netfilter: nf_conntrack: support conntrack templates

[safe/jmp/linux-2.6] / include / linux / rcutree.h

diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index a0852d0..8044b1b 100644 (file)
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -24,80 +24,82 @@
  * and inputs from Rusty Russell, Andrea Arcangeli and Andi Kleen.
  *
  * For detailed explanation of Read-Copy Update mechanism see -
- *     Documentation/RCU
+ *     Documentation/RCU
  */
 
 #ifndef __LINUX_RCUTREE_H
 #define __LINUX_RCUTREE_H
 
+struct notifier_block;
+
 extern void rcu_sched_qs(int cpu);
 extern void rcu_bh_qs(int cpu);
-
-extern int rcu_pending(int cpu);
 extern int rcu_needs_cpu(int cpu);
+extern void rcu_scheduler_starting(void);
+extern int rcu_expedited_torture_stats(char *page);
+
+#ifdef CONFIG_TREE_PREEMPT_RCU
+
+extern void __rcu_read_lock(void);
+extern void __rcu_read_unlock(void);
+extern void synchronize_rcu(void);
+extern void exit_rcu(void);
+
+/*
+ * Defined as macro as it is a very low level header
+ * included from areas that don't even know about current
+ */
+#define rcu_preempt_depth() (current->rcu_read_lock_nesting)
 
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-extern struct lockdep_map rcu_lock_map;
-# define rcu_read_acquire()    \
-                       lock_acquire(&rcu_lock_map, 0, 0, 2, 1, NULL, _THIS_IP_)
-# define rcu_read_release()    lock_release(&rcu_lock_map, 1, _THIS_IP_)
-#else
-# define rcu_read_acquire()    do { } while (0)
-# define rcu_read_release()    do { } while (0)
-#endif
+#else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
 
 static inline void __rcu_read_lock(void)
 {
        preempt_disable();
-       __acquire(RCU);
-       rcu_read_acquire();
 }
+
 static inline void __rcu_read_unlock(void)
 {
-       rcu_read_release();
-       __release(RCU);
        preempt_enable();
 }
+
+#define synchronize_rcu synchronize_sched
+
+static inline void exit_rcu(void)
+{
+}
+
+static inline int rcu_preempt_depth(void)
+{
+       return 0;
+}
+
+#endif /* #else #ifdef CONFIG_TREE_PREEMPT_RCU */
+
 static inline void __rcu_read_lock_bh(void)
 {
        local_bh_disable();
-       __acquire(RCU_BH);
-       rcu_read_acquire();
 }
 static inline void __rcu_read_unlock_bh(void)
 {
-       rcu_read_release();
-       __release(RCU_BH);
        local_bh_enable();
 }
 
-#define __synchronize_sched() synchronize_rcu()
-
 extern void call_rcu_sched(struct rcu_head *head,
                           void (*func)(struct rcu_head *rcu));
-
-static inline void synchronize_rcu_expedited(void)
-{
-       synchronize_sched_expedited();
-}
+extern void synchronize_rcu_expedited(void);
 
 static inline void synchronize_rcu_bh_expedited(void)
 {
        synchronize_sched_expedited();
 }
 
-extern void __rcu_init(void);
 extern void rcu_check_callbacks(int cpu, int user);
-extern void rcu_restart_cpu(int cpu);
 
 extern long rcu_batches_completed(void);
 extern long rcu_batches_completed_bh(void);
 extern long rcu_batches_completed_sched(void);
 
-static inline void rcu_init_sched(void)
-{
-}
-
 #ifdef CONFIG_NO_HZ
 void rcu_enter_nohz(void);
 void rcu_exit_nohz(void);
@@ -110,7 +112,7 @@ static inline void rcu_exit_nohz(void)
 }
 #endif /* CONFIG_NO_HZ */
 
-/* A context switch is a grace period for rcutree. */
+/* A context switch is a grace period for RCU-sched and RCU-bh. */
 static inline int rcu_blocking_is_gp(void)
 {
        return num_online_cpus() == 1;