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/ktime.h> 18 #include <linux/list.h> 19 #include <linux/spinlock.h> 20 #include <linux/dma-fence.h> 21 #include <linux/dma-fence-array.h> 22 23 /** 24 * struct sync_file - sync file to export to the userspace 25 * @file: file representing this fence 26 * @name: name of sync_file. Useful for debugging 27 * @sync_file_list: membership in global file list 28 * @wq: wait queue for fence signaling 29 * @fence: fence with the fences in the sync_file 30 * @cb: fence callback information 31 */ 32 struct sync_file { 33 struct file *file; 34 char name[32]; 35 #ifdef CONFIG_DEBUG_FS 36 struct list_head sync_file_list; 37 #endif 38 39 wait_queue_head_t wq; 40 41 struct dma_fence *fence; 42 struct dma_fence_cb cb; 43 }; 44 45 #define POLL_ENABLED DMA_FENCE_FLAG_USER_BITS 46 47 struct sync_file *sync_file_create(struct dma_fence *fence); 48 struct dma_fence *sync_file_get_fence(int fd); 49 50 #endif /* _LINUX_SYNC_H */ 51