diff options
| author |   Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> | 2022-08-20 00:33:01 -0700 |
|---|---|---|
| committer |   Christian König <christian.koenig@amd.com> | 2022-08-22 15:35:22 +0200 |
| commit | ded910f368a52b64a3c0eb12da085058b55f61a1 (patch) | |
| tree | f4a95accbc21f86f1e8de87410154147c56ec419 /drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | |
| parent | drm/ttm: Implement intersect/compatible functions (diff) | |
| download | wireguard-linux-ded910f368a52b64a3c0eb12da085058b55f61a1.tar.xz wireguard-linux-ded910f368a52b64a3c0eb12da085058b55f61a1.zip | |
drm/amdgpu: Implement intersect/compatible functions
Implemented a new intersect and compatible callback function
fetching start offset from backend drm buddy allocator.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-3-Arunpravin.PaneerSelvam@amd.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c index 28ec5f8ac1c1..d1a2619fa89f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c @@ -721,6 +721,72 @@ uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr) } /** + * amdgpu_vram_mgr_intersects - test each drm buddy block for intersection + * + * @man: TTM memory type manager + * @res: The resource to test + * @place: The place to test against + * @size: Size of the new allocation + * + * Test each drm buddy block for intersection for eviction decision. + */ +static bool amdgpu_vram_mgr_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &mgr->blocks, link) { + unsigned long fpfn = + amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT); + + if (place->fpfn < lpfn && + (place->lpfn && place->lpfn > fpfn)) + return true; + } + + return false; +} + +/** + * amdgpu_vram_mgr_compatible - test each drm buddy block for compatibility + * + * @man: TTM memory type manager + * @res: The resource to test + * @place: The place to test against + * @size: Size of the new allocation + * + * Test each drm buddy block for placement compatibility. + */ +static bool amdgpu_vram_mgr_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &mgr->blocks, link) { + unsigned long fpfn = + amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT); + + if (fpfn < place->fpfn || + (place->lpfn && lpfn > place->lpfn)) + return false; + } + + return true; +} + +/** * amdgpu_vram_mgr_debug - dump VRAM table * * @man: TTM memory type manager @@ -753,6 +819,8 @@ static void amdgpu_vram_mgr_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func amdgpu_vram_mgr_func = { .alloc = amdgpu_vram_mgr_new, .free = amdgpu_vram_mgr_del, + .intersects = amdgpu_vram_mgr_intersects, + .compatible = amdgpu_vram_mgr_compatible, .debug = amdgpu_vram_mgr_debug }; |