1 files changed, 9 insertions, 5 deletions

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 95e41f7f850b..51556b95f60f 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -21,6 +21,8 @@
 #include <linux/sched.h>
 #include <linux/tick.h>
 
+#include <asm/irq_regs.h>
+
 #include "tick-internal.h"
 
 /*
@@ -165,7 +167,9 @@ void tick_nohz_stop_sched_tick(void)
                 goto end;
 
         cpu = smp_processor_id();
-        BUG_ON(local_softirq_pending());
+        if (unlikely(local_softirq_pending()))
+                printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
+                       local_softirq_pending());
 
         now = ktime_get();
         /*
@@ -191,19 +195,19 @@ void tick_nohz_stop_sched_tick(void)
         next_jiffies = get_next_timer_interrupt(last_jiffies);
         delta_jiffies = next_jiffies - last_jiffies;
 
+        if (rcu_needs_cpu(cpu))
+                delta_jiffies = 1;
         /*
          * Do not stop the tick, if we are only one off
          * or if the cpu is required for rcu
          */
-        if (!ts->tick_stopped && (delta_jiffies == 1 || rcu_needs_cpu(cpu)))
+        if (!ts->tick_stopped && delta_jiffies == 1)
                 goto out;
 
         /* Schedule the tick, if we are at least one jiffie off */
         if ((long)delta_jiffies >= 1) {
 
-                if (rcu_needs_cpu(cpu))
-                        delta_jiffies = 1;
-                else
+                if (delta_jiffies > 1)
                         cpu_set(cpu, nohz_cpu_mask);
                 /*
                  * nohz_stop_sched_tick can be called several times before