sysctl kernel: Remove binary sysctl logic

Now that sys_sysctl is a generic wrapper around /proc/sys  .ctl_name
and .strategy members of sysctl tables are dead code.  Remove them.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

3 files changed, 3 insertions, 38 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index a455dca884a6..dbb99d787a41 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7373,17 +7373,16 @@ static struct ctl_table sd_ctl_dir[] = {
                 .procname       = "sched_domain",
                 .mode           = 0555,
         },
-        {0, },
+        {}
 };
 
 static struct ctl_table sd_ctl_root[] = {
         {
-                .ctl_name       = CTL_KERN,
                 .procname       = "kernel",
                 .mode           = 0555,
                 .child          = sd_ctl_dir,
         },
-        {0, },
+        {}
 };
 
 static struct ctl_table *sd_alloc_ctl_entry(int n)
diff --git a/kernel/slow-work.c b/kernel/slow-work.c
index 0d31135efbf4..0134b15b38d8 100644
--- a/kernel/slow-work.c
+++ b/kernel/slow-work.c
@@ -52,7 +52,6 @@ static const int slow_work_max_vslow = 99;
 
 ctl_table slow_work_sysctls[] = {
         {
-                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "min-threads",
                 .data           = &slow_work_min_threads,
                 .maxlen         = sizeof(unsigned),
@@ -62,7 +61,6 @@ ctl_table slow_work_sysctls[] = {
                 .extra2         = &slow_work_max_threads,
         },
         {
-                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "max-threads",
                 .data           = &slow_work_max_threads,
                 .maxlen         = sizeof(unsigned),
@@ -72,7 +70,6 @@ ctl_table slow_work_sysctls[] = {
                 .extra2         = (void *) &slow_work_max_max_threads,
         },
         {
-                .ctl_name       = CTL_UNNUMBERED,
                 .procname       = "vslow-percentage",
                 .data           = &vslow_work_proportion,
                 .maxlen         = sizeof(unsigned),
@@ -81,7 +78,7 @@ ctl_table slow_work_sysctls[] = {
                 .extra1         = (void *) &slow_work_min_vslow,
                 .extra2         = (void *) &slow_work_max_vslow,
         },
-        { .ctl_name = 0 }
+        {}
 };
 #endif
 
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index 69eae358a726..a2cd77e70d4d 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -57,78 +57,47 @@ static int proc_do_uts_string(ctl_table *table, int write,
 #define proc_do_uts_string NULL
 #endif
 
-
-#ifdef CONFIG_SYSCTL_SYSCALL
-/* The generic string strategy routine: */
-static int sysctl_uts_string(ctl_table *table,
-                  void __user *oldval, size_t __user *oldlenp,
-                  void __user *newval, size_t newlen)
-{
-        struct ctl_table uts_table;
-        int r, write;
-        write = newval && newlen;
-        memcpy(&uts_table, table, sizeof(uts_table));
-        uts_table.data = get_uts(table, write);
-        r = sysctl_string(&uts_table, oldval, oldlenp, newval, newlen);
-        put_uts(table, write, uts_table.data);
-        return r;
-}
-#else
-#define sysctl_uts_string NULL
-#endif
-
 static struct ctl_table uts_kern_table[] = {
         {
-                .ctl_name       = KERN_OSTYPE,
                 .procname       = "ostype",
                 .data           = init_uts_ns.name.sysname,
                 .maxlen         = sizeof(init_uts_ns.name.sysname),
                 .mode           = 0444,
                 .proc_handler   = proc_do_uts_string,
-                .strategy       = sysctl_uts_string,
         },
         {
-                .ctl_name       = KERN_OSRELEASE,
                 .procname       = "osrelease",
                 .data           = init_uts_ns.name.release,
                 .maxlen         = sizeof(init_uts_ns.name.release),
                 .mode           = 0444,
                 .proc_handler   = proc_do_uts_string,
-                .strategy       = sysctl_uts_string,
         },
         {
-                .ctl_name       = KERN_VERSION,
                 .procname       = "version",
                 .data           = init_uts_ns.name.version,
                 .maxlen         = sizeof(init_uts_ns.name.version),
                 .mode           = 0444,
                 .proc_handler   = proc_do_uts_string,
-                .strategy       = sysctl_uts_string,
         },
         {
-                .ctl_name       = KERN_NODENAME,
                 .procname       = "hostname",
                 .data           = init_uts_ns.name.nodename,
                 .maxlen         = sizeof(init_uts_ns.name.nodename),
                 .mode           = 0644,
                 .proc_handler   = proc_do_uts_string,
-                .strategy       = sysctl_uts_string,
         },
         {
-                .ctl_name       = KERN_DOMAINNAME,
                 .procname       = "domainname",
                 .data           = init_uts_ns.name.domainname,
                 .maxlen         = sizeof(init_uts_ns.name.domainname),
                 .mode           = 0644,
                 .proc_handler   = proc_do_uts_string,
-                .strategy       = sysctl_uts_string,
         },
         {}
 };
 
 static struct ctl_table uts_root_table[] = {
         {
-                .ctl_name       = CTL_KERN,
                 .procname       = "kernel",
                 .mode           = 0555,
                 .child          = uts_kern_table,