable_heap_size); mem.cpu_accessible_vram.heap_usage = amdgpu_vram_mgr_vis_usage(&adev->mman.bdev.man[TTM_PL_VRAM]); mem.cpu_accessible_vram.max_allocation = |