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rcu: Remove "extern" from function declarations in include/linux/*rcu*.h 

Function prototypes don't need to have the "extern" keyword since this
is the default behavior. Its explicit use is redundant.  This commit
therefore removes them.

Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Teodora Baluta 2013-11-11 17:11:23 +02:00 committed by Paul E. McKenney
parent d100895086
commit 584dc4ce55
4 changed files with 61 additions and 61 deletions
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4
include/linux/rculist.h
View File

@ -55,8 +55,8 @@ static inline void __list_add_rcu(struct list_head *new,
next->prev = new;
}
#else
extern void __list_add_rcu(struct list_head *new,
struct list_head *prev, struct list_head *next);
void __list_add_rcu(struct list_head *new,
struct list_head *prev, struct list_head *next);
#endif
/**

80
include/linux/rcupdate.h
View File

@ -50,13 +50,13 @@ extern int rcutorture_runnable; /* for sysctl */
#endif /* #ifdef CONFIG_RCU_TORTURE_TEST */
#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU)
extern void rcutorture_record_test_transition(void);
extern void rcutorture_record_progress(unsigned long vernum);
extern void do_trace_rcu_torture_read(const char *rcutorturename,
struct rcu_head *rhp,
unsigned long secs,
unsigned long c_old,
unsigned long c);
void rcutorture_record_test_transition(void);
void rcutorture_record_progress(unsigned long vernum);
void do_trace_rcu_torture_read(const char *rcutorturename,
struct rcu_head *rhp,
unsigned long secs,
unsigned long c_old,
unsigned long c);
#else
static inline void rcutorture_record_test_transition(void)
{
@ -65,11 +65,11 @@ static inline void rcutorture_record_progress(unsigned long vernum)
{
}
#ifdef CONFIG_RCU_TRACE
extern void do_trace_rcu_torture_read(const char *rcutorturename,
struct rcu_head *rhp,
unsigned long secs,
unsigned long c_old,
unsigned long c);
void do_trace_rcu_torture_read(const char *rcutorturename,
struct rcu_head *rhp,
unsigned long secs,
unsigned long c_old,
unsigned long c);
#else
#define do_trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
do { } while (0)
@ -118,8 +118,8 @@ extern void do_trace_rcu_torture_read(const char *rcutorturename,
* if CPU A and CPU B are the same CPU (but again only if the system has
* more than one CPU).
*/
extern void call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *head));
void call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *head));
#else /* #ifdef CONFIG_PREEMPT_RCU */
@ -149,8 +149,8 @@ extern void call_rcu(struct rcu_head *head,
* See the description of call_rcu() for more detailed information on
* memory ordering guarantees.
*/
extern void call_rcu_bh(struct rcu_head *head,
void (*func)(struct rcu_head *head));
void call_rcu_bh(struct rcu_head *head,
void (*func)(struct rcu_head *head));
/**
* call_rcu_sched() - Queue an RCU for invocation after sched grace period.
@ -171,16 +171,16 @@ extern void call_rcu_bh(struct rcu_head *head,
* See the description of call_rcu() for more detailed information on
* memory ordering guarantees.
*/
extern void call_rcu_sched(struct rcu_head *head,
void (*func)(struct rcu_head *rcu));
void call_rcu_sched(struct rcu_head *head,
void (*func)(struct rcu_head *rcu));
extern void synchronize_sched(void);
void synchronize_sched(void);
#ifdef CONFIG_PREEMPT_RCU
extern void __rcu_read_lock(void);
extern void __rcu_read_unlock(void);
extern void rcu_read_unlock_special(struct task_struct *t);
void __rcu_read_lock(void);
void __rcu_read_unlock(void);
void rcu_read_unlock_special(struct task_struct *t);
void synchronize_rcu(void);
/*
@ -216,19 +216,19 @@ static inline int rcu_preempt_depth(void)
#endif /* #else #ifdef CONFIG_PREEMPT_RCU */
/* Internal to kernel */
extern void rcu_init(void);
extern void rcu_sched_qs(int cpu);
extern void rcu_bh_qs(int cpu);
extern void rcu_check_callbacks(int cpu, int user);
void rcu_init(void);
void rcu_sched_qs(int cpu);
void rcu_bh_qs(int cpu);
void rcu_check_callbacks(int cpu, int user);
struct notifier_block;
extern void rcu_idle_enter(void);
extern void rcu_idle_exit(void);
extern void rcu_irq_enter(void);
extern void rcu_irq_exit(void);
void rcu_idle_enter(void);
void rcu_idle_exit(void);
void rcu_irq_enter(void);
void rcu_irq_exit(void);
#ifdef CONFIG_RCU_USER_QS
extern void rcu_user_enter(void);
extern void rcu_user_exit(void);
void rcu_user_enter(void);
void rcu_user_exit(void);
#else
static inline void rcu_user_enter(void) { }
static inline void rcu_user_exit(void) { }
@ -262,7 +262,7 @@ static inline void rcu_user_hooks_switch(struct task_struct *prev,
} while (0)
#if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) || defined(CONFIG_SMP)
extern bool __rcu_is_watching(void);
bool __rcu_is_watching(void);
#endif /* #if defined(CONFIG_DEBUG_LOCK_ALLOC) || defined(CONFIG_RCU_TRACE) || defined(CONFIG_SMP) */
/*
@ -289,8 +289,8 @@ void wait_rcu_gp(call_rcu_func_t crf);
* initialization.
*/
#ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD
extern void init_rcu_head_on_stack(struct rcu_head *head);
extern void destroy_rcu_head_on_stack(struct rcu_head *head);
void init_rcu_head_on_stack(struct rcu_head *head);
void destroy_rcu_head_on_stack(struct rcu_head *head);
#else /* !CONFIG_DEBUG_OBJECTS_RCU_HEAD */
static inline void init_rcu_head_on_stack(struct rcu_head *head)
{
@ -363,7 +363,7 @@ static inline int rcu_read_lock_held(void)
* rcu_read_lock_bh_held() is defined out of line to avoid #include-file
* hell.
*/
extern int rcu_read_lock_bh_held(void);
int rcu_read_lock_bh_held(void);
/**
* rcu_read_lock_sched_held() - might we be in RCU-sched read-side critical section?
@ -449,7 +449,7 @@ static inline int rcu_read_lock_sched_held(void)
#ifdef CONFIG_PROVE_RCU
extern int rcu_my_thread_group_empty(void);
int rcu_my_thread_group_empty(void);
/**
* rcu_lockdep_assert - emit lockdep splat if specified condition not met
@ -1006,7 +1006,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
__kfree_rcu(&((ptr)->rcu_head), offsetof(typeof(*(ptr)), rcu_head))
#ifdef CONFIG_RCU_NOCB_CPU
extern bool rcu_is_nocb_cpu(int cpu);
bool rcu_is_nocb_cpu(int cpu);
#else
static inline bool rcu_is_nocb_cpu(int cpu) { return false; }
#endif /* #else #ifdef CONFIG_RCU_NOCB_CPU */
@ -1014,8 +1014,8 @@ static inline bool rcu_is_nocb_cpu(int cpu) { return false; }
/* Only for use by adaptive-ticks code. */
#ifdef CONFIG_NO_HZ_FULL_SYSIDLE
extern bool rcu_sys_is_idle(void);
extern void rcu_sysidle_force_exit(void);
bool rcu_sys_is_idle(void);
void rcu_sysidle_force_exit(void);
#else /* #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */
static inline bool rcu_sys_is_idle(void)

2
include/linux/rcutiny.h
View File

@ -125,7 +125,7 @@ static inline void exit_rcu(void)
#ifdef CONFIG_DEBUG_LOCK_ALLOC
extern int rcu_scheduler_active __read_mostly;
extern void rcu_scheduler_starting(void);
void rcu_scheduler_starting(void);
#else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
static inline void rcu_scheduler_starting(void)
{

36
include/linux/rcutree.h
View File

@ -30,9 +30,9 @@
#ifndef __LINUX_RCUTREE_H
#define __LINUX_RCUTREE_H
extern void rcu_note_context_switch(int cpu);
extern int rcu_needs_cpu(int cpu, unsigned long *delta_jiffies);
extern void rcu_cpu_stall_reset(void);
void rcu_note_context_switch(int cpu);
int rcu_needs_cpu(int cpu, unsigned long *delta_jiffies);
void rcu_cpu_stall_reset(void);
/*
* Note a virtualization-based context switch. This is simply a
@ -44,9 +44,9 @@ static inline void rcu_virt_note_context_switch(int cpu)
rcu_note_context_switch(cpu);
}
extern void synchronize_rcu_bh(void);
extern void synchronize_sched_expedited(void);
extern void synchronize_rcu_expedited(void);
void synchronize_rcu_bh(void);
void synchronize_sched_expedited(void);
void synchronize_rcu_expedited(void);
void kfree_call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu));
@ -71,25 +71,25 @@ static inline void synchronize_rcu_bh_expedited(void)
synchronize_sched_expedited();
}
extern void rcu_barrier(void);
extern void rcu_barrier_bh(void);
extern void rcu_barrier_sched(void);
void rcu_barrier(void);
void rcu_barrier_bh(void);
void rcu_barrier_sched(void);
extern unsigned long rcutorture_testseq;
extern unsigned long rcutorture_vernum;
extern long rcu_batches_completed(void);
extern long rcu_batches_completed_bh(void);
extern long rcu_batches_completed_sched(void);
long rcu_batches_completed(void);
long rcu_batches_completed_bh(void);
long rcu_batches_completed_sched(void);
extern void rcu_force_quiescent_state(void);
extern void rcu_bh_force_quiescent_state(void);
extern void rcu_sched_force_quiescent_state(void);
void rcu_force_quiescent_state(void);
void rcu_bh_force_quiescent_state(void);
void rcu_sched_force_quiescent_state(void);
extern void exit_rcu(void);
void exit_rcu(void);
extern void rcu_scheduler_starting(void);
void rcu_scheduler_starting(void);
extern int rcu_scheduler_active __read_mostly;
extern bool rcu_is_watching(void);
bool rcu_is_watching(void);
#endif /* __LINUX_RCUTREE_H */