sh: Create an sh debugfs root.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/setup.c

@@ -23,6 +23,8 @@
 #include <linux/kexec.h>
 #include <linux/module.h>
 #include <linux/smp.h>
+#include <linux/err.h>
+#include <linux/debugfs.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/page.h>
@@ -443,3 +445,15 @@ const struct seq_operations cpuinfo_op = {
 	.show	= show_cpuinfo,
 };
 #endif /* CONFIG_PROC_FS */
+
+struct dentry *sh_debugfs_root;
+
+static int __init sh_debugfs_init(void)
+{
+	sh_debugfs_root = debugfs_create_dir("sh", NULL);
+	if (IS_ERR(sh_debugfs_root))
+		return PTR_ERR(sh_debugfs_root);
+
+	return 0;
+}
+arch_initcall(sh_debugfs_init);

arch/sh/mm/cache-debugfs.c

@@ -127,13 +127,13 @@ static int __init cache_debugfs_init(void)
 {
 	struct dentry *dcache_dentry, *icache_dentry;
 
-	dcache_dentry = debugfs_create_file("dcache", S_IRUSR, NULL,
+	dcache_dentry = debugfs_create_file("dcache", S_IRUSR, sh_debugfs_root,
 					    (unsigned int *)CACHE_TYPE_DCACHE,
 					    &cache_debugfs_fops);
 	if (IS_ERR(dcache_dentry))
 		return PTR_ERR(dcache_dentry);
 
-	icache_dentry = debugfs_create_file("icache", S_IRUSR, NULL,
+	icache_dentry = debugfs_create_file("icache", S_IRUSR, sh_debugfs_root,
 					    (unsigned int *)CACHE_TYPE_ICACHE,
 					    &cache_debugfs_fops);
 	if (IS_ERR(icache_dentry)) {

arch/sh/mm/pmb.c

@@ -393,7 +393,7 @@ static int __init pmb_debugfs_init(void)
 	struct dentry *dentry;
 
 	dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO,
-				     NULL, NULL, &pmb_debugfs_fops);
+				     sh_debugfs_root, NULL, &pmb_debugfs_fops);
 	if (IS_ERR(dentry))
 		return PTR_ERR(dentry);
 

include/asm-sh/system.h

@@ -146,6 +146,8 @@ extern unsigned int instruction_size(unsigned int insn);
 
 extern unsigned long cached_to_uncached;
 
+extern struct dentry *sh_debugfs_root;
+
 /* XXX
  * disable hlt during certain critical i/o operations
  */