1 files changed, 1 insertions, 33 deletions

diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 3cf1cef75a6a..9b2f3f51bc91 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -53,7 +53,6 @@ DEFINE_VVAR(int, vgetcpu_mode);
 DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data) =
 {
 	.lock = __SEQLOCK_UNLOCKED(__vsyscall_gtod_data.lock),
-	.sysctl_enabled = 1,
 };
 
 void update_vsyscall_tz(void)
@@ -103,15 +102,6 @@ static __always_inline int gettimeofday(struct timeval *tv, struct timezone *tz)
 	return ret;
 }
 
-static __always_inline long time_syscall(long *t)
-{
-	long secs;
-	asm volatile("syscall"
-		: "=a" (secs)
-		: "0" (__NR_time),"D" (t) : __syscall_clobber);
-	return secs;
-}
-
 static __always_inline void do_vgettimeofday(struct timeval * tv)
 {
 	cycle_t now, base, mask, cycle_delta;
@@ -122,8 +112,7 @@ static __always_inline void do_vgettimeofday(struct timeval * tv)
 		seq = read_seqbegin(&VVAR(vsyscall_gtod_data).lock);
 
 		vread = VVAR(vsyscall_gtod_data).clock.vread;
-		if (unlikely(!VVAR(vsyscall_gtod_data).sysctl_enabled ||
-			     !vread)) {
+		if (unlikely(!vread)) {
 			gettimeofday(tv,NULL);
 			return;
 		}
@@ -165,8 +154,6 @@ time_t __vsyscall(1) vtime(time_t *t)
 {
 	unsigned seq;
 	time_t result;
-	if (unlikely(!VVAR(vsyscall_gtod_data).sysctl_enabled))
-		return time_syscall(t);
 
 	do {
 		seq = read_seqbegin(&VVAR(vsyscall_gtod_data).lock);
@@ -227,22 +214,6 @@ static long __vsyscall(3) venosys_1(void)
 	return -ENOSYS;
 }
 
-#ifdef CONFIG_SYSCTL
-static ctl_table kernel_table2[] = {
-	{ .procname = "vsyscall64",
-	  .data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int),
-	  .mode = 0644,
-	  .proc_handler = proc_dointvec },
-	{}
-};
-
-static ctl_table kernel_root_table2[] = {
-	{ .procname = "kernel", .mode = 0555,
-	  .child = kernel_table2 },
-	{}
-};
-#endif
-
 /* Assume __initcall executes before all user space. Hopefully kmod
    doesn't violate that. We'll find out if it does. */
 static void __cpuinit vsyscall_set_cpu(int cpu)
@@ -301,9 +272,6 @@ static int __init vsyscall_init(void)
 	BUG_ON((unsigned long) &vtime != VSYSCALL_ADDR(__NR_vtime));
 	BUG_ON((VSYSCALL_ADDR(0) != __fix_to_virt(VSYSCALL_FIRST_PAGE)));
 	BUG_ON((unsigned long) &vgetcpu != VSYSCALL_ADDR(__NR_vgetcpu));
-#ifdef CONFIG_SYSCTL
-	register_sysctl_table(kernel_root_table2);
-#endif
 	on_each_cpu(cpu_vsyscall_init, NULL, 1);
 	/* notifier priority > KVM */
 	hotcpu_notifier(cpu_vsyscall_notifier, 30);