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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-08-17 14:18:46 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-08-20 09:00:16 -0700
commit7b0b759b65247cbc66384a912be9acf8d4800636 (patch)
tree085a18f506193725ab16fa61cae41f93dcc7c3e9 /include/linux/rcutree.h
parent73d4da4d360136826b36f78f5cf72b29da82c8a6 (diff)
rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCU
The CONFIG_PREEMPT_RCU kernel configuration parameter was recently re-introduced, but as an indication of the type of RCU (preemptible vs. non-preemptible) instead of as selecting a given implementation. This commit uses CONFIG_PREEMPT_RCU to combine duplicate code from include/linux/rcutiny.h and include/linux/rcutree.h into include/linux/rcupdate.h. This commit also combines a few other pieces of duplicate code that have accumulated. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rcutree.h')
-rw-r--r--include/linux/rcutree.h50
1 files changed, 0 insertions, 50 deletions
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 54a20c11f98d..95518e628794 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -30,59 +30,23 @@
#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 void rcu_note_context_switch(int cpu);
extern int rcu_needs_cpu(int cpu);
extern void rcu_cpu_stall_reset(void);
#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);
#else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
-static inline void __rcu_read_lock(void)
-{
- preempt_disable();
-}
-
-static inline void __rcu_read_unlock(void)
-{
- 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();
-}
-static inline void __rcu_read_unlock_bh(void)
-{
- local_bh_enable();
-}
-
-extern void call_rcu_sched(struct rcu_head *head,
- void (*func)(struct rcu_head *rcu));
extern void synchronize_rcu_bh(void);
-extern void synchronize_sched(void);
extern void synchronize_rcu_expedited(void);
static inline void synchronize_rcu_bh_expedited(void)
@@ -92,8 +56,6 @@ static inline void synchronize_rcu_bh_expedited(void)
extern void rcu_barrier(void);
-extern void rcu_check_callbacks(int cpu, int user);
-
extern long rcu_batches_completed(void);
extern long rcu_batches_completed_bh(void);
extern long rcu_batches_completed_sched(void);
@@ -101,18 +63,6 @@ extern void rcu_force_quiescent_state(void);
extern void rcu_bh_force_quiescent_state(void);
extern void rcu_sched_force_quiescent_state(void);
-#ifdef CONFIG_NO_HZ
-void rcu_enter_nohz(void);
-void rcu_exit_nohz(void);
-#else /* CONFIG_NO_HZ */
-static inline void rcu_enter_nohz(void)
-{
-}
-static inline void rcu_exit_nohz(void)
-{
-}
-#endif /* CONFIG_NO_HZ */
-
/* A context switch is a grace period for RCU-sched and RCU-bh. */
static inline int rcu_blocking_is_gp(void)
{