From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 15 Jul 2012 08:24:53 +0000 (+0200)
Subject: Merge branch 'timers/urgent' into timers/core
X-Git-Tag: firefly_0821_release~3680^2~1839^2~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e8b9dd7e2471b1274e3be719fcc385e0a710e46f;p=firefly-linux-kernel-4.4.55.git

Merge branch 'timers/urgent' into timers/core

Reason: Update to upstream changes to avoid further conflicts.
Fixup a trivial merge conflict in kernel/time/tick-sched.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

e8b9dd7e2471b1274e3be719fcc385e0a710e46f
diff --cc kernel/time/tick-sched.c
index 60c9c60e9108,4a08472c3ca7..41be02250e08
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@@ -271,15 -271,50 +271,15 @@@ u64 get_cpu_iowait_time_us(int cpu, u6
  }
  EXPORT_SYMBOL_GPL(get_cpu_iowait_time_us);
  
 -static void tick_nohz_stop_sched_tick(struct tick_sched *ts)
 +static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
 +					 ktime_t now, int cpu)
  {
  	unsigned long seq, last_jiffies, next_jiffies, delta_jiffies;
 +	ktime_t last_update, expires, ret = { .tv64 = 0 };
+ 	unsigned long rcu_delta_jiffies;
 -	ktime_t last_update, expires, now;
  	struct clock_event_device *dev = __get_cpu_var(tick_cpu_device).evtdev;
  	u64 time_delta;
 -	int cpu;
  
 -	cpu = smp_processor_id();
 -	ts = &per_cpu(tick_cpu_sched, cpu);
 -
 -	now = tick_nohz_start_idle(cpu, ts);
 -
 -	/*
 -	 * If this cpu is offline and it is the one which updates
 -	 * jiffies, then give up the assignment and let it be taken by
 -	 * the cpu which runs the tick timer next. If we don't drop
 -	 * this here the jiffies might be stale and do_timer() never
 -	 * invoked.
 -	 */
 -	if (unlikely(!cpu_online(cpu))) {
 -		if (cpu == tick_do_timer_cpu)
 -			tick_do_timer_cpu = TICK_DO_TIMER_NONE;
 -	}
 -
 -	if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
 -		return;
 -
 -	if (need_resched())
 -		return;
 -
 -	if (unlikely(local_softirq_pending() && cpu_online(cpu))) {
 -		static int ratelimit;
 -
 -		if (ratelimit < 10) {
 -			printk(KERN_ERR "NOHZ: local_softirq_pending %02x\n",
 -			       (unsigned int) local_softirq_pending());
 -			ratelimit++;
 -		}
 -		return;
 -	}
--
 -	ts->idle_calls++;
  	/* Read jiffies and the time when jiffies were updated last */
  	do {
  		seq = read_seqbegin(&xtime_lock);
@@@ -369,11 -406,18 +373,12 @@@
  		 */
  		if (!ts->tick_stopped) {
  			select_nohz_load_balancer(1);
+ 			calc_load_enter_idle();
  
 -			ts->idle_tick = hrtimer_get_expires(&ts->sched_timer);
 +			ts->last_tick = hrtimer_get_expires(&ts->sched_timer);
  			ts->tick_stopped = 1;
 -			ts->idle_jiffies = last_jiffies;
  		}
  
 -		ts->idle_sleeps++;
 -
 -		/* Mark expires */
 -		ts->idle_expires = expires;
 -
  		/*
  		 * If the expiration time == KTIME_MAX, then
  		 * in this case we simply stop the tick timer.