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 #define CPU_PROFILING 1
12 #define SCHED_PROFILING 2
13 #define SLEEP_PROFILING 3
14 #define KVM_PROFILING 4
16 struct proc_dir_entry;
18 struct notifier_block;
20 #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
21 void create_prof_cpu_mask(struct proc_dir_entry *);
23 #define create_prof_cpu_mask(x) do { (void)(x); } while (0)
31 #ifdef CONFIG_PROFILING
33 extern int prof_on __read_mostly;
35 /* init basic kernel profiler */
36 void __init profile_init(void);
37 void profile_tick(int type);
40 * Add multiple profiler hits to a given address:
42 void profile_hits(int type, void *ip, unsigned int nr_hits);
45 * Single profiler hit:
47 static inline void profile_hit(int type, void *ip)
50 * Speedup for the common (no profiling enabled) case:
52 if (unlikely(prof_on == type))
53 profile_hits(type, ip, 1);
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 *));
85 static inline void profile_init(void)
90 static inline void profile_tick(int type)
95 static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
100 static inline void profile_hit(int type, void *ip)
105 static inline int task_handoff_register(struct notifier_block * n)
110 static inline int task_handoff_unregister(struct notifier_block * n)
115 static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
120 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
125 #define profile_task_exit(a) do { } while (0)
126 #define profile_handoff_task(a) (0)
127 #define profile_munmap(a) do { } while (0)
129 static inline int register_timer_hook(int (*hook)(struct pt_regs *))
134 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
139 #endif /* CONFIG_PROFILING */
141 #endif /* _LINUX_PROFILE_H */