clockevents: Get rid of the notifier chain

7+ years and still a single user. Kill it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Link: http://lkml.kernel.org/r/20130425143436.098520211@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 32 deletions

diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index c6d6400ee137..dd70b4842c62 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -15,7 +15,6 @@
 #include <linux/hrtimer.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/notifier.h>
 #include <linux/smp.h>
 
 #include "tick-internal.h"
@@ -23,10 +22,6 @@
 /* The registered clock event devices */
 static LIST_HEAD(clockevent_devices);
 static LIST_HEAD(clockevents_released);
-
-/* Notification for clock events */
-static RAW_NOTIFIER_HEAD(clockevents_chain);
-
 /* Protection for the above */
 static DEFINE_RAW_SPINLOCK(clockevents_lock);
 
@@ -232,30 +227,6 @@ int clockevents_program_event(struct clock_event_device *dev, ktime_t expires,
         return (rc && force) ? clockevents_program_min_delta(dev) : rc;
 }
 
-/**
- * clockevents_register_notifier - register a clock events change listener
- */
-int clockevents_register_notifier(struct notifier_block *nb)
-{
-        unsigned long flags;
-        int ret;
-
-        raw_spin_lock_irqsave(&clockevents_lock, flags);
-        ret = raw_notifier_chain_register(&clockevents_chain, nb);
-        raw_spin_unlock_irqrestore(&clockevents_lock, flags);
-
-        return ret;
-}
-
-/*
- * Notify about a clock event change. Called with clockevents_lock
- * held.
- */
-static void clockevents_do_notify(unsigned long reason, void *dev)
-{
-        raw_notifier_call_chain(&clockevents_chain, reason, dev);
-}
-
 /*
  * Called after a notify add to make devices available which were
  * released from the notifier call.
@@ -269,7 +240,7 @@ static void clockevents_notify_released(void)
                                  struct clock_event_device, list);
                 list_del(&dev->list);
                 list_add(&dev->list, &clockevent_devices);
-                clockevents_do_notify(CLOCK_EVT_NOTIFY_ADD, dev);
+                tick_check_new_device(dev);
         }
 }
 
@@ -290,7 +261,7 @@ void clockevents_register_device(struct clock_event_device *dev)
         raw_spin_lock_irqsave(&clockevents_lock, flags);
 
         list_add(&dev->list, &clockevent_devices);
-        clockevents_do_notify(CLOCK_EVT_NOTIFY_ADD, dev);
+        tick_check_new_device(dev);
         clockevents_notify_released();
 
         raw_spin_unlock_irqrestore(&clockevents_lock, flags);
@@ -433,7 +404,7 @@ void clockevents_notify(unsigned long reason, void *arg)
         int cpu;
 
         raw_spin_lock_irqsave(&clockevents_lock, flags);
-        clockevents_do_notify(reason, arg);
+        tick_notify(reason, arg);
 
         switch (reason) {
         case CLOCK_EVT_NOTIFY_CPU_DEAD: