Release 4.18 drivers/dma-buf/sync_debug.h

/*
 * 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);
}

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Maarten Lankhorst
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Chris Wilson
3
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2
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Gustavo Fernando Padovan
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7.41%
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Erik Gilling
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/**
 * 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;
};

extern const struct file_operations sw_sync_debugfs_fops;

void sync_timeline_debug_add(struct sync_timeline *obj);
void sync_timeline_debug_remove(struct sync_timeline *obj);
void sync_file_debug_add(struct sync_file *fence);
void sync_file_debug_remove(struct sync_file *fence);
void sync_dump(void);

#endif /* _LINUX_SYNC_H */
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Maarten Lankhorst
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1
6.25%
Erik Gilling
42
26.42%
4
25.00%
Gustavo Fernando Padovan
28
17.61%
7
43.75%
Chris Wilson
22
13.84%
3
18.75%
Linus Torvalds
3
1.89%
1
6.25%
Total
159
100.00%
16
100.00%
Directory: drivers/dma-buf

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