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| author | Maarten Lankhorst | 2014-01-21 13:07:01 +0100 |
|---|---|---|
| committer | Maarten Lankhorst | 2014-09-01 10:16:43 +0200 |
| commit | 7040138ff85501931138970663a988f48c0666f0 (patch) | |
| tree | 66152b3f394328070d4dbe409fd5fddbb5bc069e /drivers/gpu/drm/ttm | |
| parent | drm/nouveau: require reservations for nouveau_fence_sync and nouveau_bo_fence (diff) | |
| download | kernel-qcow2-linux-7040138ff85501931138970663a988f48c0666f0.tar.gz kernel-qcow2-linux-7040138ff85501931138970663a988f48c0666f0.tar.xz kernel-qcow2-linux-7040138ff85501931138970663a988f48c0666f0.zip | |
drm/ttm: call ttm_bo_wait while inside a reservation
This is the last remaining function that doesn't use the reservation
lock completely to fence off access to a buffer.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Diffstat (limited to 'drivers/gpu/drm/ttm')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index b992ec3c318a..4f1bc948bda0 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -503,17 +503,6 @@ static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, if (ret) return ret; - /* - * remove sync_obj with ttm_bo_wait, the wait should be - * finished, and no new wait object should have been added. - */ - spin_lock(&bdev->fence_lock); - ret = ttm_bo_wait(bo, false, false, true); - WARN_ON(ret); - spin_unlock(&bdev->fence_lock); - if (ret) - return ret; - spin_lock(&glob->lru_lock); ret = __ttm_bo_reserve(bo, false, true, false, NULL); @@ -529,8 +518,16 @@ static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, spin_unlock(&glob->lru_lock); return 0; } - } else - spin_unlock(&bdev->fence_lock); + + /* + * remove sync_obj with ttm_bo_wait, the wait should be + * finished, and no new wait object should have been added. + */ + spin_lock(&bdev->fence_lock); + ret = ttm_bo_wait(bo, false, false, true); + WARN_ON(ret); + } + spin_unlock(&bdev->fence_lock); if (ret || unlikely(list_empty(&bo->ddestroy))) { __ttm_bo_unreserve(bo); @@ -1524,6 +1521,8 @@ int ttm_bo_wait(struct ttm_buffer_object *bo, void *sync_obj; int ret = 0; + lockdep_assert_held(&bo->resv->lock.base); + if (likely(bo->sync_obj == NULL)) return 0; |