lib/percpu_counter.c: enclose hotplug only variables in hotplug ifdef
These variables are only used when CONFIG_HOTPLUG_CPU is enabled, they are
ifdef'ed everywhere else. So don't define them when CONFIG_HOTPLUG_CPU is
not enabled.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index f087105..f8a3f1a 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -10,8 +10,10 @@
#include <linux/module.h>
#include <linux/debugobjects.h>
+#ifdef CONFIG_HOTPLUG_CPU
static LIST_HEAD(percpu_counters);
static DEFINE_MUTEX(percpu_counters_lock);
+#endif
#ifdef CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER