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authorMarek Olšák <marek.olsak@amd.com>2014-03-02 00:56:18 +0100
committerChristian König <christian.koenig@amd.com>2014-03-03 10:54:19 +0100
commit67e8e3f970ad747d3c854fb40f8ec0cecedd9089 (patch)
tree9bbf509dfde9cd4a11fb35aca45a2ac3f35c7b69 /drivers/gpu/drm/radeon/radeon_ttm.c
parentbda72d58a20120aee1f78eb17d7eddb955d6696b (diff)
downloadop-kernel-dev-67e8e3f970ad747d3c854fb40f8ec0cecedd9089.zip
op-kernel-dev-67e8e3f970ad747d3c854fb40f8ec0cecedd9089.tar.gz
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.c8
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 77f5b0c..60dfce8 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)
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