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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/ktime.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/dma-fence.h>
#include <linux/dma-fence-array.h>
/**
* struct sync_file - sync file to export to the userspace
* @file: file representing this fence
* @sync_file_list: membership in global file list
* @wq: wait queue for fence signaling
* @flags: flags for the sync_file
* @fence: fence with the fences in the sync_file
* @cb: fence callback information
*
* flags:
* POLL_ENABLED: whether userspace is currently poll()'ing or not
*/
struct sync_file {
struct file *file;
/**
* @user_name:
*
* Name of the sync file provided by userspace, for merged fences.
* Otherwise generated through driver callbacks (in which case the
* entire array is 0).
*/
char user_name[32];
#ifdef CONFIG_DEBUG_FS
struct list_head sync_file_list;
#endif
wait_queue_head_t wq;
unsigned long flags;
struct dma_fence *fence;
struct dma_fence_cb cb;
};
#define POLL_ENABLED 0
struct sync_file *sync_file_create(struct dma_fence *fence);
struct dma_fence *sync_file_get_fence(int fd);
char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len);
#endif /* _LINUX_SYNC_H */
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