clockevents: Make tick handover explicit

clockevents_notify() is a leftover from the early design of the
clockevents facility. It's really not a notification mechanism,
it's a multiplex call. We are way better off to have explicit
calls instead of this monstrosity.

Split out the tick_handover call and invoke it explicitely from
the hotplug code. Temporary solution will be cleaned up in later
patches.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[ Rebase ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1658173.RkEEILFiQZ@vostro.rjw.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index f97f498a5d10..f4bde22f8a05 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -11,7 +11,6 @@
 /* Clock event notification values */
 enum clock_event_nofitiers {
         CLOCK_EVT_NOTIFY_ADD,
-        CLOCK_EVT_NOTIFY_CPU_DYING,
         CLOCK_EVT_NOTIFY_CPU_DEAD,
 };
 
diff --git a/include/linux/tick.h b/include/linux/tick.h
index 6119321fc3be..2c68fa3b9436 100644
--- a/include/linux/tick.h
+++ b/include/linux/tick.h
@@ -19,12 +19,14 @@ extern void tick_unfreeze(void);
 extern void tick_suspend_local(void);
 /* Should be core only, but XEN resume magic and ARM BL switcher require it */
 extern void tick_resume_local(void);
+extern void tick_handover_do_timer(void);
 #else /* CONFIG_GENERIC_CLOCKEVENTS */
 static inline void tick_init(void) { }
 static inline void tick_freeze(void) { }
 static inline void tick_unfreeze(void) { }
 static inline void tick_suspend_local(void) { }
 static inline void tick_resume_local(void) { }
+static inline void tick_handover_do_timer(void) { }
 #endif /* !CONFIG_GENERIC_CLOCKEVENTS */
 
 #ifdef CONFIG_TICK_ONESHOT