rcu: Re-arrange code to reduce #ifdef pain
Remove #ifdefs from kernel/rcupdate.c and
include/linux/rcupdate.h by moving code to
include/linux/rcutiny.h, include/linux/rcutree.h, and
kernel/rcutree.c.
Also remove some definitions that are no longer used.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1258908830885-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index a3b6272..c4ba9a7 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -39,6 +39,11 @@
#define rcu_init_sched() do { } while (0)
extern void rcu_check_callbacks(int cpu, int user);
+static inline int rcu_needs_cpu(int cpu)
+{
+ return 0;
+}
+
/*
* Return the number of grace periods.
*/
@@ -57,6 +62,8 @@
extern int rcu_expedited_torture_stats(char *page);
+#define synchronize_rcu synchronize_sched
+
static inline void synchronize_rcu_expedited(void)
{
synchronize_sched();
@@ -86,6 +93,10 @@
#endif /* #else #ifdef CONFIG_NO_HZ */
+static inline void rcu_scheduler_starting(void)
+{
+}
+
static inline void exit_rcu(void)
{
}