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
|
/* taskstats_kern.h - kernel header for per-task statistics interface
*
* Copyright (C) Shailabh Nagar, IBM Corp. 2006
* (C) Balbir Singh, IBM Corp. 2006
*/
#ifndef _LINUX_TASKSTATS_KERN_H
#define _LINUX_TASKSTATS_KERN_H
#include <linux/taskstats.h>
#include <linux/sched.h>
#include <net/genetlink.h>
#ifdef CONFIG_TASKSTATS
extern kmem_cache_t *taskstats_cache;
extern struct mutex taskstats_exit_mutex;
static inline void taskstats_exit_free(struct taskstats *tidstats)
{
if (tidstats)
kmem_cache_free(taskstats_cache, tidstats);
}
static inline void taskstats_tgid_init(struct signal_struct *sig)
{
spin_lock_init(&sig->stats_lock);
sig->stats = NULL;
}
static inline void taskstats_tgid_alloc(struct signal_struct *sig)
{
struct taskstats *stats;
unsigned long flags;
if (sig->stats != NULL)
return;
stats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL);
if (!stats)
return;
spin_lock_irqsave(&sig->stats_lock, flags);
if (!sig->stats) {
sig->stats = stats;
stats = NULL;
}
spin_unlock_irqrestore(&sig->stats_lock, flags);
if (stats)
kmem_cache_free(taskstats_cache, stats);
}
static inline void taskstats_tgid_free(struct signal_struct *sig)
{
if (sig->stats)
kmem_cache_free(taskstats_cache, sig->stats);
}
extern void taskstats_exit_alloc(struct taskstats **, unsigned int *);
extern void taskstats_exit_send(struct task_struct *, struct taskstats *, int, unsigned int);
extern void taskstats_init_early(void);
extern void taskstats_tgid_alloc(struct signal_struct *);
#else
static inline void taskstats_exit_alloc(struct taskstats **ptidstats, unsigned int *mycpu)
{}
static inline void taskstats_exit_free(struct taskstats *ptidstats)
{}
static inline void taskstats_exit_send(struct task_struct *tsk,
struct taskstats *tidstats,
int group_dead, unsigned int cpu)
{}
static inline void taskstats_tgid_init(struct signal_struct *sig)
{}
static inline void taskstats_tgid_alloc(struct signal_struct *sig)
{}
static inline void taskstats_tgid_free(struct signal_struct *sig)
{}
static inline void taskstats_init_early(void)
{}
#endif /* CONFIG_TASKSTATS */
#endif
|
