1 #ifndef _LINUX_PROFILE_H
2 #define _LINUX_PROFILE_H
6 #include <linux/kernel.h>
7 #include <linux/init.h>
8 #include <linux/cpumask.h>
9 #include <linux/cache.h>
11 #include <asm/errno.h>
13 extern int prof_on __read_mostly;
15 #define CPU_PROFILING 1
16 #define SCHED_PROFILING 2
17 #define SLEEP_PROFILING 3
19 struct proc_dir_entry;
21 struct notifier_block;
23 /* init basic kernel profiler */
24 void __init profile_init(void);
25 void profile_tick(int);
28 * Add multiple profiler hits to a given address:
30 void profile_hits(int, void *ip, unsigned int nr_hits);
33 * Single profiler hit:
35 static inline void profile_hit(int type, void *ip)
38 * Speedup for the common (no profiling enabled) case:
40 if (unlikely(prof_on == type))
41 profile_hits(type, ip, 1);
45 void create_prof_cpu_mask(struct proc_dir_entry *);
47 #define create_prof_cpu_mask(x) do { (void)(x); } while (0)
55 #ifdef CONFIG_PROFILING
60 /* task is in do_exit() */
61 void profile_task_exit(struct task_struct * task);
63 /* task is dead, free task struct ? Returns 1 if
64 * the task was taken, 0 if the task should be freed.
66 int profile_handoff_task(struct task_struct * task);
69 void profile_munmap(unsigned long addr);
71 int task_handoff_register(struct notifier_block * n);
72 int task_handoff_unregister(struct notifier_block * n);
74 int profile_event_register(enum profile_type, struct notifier_block * n);
75 int profile_event_unregister(enum profile_type, struct notifier_block * n);
77 int register_timer_hook(int (*hook)(struct pt_regs *));
78 void unregister_timer_hook(int (*hook)(struct pt_regs *));
80 /* Timer based profiling hook */
81 extern int (*timer_hook)(struct pt_regs *);
87 static inline int task_handoff_register(struct notifier_block * n)
92 static inline int task_handoff_unregister(struct notifier_block * n)
97 static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
102 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
107 #define profile_task_exit(a) do { } while (0)
108 #define profile_handoff_task(a) (0)
109 #define profile_munmap(a) do { } while (0)
111 static inline int register_timer_hook(int (*hook)(struct pt_regs *))
116 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
121 #endif /* CONFIG_PROFILING */
123 #endif /* __KERNEL__ */
125 #endif /* _LINUX_PROFILE_H */