diff options
author | Sean Paul <seanpaul@chromium.org> | 2017-07-17 11:43:05 -0400 |
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committer | Sean Paul <seanpaul@chromium.org> | 2017-07-17 11:56:07 -0400 |
commit | ef434a0c2ce765ad33026375db7d23aebd5e9532 (patch) | |
tree | 4bdac59f0bac3a6508741e6bd62da6e770fc3bc1 /drivers/dma-buf/sync_file.c | |
parent | 76250f2b743b72cb685cc51ac0cdabb32957180b (diff) | |
parent | 1ed134e6526b1b513a14fba938f6d96aa1c7f3dd (diff) | |
download | linux-ef434a0c2ce765ad33026375db7d23aebd5e9532.tar.bz2 |
Merge branch 'drm-misc-next-fixes' into drm-misc-fixes
Pick up
1ed134e6526b drm/vc4: Fix VBLANK handling in crtc->enable() path
From drm-misc-next-fixes, it was applied after the last pull request
was sent from that branch. We'll send it through drm-fixes instead.
Diffstat (limited to 'drivers/dma-buf/sync_file.c')
-rw-r--r-- | drivers/dma-buf/sync_file.c | 52 |
1 files changed, 34 insertions, 18 deletions
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c index 95f259b719fc..d7e219d2669d 100644 --- a/drivers/dma-buf/sync_file.c +++ b/drivers/dma-buf/sync_file.c @@ -41,8 +41,6 @@ static struct sync_file *sync_file_alloc(void) if (IS_ERR(sync_file->file)) goto err; - kref_init(&sync_file->kref); - init_waitqueue_head(&sync_file->wq); INIT_LIST_HEAD(&sync_file->cb.node); @@ -82,11 +80,6 @@ struct sync_file *sync_file_create(struct dma_fence *fence) sync_file->fence = dma_fence_get(fence); - snprintf(sync_file->name, sizeof(sync_file->name), "%s-%s%llu-%d", - fence->ops->get_driver_name(fence), - fence->ops->get_timeline_name(fence), fence->context, - fence->seqno); - return sync_file; } EXPORT_SYMBOL(sync_file_create); @@ -131,6 +124,36 @@ struct dma_fence *sync_file_get_fence(int fd) } EXPORT_SYMBOL(sync_file_get_fence); +/** + * sync_file_get_name - get the name of the sync_file + * @sync_file: sync_file to get the fence from + * @buf: destination buffer to copy sync_file name into + * @len: available size of destination buffer. + * + * Each sync_file may have a name assigned either by the user (when merging + * sync_files together) or created from the fence it contains. In the latter + * case construction of the name is deferred until use, and so requires + * sync_file_get_name(). + * + * Returns: a string representing the name. + */ +char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len) +{ + if (sync_file->user_name[0]) { + strlcpy(buf, sync_file->user_name, len); + } else { + struct dma_fence *fence = sync_file->fence; + + snprintf(buf, len, "%s-%s%llu-%d", + fence->ops->get_driver_name(fence), + fence->ops->get_timeline_name(fence), + fence->context, + fence->seqno); + } + + return buf; +} + static int sync_file_set_fence(struct sync_file *sync_file, struct dma_fence **fences, int num_fences) { @@ -268,7 +291,7 @@ static struct sync_file *sync_file_merge(const char *name, struct sync_file *a, goto err; } - strlcpy(sync_file->name, name, sizeof(sync_file->name)); + strlcpy(sync_file->user_name, name, sizeof(sync_file->user_name)); return sync_file; err: @@ -277,22 +300,15 @@ err: } -static void sync_file_free(struct kref *kref) +static int sync_file_release(struct inode *inode, struct file *file) { - struct sync_file *sync_file = container_of(kref, struct sync_file, - kref); + struct sync_file *sync_file = file->private_data; if (test_bit(POLL_ENABLED, &sync_file->fence->flags)) dma_fence_remove_callback(sync_file->fence, &sync_file->cb); dma_fence_put(sync_file->fence); kfree(sync_file); -} - -static int sync_file_release(struct inode *inode, struct file *file) -{ - struct sync_file *sync_file = file->private_data; - kref_put(&sync_file->kref, sync_file_free); return 0; } @@ -428,7 +444,7 @@ static long sync_file_ioctl_fence_info(struct sync_file *sync_file, } no_fences: - strlcpy(info.name, sync_file->name, sizeof(info.name)); + sync_file_get_name(sync_file, info.name, sizeof(info.name)); info.status = dma_fence_is_signaled(sync_file->fence); info.num_fences = num_fences; |