diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem_submit.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index a03bdded1a15..ec5aa6932ea1 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -384,6 +384,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) static int submit_pin_objects(struct msm_gem_submit *submit) { + struct msm_drm_private *priv = submit->dev->dev_private; int i, ret = 0; submit->valid = true; @@ -403,7 +404,7 @@ static int submit_pin_objects(struct msm_gem_submit *submit) if (ret) break; - submit->bos[i].flags |= BO_OBJ_PINNED | BO_VMA_PINNED; + submit->bos[i].flags |= BO_VMA_PINNED; submit->bos[i].vma = vma; if (vma->iova == submit->bos[i].iova) { @@ -416,6 +417,20 @@ static int submit_pin_objects(struct msm_gem_submit *submit) } } + /* + * A second loop while holding the LRU lock (a) avoids acquiring/dropping + * the LRU lock for each individual bo, while (b) avoiding holding the + * LRU lock while calling msm_gem_pin_vma_locked() (which could trigger + * get_pages() which could trigger reclaim.. and if we held the LRU lock + * could trigger deadlock with the shrinker). + */ + mutex_lock(&priv->lru.lock); + for (i = 0; i < submit->nr_bos; i++) { + msm_gem_pin_obj_locked(submit->bos[i].obj); + submit->bos[i].flags |= BO_OBJ_PINNED; + } + mutex_unlock(&priv->lru.lock); + return ret; } |