ACPI / processor: Acquire writer lock to update CPU maps

[karo-tx-linux.git] / kernel / cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index b2b227b821232d811d371fc24c672ad0fb715cf2..d7f07a2da5a6b6bcc682d39918b3bd97471d9543 100644 (file)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -113,7 +113,7 @@ EXPORT_SYMBOL_GPL(put_online_cpus);
  * get_online_cpus() not an api which is called all that often.
  *
  */
-static void cpu_hotplug_begin(void)
+void cpu_hotplug_begin(void)
 {
        cpu_hotplug.active_writer = current;
 
@@ -127,7 +127,7 @@ static void cpu_hotplug_begin(void)
        }
 }
 
-static void cpu_hotplug_done(void)
+void cpu_hotplug_done(void)
 {
        cpu_hotplug.active_writer = NULL;
        mutex_unlock(&cpu_hotplug.lock);
@@ -154,10 +154,7 @@ void cpu_hotplug_enable(void)
        cpu_maps_update_done();
 }
 
-#else /* #if CONFIG_HOTPLUG_CPU */
-static void cpu_hotplug_begin(void) {}
-static void cpu_hotplug_done(void) {}
-#endif /* #else #if CONFIG_HOTPLUG_CPU */
+#endif /* CONFIG_HOTPLUG_CPU */
 
 /* Need to know about CPUs going up/down? */
 int __ref register_cpu_notifier(struct notifier_block *nb)