1 #ifndef _LINUX_PROFILE_H
2 #define _LINUX_PROFILE_H
4 #include <linux/kernel.h>
5 #include <linux/init.h>
6 #include <linux/cpumask.h>
7 #include <linux/cache.h>
11 extern int prof_on __read_mostly;
13 #define CPU_PROFILING 1
14 #define SCHED_PROFILING 2
15 #define SLEEP_PROFILING 3
16 #define KVM_PROFILING 4
18 struct proc_dir_entry;
20 struct notifier_block;
22 /* init basic kernel profiler */
23 void __init profile_init(void);
24 void profile_tick(int);
27 * Add multiple profiler hits to a given address:
29 void profile_hits(int, void *ip, unsigned int nr_hits);
32 * Single profiler hit:
34 static inline void profile_hit(int type, void *ip)
37 * Speedup for the common (no profiling enabled) case:
39 if (unlikely(prof_on == type))
40 profile_hits(type, ip, 1);
44 void create_prof_cpu_mask(struct proc_dir_entry *);
46 #define create_prof_cpu_mask(x) do { (void)(x); } while (0)
54 #ifdef CONFIG_PROFILING
59 /* task is in do_exit() */
60 void profile_task_exit(struct task_struct * task);
62 /* task is dead, free task struct ? Returns 1 if
63 * the task was taken, 0 if the task should be freed.
65 int profile_handoff_task(struct task_struct * task);
68 void profile_munmap(unsigned long addr);
70 int task_handoff_register(struct notifier_block * n);
71 int task_handoff_unregister(struct notifier_block * n);
73 int profile_event_register(enum profile_type, struct notifier_block * n);
74 int profile_event_unregister(enum profile_type, struct notifier_block * n);
76 int register_timer_hook(int (*hook)(struct pt_regs *));
77 void unregister_timer_hook(int (*hook)(struct pt_regs *));
83 static inline int task_handoff_register(struct notifier_block * n)
88 static inline int task_handoff_unregister(struct notifier_block * n)
93 static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
98 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
103 #define profile_task_exit(a) do { } while (0)
104 #define profile_handoff_task(a) (0)
105 #define profile_munmap(a) do { } while (0)
107 static inline int register_timer_hook(int (*hook)(struct pt_regs *))
112 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
117 #endif /* CONFIG_PROFILING */
119 #endif /* _LINUX_PROFILE_H */