linux-next: manual merge of the timers tree

[Stephen Rothwell <sfr@canb.auug.org.au>]

Hi all,

Today's linux-next merge of the timers tree got a conflict in
kernel/time/tick-sched.c between commit
6a7b3dc3440f7b5a9b67594af01ed562cdeb41e4 ("sched: convert nohz_cpu_mask
to cpumask_var_t") from the cpus4096 tree and commit
001474491fabeca233168a8598f721c808040f90 ("nohz: suppress needless timer
reprogramming") from the timers tree.

Just context changing.  I fixed it up (see below) and can carry the fix as
necessary.
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

diff --cc kernel/time/tick-sched.c
index 70f872c,8f3fc25..0000000
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@@ -282,8 -282,31 +282,31 @@@ void tick_nohz_stop_sched_tick(int inid
  	/* Schedule the tick, if we are at least one jiffie off */
  	if ((long)delta_jiffies >= 1) {
  
+ 		/*
+ 		* calculate the expiry time for the next timer wheel
+ 		* timer
+ 		*/
+ 		expires = ktime_add_ns(last_update, tick_period.tv64 *
+ 				   delta_jiffies);
+ 
+ 		/*
+ 		 * If this cpu 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, which might be
+ 		 * this cpu as well. If we don't drop this here the
+ 		 * jiffies might be stale and do_timer() never
+ 		 * invoked.
+ 		 */
+ 		if (cpu == tick_do_timer_cpu)
+ 			tick_do_timer_cpu = TICK_DO_TIMER_NONE;
+ 
  		if (delta_jiffies > 1)
 -			cpu_set(cpu, nohz_cpu_mask);
 +			cpumask_set_cpu(cpu, nohz_cpu_mask);
+ 
+ 		/* Skip reprogram of event if its not changed */
+ 		if (ts->tick_stopped && ktime_equal(expires, dev->next_event))
+ 			goto out;
+ 
  		/*
  		 * nohz_stop_sched_tick can be called several times before
  		 * the nohz_restart_sched_tick is called. This happens when