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drm/ttm: switch to per device LRU lock

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Instead of having a global lock for potentially less contention.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/424010/
This commit is contained in:
Christian König
2020-10-06 17:26:42 +02:00
parent f9e2a03e11
commit a1f091f8ef
8 changed files with 43 additions and 56 deletions
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9
drivers/gpu/drm/ttm/ttm_resource.c
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@@ -91,7 +91,6 @@ int ttm_resource_manager_evict_all(struct ttm_device *bdev,
.no_wait_gpu = false,
.force_alloc = true
};
struct ttm_global *glob = &ttm_glob;
struct dma_fence *fence;
int ret;
unsigned i;
@@ -100,18 +99,18 @@ int ttm_resource_manager_evict_all(struct ttm_device *bdev,
* Can't use standard list traversal since we're unlocking.
*/
spin_lock(&glob->lru_lock);
spin_lock(&bdev->lru_lock);
for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
while (!list_empty(&man->lru[i])) {
spin_unlock(&glob->lru_lock);
spin_unlock(&bdev->lru_lock);
ret = ttm_mem_evict_first(bdev, man, NULL, &ctx,
NULL);
if (ret)
return ret;
spin_lock(&glob->lru_lock);
spin_lock(&bdev->lru_lock);
}
}
spin_unlock(&glob->lru_lock);
spin_unlock(&bdev->lru_lock);
spin_lock(&man->move_lock);
fence = dma_fence_get(man->move);