diff options
author | Christian König <christian.koenig@amd.com> | 2017-01-10 14:08:28 +0100 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2017-01-27 12:20:33 -0500 |
commit | cf6c467d67d319e239aec57d7ba31cb9946f29bf (patch) | |
tree | 8e6ab6e828cda2485ec80cd05b70777142725ab2 /drivers/gpu/drm/ttm | |
parent | 2ee7fc92cfd327fe41377f64a7f04ddc30c851e7 (diff) | |
download | op-kernel-dev-cf6c467d67d319e239aec57d7ba31cb9946f29bf.zip op-kernel-dev-cf6c467d67d319e239aec57d7ba31cb9946f29bf.tar.gz |
drm/ttm: add BO priorities for the LRUs
This way the driver can specify a priority for a BO which has the effect that
a BO is only evicted when all other BOs with a lower priority are evicted
first.
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger.He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 67 |
1 files changed, 44 insertions, 23 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 89bbcf0..0b287d8 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -242,13 +242,13 @@ EXPORT_SYMBOL(ttm_bo_move_to_lru_tail); struct list_head *ttm_bo_default_lru_tail(struct ttm_buffer_object *bo) { - return bo->bdev->man[bo->mem.mem_type].lru.prev; + return bo->bdev->man[bo->mem.mem_type].lru[bo->priority].prev; } EXPORT_SYMBOL(ttm_bo_default_lru_tail); struct list_head *ttm_bo_default_swap_lru_tail(struct ttm_buffer_object *bo) { - return bo->glob->swap_lru.prev; + return bo->glob->swap_lru[bo->priority].prev; } EXPORT_SYMBOL(ttm_bo_default_swap_lru_tail); @@ -741,20 +741,27 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, struct ttm_mem_type_manager *man = &bdev->man[mem_type]; struct ttm_buffer_object *bo; int ret = -EBUSY, put_count; + unsigned i; spin_lock(&glob->lru_lock); - list_for_each_entry(bo, &man->lru, lru) { - ret = __ttm_bo_reserve(bo, false, true, NULL); - if (ret) - continue; + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { + list_for_each_entry(bo, &man->lru[i], lru) { + ret = __ttm_bo_reserve(bo, false, true, NULL); + if (ret) + continue; - if (place && !bdev->driver->eviction_valuable(bo, place)) { - __ttm_bo_unreserve(bo); - ret = -EBUSY; - continue; + if (place && !bdev->driver->eviction_valuable(bo, + place)) { + __ttm_bo_unreserve(bo); + ret = -EBUSY; + continue; + } + + break; } - break; + if (!ret) + break; } if (ret) { @@ -1197,6 +1204,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev, } atomic_inc(&bo->glob->bo_count); drm_vma_node_reset(&bo->vma_node); + bo->priority = 0; /* * For ttm_bo_type_device buffers, allocate @@ -1297,18 +1305,21 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, struct ttm_bo_global *glob = bdev->glob; struct dma_fence *fence; int ret; + unsigned i; /* * Can't use standard list traversal since we're unlocking. */ spin_lock(&glob->lru_lock); - while (!list_empty(&man->lru)) { - spin_unlock(&glob->lru_lock); - ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); - if (ret) - return ret; - spin_lock(&glob->lru_lock); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { + while (!list_empty(&man->lru[i])) { + spin_unlock(&glob->lru_lock); + ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); + if (ret) + return ret; + spin_lock(&glob->lru_lock); + } } spin_unlock(&glob->lru_lock); @@ -1385,6 +1396,7 @@ int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, { int ret = -EINVAL; struct ttm_mem_type_manager *man; + unsigned i; BUG_ON(type >= TTM_NUM_MEM_TYPES); man = &bdev->man[type]; @@ -1410,7 +1422,8 @@ int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, man->use_type = true; man->size = p_size; - INIT_LIST_HEAD(&man->lru); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) + INIT_LIST_HEAD(&man->lru[i]); man->move = NULL; return 0; @@ -1442,6 +1455,7 @@ int ttm_bo_global_init(struct drm_global_reference *ref) container_of(ref, struct ttm_bo_global_ref, ref); struct ttm_bo_global *glob = ref->object; int ret; + unsigned i; mutex_init(&glob->device_list_mutex); spin_lock_init(&glob->lru_lock); @@ -1453,7 +1467,8 @@ int ttm_bo_global_init(struct drm_global_reference *ref) goto out_no_drp; } - INIT_LIST_HEAD(&glob->swap_lru); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) + INIT_LIST_HEAD(&glob->swap_lru[i]); INIT_LIST_HEAD(&glob->device_list); ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); @@ -1512,8 +1527,9 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev) if (list_empty(&bdev->ddestroy)) TTM_DEBUG("Delayed destroy list was clean\n"); - if (list_empty(&bdev->man[0].lru)) - TTM_DEBUG("Swap list was clean\n"); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) + if (list_empty(&bdev->man[0].lru[0])) + TTM_DEBUG("Swap list %d was clean\n", i); spin_unlock(&glob->lru_lock); drm_vma_offset_manager_destroy(&bdev->vma_manager); @@ -1665,10 +1681,15 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) int ret = -EBUSY; int put_count; uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); + unsigned i; spin_lock(&glob->lru_lock); - list_for_each_entry(bo, &glob->swap_lru, swap) { - ret = __ttm_bo_reserve(bo, false, true, NULL); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { + list_for_each_entry(bo, &glob->swap_lru[i], swap) { + ret = __ttm_bo_reserve(bo, false, true, NULL); + if (!ret) + break; + } if (!ret) break; } |