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 58