staging/android: remove sw_sync.[ch] files

We can glue the sw_sync file operations directly on the sync framework
without the need to pass through sw_sync wrappers.

It only builds sw_sync debugfs file support if CONFIG_SW_SYNC is enabled.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NSumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/Makefile

@@ -5,4 +5,3 @@ obj-y					+= ion/
 obj-$(CONFIG_ASHMEM)			+= ashmem.o
 obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER)	+= lowmemorykiller.o
 obj-$(CONFIG_SYNC)			+= sync.o sync_debug.o
-obj-$(CONFIG_SW_SYNC)			+= sw_sync.o

drivers/staging/android/sw_sync.c

-/*
- * 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/init.h>
-#include <linux/export.h>
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/syscalls.h>
-#include <linux/uaccess.h>
-
-#include "sw_sync.h"
-
-struct fence *sw_sync_pt_create(struct sync_timeline *obj, u32 value)
-{
-	return sync_pt_create(obj, sizeof(struct fence), value);
-}
-EXPORT_SYMBOL(sw_sync_pt_create);
-
-struct sync_timeline *sw_sync_timeline_create(const char *name)
-{
-	return sync_timeline_create(sizeof(struct sync_timeline),
-				    "sw_sync", name);
-}
-EXPORT_SYMBOL(sw_sync_timeline_create);
-
-void sw_sync_timeline_inc(struct sync_timeline *obj, u32 inc)
-{
-	sync_timeline_signal(obj, inc);
-}
-EXPORT_SYMBOL(sw_sync_timeline_inc);

drivers/staging/android/sw_sync.h

-/*
- * include/linux/sw_sync.h
- *
- * 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.
- *
- */
-
-#ifndef _LINUX_SW_SYNC_H
-#define _LINUX_SW_SYNC_H
-
-#include <linux/types.h>
-#include <linux/kconfig.h>
-#include "sync.h"
-#include "uapi/sw_sync.h"
-
-#if IS_ENABLED(CONFIG_SW_SYNC)
-struct sync_timeline *sw_sync_timeline_create(const char *name);
-void sw_sync_timeline_inc(struct sync_timeline *obj, u32 inc);
-
-struct fence *sw_sync_pt_create(struct sync_timeline *obj, u32 value);
-#else
-static inline struct sync_timeline *sw_sync_timeline_create(const char *name)
-{
-	return NULL;
-}
-
-static inline void sw_sync_timeline_inc(struct sync_timeline *obj, u32 inc)
-{
-}
-
-static inline struct fence *sw_sync_pt_create(struct sync_timeline *obj,
-					      u32 value)
-{
-	return NULL;
-}
-#endif /* IS_ENABLED(CONFIG_SW_SYNC) */
-
-#endif /* _LINUX_SW_SYNC_H */

drivers/staging/android/sync_debug.c

@@ -27,7 +27,11 @@
 #include <linux/anon_inodes.h>
 #include <linux/time64.h>
 #include <linux/sync_file.h>
-#include "sw_sync.h"
+#include <linux/types.h>
+#include <linux/kconfig.h>
+
+#include "uapi/sw_sync.h"
+#include "sync.h"
 
 #ifdef CONFIG_DEBUG_FS
 
@@ -200,6 +204,7 @@ static const struct file_operations sync_info_debugfs_fops = {
 	.release        = single_release,
 };
 
+#if IS_ENABLED(CONFIG_SW_SYNC)
 /*
  * *WARNING*
  *
@@ -214,7 +219,7 @@ static int sw_sync_debugfs_open(struct inode *inode, struct file *file)
 
 	get_task_comm(task_comm, current);
 
-	obj = sw_sync_timeline_create(task_comm);
+	obj = sync_timeline_create(sizeof(*obj), "sw_sync", task_comm);
 	if (!obj)
 		return -ENOMEM;
 
@@ -248,7 +253,7 @@ static long sw_sync_ioctl_create_fence(struct sync_timeline *obj,
 		goto err;
 	}
 
-	fence = sw_sync_pt_create(obj, data.value);
+	fence = sync_pt_create(obj, sizeof(*fence), data.value);
 	if (!fence) {
 		err = -ENOMEM;
 		goto err;
@@ -284,7 +289,7 @@ static long sw_sync_ioctl_inc(struct sync_timeline *obj, unsigned long arg)
 	if (copy_from_user(&value, (void __user *)arg, sizeof(value)))
 		return -EFAULT;
 
-	sw_sync_timeline_inc(obj, value);
+	sync_timeline_signal(obj, value);
 
 	return 0;
 }
@@ -312,14 +317,18 @@ static const struct file_operations sw_sync_debugfs_fops = {
 	.unlocked_ioctl = sw_sync_ioctl,
 	.compat_ioctl = sw_sync_ioctl,
 };
+#endif
 
 static __init int sync_debugfs_init(void)
 {
 	dbgfs = debugfs_create_dir("sync", NULL);
 
 	debugfs_create_file("info", 0444, dbgfs, NULL, &sync_info_debugfs_fops);
+
+#if IS_ENABLED(CONFIG_SW_SYNC)
 	debugfs_create_file("sw_sync", 0644, dbgfs, NULL,
 			    &sw_sync_debugfs_fops);
+#endif
 
 	return 0;
 }