diff options
| author | Marek Olšák <marek.olsak@amd.com> | 2014-03-02 00:56:18 +0100 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2014-03-03 10:54:19 +0100 |
| commit | 67e8e3f970ad747d3c854fb40f8ec0cecedd9089 (patch) | |
| tree | 9bbf509dfde9cd4a11fb35aca45a2ac3f35c7b69 /drivers/gpu/drm/radeon/radeon_ttm.c | |
| parent | bda72d58a20120aee1f78eb17d7eddb955d6696b (diff) | |
drm/radeon: track memory statistics about VRAM and GTT usage and buffer moves v2
The statistics are:
- VRAM usage in bytes
- GTT usage in bytes
- number of bytes moved by TTM
The last one is actually a counter, so you need to sample it before and after
command submission and take the difference.
This is useful for finding performance bottlenecks. Userspace queries are
also added.
v2: use atomic64_t
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 77f5b0c3edb8..60dfce889ecf 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -406,8 +406,14 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, if (r) { memcpy: r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); + if (r) { + return r; + } } - return r; + + /* update statistics */ + atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &rdev->num_bytes_moved); + return 0; } static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |