Remove "#ifdef __KERNEL__" checks from unexported headers

[linux-beck.git] / include / linux / rcupdate.h

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 12aa13e13150fcdb41d74eed1e6e8d8dfb9692e1..8082d6587a0f6544a1ec6c28af922dc01a4b90ea 100644 (file)
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -33,8 +33,6 @@
 #ifndef __LINUX_RCUPDATE_H
 #define __LINUX_RCUPDATE_H
 
-#ifdef __KERNEL__
-
 #include <linux/cache.h>
 #include <linux/spinlock.h>
 #include <linux/threads.h>
@@ -53,7 +51,11 @@ struct rcu_head {
        void (*func)(struct rcu_head *head);
 };
 
+#ifdef CONFIG_CLASSIC_RCU
 #include <linux/rcuclassic.h>
+#else /* #ifdef CONFIG_CLASSIC_RCU */
+#include <linux/rcupreempt.h>
+#endif /* #else #ifdef CONFIG_CLASSIC_RCU */
 
 #define RCU_HEAD_INIT  { .next = NULL, .func = NULL }
 #define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT
@@ -170,10 +172,13 @@ struct rcu_head {
  * code.
  */
 
-#define rcu_assign_pointer(p, v)       ({ \
-                                               smp_wmb(); \
-                                               (p) = (v); \
-                                       })
+#define rcu_assign_pointer(p, v) \
+       ({ \
+               if (!__builtin_constant_p(v) || \
+                   ((v) != NULL)) \
+                       smp_wmb(); \
+               (p) = (v); \
+       })
 
 /**
  * synchronize_sched - block until all CPUs have exited any non-preemptive
@@ -231,13 +236,11 @@ extern void call_rcu_bh(struct rcu_head *head,
 /* Exported common interfaces */
 extern void synchronize_rcu(void);
 extern void rcu_barrier(void);
+extern long rcu_batches_completed(void);
+extern long rcu_batches_completed_bh(void);
 
 /* Internal to kernel */
 extern void rcu_init(void);
-extern void rcu_check_callbacks(int cpu, int user);
-
-extern long rcu_batches_completed(void);
-extern long rcu_batches_completed_bh(void);
+extern int rcu_needs_cpu(int cpu);
 
-#endif /* __KERNEL__ */
 #endif /* __LINUX_RCUPDATE_H */