linux-imx

/*

 * Sync File validation framework and debug infomation

 *

 * 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_H

#define _LINUX_SYNC_H

​

#include <linux/list.h>

#include <linux/rbtree.h>

#include <linux/spinlock.h>

#include <linux/dma-fence.h>

​

#include <linux/sync_file.h>

#include <uapi/linux/sync_file.h>

​

/**

 * struct sync_timeline - sync object

 * @kref:       reference count on fence.

 * @name:       name of the sync_timeline. Useful for debugging

 * @lock:       lock protecting @pt_list and @value

 * @pt_tree:        rbtree of active (unsignaled/errored) sync_pts

 * @pt_list:        list of active (unsignaled/errored) sync_pts

 * @sync_timeline_list: membership in global sync_timeline_list

 */

struct sync_timeline {

    struct kref     kref;

    char            name[32];

​

    /* protected by lock */

    u64         context;

    int         value;

​

    struct rb_root      pt_tree;

    struct list_head    pt_list;

    spinlock_t      lock;

​

    struct list_head    sync_timeline_list;

};

​

static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence)

{

    return container_of(fence->lock, struct sync_timeline, lock);

}

​

/**

 * struct sync_pt - sync_pt object

 * @base: base fence object

 * @link: link on the sync timeline's list

 * @node: node in the sync timeline's tree

 */

struct sync_pt {

    struct dma_fence base;

    struct list_head link;

    struct rb_node node;

};