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drm/amdgpu: report the number of bytes moved at buffer creation

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Like ttm_bo_validate(), ttm_bo_init() might need to move BO and
the number of bytes moved by TTM should be reported. This can help
the throttle buffer migration mechanism to make a better decision.

v2: fix computation

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Samuel Pitoiset 2017-02-09 11:33:37 +01:00 committed by Alex Deucher
parent 38fc4856ad
commit fad061270a
3 changed files with 8 additions and 2 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1709,6 +1709,7 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data);
int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type,
u32 ip_instance, u32 ring,
struct amdgpu_ring **out_ring);
void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes);
void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain);
bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo);
int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages);

3
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -344,8 +344,7 @@ static u64 amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev)
* submission. This can result in a debt that can stop buffer migrations
* temporarily.
*/
static void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev,
u64 num_bytes)
void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes)
{
spin_lock(&adev->mm_stats.lock);
adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);

6
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
View File

@ -323,6 +323,7 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
struct amdgpu_bo *bo;
enum ttm_bo_type type;
unsigned long page_align;
u64 initial_bytes_moved;
size_t acc_size;
int r;
@ -401,10 +402,15 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
locked = ww_mutex_trylock(&bo->tbo.ttm_resv.lock);
WARN_ON(!locked);
}
initial_bytes_moved = atomic64_read(&adev->num_bytes_moved);
r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,
&bo->placement, page_align, !kernel, NULL,
acc_size, sg, resv ? resv : &bo->tbo.ttm_resv,
&amdgpu_ttm_bo_destroy);
amdgpu_cs_report_moved_bytes(adev,
atomic64_read(&adev->num_bytes_moved) - initial_bytes_moved);
if (unlikely(r != 0)) {
if (!resv)
ww_mutex_unlock(&bo->tbo.resv->lock);