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/dma-fence.h> 22 #include <linux/dma-fence-array.h> 23 24 /** 25 * struct sync_file - sync file to export to the userspace 26 * @file: file representing this fence 27 * @kref: reference count on fence. 28 * @name: name of sync_file. Useful for debugging 29 * @sync_file_list: membership in global file list 30 * @wq: wait queue for fence signaling 31 * @fence: fence with the fences in the sync_file 32 * @cb: fence callback information 33 */ 34 struct sync_file { 35 struct file *file; 36 struct kref kref; 37 char name[32]; 38 #ifdef CONFIG_DEBUG_FS 39 struct list_head sync_file_list; 40 #endif 41 42 wait_queue_head_t wq; 43 44 struct dma_fence *fence; 45 struct dma_fence_cb cb; 46 }; 47 48 #define POLL_ENABLED DMA_FENCE_FLAG_USER_BITS 49 50 struct sync_file *sync_file_create(struct dma_fence *fence); 51 struct dma_fence *sync_file_get_fence(int fd); 52 53 #endif /* _LINUX_SYNC_H */ 54