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-rw-r--r--kernel/hrtimer.c7
-rw-r--r--kernel/posix-cpu-timers.c3
-rw-r--r--kernel/time/tick-sched.c8
3 files changed, 13 insertions, 5 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index ab80515008f4..ffca825d24bc 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -300,11 +300,10 @@ EXPORT_SYMBOL_GPL(ktime_sub_ns);
300 */ 300 */
301u64 ktime_divns(const ktime_t kt, s64 div) 301u64 ktime_divns(const ktime_t kt, s64 div)
302{ 302{
303 u64 dclc, inc, dns; 303 u64 dclc;
304 int sft = 0; 304 int sft = 0;
305 305
306 dclc = dns = ktime_to_ns(kt); 306 dclc = ktime_to_ns(kt);
307 inc = div;
308 /* Make sure the divisor is less than 2^32: */ 307 /* Make sure the divisor is less than 2^32: */
309 while (div >> 32) { 308 while (div >> 32) {
310 sft++; 309 sft++;
@@ -632,8 +631,6 @@ void clock_was_set(void)
632 */ 631 */
633void hres_timers_resume(void) 632void hres_timers_resume(void)
634{ 633{
635 WARN_ON_ONCE(num_online_cpus() > 1);
636
637 /* Retrigger the CPU local events: */ 634 /* Retrigger the CPU local events: */
638 retrigger_next_event(NULL); 635 retrigger_next_event(NULL);
639} 636}
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index f1525ad06cb3..c42a03aef36f 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1037,6 +1037,9 @@ static void check_thread_timers(struct task_struct *tsk,
1037 sig->rlim[RLIMIT_RTTIME].rlim_cur += 1037 sig->rlim[RLIMIT_RTTIME].rlim_cur +=
1038 USEC_PER_SEC; 1038 USEC_PER_SEC;
1039 } 1039 }
1040 printk(KERN_INFO
1041 "RT Watchdog Timeout: %s[%d]\n",
1042 tsk->comm, task_pid_nr(tsk));
1040 __group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk); 1043 __group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);
1041 } 1044 }
1042 } 1045 }
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index b854a895591e..86baa4f0dfe4 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -48,6 +48,13 @@ static void tick_do_update_jiffies64(ktime_t now)
48 unsigned long ticks = 0; 48 unsigned long ticks = 0;
49 ktime_t delta; 49 ktime_t delta;
50 50
51 /*
52 * Do a quick check without holding xtime_lock:
53 */
54 delta = ktime_sub(now, last_jiffies_update);
55 if (delta.tv64 < tick_period.tv64)
56 return;
57
51 /* Reevalute with xtime_lock held */ 58 /* Reevalute with xtime_lock held */
52 write_seqlock(&xtime_lock); 59 write_seqlock(&xtime_lock);
53 60
@@ -228,6 +235,7 @@ void tick_nohz_stop_sched_tick(void)
228 local_softirq_pending()); 235 local_softirq_pending());
229 ratelimit++; 236 ratelimit++;
230 } 237 }
238 goto end;
231 } 239 }
232 240
233 ts->idle_calls++; 241 ts->idle_calls++;