move /proc/xen to /proc/sys/xen in xen linux

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/arch/xen/kernel/gnttab.c
@@ -442,7 +442,7 @@
 	 *  /proc/xen/grant : used by libxc to access grant tables
 	 */
 	if ((grant_pde = create_xen_proc_entry("grant", 0600)) == NULL) {
-		WPRINTK("Unable to create grant xen proc entry\n");
+		WPRINTK("Unable to create /proc/sys/xen/grant_pde.\n");
 		return -1;
 	}
 

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/arch/xen/kernel/xen_proc.c
@@ -8,8 +8,9 @@
 struct proc_dir_entry *create_xen_proc_entry(const char *name, mode_t mode)
 {
 	if ( xen_base == NULL )
-		if ( (xen_base = proc_mkdir("xen", &proc_root)) == NULL )
+		if ( (xen_base = proc_mkdir("sys/xen", NULL)) == NULL ) {
 			panic("Couldn't create /proc/xen");
+		}
 	return create_proc_entry(name, mode, xen_base);
 }
 

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
@@ -470,7 +470,7 @@
 	balloon_timer.function = balloon_alarm;
     
 	if ((balloon_pde = create_xen_proc_entry("balloon", 0644)) == NULL) {
-		WPRINTK("Unable to create /proc/xen/balloon.\n");
+		WPRINTK("Unable to create /proc/sys/xen/balloon.\n");
 		return -1;
 	}
 

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/drivers/xen/privcmd/privcmd.c
@@ -38,6 +38,8 @@
 #endif
 
 static struct proc_dir_entry *privcmd_intf;
+#define WPRINTK(fmt, args...) \
+	printk(KERN_WARNING "xen_privcmd: " fmt, ##args)
 
 static int privcmd_ioctl(struct inode *inode, struct file *file,
                          unsigned int cmd, unsigned long data)

@@ -254,10 +256,11 @@
 
 static int __init privcmd_init(void)
 {
-	privcmd_intf = create_xen_proc_entry("privcmd", 0400);
-	if (privcmd_intf != NULL)
-		privcmd_intf->proc_fops = &privcmd_file_ops;
-
+	if ((privcmd_intf = create_xen_proc_entry("privcmd", 0400)) == NULL ) {
+		WPRINTK("Unable to create /proc/sys/xen/privcmd.\n");
+		return -1;	
+	}
+	privcmd_intf->proc_fops = &privcmd_file_ops;
 	return 0;
 }
 

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_dev.c
@@ -44,6 +44,9 @@
 #include <asm-xen/xenbus.h>
 #include <asm-xen/xen_proc.h>
 #include <asm/hypervisor.h>
+
+#define WPRINTK(fmt, args...) \
+	printk(KERN_WARNING "xenbus: " fmt, ##args)
 
 struct xenbus_dev_transaction {
 	struct list_head list;

@@ -221,10 +224,11 @@
 static int __init
 xenbus_dev_init(void)
 {
-	xenbus_dev_intf = create_xen_proc_entry("xenbus", 0400);
-	if (xenbus_dev_intf)
-		xenbus_dev_intf->proc_fops = &xenbus_dev_file_ops;
-
+	if((xenbus_dev_intf = create_xen_proc_entry("xenbus", 0400)) == NULL) {
+		WPRINTK("Unable to create /proc/sys/xen/xenbus.\n");
+		return -1;	
+	}
+	xenbus_dev_intf->proc_fops = &xenbus_dev_file_ops;
 	return 0;
 }
 

diff -r 9bf6f907b3ff -r 133b58ab5a8f linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
@@ -58,6 +58,8 @@
 extern struct semaphore xenwatch_mutex;
 
 #define streq(a, b) (strcmp((a), (b)) == 0)
+#define WPRINTK(fmt, args...) \
+	printk(KERN_WARNING "xenbus_probe: " fmt, ##args)
 
 static struct notifier_block *xenstore_chain;
 

@@ -964,10 +966,17 @@
 		xen_start_info->store_evtchn = op.u.alloc_unbound.port;
 
 		/* And finally publish the above info in /proc/xen */
-		if((xsd_mfn_intf = create_xen_proc_entry("xsd_mfn", 0400)))
-			xsd_mfn_intf->read_proc = xsd_mfn_read; 
-		if((xsd_port_intf = create_xen_proc_entry("xsd_port", 0400)))
-			xsd_port_intf->read_proc = xsd_port_read;
+		if((xsd_mfn_intf = create_xen_proc_entry("xsd_mfn", 0400)) == NULL ) {
+			WPRINTK("Unable to create /proc/sys/xen/xsd_mfn.\n");
+			return -1;	
+		}
+		xsd_mfn_intf->read_proc = xsd_mfn_read; 
+		
+		if((xsd_port_intf = create_xen_proc_entry("xsd_port", 0400)) == NULL ) {
+			WPRINTK("Unable to create /proc/sys/xen/xsd_port.\n");
+			return -1;	
+		}
+		xsd_port_intf->read_proc = xsd_port_read;
 	}
 
 	/* Initialize the interface to xenstore. */