smp: Implement kick_all_cpus_sync()

Will replace the misnomed cpu_idle_wait() function which is copied a
gazillion times all over arch/*

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120507175652.049316594@linutronix.de

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/smp.h b/include/linux/smp.h
index 24360de6c968..717fb746c9a8 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -81,6 +81,8 @@ void __smp_call_function_single(int cpuid, struct call_single_data *data,
 int smp_call_function_any(const struct cpumask *mask,
                           smp_call_func_t func, void *info, int wait);
 
+void kick_all_cpus_sync(void);
+
 /*
  * Generic and arch helpers
  */
@@ -192,6 +194,8 @@ smp_call_function_any(const struct cpumask *mask, smp_call_func_t func,
         return smp_call_function_single(0, func, info, wait);
 }
 
+static inline void kick_all_cpus_sync(void) {  }
+
 #endif /* !SMP */
 
 /*