blob: a5195875480aa299d96e0649f524a184cdd88413 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Read-Copy Update mechanism for mutual exclusion, the Bloatwatch edition.
*
* 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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
*
* For detailed explanation of Read-Copy Update mechanism see -
* Documentation/RCU
*/
#ifndef __LINUX_TINY_H
#define __LINUX_TINY_H
#include <linux/cache.h>
void rcu_sched_qs(int cpu);
void rcu_bh_qs(int cpu);
#define __rcu_read_lock() preempt_disable()
#define __rcu_read_unlock() preempt_enable()
#define __rcu_read_lock_bh() local_bh_disable()
#define __rcu_read_unlock_bh() local_bh_enable()
#define call_rcu_sched call_rcu
#define rcu_init_sched() do { } while (0)
extern void rcu_check_callbacks(int cpu, int user);
static inline int rcu_needs_cpu(int cpu)
{
return 0;
}
/*
* Return the number of grace periods.
*/
static inline long rcu_batches_completed(void)
{
return 0;
}
/*
* Return the number of bottom-half grace periods.
*/
static inline long rcu_batches_completed_bh(void)
{
return 0;
}
extern int rcu_expedited_torture_stats(char *page);
static inline void rcu_force_quiescent_state(void)
{
}
static inline void rcu_bh_force_quiescent_state(void)
{
}
static inline void rcu_sched_force_quiescent_state(void)
{
}
#define synchronize_rcu synchronize_sched
static inline void synchronize_rcu_expedited(void)
{
synchronize_sched();
}
static inline void synchronize_rcu_bh_expedited(void)
{
synchronize_sched();
}
struct notifier_block;
#ifdef CONFIG_NO_HZ
extern void rcu_enter_nohz(void);
extern void rcu_exit_nohz(void);
#else /* #ifdef CONFIG_NO_HZ */
static inline void rcu_enter_nohz(void)
{
}
static inline void rcu_exit_nohz(void)
{
}
#endif /* #else #ifdef CONFIG_NO_HZ */
static inline void exit_rcu(void)
{
}
static inline int rcu_preempt_depth(void)
{
return 0;
}
#endif /* __LINUX_RCUTINY_H */
|
