| 1 | /* |
| 2 | * Sync File validation framework and debug infomation |
| 3 | * |
| 4 | * Copyright (C) 2012 Google, Inc. |
| 5 | * |
| 6 | * This program is distributed in the hope that it will be useful, |
| 7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 9 | * GNU General Public License for more details. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #ifndef _LINUX_SYNC_H |
| 14 | #define _LINUX_SYNC_H |
| 15 | |
| 16 | #include <linux/list.h> |
| 17 | #include <linux/rbtree.h> |
| 18 | #include <linux/spinlock.h> |
| 19 | #include <linux/dma-fence.h> |
| 20 | |
| 21 | #include <linux/sync_file.h> |
| 22 | #include <uapi/linux/sync_file.h> |
| 23 | |
| 24 | /** |
| 25 | * struct sync_timeline - sync object |
| 26 | * @kref: reference count on fence. |
| 27 | * @name: name of the sync_timeline. Useful for debugging |
| 28 | * @lock: lock protecting @pt_list and @value |
| 29 | * @pt_tree: rbtree of active (unsignaled/errored) sync_pts |
| 30 | * @pt_list: list of active (unsignaled/errored) sync_pts |
| 31 | * @sync_timeline_list: membership in global sync_timeline_list |
| 32 | */ |
| 33 | struct sync_timeline { |
| 34 | struct kref kref; |
| 35 | char name[32]; |
| 36 | |
| 37 | /* protected by lock */ |
| 38 | u64 context; |
| 39 | int value; |
| 40 | |
| 41 | struct rb_root pt_tree; |
| 42 | struct list_head pt_list; |
| 43 | spinlock_t lock; |
| 44 | |
| 45 | struct list_head sync_timeline_list; |
| 46 | }; |
| 47 | |
| 48 | static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence) |
| 49 | { |
| 50 | return container_of(fence->lock, struct sync_timeline, lock); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * struct sync_pt - sync_pt object |
| 55 | * @base: base fence object |
| 56 | * @link: link on the sync timeline's list |
| 57 | * @node: node in the sync timeline's tree |
| 58 | */ |
| 59 | struct sync_pt { |
| 60 | struct dma_fence base; |
| 61 | struct list_head link; |
| 62 | struct rb_node node; |
| 63 | }; |
| 64 | |
| 65 | extern const struct file_operations sw_sync_debugfs_fops; |
| 66 | |
| 67 | void sync_timeline_debug_add(struct sync_timeline *obj); |
| 68 | void sync_timeline_debug_remove(struct sync_timeline *obj); |
| 69 | void sync_file_debug_add(struct sync_file *fence); |
| 70 | void sync_file_debug_remove(struct sync_file *fence); |
| 71 | void sync_dump(void); |
| 72 | |
| 73 | #endif /* _LINUX_SYNC_H */ |