time: simplify smp_call_function_single() call sequence

smp_call_function_single() now knows how to call the function on the
current cpu.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 13 deletions

diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index fc3fc79b3d59..fab9dd8bbd6b 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -274,21 +274,12 @@ out:
  */
 void tick_broadcast_on_off(unsigned long reason, int *oncpu)
 {
-        int cpu = get_cpu();
-
-        if (!cpu_isset(*oncpu, cpu_online_map)) {
+        if (!cpu_isset(*oncpu, cpu_online_map))
                 printk(KERN_ERR "tick-braodcast: ignoring broadcast for "
                        "offline CPU #%d\n", *oncpu);
-        } else {
-
-                if (cpu == *oncpu)
-                        tick_do_broadcast_on_off(&reason);
-                else
-                        smp_call_function_single(*oncpu,
-                                                 tick_do_broadcast_on_off,
-                                                 &reason, 1, 1);
-        }
-        put_cpu();
+        else
+                smp_call_function_single(*oncpu, tick_do_broadcast_on_off,
+                                         &reason, 1, 1);
 }
 
 /*