sync: Remove duplicate sync drivertracking-linaro-android-3.10-llct-20130613.0tracking-linaro-android-3.10-llct-20130610.0tracking-linaro-android-3.10-llct-20130606.0

Now that the sync driver is upstream in staging, remove the
identical AOSP version from drivers/base.

Signed-off-by: John Stultz <john.stultz@linaro.org>

5 files changed, 0 insertions, 1735 deletions

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index b1f8ee1b1a82..07abd9d76f7f 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -292,30 +292,4 @@ config CMA_AREAS
 
 endif
 
-config SYNC
-	bool "Synchronization framework"
-	default n
-	select ANON_INODES
-	help
-	  This option enables the framework for synchronization between multiple
-	  drivers.  Sync implementations can take advantage of hardware
-	  synchronization built into devices like GPUs.
-
-config SW_SYNC
-	bool "Software synchronization objects"
-	default n
-	depends on SYNC
-	help
-	  A sync object driver that uses a 32bit counter to coordinate
-	  syncrhronization.  Useful when there is no hardware primitive backing
-	  the synchronization.
-
-config SW_SYNC_USER
-       bool "Userspace API for SW_SYNC"
-       default n
-       depends on SW_SYNC
-       help
-         Provides a user space API to the sw sync object.
-         *WARNING* improper use of this can result in deadlocking kernel
-	 drivers from userspace.
 endmenu
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 4d6a9d30ffa3..4e22ce3ed73d 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -23,8 +23,5 @@ obj-$(CONFIG_REGMAP)	+= regmap/
 obj-$(CONFIG_SOC_BUS) += soc.o
 obj-$(CONFIG_PINCTRL) += pinctrl.o
 
-obj-$(CONFIG_SYNC)	+= sync.o
-obj-$(CONFIG_SW_SYNC)	+= sw_sync.o
-
 ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
 
diff --git a/drivers/base/sw_sync.c b/drivers/base/sw_sync.c
deleted file mode 100644
index a93145fdcb2a..000000000000
--- a/drivers/base/sw_sync.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * drivers/base/sw_sync.c
- *
- * Copyright (C) 2012 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/sw_sync.h>
-#include <linux/syscalls.h>
-#include <linux/uaccess.h>
-
-static int sw_sync_cmp(u32 a, u32 b)
-{
-	if (a == b)
-		return 0;
-
-	return ((s32)a - (s32)b) < 0 ? -1 : 1;
-}
-
-struct sync_pt *sw_sync_pt_create(struct sw_sync_timeline *obj, u32 value)
-{
-	struct sw_sync_pt *pt;
-
-	pt = (struct sw_sync_pt *)
-		sync_pt_create(&obj->obj, sizeof(struct sw_sync_pt));
-
-	pt->value = value;
-
-	return (struct sync_pt *)pt;
-}
-EXPORT_SYMBOL(sw_sync_pt_create);
-
-static struct sync_pt *sw_sync_pt_dup(struct sync_pt *sync_pt)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *) sync_pt;
-	struct sw_sync_timeline *obj =
-		(struct sw_sync_timeline *)sync_pt->parent;
-
-	return (struct sync_pt *) sw_sync_pt_create(obj, pt->value);
-}
-
-static int sw_sync_pt_has_signaled(struct sync_pt *sync_pt)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *)sync_pt;
-	struct sw_sync_timeline *obj =
-		(struct sw_sync_timeline *)sync_pt->parent;
-
-	return sw_sync_cmp(obj->value, pt->value) >= 0;
-}
-
-static int sw_sync_pt_compare(struct sync_pt *a, struct sync_pt *b)
-{
-	struct sw_sync_pt *pt_a = (struct sw_sync_pt *)a;
-	struct sw_sync_pt *pt_b = (struct sw_sync_pt *)b;
-
-	return sw_sync_cmp(pt_a->value, pt_b->value);
-}
-
-static int sw_sync_fill_driver_data(struct sync_pt *sync_pt,
-				    void *data, int size)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *)sync_pt;
-
-	if (size < sizeof(pt->value))
-		return -ENOMEM;
-
-	memcpy(data, &pt->value, sizeof(pt->value));
-
-	return sizeof(pt->value);
-}
-
-static void sw_sync_timeline_value_str(struct sync_timeline *sync_timeline,
-				       char *str, int size)
-{
-	struct sw_sync_timeline *timeline =
-		(struct sw_sync_timeline *)sync_timeline;
-	snprintf(str, size, "%d", timeline->value);
-}
-
-static void sw_sync_pt_value_str(struct sync_pt *sync_pt,
-				       char *str, int size)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *)sync_pt;
-	snprintf(str, size, "%d", pt->value);
-}
-
-struct sync_timeline_ops sw_sync_timeline_ops = {
-	.driver_name = "sw_sync",
-	.dup = sw_sync_pt_dup,
-	.has_signaled = sw_sync_pt_has_signaled,
-	.compare = sw_sync_pt_compare,
-	.fill_driver_data = sw_sync_fill_driver_data,
-	.timeline_value_str = sw_sync_timeline_value_str,
-	.pt_value_str = sw_sync_pt_value_str,
-};
-
-
-struct sw_sync_timeline *sw_sync_timeline_create(const char *name)
-{
-	struct sw_sync_timeline *obj = (struct sw_sync_timeline *)
-		sync_timeline_create(&sw_sync_timeline_ops,
-				     sizeof(struct sw_sync_timeline),
-				     name);
-
-	return obj;
-}
-EXPORT_SYMBOL(sw_sync_timeline_create);
-
-void sw_sync_timeline_inc(struct sw_sync_timeline *obj, u32 inc)
-{
-	obj->value += inc;
-
-	sync_timeline_signal(&obj->obj);
-}
-EXPORT_SYMBOL(sw_sync_timeline_inc);
-
-#ifdef CONFIG_SW_SYNC_USER
-/* *WARNING*
- *
- * improper use of this can result in deadlocking kernel drivers from userspace.
- */
-
-/* opening sw_sync create a new sync obj */
-int sw_sync_open(struct inode *inode, struct file *file)
-{
-	struct sw_sync_timeline *obj;
-	char task_comm[TASK_COMM_LEN];
-
-	get_task_comm(task_comm, current);
-
-	obj = sw_sync_timeline_create(task_comm);
-	if (obj == NULL)
-		return -ENOMEM;
-
-	file->private_data = obj;
-
-	return 0;
-}
-
-int sw_sync_release(struct inode *inode, struct file *file)
-{
-	struct sw_sync_timeline *obj = file->private_data;
-	sync_timeline_destroy(&obj->obj);
-	return 0;
-}
-
-long sw_sync_ioctl_create_fence(struct sw_sync_timeline *obj, unsigned long arg)
-{
-	int fd = get_unused_fd();
-	int err;
-	struct sync_pt *pt;
-	struct sync_fence *fence;
-	struct sw_sync_create_fence_data data;
-
-	if (fd < 0)
-		return fd;
-
-	if (copy_from_user(&data, (void __user *)arg, sizeof(data))) {
-		err = -EFAULT;
-		goto err;
-	}
-
-	pt = sw_sync_pt_create(obj, data.value);
-	if (pt == NULL) {
-		err = -ENOMEM;
-		goto err;
-	}
-
-	data.name[sizeof(data.name) - 1] = '\0';
-	fence = sync_fence_create(data.name, pt);
-	if (fence == NULL) {
-		sync_pt_free(pt);
-		err = -ENOMEM;
-		goto err;
-	}
-
-	data.fence = fd;
-	if (copy_to_user((void __user *)arg, &data, sizeof(data))) {
-		sync_fence_put(fence);
-		err = -EFAULT;
-		goto err;
-	}
-
-	sync_fence_install(fence, fd);
-
-	return 0;
-
-err:
-	put_unused_fd(fd);
-	return err;
-}
-
-long sw_sync_ioctl_inc(struct sw_sync_timeline *obj, unsigned long arg)
-{
-	u32 value;
-
-	if (copy_from_user(&value, (void __user *)arg, sizeof(value)))
-		return -EFAULT;
-
-	sw_sync_timeline_inc(obj, value);
-
-	return 0;
-}
-
-long sw_sync_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct sw_sync_timeline *obj = file->private_data;
-
-	switch (cmd) {
-	case SW_SYNC_IOC_CREATE_FENCE:
-		return sw_sync_ioctl_create_fence(obj, arg);
-
-	case SW_SYNC_IOC_INC:
-		return sw_sync_ioctl_inc(obj, arg);
-
-	default:
-		return -ENOTTY;
-	}
-}
-
-static const struct file_operations sw_sync_fops = {
-	.owner = THIS_MODULE,
-	.open = sw_sync_open,
-	.release = sw_sync_release,
-	.unlocked_ioctl = sw_sync_ioctl,
-	.compat_ioctl = sw_sync_ioctl,
-};
-
-static struct miscdevice sw_sync_dev = {
-	.minor	= MISC_DYNAMIC_MINOR,
-	.name	= "sw_sync",
-	.fops	= &sw_sync_fops,
-};
-
-int __init sw_sync_device_init(void)
-{
-	return misc_register(&sw_sync_dev);
-}
-
-void __exit sw_sync_device_remove(void)
-{
-	misc_deregister(&sw_sync_dev);
-}
-
-module_init(sw_sync_device_init);
-module_exit(sw_sync_device_remove);
-
-#endif /* CONFIG_SW_SYNC_USER */
diff --git a/drivers/base/sync.c b/drivers/base/sync.c
deleted file mode 100644
index cefd6b9f4832..000000000000
--- a/drivers/base/sync.c
+++ /dev/null
@@ -1,1016 +0,0 @@
-/*
- * drivers/base/sync.c
- *
- * Copyright (C) 2012 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/debugfs.h>
-#include <linux/export.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/poll.h>
-#include <linux/sched.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/sync.h>
-#include <linux/uaccess.h>
-
-#include <linux/anon_inodes.h>
-
-#define CREATE_TRACE_POINTS
-#include <trace/events/sync.h>
-
-static void sync_fence_signal_pt(struct sync_pt *pt);
-static int _sync_pt_has_signaled(struct sync_pt *pt);
-static void sync_fence_free(struct kref *kref);
-static void sync_dump(void);
-
-static LIST_HEAD(sync_timeline_list_head);
-static DEFINE_SPINLOCK(sync_timeline_list_lock);
-
-static LIST_HEAD(sync_fence_list_head);
-static DEFINE_SPINLOCK(sync_fence_list_lock);
-
-struct sync_timeline *sync_timeline_create(const struct sync_timeline_ops *ops,
-					   int size, const char *name)
-{
-	struct sync_timeline *obj;
-	unsigned long flags;
-
-	if (size < sizeof(struct sync_timeline))
-		return NULL;
-
-	obj = kzalloc(size, GFP_KERNEL);
-	if (obj == NULL)
-		return NULL;
-
-	kref_init(&obj->kref);
-	obj->ops = ops;
-	strlcpy(obj->name, name, sizeof(obj->name));
-
-	INIT_LIST_HEAD(&obj->child_list_head);
-	spin_lock_init(&obj->child_list_lock);
-
-	INIT_LIST_HEAD(&obj->active_list_head);
-	spin_lock_init(&obj->active_list_lock);
-
-	spin_lock_irqsave(&sync_timeline_list_lock, flags);
-	list_add_tail(&obj->sync_timeline_list, &sync_timeline_list_head);
-	spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
-
-	return obj;
-}
-EXPORT_SYMBOL(sync_timeline_create);
-
-static void sync_timeline_free(struct kref *kref)
-{
-	struct sync_timeline *obj =
-		container_of(kref, struct sync_timeline, kref);
-	unsigned long flags;
-
-	if (obj->ops->release_obj)
-		obj->ops->release_obj(obj);
-
-	spin_lock_irqsave(&sync_timeline_list_lock, flags);
-	list_del(&obj->sync_timeline_list);
-	spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
-
-	kfree(obj);
-}
-
-void sync_timeline_destroy(struct sync_timeline *obj)
-{
-	obj->destroyed = true;
-
-	/*
-	 * If this is not the last reference, signal any children
-	 * that their parent is going away.
-	 */
-
-	if (!kref_put(&obj->kref, sync_timeline_free))
-		sync_timeline_signal(obj);
-}
-EXPORT_SYMBOL(sync_timeline_destroy);
-
-static void sync_timeline_add_pt(struct sync_timeline *obj, struct sync_pt *pt)
-{
-	unsigned long flags;
-
-	pt->parent = obj;
-
-	spin_lock_irqsave(&obj->child_list_lock, flags);
-	list_add_tail(&pt->child_list, &obj->child_list_head);
-	spin_unlock_irqrestore(&obj->child_list_lock, flags);
-}
-
-static void sync_timeline_remove_pt(struct sync_pt *pt)
-{
-	struct sync_timeline *obj = pt->parent;
-	unsigned long flags;
-
-	spin_lock_irqsave(&obj->active_list_lock, flags);
-	if (!list_empty(&pt->active_list))
-		list_del_init(&pt->active_list);
-	spin_unlock_irqrestore(&obj->active_list_lock, flags);
-
-	spin_lock_irqsave(&obj->child_list_lock, flags);
-	if (!list_empty(&pt->child_list)) {
-		list_del_init(&pt->child_list);
-	}
-	spin_unlock_irqrestore(&obj->child_list_lock, flags);
-}
-
-void sync_timeline_signal(struct sync_timeline *obj)
-{
-	unsigned long flags;
-	LIST_HEAD(signaled_pts);
-	struct list_head *pos, *n;
-
-	trace_sync_timeline(obj);
-
-	spin_lock_irqsave(&obj->active_list_lock, flags);
-
-	list_for_each_safe(pos, n, &obj->active_list_head) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, active_list);
-
-		if (_sync_pt_has_signaled(pt)) {
-			list_del_init(pos);
-			list_add(&pt->signaled_list, &signaled_pts);
-			kref_get(&pt->fence->kref);
-		}
-	}
-
-	spin_unlock_irqrestore(&obj->active_list_lock, flags);
-
-	list_for_each_safe(pos, n, &signaled_pts) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, signaled_list);
-
-		list_del_init(pos);
-		sync_fence_signal_pt(pt);
-		kref_put(&pt->fence->kref, sync_fence_free);
-	}
-}
-EXPORT_SYMBOL(sync_timeline_signal);
-
-struct sync_pt *sync_pt_create(struct sync_timeline *parent, int size)
-{
-	struct sync_pt *pt;
-
-	if (size < sizeof(struct sync_pt))
-		return NULL;
-
-	pt = kzalloc(size, GFP_KERNEL);
-	if (pt == NULL)
-		return NULL;
-
-	INIT_LIST_HEAD(&pt->active_list);
-	kref_get(&parent->kref);
-	sync_timeline_add_pt(parent, pt);
-
-	return pt;
-}
-EXPORT_SYMBOL(sync_pt_create);
-
-void sync_pt_free(struct sync_pt *pt)
-{
-	if (pt->parent->ops->free_pt)
-		pt->parent->ops->free_pt(pt);
-
-	sync_timeline_remove_pt(pt);
-
-	kref_put(&pt->parent->kref, sync_timeline_free);
-
-	kfree(pt);
-}
-EXPORT_SYMBOL(sync_pt_free);
-
-/* call with pt->parent->active_list_lock held */
-static int _sync_pt_has_signaled(struct sync_pt *pt)
-{
-	int old_status = pt->status;
-
-	if (!pt->status)
-		pt->status = pt->parent->ops->has_signaled(pt);
-
-	if (!pt->status && pt->parent->destroyed)
-		pt->status = -ENOENT;
-
-	if (pt->status != old_status)
-		pt->timestamp = ktime_get();
-
-	return pt->status;
-}
-
-static struct sync_pt *sync_pt_dup(struct sync_pt *pt)
-{
-	return pt->parent->ops->dup(pt);
-}
-
-/* Adds a sync pt to the active queue.  Called when added to a fence */
-static void sync_pt_activate(struct sync_pt *pt)
-{
-	struct sync_timeline *obj = pt->parent;
-	unsigned long flags;
-	int err;
-
-	spin_lock_irqsave(&obj->active_list_lock, flags);
-
-	err = _sync_pt_has_signaled(pt);
-	if (err != 0)
-		goto out;
-
-	list_add_tail(&pt->active_list, &obj->active_list_head);
-
-out:
-	spin_unlock_irqrestore(&obj->active_list_lock, flags);
-}
-
-static int sync_fence_release(struct inode *inode, struct file *file);
-static unsigned int sync_fence_poll(struct file *file, poll_table *wait);
-static long sync_fence_ioctl(struct file *file, unsigned int cmd,
-			     unsigned long arg);
-
-
-static const struct file_operations sync_fence_fops = {
-	.release = sync_fence_release,
-	.poll = sync_fence_poll,
-	.unlocked_ioctl = sync_fence_ioctl,
-	.compat_ioctl = sync_fence_ioctl,
-};
-
-static struct sync_fence *sync_fence_alloc(const char *name)
-{
-	struct sync_fence *fence;
-	unsigned long flags;
-
-	fence = kzalloc(sizeof(struct sync_fence), GFP_KERNEL);
-	if (fence == NULL)
-		return NULL;
-
-	fence->file = anon_inode_getfile("sync_fence", &sync_fence_fops,
-					 fence, 0);
-	if (fence->file == NULL)
-		goto err;
-
-	kref_init(&fence->kref);
-	strlcpy(fence->name, name, sizeof(fence->name));
-
-	INIT_LIST_HEAD(&fence->pt_list_head);
-	INIT_LIST_HEAD(&fence->waiter_list_head);
-	spin_lock_init(&fence->waiter_list_lock);
-
-	init_waitqueue_head(&fence->wq);
-
-	spin_lock_irqsave(&sync_fence_list_lock, flags);
-	list_add_tail(&fence->sync_fence_list, &sync_fence_list_head);
-	spin_unlock_irqrestore(&sync_fence_list_lock, flags);
-
-	return fence;
-
-err:
-	kfree(fence);
-	return NULL;
-}
-
-/* TODO: implement a create which takes more that one sync_pt */
-struct sync_fence *sync_fence_create(const char *name, struct sync_pt *pt)
-{
-	struct sync_fence *fence;
-
-	if (pt->fence)
-		return NULL;
-
-	fence = sync_fence_alloc(name);
-	if (fence == NULL)
-		return NULL;
-
-	pt->fence = fence;
-	list_add(&pt->pt_list, &fence->pt_list_head);
-	sync_pt_activate(pt);
-
-	/*
-	 * signal the fence in case pt was activated before
-	 * sync_pt_activate(pt) was called
-	 */
-	sync_fence_signal_pt(pt);
-
-	return fence;
-}
-EXPORT_SYMBOL(sync_fence_create);
-
-static int sync_fence_copy_pts(struct sync_fence *dst, struct sync_fence *src)
-{
-	struct list_head *pos;
-
-	list_for_each(pos, &src->pt_list_head) {
-		struct sync_pt *orig_pt =
-			container_of(pos, struct sync_pt, pt_list);
-		struct sync_pt *new_pt = sync_pt_dup(orig_pt);
-
-		if (new_pt == NULL)
-			return -ENOMEM;
-
-		new_pt->fence = dst;
-		list_add(&new_pt->pt_list, &dst->pt_list_head);
-	}
-
-	return 0;
-}
-
-static int sync_fence_merge_pts(struct sync_fence *dst, struct sync_fence *src)
-{
-	struct list_head *src_pos, *dst_pos, *n;
-
-	list_for_each(src_pos, &src->pt_list_head) {
-		struct sync_pt *src_pt =
-			container_of(src_pos, struct sync_pt, pt_list);
-		bool collapsed = false;
-
-		list_for_each_safe(dst_pos, n, &dst->pt_list_head) {
-			struct sync_pt *dst_pt =
-				container_of(dst_pos, struct sync_pt, pt_list);
-			/* collapse two sync_pts on the same timeline
-			 * to a single sync_pt that will signal at
-			 * the later of the two
-			 */
-			if (dst_pt->parent == src_pt->parent) {
-				if (dst_pt->parent->ops->compare(dst_pt, src_pt) == -1) {
-					struct sync_pt *new_pt =
-						sync_pt_dup(src_pt);
-					if (new_pt == NULL)
-						return -ENOMEM;
-
-					new_pt->fence = dst;
-					list_replace(&dst_pt->pt_list,
-						     &new_pt->pt_list);
-					sync_pt_free(dst_pt);
-				}
-				collapsed = true;
-				break;
-			}
-		}
-
-		if (!collapsed) {
-			struct sync_pt *new_pt = sync_pt_dup(src_pt);
-
-			if (new_pt == NULL)
-				return -ENOMEM;
-
-			new_pt->fence = dst;
-			list_add(&new_pt->pt_list, &dst->pt_list_head);
-		}
-	}
-
-	return 0;
-}
-
-static void sync_fence_detach_pts(struct sync_fence *fence)
-{
-	struct list_head *pos, *n;
-
-	list_for_each_safe(pos, n, &fence->pt_list_head) {
-		struct sync_pt *pt = container_of(pos, struct sync_pt, pt_list);
-		sync_timeline_remove_pt(pt);
-	}
-}
-
-static void sync_fence_free_pts(struct sync_fence *fence)
-{
-	struct list_head *pos, *n;
-
-	list_for_each_safe(pos, n, &fence->pt_list_head) {
-		struct sync_pt *pt = container_of(pos, struct sync_pt, pt_list);
-		sync_pt_free(pt);
-	}
-}
-
-struct sync_fence *sync_fence_fdget(int fd)
-{
-	struct file *file = fget(fd);
-
-	if (file == NULL)
-		return NULL;
-
-	if (file->f_op != &sync_fence_fops)
-		goto err;
-
-	return file->private_data;
-
-err:
-	fput(file);
-	return NULL;
-}
-EXPORT_SYMBOL(sync_fence_fdget);
-
-void sync_fence_put(struct sync_fence *fence)
-{
-	fput(fence->file);
-}
-EXPORT_SYMBOL(sync_fence_put);
-
-void sync_fence_install(struct sync_fence *fence, int fd)
-{
-	fd_install(fd, fence->file);
-}
-EXPORT_SYMBOL(sync_fence_install);
-
-static int sync_fence_get_status(struct sync_fence *fence)
-{
-	struct list_head *pos;
-	int status = 1;
-
-	list_for_each(pos, &fence->pt_list_head) {
-		struct sync_pt *pt = container_of(pos, struct sync_pt, pt_list);
-		int pt_status = pt->status;
-
-		if (pt_status < 0) {
-			status = pt_status;
-			break;
-		} else if (status == 1) {
-			status = pt_status;
-		}
-	}
-
-	return status;
-}
-
-struct sync_fence *sync_fence_merge(const char *name,
-				    struct sync_fence *a, struct sync_fence *b)
-{
-	struct sync_fence *fence;
-	struct list_head *pos;
-	int err;
-
-	fence = sync_fence_alloc(name);
-	if (fence == NULL)
-		return NULL;
-
-	err = sync_fence_copy_pts(fence, a);
-	if (err < 0)
-		goto err;
-
-	err = sync_fence_merge_pts(fence, b);
-	if (err < 0)
-		goto err;
-
-	list_for_each(pos, &fence->pt_list_head) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, pt_list);
-		sync_pt_activate(pt);
-	}
-
-	/*
-	 * signal the fence in case one of it's pts were activated before
-	 * they were activated
-	 */
-	sync_fence_signal_pt(list_first_entry(&fence->pt_list_head,
-					      struct sync_pt,
-					      pt_list));
-
-	return fence;
-err:
-	sync_fence_free_pts(fence);
-	kfree(fence);
-	return NULL;
-}
-EXPORT_SYMBOL(sync_fence_merge);
-
-static void sync_fence_signal_pt(struct sync_pt *pt)
-{
-	LIST_HEAD(signaled_waiters);
-	struct sync_fence *fence = pt->fence;
-	struct list_head *pos;
-	struct list_head *n;
-	unsigned long flags;
-	int status;
-
-	status = sync_fence_get_status(fence);
-
-	spin_lock_irqsave(&fence->waiter_list_lock, flags);
-	/*
-	 * this should protect against two threads racing on the signaled
-	 * false -> true transition
-	 */
-	if (status && !fence->status) {
-		list_for_each_safe(pos, n, &fence->waiter_list_head)
-			list_move(pos, &signaled_waiters);
-
-		fence->status = status;
-	} else {
-		status = 0;
-	}
-	spin_unlock_irqrestore(&fence->waiter_list_lock, flags);
-
-	if (status) {
-		list_for_each_safe(pos, n, &signaled_waiters) {
-			struct sync_fence_waiter *waiter =
-				container_of(pos, struct sync_fence_waiter,
-					     waiter_list);
-
-			list_del(pos);
-			waiter->callback(fence, waiter);
-		}
-		wake_up(&fence->wq);
-	}
-}
-
-int sync_fence_wait_async(struct sync_fence *fence,
-			  struct sync_fence_waiter *waiter)
-{
-	unsigned long flags;
-	int err = 0;
-
-	spin_lock_irqsave(&fence->waiter_list_lock, flags);
-
-	if (fence->status) {
-		err = fence->status;
-		goto out;
-	}
-
-	list_add_tail(&waiter->waiter_list, &fence->waiter_list_head);
-out:
-	spin_unlock_irqrestore(&fence->waiter_list_lock, flags);
-
-	return err;
-}
-EXPORT_SYMBOL(sync_fence_wait_async);
-
-int sync_fence_cancel_async(struct sync_fence *fence,
-			     struct sync_fence_waiter *waiter)
-{
-	struct list_head *pos;
-	struct list_head *n;
-	unsigned long flags;
-	int ret = -ENOENT;
-
-	spin_lock_irqsave(&fence->waiter_list_lock, flags);
-	/*
-	 * Make sure waiter is still in waiter_list because it is possible for
-	 * the waiter to be removed from the list while the callback is still
-	 * pending.
-	 */
-	list_for_each_safe(pos, n, &fence->waiter_list_head) {
-		struct sync_fence_waiter *list_waiter =
-			container_of(pos, struct sync_fence_waiter,
-				     waiter_list);
-		if (list_waiter == waiter) {
-			list_del(pos);
-			ret = 0;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&fence->waiter_list_lock, flags);
-	return ret;
-}
-EXPORT_SYMBOL(sync_fence_cancel_async);
-
-static bool sync_fence_check(struct sync_fence *fence)
-{
-	/*
-	 * Make sure that reads to fence->status are ordered with the
-	 * wait queue event triggering
-	 */
-	smp_rmb();
-	return fence->status != 0;
-}
-
-int sync_fence_wait(struct sync_fence *fence, long timeout)
-{
-	int err = 0;
-	struct sync_pt *pt;
-
-	trace_sync_wait(fence, 1);
-	list_for_each_entry(pt, &fence->pt_list_head, pt_list)
-		trace_sync_pt(pt);
-
-	if (timeout > 0) {
-		timeout = msecs_to_jiffies(timeout);
-		err = wait_event_interruptible_timeout(fence->wq,
-						       sync_fence_check(fence),
-						       timeout);
-	} else if (timeout < 0) {
-		err = wait_event_interruptible(fence->wq,
-					       sync_fence_check(fence));
-	}
-	trace_sync_wait(fence, 0);
-
-	if (err < 0)
-		return err;
-
-	if (fence->status < 0) {
-		pr_info("fence error %d on [%p]\n", fence->status, fence);
-		sync_dump();
-		return fence->status;
-	}
-
-	if (fence->status == 0) {
-		if (timeout > 0) {
-			pr_info("fence timeout on [%p] after %dms\n", fence,
-				jiffies_to_msecs(timeout));
-			sync_dump();
-		}
-		return -ETIME;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(sync_fence_wait);
-
-static void sync_fence_free(struct kref *kref)
-{
-	struct sync_fence *fence = container_of(kref, struct sync_fence, kref);
-
-	sync_fence_free_pts(fence);
-
-	kfree(fence);
-}
-
-static int sync_fence_release(struct inode *inode, struct file *file)
-{
-	struct sync_fence *fence = file->private_data;
-	unsigned long flags;
-
-	/*
-	 * We need to remove all ways to access this fence before droping
-	 * our ref.
-	 *
-	 * start with its membership in the global fence list
-	 */
-	spin_lock_irqsave(&sync_fence_list_lock, flags);
-	list_del(&fence->sync_fence_list);
-	spin_unlock_irqrestore(&sync_fence_list_lock, flags);
-
-	/*
-	 * remove its pts from their parents so that sync_timeline_signal()
-	 * can't reference the fence.
-	 */
-	sync_fence_detach_pts(fence);
-
-	kref_put(&fence->kref, sync_fence_free);
-
-	return 0;
-}
-
-static unsigned int sync_fence_poll(struct file *file, poll_table *wait)
-{
-	struct sync_fence *fence = file->private_data;
-
-	poll_wait(file, &fence->wq, wait);
-
-	/*
-	 * Make sure that reads to fence->status are ordered with the
-	 * wait queue event triggering
-	 */
-	smp_rmb();
-
-	if (fence->status == 1)
-		return POLLIN;
-	else if (fence->status < 0)
-		return POLLERR;
-	else
-		return 0;
-}
-
-static long sync_fence_ioctl_wait(struct sync_fence *fence, unsigned long arg)
-{
-	__s32 value;
-
-	if (copy_from_user(&value, (void __user *)arg, sizeof(value)))
-		return -EFAULT;
-
-	return sync_fence_wait(fence, value);
-}
-
-static long sync_fence_ioctl_merge(struct sync_fence *fence, unsigned long arg)
-{
-	int fd = get_unused_fd();
-	int err;
-	struct sync_fence *fence2, *fence3;
-	struct sync_merge_data data;
-
-	if (fd < 0)
-		return fd;
-
-	if (copy_from_user(&data, (void __user *)arg, sizeof(data))) {
-		err = -EFAULT;
-		goto err_put_fd;
-	}
-
-	fence2 = sync_fence_fdget(data.fd2);
-	if (fence2 == NULL) {
-		err = -ENOENT;
-		goto err_put_fd;
-	}
-
-	data.name[sizeof(data.name) - 1] = '\0';
-	fence3 = sync_fence_merge(data.name, fence, fence2);
-	if (fence3 == NULL) {
-		err = -ENOMEM;
-		goto err_put_fence2;
-	}
-
-	data.fence = fd;
-	if (copy_to_user((void __user *)arg, &data, sizeof(data))) {
-		err = -EFAULT;
-		goto err_put_fence3;
-	}
-
-	sync_fence_install(fence3, fd);
-	sync_fence_put(fence2);
-	return 0;
-
-err_put_fence3:
-	sync_fence_put(fence3);
-
-err_put_fence2:
-	sync_fence_put(fence2);
-
-err_put_fd:
-	put_unused_fd(fd);
-	return err;
-}
-
-static int sync_fill_pt_info(struct sync_pt *pt, void *data, int size)
-{
-	struct sync_pt_info *info = data;
-	int ret;
-
-	if (size < sizeof(struct sync_pt_info))
-		return -ENOMEM;
-
-	info->len = sizeof(struct sync_pt_info);
-
-	if (pt->parent->ops->fill_driver_data) {
-		ret = pt->parent->ops->fill_driver_data(pt, info->driver_data,
-							size - sizeof(*info));
-		if (ret < 0)
-			return ret;
-
-		info->len += ret;
-	}
-
-	strlcpy(info->obj_name, pt->parent->name, sizeof(info->obj_name));
-	strlcpy(info->driver_name, pt->parent->ops->driver_name,
-		sizeof(info->driver_name));
-	info->status = pt->status;
-	info->timestamp_ns = ktime_to_ns(pt->timestamp);
-
-	return info->len;
-}
-
-static long sync_fence_ioctl_fence_info(struct sync_fence *fence,
-					unsigned long arg)
-{
-	struct sync_fence_info_data *data;
-	struct list_head *pos;
-	__u32 size;
-	__u32 len = 0;
-	int ret;
-
-	if (copy_from_user(&size, (void __user *)arg, sizeof(size)))
-		return -EFAULT;
-
-	if (size < sizeof(struct sync_fence_info_data))
-		return -EINVAL;
-
-	if (size > 4096)
-		size = 4096;
-
-	data = kzalloc(size, GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-
-	strlcpy(data->name, fence->name, sizeof(data->name));
-	data->status = fence->status;
-	len = sizeof(struct sync_fence_info_data);
-
-	list_for_each(pos, &fence->pt_list_head) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, pt_list);
-
-		ret = sync_fill_pt_info(pt, (u8 *)data + len, size - len);
-
-		if (ret < 0)
-			goto out;
-
-		len += ret;
-	}
-
-	data->len = len;
-
-	if (copy_to_user((void __user *)arg, data, len))
-		ret = -EFAULT;
-	else
-		ret = 0;
-
-out:
-	kfree(data);
-
-	return ret;
-}
-
-static long sync_fence_ioctl(struct file *file, unsigned int cmd,
-			     unsigned long arg)
-{
-	struct sync_fence *fence = file->private_data;
-	switch (cmd) {
-	case SYNC_IOC_WAIT:
-		return sync_fence_ioctl_wait(fence, arg);
-
-	case SYNC_IOC_MERGE:
-		return sync_fence_ioctl_merge(fence, arg);
-
-	case SYNC_IOC_FENCE_INFO:
-		return sync_fence_ioctl_fence_info(fence, arg);
-
-	default:
-		return -ENOTTY;
-	}
-}
-
-#ifdef CONFIG_DEBUG_FS
-static const char *sync_status_str(int status)
-{
-	if (status > 0)
-		return "signaled";
-	else if (status == 0)
-		return "active";
-	else
-		return "error";
-}
-
-static void sync_print_pt(struct seq_file *s, struct sync_pt *pt, bool fence)
-{
-	int status = pt->status;
-	seq_printf(s, "  %s%spt %s",
-		   fence ? pt->parent->name : "",
-		   fence ? "_" : "",
-		   sync_status_str(status));
-	if (pt->status) {
-		struct timeval tv = ktime_to_timeval(pt->timestamp);
-		seq_printf(s, "@%ld.%06ld", tv.tv_sec, tv.tv_usec);
-	}
-
-	if (pt->parent->ops->timeline_value_str &&
-	    pt->parent->ops->pt_value_str) {
-		char value[64];
-		pt->parent->ops->pt_value_str(pt, value, sizeof(value));
-		seq_printf(s, ": %s", value);
-		if (fence) {
-			pt->parent->ops->timeline_value_str(pt->parent, value,
-						    sizeof(value));
-			seq_printf(s, " / %s", value);
-		}
-	} else if (pt->parent->ops->print_pt) {
-		seq_printf(s, ": ");
-		pt->parent->ops->print_pt(s, pt);
-	}
-
-	seq_printf(s, "\n");
-}
-
-static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
-{
-	struct list_head *pos;
-	unsigned long flags;
-
-	seq_printf(s, "%s %s", obj->name, obj->ops->driver_name);
-
-	if (obj->ops->timeline_value_str) {
-		char value[64];
-		obj->ops->timeline_value_str(obj, value, sizeof(value));
-		seq_printf(s, ": %s", value);
-	} else if (obj->ops->print_obj) {
-		seq_printf(s, ": ");
-		obj->ops->print_obj(s, obj);
-	}
-
-	seq_printf(s, "\n");
-
-	spin_lock_irqsave(&obj->child_list_lock, flags);
-	list_for_each(pos, &obj->child_list_head) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, child_list);
-		sync_print_pt(s, pt, false);
-	}
-	spin_unlock_irqrestore(&obj->child_list_lock, flags);
-}
-
-static void sync_print_fence(struct seq_file *s, struct sync_fence *fence)
-{
-	struct list_head *pos;
-	unsigned long flags;
-
-	seq_printf(s, "[%p] %s: %s\n", fence, fence->name,
-		   sync_status_str(fence->status));
-
-	list_for_each(pos, &fence->pt_list_head) {
-		struct sync_pt *pt =
-			container_of(pos, struct sync_pt, pt_list);
-		sync_print_pt(s, pt, true);
-	}
-
-	spin_lock_irqsave(&fence->waiter_list_lock, flags);
-	list_for_each(pos, &fence->waiter_list_head) {
-		struct sync_fence_waiter *waiter =
-			container_of(pos, struct sync_fence_waiter,
-				     waiter_list);
-
-		seq_printf(s, "waiter %pF\n", waiter->callback);
-	}
-	spin_unlock_irqrestore(&fence->waiter_list_lock, flags);
-}
-
-static int sync_debugfs_show(struct seq_file *s, void *unused)
-{
-	unsigned long flags;
-	struct list_head *pos;
-
-	seq_printf(s, "objs:\n--------------\n");
-
-	spin_lock_irqsave(&sync_timeline_list_lock, flags);
-	list_for_each(pos, &sync_timeline_list_head) {
-		struct sync_timeline *obj =
-			container_of(pos, struct sync_timeline,
-				     sync_timeline_list);
-
-		sync_print_obj(s, obj);
-		seq_printf(s, "\n");
-	}
-	spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
-
-	seq_printf(s, "fences:\n--------------\n");
-
-	spin_lock_irqsave(&sync_fence_list_lock, flags);
-	list_for_each(pos, &sync_fence_list_head) {
-		struct sync_fence *fence =
-			container_of(pos, struct sync_fence, sync_fence_list);
-
-		sync_print_fence(s, fence);
-		seq_printf(s, "\n");
-	}
-	spin_unlock_irqrestore(&sync_fence_list_lock, flags);
-	return 0;
-}
-
-static int sync_debugfs_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, sync_debugfs_show, inode->i_private);
-}
-
-static const struct file_operations sync_debugfs_fops = {
-	.open           = sync_debugfs_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release        = single_release,
-};
-
-static __init int sync_debugfs_init(void)
-{
-	debugfs_create_file("sync", S_IRUGO, NULL, NULL, &sync_debugfs_fops);
-	return 0;
-}
-late_initcall(sync_debugfs_init);
-
-#define DUMP_CHUNK 256
-static char sync_dump_buf[64 * 1024];
-void sync_dump(void)
-{
-       struct seq_file s = {
-               .buf = sync_dump_buf,
-               .size = sizeof(sync_dump_buf) - 1,
-       };
-       int i;
-
-       sync_debugfs_show(&s, NULL);
-
-       for (i = 0; i < s.count; i += DUMP_CHUNK) {
-               if ((s.count - i) > DUMP_CHUNK) {
-                       char c = s.buf[i + DUMP_CHUNK];
-                       s.buf[i + DUMP_CHUNK] = 0;
-                       pr_cont("%s", s.buf + i);
-                       s.buf[i + DUMP_CHUNK] = c;
-               } else {
-                       s.buf[s.count] = 0;
-                       pr_cont("%s", s.buf + i);
-               }
-       }
-}
-#else
-static void sync_dump(void)
-{
-}
-#endif
diff --git a/include/linux/sync.h b/include/linux/sync.h
deleted file mode 100644
index 5f493638148d..000000000000
--- a/include/linux/sync.h
+++ /dev/null
@@ -1,427 +0,0 @@
-/*
- * include/linux/sync.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_H
-#define _LINUX_SYNC_H
-
-#include <linux/types.h>
-#ifdef __KERNEL__
-
-#include <linux/kref.h>
-#include <linux/ktime.h>
-#include <linux/list.h>
-#include <linux/seq_file.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-
-struct sync_timeline;
-struct sync_pt;
-struct sync_fence;
-
-/**
- * struct sync_timeline_ops - sync object implementation ops
- * @driver_name:	name of the implentation
- * @dup:		duplicate a sync_pt
- * @has_signaled:	returns:
- *			  1 if pt has signaled
- *			  0 if pt has not signaled
- *			 <0 on error
- * @compare:		returns:
- *			  1 if b will signal before a
- *			  0 if a and b will signal at the same time
- *			 -1 if a will signabl before b
- * @free_pt:		called before sync_pt is freed
- * @release_obj:	called before sync_timeline is freed
- * @print_obj:		deprecated
- * @print_pt:		deprecated
- * @fill_driver_data:	write implmentation specific driver data to data.
- *			  should return an error if there is not enough room
- *			  as specified by size.  This information is returned
- *			  to userspace by SYNC_IOC_FENCE_INFO.
- * @timeline_value_str: fill str with the value of the sync_timeline's counter
- * @pt_value_str:	fill str with the value of the sync_pt
- */
-struct sync_timeline_ops {
-	const char *driver_name;
-
-	/* required */
-	struct sync_pt *(*dup)(struct sync_pt *pt);
-
-	/* required */
-	int (*has_signaled)(struct sync_pt *pt);
-
-	/* required */
-	int (*compare)(struct sync_pt *a, struct sync_pt *b);
-
-	/* optional */
-	void (*free_pt)(struct sync_pt *sync_pt);
-
-	/* optional */
-	void (*release_obj)(struct sync_timeline *sync_timeline);
-
-	/* deprecated */
-	void (*print_obj)(struct seq_file *s,
-			  struct sync_timeline *sync_timeline);
-
-	/* deprecated */
-	void (*print_pt)(struct seq_file *s, struct sync_pt *sync_pt);
-
-	/* optional */
-	int (*fill_driver_data)(struct sync_pt *syncpt, void *data, int size);
-
-	/* optional */
-	void (*timeline_value_str)(struct sync_timeline *timeline, char *str,
-				   int size);
-
-	/* optional */
-	void (*pt_value_str)(struct sync_pt *pt, char *str, int size);
-};
-
-/**
- * struct sync_timeline - sync object
- * @kref:		reference count on fence.
- * @ops:		ops that define the implementaiton of the sync_timeline
- * @name:		name of the sync_timeline. Useful for debugging
- * @destoryed:		set when sync_timeline is destroyed
- * @child_list_head:	list of children sync_pts for this sync_timeline
- * @child_list_lock:	lock protecting @child_list_head, destroyed, and
- *			  sync_pt.status
- * @active_list_head:	list of active (unsignaled/errored) sync_pts
- * @sync_timeline_list:	membership in global sync_timeline_list
- */
-struct sync_timeline {
-	struct kref		kref;
-	const struct sync_timeline_ops	*ops;
-	char			name[32];
-
-	/* protected by child_list_lock */
-	bool			destroyed;
-
-	struct list_head	child_list_head;
-	spinlock_t		child_list_lock;
-
-	struct list_head	active_list_head;
-	spinlock_t		active_list_lock;
-
-	struct list_head	sync_timeline_list;
-};
-
-/**
- * struct sync_pt - sync point
- * @parent:		sync_timeline to which this sync_pt belongs
- * @child_list:		membership in sync_timeline.child_list_head
- * @active_list:	membership in sync_timeline.active_list_head
- * @signaled_list:	membership in temorary signaled_list on stack
- * @fence:		sync_fence to which the sync_pt belongs
- * @pt_list:		membership in sync_fence.pt_list_head
- * @status:		1: signaled, 0:active, <0: error
- * @timestamp:		time which sync_pt status transitioned from active to
- *			  singaled or error.
- */
-struct sync_pt {
-	struct sync_timeline		*parent;
-	struct list_head	child_list;
-
-	struct list_head	active_list;
-	struct list_head	signaled_list;
-
-	struct sync_fence	*fence;
-	struct list_head	pt_list;
-
-	/* protected by parent->active_list_lock */
-	int			status;
-
-	ktime_t			timestamp;
-};
-
-/**
- * struct sync_fence - sync fence
- * @file:		file representing this fence
- * @kref:		referenace count on fence.
- * @name:		name of sync_fence.  Useful for debugging
- * @pt_list_head:	list of sync_pts in ths fence.  immutable once fence
- *			  is created
- * @waiter_list_head:	list of asynchronous waiters on this fence
- * @waiter_list_lock:	lock protecting @waiter_list_head and @status
- * @status:		1: signaled, 0:active, <0: error
- *
- * @wq:			wait queue for fence signaling
- * @sync_fence_list:	membership in global fence list
- */
-struct sync_fence {
-	struct file		*file;
-	struct kref		kref;
-	char			name[32];
-
-	/* this list is immutable once the fence is created */
-	struct list_head	pt_list_head;
-
-	struct list_head	waiter_list_head;
-	spinlock_t		waiter_list_lock; /* also protects status */
-	int			status;
-
-	wait_queue_head_t	wq;
-
-	struct list_head	sync_fence_list;
-};
-
-struct sync_fence_waiter;
-typedef void (*sync_callback_t)(struct sync_fence *fence,
-				struct sync_fence_waiter *waiter);
-
-/**
- * struct sync_fence_waiter - metadata for asynchronous waiter on a fence
- * @waiter_list:	membership in sync_fence.waiter_list_head
- * @callback:		function pointer to call when fence signals
- * @callback_data:	pointer to pass to @callback
- */
-struct sync_fence_waiter {
-	struct list_head	waiter_list;
-
-	sync_callback_t		callback;
-};
-
-static inline void sync_fence_waiter_init(struct sync_fence_waiter *waiter,
-					  sync_callback_t callback)
-{
-	waiter->callback = callback;
-}
-
-/*
- * API for sync_timeline implementers
- */
-
-/**
- * sync_timeline_create() - creates a sync object
- * @ops:	specifies the implemention ops for the object
- * @size:	size to allocate for this obj
- * @name:	sync_timeline name
- *
- * Creates a new sync_timeline which will use the implemetation specified by
- * @ops.  @size bytes will be allocated allowing for implemntation specific
- * data to be kept after the generic sync_timeline stuct.
- */
-struct sync_timeline *sync_timeline_create(const struct sync_timeline_ops *ops,
-					   int size, const char *name);
-
-/**
- * sync_timeline_destory() - destorys a sync object
- * @obj:	sync_timeline to destroy
- *
- * A sync implemntation should call this when the @obj is going away
- * (i.e. module unload.)  @obj won't actually be freed until all its childern
- * sync_pts are freed.
- */
-void sync_timeline_destroy(struct sync_timeline *obj);
-
-/**
- * sync_timeline_signal() - signal a status change on a sync_timeline
- * @obj:	sync_timeline to signal
- *
- * A sync implemntation should call this any time one of it's sync_pts
- * has signaled or has an error condition.
- */
-void sync_timeline_signal(struct sync_timeline *obj);
-
-/**
- * sync_pt_create() - creates a sync pt
- * @parent:	sync_pt's parent sync_timeline
- * @size:	size to allocate for this pt
- *
- * Creates a new sync_pt as a chiled of @parent.  @size bytes will be
- * allocated allowing for implemntation specific data to be kept after
- * the generic sync_timeline struct.
- */
-struct sync_pt *sync_pt_create(struct sync_timeline *parent, int size);
-
-/**
- * sync_pt_free() - frees a sync pt
- * @pt:		sync_pt to free
- *
- * This should only be called on sync_pts which have been created but
- * not added to a fence.
- */
-void sync_pt_free(struct sync_pt *pt);
-
-/**
- * sync_fence_create() - creates a sync fence
- * @name:	name of fence to create
- * @pt:		sync_pt to add to the fence
- *
- * Creates a fence containg @pt.  Once this is called, the fence takes
- * ownership of @pt.
- */
-struct sync_fence *sync_fence_create(const char *name, struct sync_pt *pt);
-
-/*
- * API for sync_fence consumers
- */
-
-/**
- * sync_fence_merge() - merge two fences
- * @name:	name of new fence
- * @a:		fence a
- * @b:		fence b
- *
- * Creates a new fence which contains copies of all the sync_pts in both
- * @a and @b.  @a and @b remain valid, independent fences.
- */
-struct sync_fence *sync_fence_merge(const char *name,
-				    struct sync_fence *a, struct sync_fence *b);
-
-/**
- * sync_fence_fdget() - get a fence from an fd
- * @fd:		fd referencing a fence
- *
- * Ensures @fd references a valid fence, increments the refcount of the backing
- * file, and returns the fence.
- */
-struct sync_fence *sync_fence_fdget(int fd);
-
-/**
- * sync_fence_put() - puts a refernnce of a sync fence
- * @fence:	fence to put
- *
- * Puts a reference on @fence.  If this is the last reference, the fence and
- * all it's sync_pts will be freed
- */
-void sync_fence_put(struct sync_fence *fence);
-
-/**
- * sync_fence_install() - installs a fence into a file descriptor
- * @fence:	fence to instal
- * @fd:		file descriptor in which to install the fence
- *
- * Installs @fence into @fd.  @fd's should be acquired through get_unused_fd().
- */
-void sync_fence_install(struct sync_fence *fence, int fd);
-
-/**
- * sync_fence_wait_async() - registers and async wait on the fence
- * @fence:		fence to wait on
- * @waiter:		waiter callback struck
- *
- * Returns 1 if @fence has already signaled.
- *
- * Registers a callback to be called when @fence signals or has an error.
- * @waiter should be initialized with sync_fence_waiter_init().
- */
-int sync_fence_wait_async(struct sync_fence *fence,
-			  struct sync_fence_waiter *waiter);
-
-/**
- * sync_fence_cancel_async() - cancels an async wait
- * @fence:		fence to wait on
- * @waiter:		waiter callback struck
- *
- * returns 0 if waiter was removed from fence's async waiter list.
- * returns -ENOENT if waiter was not found on fence's async waiter list.
- *
- * Cancels a previously registered async wait.  Will fail gracefully if
- * @waiter was never registered or if @fence has already signaled @waiter.
- */
-int sync_fence_cancel_async(struct sync_fence *fence,
-			    struct sync_fence_waiter *waiter);
-
-/**
- * sync_fence_wait() - wait on fence
- * @fence:	fence to wait on
- * @tiemout:	timeout in ms
- *
- * Wait for @fence to be signaled or have an error.  Waits indefinitely
- * if @timeout < 0
- */
-int sync_fence_wait(struct sync_fence *fence, long timeout);
-
-#endif /* __KERNEL__ */
-
-/**
- * struct sync_merge_data - data passed to merge ioctl
- * @fd2:	file descriptor of second fence
- * @name:	name of new fence
- * @fence:	returns the fd of the new fence to userspace
- */
-struct sync_merge_data {
-	__s32	fd2; /* fd of second fence */
-	char	name[32]; /* name of new fence */
-	__s32	fence; /* fd on newly created fence */
-};
-
-/**
- * struct sync_pt_info - detailed sync_pt information
- * @len:		length of sync_pt_info including any driver_data
- * @obj_name:		name of parent sync_timeline
- * @driver_name:	name of driver implmenting the parent
- * @status:		status of the sync_pt 0:active 1:signaled <0:error
- * @timestamp_ns:	timestamp of status change in nanoseconds
- * @driver_data:	any driver dependant data
- */
-struct sync_pt_info {
-	__u32	len;
-	char	obj_name[32];
-	char	driver_name[32];
-	__s32	status;
-	__u64	timestamp_ns;
-
-	__u8	driver_data[0];
-};
-
-/**
- * struct sync_fence_info_data - data returned from fence info ioctl
- * @len:	ioctl caller writes the size of the buffer its passing in.
- *		ioctl returns length of sync_fence_data reutnred to userspace
- *		including pt_info.
- * @name:	name of fence
- * @status:	status of fence. 1: signaled 0:active <0:error
- * @pt_info:	a sync_pt_info struct for every sync_pt in the fence
- */
-struct sync_fence_info_data {
-	__u32	len;
-	char	name[32];
-	__s32	status;
-
-	__u8	pt_info[0];
-};
-
-#define SYNC_IOC_MAGIC		'>'
-
-/**
- * DOC: SYNC_IOC_WAIT - wait for a fence to signal
- *
- * pass timeout in milliseconds.  Waits indefinitely timeout < 0.
- */
-#define SYNC_IOC_WAIT		_IOW(SYNC_IOC_MAGIC, 0, __s32)
-
-/**
- * DOC: SYNC_IOC_MERGE - merge two fences
- *
- * Takes a struct sync_merge_data.  Creates a new fence containing copies of
- * the sync_pts in both the calling fd and sync_merge_data.fd2.  Returns the
- * new fence's fd in sync_merge_data.fence
- */
-#define SYNC_IOC_MERGE		_IOWR(SYNC_IOC_MAGIC, 1, struct sync_merge_data)
-
-/**
- * DOC: SYNC_IOC_FENCE_INFO - get detailed information on a fence
- *
- * Takes a struct sync_fence_info_data with extra space allocated for pt_info.
- * Caller should write the size of the buffer into len.  On return, len is
- * updated to reflect the total size of the sync_fence_info_data including
- * pt_info.
- *
- * pt_info is a buffer containing sync_pt_infos for every sync_pt in the fence.
- * To itterate over the sync_pt_infos, use the sync_pt_info.len field.
- */
-#define SYNC_IOC_FENCE_INFO	_IOWR(SYNC_IOC_MAGIC, 2,\
-	struct sync_fence_info_data)
-
-#endif /* _LINUX_SYNC_H */