mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 18:17:12 +07:00
6ebb237bec
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>
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
|
|
* Read-Copy Update mechanism for mutual exclusion (tree-based version)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Copyright IBM Corporation, 2008
|
|
*
|
|
* Author: Dipankar Sarma <dipankar@in.ibm.com>
|
|
* Paul E. McKenney <paulmck@linux.vnet.ibm.com> Hierarchical algorithm
|
|
*
|
|
* Based on the original work by Paul McKenney <paulmck@us.ibm.com>
|
|
* and inputs from Rusty Russell, Andrea Arcangeli and Andi Kleen.
|
|
*
|
|
* For detailed explanation of Read-Copy Update mechanism see -
|
|
* 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_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);
|
|
|
|
#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)
|
|
{
|
|
}
|
|
|
|
#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_expedited(void);
|
|
|
|
static inline void synchronize_rcu_bh_expedited(void)
|
|
{
|
|
synchronize_sched_expedited();
|
|
}
|
|
|
|
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);
|
|
|
|
#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)
|
|
{
|
|
return num_online_cpus() == 1;
|
|
}
|
|
|
|
#endif /* __LINUX_RCUTREE_H */
|