/*
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* include/linux/sync_file.h
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*
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* Copyright (C) 2012 Google, Inc.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_SYNC_FILE_H
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#define _LINUX_SYNC_FILE_H
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#include <linux/types.h>
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#include <linux/ktime.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/dma-fence.h>
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#include <linux/dma-fence-array.h>
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/**
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* struct sync_file - sync file to export to the userspace
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* @file: file representing this fence
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* @sync_file_list: membership in global file list
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* @wq: wait queue for fence signaling
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* @flags: flags for the sync_file
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* @fence: fence with the fences in the sync_file
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* @cb: fence callback information
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*
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* flags:
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* POLL_ENABLED: whether userspace is currently poll()'ing or not
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*/
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struct sync_file {
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struct file *file;
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/**
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* @user_name:
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*
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* Name of the sync file provided by userspace, for merged fences.
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* Otherwise generated through driver callbacks (in which case the
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* entire array is 0).
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*/
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char user_name[32];
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#ifdef CONFIG_DEBUG_FS
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struct list_head sync_file_list;
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#endif
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wait_queue_head_t wq;
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unsigned long flags;
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struct dma_fence *fence;
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struct dma_fence_cb cb;
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};
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#define POLL_ENABLED 0
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struct sync_file *sync_file_create(struct dma_fence *fence);
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struct dma_fence *sync_file_get_fence(int fd);
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char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len);
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#endif /* _LINUX_SYNC_H */
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