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
18 #define KVM_PROFILING 4
20 struct proc_dir_entry;
22 struct notifier_block;
24 /* init basic kernel profiler */
25 void __init profile_init(void);
26 void profile_tick(int);
29 * Add multiple profiler hits to a given address:
31 void profile_hits(int, void *ip, unsigned int nr_hits);
34 * Single profiler hit:
36 static inline void profile_hit(int type, void *ip)
39 * Speedup for the common (no profiling enabled) case:
41 if (unlikely(prof_on == type))
42 profile_hits(type, ip, 1);
46 void create_prof_cpu_mask(struct proc_dir_entry *);
48 #define create_prof_cpu_mask(x) do { (void)(x); } while (0)
56 #ifdef CONFIG_PROFILING
61 /* task is in do_exit() */
62 void profile_task_exit(struct task_struct * task);
64 /* task is dead, free task struct ? Returns 1 if
65 * the task was taken, 0 if the task should be freed.
67 int profile_handoff_task(struct task_struct * task);
70 void profile_munmap(unsigned long addr);
72 int task_handoff_register(struct notifier_block * n);
73 int task_handoff_unregister(struct notifier_block * n);
75 int profile_event_register(enum profile_type, struct notifier_block * n);
76 int profile_event_unregister(enum profile_type, struct notifier_block * n);
78 int register_timer_hook(int (*hook)(struct pt_regs *));
79 void unregister_timer_hook(int (*hook)(struct pt_regs *));
81 /* Timer based profiling hook */
82 extern int (*timer_hook)(struct pt_regs *);
88 static inline int task_handoff_register(struct notifier_block * n)
93 static inline int task_handoff_unregister(struct notifier_block * n)
98 static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
103 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
108 #define profile_task_exit(a) do { } while (0)
109 #define profile_handoff_task(a) (0)
110 #define profile_munmap(a) do { } while (0)
112 static inline int register_timer_hook(int (*hook)(struct pt_regs *))
117 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
122 #endif /* CONFIG_PROFILING */
124 #endif /* __KERNEL__ */
126 #endif /* _LINUX_PROFILE_H */