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-rw-r--r--include/linux/taskstats_kern.h43
1 files changed, 3 insertions, 40 deletions
diff --git a/include/linux/taskstats_kern.h b/include/linux/taskstats_kern.h
index 6562a2050a2..7e9680f4afd 100644
--- a/include/linux/taskstats_kern.h
+++ b/include/linux/taskstats_kern.h
@@ -12,64 +12,27 @@
12#include <net/genetlink.h> 12#include <net/genetlink.h>
13 13
14#ifdef CONFIG_TASKSTATS 14#ifdef CONFIG_TASKSTATS
15extern kmem_cache_t *taskstats_cache; 15extern struct kmem_cache *taskstats_cache;
16extern struct mutex taskstats_exit_mutex; 16extern struct mutex taskstats_exit_mutex;
17 17
18static inline void taskstats_exit_free(struct taskstats *tidstats)
19{
20 if (tidstats)
21 kmem_cache_free(taskstats_cache, tidstats);
22}
23
24static inline void taskstats_tgid_init(struct signal_struct *sig) 18static inline void taskstats_tgid_init(struct signal_struct *sig)
25{ 19{
26 sig->stats = NULL; 20 sig->stats = NULL;
27} 21}
28 22
29static inline void taskstats_tgid_alloc(struct task_struct *tsk)
30{
31 struct signal_struct *sig = tsk->signal;
32 struct taskstats *stats;
33
34 if (sig->stats != NULL)
35 return;
36
37 /* No problem if kmem_cache_zalloc() fails */
38 stats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL);
39
40 spin_lock_irq(&tsk->sighand->siglock);
41 if (!sig->stats) {
42 sig->stats = stats;
43 stats = NULL;
44 }
45 spin_unlock_irq(&tsk->sighand->siglock);
46
47 if (stats)
48 kmem_cache_free(taskstats_cache, stats);
49}
50
51static inline void taskstats_tgid_free(struct signal_struct *sig) 23static inline void taskstats_tgid_free(struct signal_struct *sig)
52{ 24{
53 if (sig->stats) 25 if (sig->stats)
54 kmem_cache_free(taskstats_cache, sig->stats); 26 kmem_cache_free(taskstats_cache, sig->stats);
55} 27}
56 28
57extern void taskstats_exit_alloc(struct taskstats **, unsigned int *); 29extern void taskstats_exit(struct task_struct *, int group_dead);
58extern void taskstats_exit_send(struct task_struct *, struct taskstats *, int, unsigned int);
59extern void taskstats_init_early(void); 30extern void taskstats_init_early(void);
60#else 31#else
61static inline void taskstats_exit_alloc(struct taskstats **ptidstats, unsigned int *mycpu) 32static inline void taskstats_exit(struct task_struct *tsk, int group_dead)
62{}
63static inline void taskstats_exit_free(struct taskstats *ptidstats)
64{}
65static inline void taskstats_exit_send(struct task_struct *tsk,
66 struct taskstats *tidstats,
67 int group_dead, unsigned int cpu)
68{} 33{}
69static inline void taskstats_tgid_init(struct signal_struct *sig) 34static inline void taskstats_tgid_init(struct signal_struct *sig)
70{} 35{}
71static inline void taskstats_tgid_alloc(struct task_struct *tsk)
72{}
73static inline void taskstats_tgid_free(struct signal_struct *sig) 36static inline void taskstats_tgid_free(struct signal_struct *sig)
74{} 37{}
75static inline void taskstats_init_early(void) 38static inline void taskstats_init_early(void)