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drm/amdgpu: add IOCTL interface for per VM BOs v3

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Add the IOCTL interface so that applications can allocate per VM BOs.

Still WIP since not all corner cases are tested yet, but this reduces average
CS overhead for 10K BOs from 21ms down to 48us.

v2: add some extra checks, remove the WIP tag
v3: rename new flag to AMDGPU_GEM_CREATE_VM_ALWAYS_VALID

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2017-08-25 09:14:43 +02:00
committed by Alex Deucher
parent 73fb16e7eb
commit e1eb899b45
5 changed files with 55 additions and 22 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
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@@ -149,7 +149,7 @@ static int amdgpufb_create_pinned_object(struct amdgpu_fbdev *rfbdev,
AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
AMDGPU_GEM_CREATE_VRAM_CLEARED,
true, &gobj);
true, NULL, &gobj);
if (ret) {
pr_err("failed to allocate framebuffer (%d)\n", aligned_size);
return -ENOMEM;