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 | |
72 | #endif /* _LINUX_SYNC_H */ |
73 | |