| Gustavo Padovan | d4cab38 | 2016-04-28 10:46:54 -0300 | [diff] [blame^] | 1 | /* |
| 2 | * include/linux/sync_file.h |
| 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_FILE_H |
| 14 | #define _LINUX_SYNC_FILE_H |
| 15 | |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/kref.h> |
| 18 | #include <linux/ktime.h> |
| 19 | #include <linux/list.h> |
| 20 | #include <linux/spinlock.h> |
| 21 | #include <linux/fence.h> |
| 22 | |
| 23 | struct sync_file_cb { |
| 24 | struct fence_cb cb; |
| 25 | struct fence *fence; |
| 26 | struct sync_file *sync_file; |
| 27 | }; |
| 28 | |
| 29 | /** |
| 30 | * struct sync_file - sync file to export to the userspace |
| 31 | * @file: file representing this fence |
| 32 | * @kref: reference count on fence. |
| 33 | * @name: name of sync_file. Useful for debugging |
| 34 | * @sync_file_list: membership in global file list |
| 35 | * @num_fences number of sync_pts in the fence |
| 36 | * @wq: wait queue for fence signaling |
| 37 | * @status: 0: signaled, >0:active, <0: error |
| 38 | * @cbs: sync_pts callback information |
| 39 | */ |
| 40 | struct sync_file { |
| 41 | struct file *file; |
| 42 | struct kref kref; |
| 43 | char name[32]; |
| 44 | #ifdef CONFIG_DEBUG_FS |
| 45 | struct list_head sync_file_list; |
| 46 | #endif |
| 47 | int num_fences; |
| 48 | |
| 49 | wait_queue_head_t wq; |
| 50 | atomic_t status; |
| 51 | |
| 52 | struct sync_file_cb cbs[]; |
| 53 | }; |
| 54 | |
| 55 | struct sync_file *sync_file_create(struct fence *fence); |
| 56 | |
| 57 | #endif /* _LINUX_SYNC_H */ |