2013-02-28 17:42:57 -07:00
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/*
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* include/linux/sync.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_H
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#define _LINUX_SYNC_H
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#include <linux/list.h>
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#include <linux/spinlock.h>
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2014-07-01 04:57:31 -06:00
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#include <linux/fence.h>
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2013-02-28 17:42:57 -07:00
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2016-04-28 07:46:57 -06:00
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#include <linux/sync_file.h>
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#include <uapi/linux/sync_file.h>
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2014-02-17 14:58:32 -07:00
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2013-02-28 17:42:57 -07:00
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/**
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* struct sync_timeline - sync object
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2013-02-28 17:43:11 -07:00
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* @kref: reference count on fence.
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2013-02-28 17:42:57 -07:00
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* @name: name of the sync_timeline. Useful for debugging
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* @child_list_head: list of children sync_pts for this sync_timeline
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2016-05-31 13:59:09 -06:00
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* @child_list_lock: lock protecting @child_list_head and fence.status
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2013-02-28 17:42:57 -07:00
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* @active_list_head: list of active (unsignaled/errored) sync_pts
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2013-02-28 17:43:00 -07:00
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* @sync_timeline_list: membership in global sync_timeline_list
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2013-02-28 17:42:57 -07:00
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*/
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struct sync_timeline {
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2013-02-28 17:43:11 -07:00
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struct kref kref;
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2013-02-28 17:42:57 -07:00
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char name[32];
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/* protected by child_list_lock */
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2014-07-01 04:57:31 -06:00
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int context, value;
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2013-02-28 17:42:57 -07:00
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struct list_head child_list_head;
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spinlock_t child_list_lock;
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struct list_head active_list_head;
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2013-02-28 17:43:00 -07:00
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2014-07-01 04:57:31 -06:00
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#ifdef CONFIG_DEBUG_FS
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2013-02-28 17:43:00 -07:00
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struct list_head sync_timeline_list;
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2014-07-01 04:57:31 -06:00
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#endif
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2013-02-28 17:42:57 -07:00
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};
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2016-01-21 05:49:21 -07:00
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static inline struct sync_timeline *fence_parent(struct fence *fence)
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2014-07-01 04:57:31 -06:00
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{
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2016-01-21 05:49:21 -07:00
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return container_of(fence->lock, struct sync_timeline,
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2014-07-01 04:57:31 -06:00
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child_list_lock);
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}
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2013-02-28 17:42:59 -07:00
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2016-05-31 13:59:04 -06:00
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/**
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* struct sync_pt - sync_pt object
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* @base: base fence object
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* @child_list: sync timeline child's list
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* @active_list: sync timeline active child's list
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*/
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struct sync_pt {
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struct fence base;
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struct list_head child_list;
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struct list_head active_list;
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};
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2014-07-01 04:57:31 -06:00
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#ifdef CONFIG_DEBUG_FS
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2016-05-31 13:59:05 -06:00
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extern const struct file_operations sw_sync_debugfs_fops;
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2015-08-10 15:51:16 -06:00
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void sync_timeline_debug_add(struct sync_timeline *obj);
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void sync_timeline_debug_remove(struct sync_timeline *obj);
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2016-01-21 05:49:19 -07:00
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void sync_file_debug_add(struct sync_file *fence);
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void sync_file_debug_remove(struct sync_file *fence);
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2015-08-10 15:51:16 -06:00
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void sync_dump(void);
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2014-07-01 04:57:31 -06:00
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#else
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# define sync_timeline_debug_add(obj)
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# define sync_timeline_debug_remove(obj)
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2016-01-21 05:49:19 -07:00
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# define sync_file_debug_add(fence)
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# define sync_file_debug_remove(fence)
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2014-07-01 04:57:31 -06:00
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# define sync_dump()
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#endif
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2013-02-28 17:42:57 -07:00
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#endif /* _LINUX_SYNC_H */
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