| Shailabh Nagar | c757249 | 2006-07-14 00:24:40 -0700 | [diff] [blame^] | 1 | /* taskstats_kern.h - kernel header for per-task statistics interface |
| 2 | * |
| 3 | * Copyright (C) Shailabh Nagar, IBM Corp. 2006 |
| 4 | * (C) Balbir Singh, IBM Corp. 2006 |
| 5 | */ |
| 6 | |
| 7 | #ifndef _LINUX_TASKSTATS_KERN_H |
| 8 | #define _LINUX_TASKSTATS_KERN_H |
| 9 | |
| 10 | #include <linux/taskstats.h> |
| 11 | #include <linux/sched.h> |
| 12 | |
| 13 | enum { |
| 14 | TASKSTATS_MSG_UNICAST, /* send data only to requester */ |
| 15 | TASKSTATS_MSG_MULTICAST, /* send data to a group */ |
| 16 | }; |
| 17 | |
| 18 | #ifdef CONFIG_TASKSTATS |
| 19 | extern kmem_cache_t *taskstats_cache; |
| 20 | |
| 21 | static inline void taskstats_exit_alloc(struct taskstats **ptidstats, |
| 22 | struct taskstats **ptgidstats) |
| 23 | { |
| 24 | *ptidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL); |
| 25 | *ptgidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL); |
| 26 | } |
| 27 | |
| 28 | static inline void taskstats_exit_free(struct taskstats *tidstats, |
| 29 | struct taskstats *tgidstats) |
| 30 | { |
| 31 | if (tidstats) |
| 32 | kmem_cache_free(taskstats_cache, tidstats); |
| 33 | if (tgidstats) |
| 34 | kmem_cache_free(taskstats_cache, tgidstats); |
| 35 | } |
| 36 | |
| 37 | extern void taskstats_exit_send(struct task_struct *, struct taskstats *, |
| 38 | struct taskstats *); |
| 39 | extern void taskstats_init_early(void); |
| 40 | |
| 41 | #else |
| 42 | static inline void taskstats_exit_alloc(struct taskstats **ptidstats, |
| 43 | struct taskstats **ptgidstats) |
| 44 | {} |
| 45 | static inline void taskstats_exit_free(struct taskstats *ptidstats, |
| 46 | struct taskstats *ptgidstats) |
| 47 | {} |
| 48 | static inline void taskstats_exit_send(struct task_struct *tsk, |
| 49 | struct taskstats *tidstats, |
| 50 | struct taskstats *tgidstats) |
| 51 | {} |
| 52 | static inline void taskstats_init_early(void) |
| 53 | {} |
| 54 | #endif /* CONFIG_TASKSTATS */ |
| 55 | |
| 56 | #endif |
| 57 | |