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 extern struct mutex taskstats_exit_mutex; 21 22 static inline void taskstats_exit_alloc(struct taskstats **ptidstats, 23 struct taskstats **ptgidstats) 24 { 25 *ptidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL); 26 *ptgidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL); 27 } 28 29 static inline void taskstats_exit_free(struct taskstats *tidstats, 30 struct taskstats *tgidstats) 31 { 32 if (tidstats) 33 kmem_cache_free(taskstats_cache, tidstats); 34 if (tgidstats) 35 kmem_cache_free(taskstats_cache, tgidstats); 36 } 37 38 extern void taskstats_exit_send(struct task_struct *, struct taskstats *, 39 struct taskstats *); 40 extern void taskstats_init_early(void); 41 42 #else 43 static inline void taskstats_exit_alloc(struct taskstats **ptidstats, 44 struct taskstats **ptgidstats) 45 {} 46 static inline void taskstats_exit_free(struct taskstats *ptidstats, 47 struct taskstats *ptgidstats) 48 {} 49 static inline void taskstats_exit_send(struct task_struct *tsk, 50 struct taskstats *tidstats, 51 struct taskstats *tgidstats) 52 {} 53 static inline void taskstats_init_early(void) 54 {} 55 #endif /* CONFIG_TASKSTATS */ 56 57 #endif 58 59