/*
* 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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