1 files changed, 1 insertions, 6 deletions

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 7618085b4164..3732e4c09cbe 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -77,13 +77,8 @@ static void default_idle(void)
                 local_irq_enable();
                 return;
         }
-        trace_hardirqs_on();
-        /* Don't trace preempt off for idle. */
-        stop_critical_timings();
-        /* Stop virtual timer and halt the cpu. */
+        /* Halt the cpu and keep track of cpu time accounting. */
         vtime_stop_cpu();
-        /* Reenable preemption tracer. */
-        start_critical_timings();
 }
 
 void cpu_idle(void)