diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 08c41ed5e8055bdae7acb6b5f0217f90a815b05d..3903a8f2eb978f2d9c6676c8f1bc9813d749fae9 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -113,16 +113,8 @@ void default_idle(void)
 
 		local_irq_disable();
 		if (!need_resched()) {
-			ktime_t t0, t1;
-			u64 t0n, t1n;
-
-			t0 = ktime_get();
-			t0n = ktime_to_ns(t0);
 			safe_halt();	/* enables interrupts racelessly */
 			local_irq_disable();
-			t1 = ktime_get();
-			t1n = ktime_to_ns(t1);
-			sched_clock_idle_wakeup_event(t1n - t0n);
 		}
 		local_irq_enable();
 		current_thread_info()->status |= TS_POLLING;
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 4f40272474dd36f72f8156fb4639a79a020b4491..e75ccc8a2b87b7e659e0ee4c8ad74459239b98bb 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -107,16 +107,8 @@ void default_idle(void)
 	smp_mb();
 	local_irq_disable();
 	if (!need_resched()) {
-		ktime_t t0, t1;
-		u64 t0n, t1n;
-
-		t0 = ktime_get();
-		t0n = ktime_to_ns(t0);
 		safe_halt();	/* enables interrupts racelessly */
 		local_irq_disable();
-		t1 = ktime_get();
-		t1n = ktime_to_ns(t1);
-		sched_clock_idle_wakeup_event(t1n - t0n);
 	}
 	local_irq_enable();
 	current_thread_info()->status |= TS_POLLING;