sysctl: Register the base sysctl table like any other sysctl table.

Simplify the code by treating the base sysctl table like any other
sysctl table and register it with register_sysctl_table.

To ensure this table is registered early enough to avoid problems
call sysctl_init from proc_sys_init.

Rename sysctl_net.c:sysctl_init() to net_sysctl_init() to avoid
name conflicts now that kernel/sysctl.c:sysctl_init() is no longer
static.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index d5bbddd0de24..ad460248acc7 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -192,7 +192,7 @@ static int sysrq_sysctl_handler(ctl_table *table, int write,
 
 #endif
 
-static struct ctl_table root_table[];
+static struct ctl_table root_table[1];
 static struct ctl_table_root sysctl_table_root;
 static struct ctl_table_header root_table_header = {
         {{.count = 1,
@@ -222,7 +222,7 @@ int sysctl_legacy_va_layout;
 
 /* The default sysctl tables: */
 
-static struct ctl_table root_table[] = {
+static struct ctl_table sysctl_base_table[] = {
         {
                 .procname       = "kernel",
                 .mode           = 0555,
@@ -1747,17 +1747,12 @@ static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
         }
 }
 
-static __init int sysctl_init(void)
+int __init sysctl_init(void)
 {
-        sysctl_set_parent(NULL, root_table);
-#ifdef CONFIG_SYSCTL_SYSCALL_CHECK
-        sysctl_check_table(current->nsproxy, root_table);
-#endif
+        register_sysctl_table(sysctl_base_table);
         return 0;
 }
 
-core_initcall(sysctl_init);
-
 static struct ctl_table *is_branch_in(struct ctl_table *branch,
                                       struct ctl_table *table)
 {