1 /* taskstats_kern.h - kernel header for per-task statistics interface
3 * Copyright (C) Shailabh Nagar, IBM Corp. 2006
4 * (C) Balbir Singh, IBM Corp. 2006
7 #ifndef _LINUX_TASKSTATS_KERN_H
8 #define _LINUX_TASKSTATS_KERN_H
10 #include <linux/taskstats.h>
11 #include <linux/sched.h>
12 #include <net/genetlink.h>
14 #ifdef CONFIG_TASKSTATS
15 extern struct kmem_cache *taskstats_cache;
16 extern struct mutex taskstats_exit_mutex;
18 static inline void taskstats_tgid_init(struct signal_struct *sig)
23 static inline void taskstats_tgid_alloc(struct task_struct *tsk)
25 struct signal_struct *sig = tsk->signal;
26 struct taskstats *stats;
28 if (sig->stats != NULL)
31 /* No problem if kmem_cache_zalloc() fails */
32 stats = kmem_cache_zalloc(taskstats_cache, GFP_KERNEL);
34 spin_lock_irq(&tsk->sighand->siglock);
39 spin_unlock_irq(&tsk->sighand->siglock);
42 kmem_cache_free(taskstats_cache, stats);
45 static inline void taskstats_tgid_free(struct signal_struct *sig)
48 kmem_cache_free(taskstats_cache, sig->stats);
51 extern void taskstats_exit(struct task_struct *, int group_dead);
52 extern void taskstats_init_early(void);
54 static inline void taskstats_exit(struct task_struct *tsk, int group_dead)
56 static inline void taskstats_tgid_init(struct signal_struct *sig)
58 static inline void taskstats_tgid_alloc(struct task_struct *tsk)
60 static inline void taskstats_tgid_free(struct signal_struct *sig)
62 static inline void taskstats_init_early(void)
64 #endif /* CONFIG_TASKSTATS */