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/*
* include/linux/sync_file.h
*
* Copyright (C) 2012 Google, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _LINUX_SYNC_FILE_H
#define _LINUX_SYNC_FILE_H
#include <linux/types.h>
#include <linux/kref.h>
#include <linux/ktime.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/fence.h>
struct sync_file_cb {
struct fence_cb cb;
struct fence *fence;
struct sync_file *sync_file;
};
/**
* struct sync_file - sync file to export to the userspace
* @file: file representing this fence
* @kref: reference count on fence.
* @name: name of sync_file. Useful for debugging
* @sync_file_list: membership in global file list
* @num_fences: number of sync_pts in the fence
* @wq: wait queue for fence signaling
* @status: 0: signaled, >0:active, <0: error
* @cbs: sync_pts callback information
*/
struct sync_file {
struct file *file;
struct kref kref;
char name[32];
#ifdef CONFIG_DEBUG_FS
struct list_head sync_file_list;
#endif
int num_fences;
wait_queue_head_t wq;
atomic_t status;
struct sync_file_cb cbs[];
};
struct sync_file *sync_file_create(struct fence *fence);
#endif /* _LINUX_SYNC_H */
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