[mirror_ubuntu-artful-kernel.git] / include / linux / profile.h

#ifndef _LINUX_PROFILE_H
#define _LINUX_PROFILE_H

#ifdef __KERNEL__

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/cpumask.h>
#include <linux/cache.h>

#include <asm/errno.h>

extern int prof_on __read_mostly;

#define CPU_PROFILING	1
#define SCHED_PROFILING	2
#define SLEEP_PROFILING	3

struct proc_dir_entry;
struct pt_regs;
struct notifier_block;

/* init basic kernel profiler */
void __init profile_init(void);
void profile_tick(int);

/*
 * Add multiple profiler hits to a given address:
 */
void profile_hits(int, void *ip, unsigned int nr_hits);

/*
 * Single profiler hit:
 */
static inline void profile_hit(int type, void *ip)
{
	/*
	 * Speedup for the common (no profiling enabled) case:
	 */
	if (unlikely(prof_on == type))
		profile_hits(type, ip, 1);
}

#ifdef CONFIG_PROC_FS
void create_prof_cpu_mask(struct proc_dir_entry *);
#else
#define create_prof_cpu_mask(x)			do { (void)(x); } while (0)
#endif

enum profile_type {
	PROFILE_TASK_EXIT,
	PROFILE_MUNMAP
};

#ifdef CONFIG_PROFILING

struct task_struct;
struct mm_struct;

/* task is in do_exit() */
void profile_task_exit(struct task_struct * task);

/* task is dead, free task struct ? Returns 1 if
 * the task was taken, 0 if the task should be freed.
 */
int profile_handoff_task(struct task_struct * task);

/* sys_munmap */
void profile_munmap(unsigned long addr);

int task_handoff_register(struct notifier_block * n);
int task_handoff_unregister(struct notifier_block * n);

int profile_event_register(enum profile_type, struct notifier_block * n);
int profile_event_unregister(enum profile_type, struct notifier_block * n);

int register_timer_hook(int (*hook)(struct pt_regs *));
void unregister_timer_hook(int (*hook)(struct pt_regs *));

/* Timer based profiling hook */
extern int (*timer_hook)(struct pt_regs *);

struct pt_regs;

#else

static inline int task_handoff_register(struct notifier_block * n)
{
	return -ENOSYS;
}

static inline int task_handoff_unregister(struct notifier_block * n)
{
	return -ENOSYS;
}

static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
{
	return -ENOSYS;
}

static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
{
	return -ENOSYS;
}

#define profile_task_exit(a) do { } while (0)
#define profile_handoff_task(a) (0)
#define profile_munmap(a) do { } while (0)

static inline int register_timer_hook(int (*hook)(struct pt_regs *))
{
	return -ENOSYS;
}

static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
{
	return;
}

#endif /* CONFIG_PROFILING */

#endif /* __KERNEL__ */

#endif /* _LINUX_PROFILE_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_PROFILE_H
	2	#define _LINUX_PROFILE_H
	3
	4	#ifdef __KERNEL__
	5
	6	#include <linux/kernel.h>
1da177e4 LT	7	#include <linux/init.h>
1da177e4 LT	8	#include <linux/cpumask.h>
ece8a684 IM	9	#include <linux/cache.h>
ece8a684 IM	10
1da177e4 LT	11	#include <asm/errno.h>
1da177e4 LT	12
ece8a684 IM	13	extern int prof_on __read_mostly;
ece8a684 IM	14
1da177e4 LT	15	#define CPU_PROFILING 1
1da177e4 LT	16	#define SCHED_PROFILING 2
ece8a684	17	#define SLEEP_PROFILING 3
1da177e4 LT	18
	19	struct proc_dir_entry;
	20	struct pt_regs;
772a0dc5	21	struct notifier_block;
1da177e4 LT	22
	23	/* init basic kernel profiler */
	24	void __init profile_init(void);
7d12e780	25	void profile_tick(int);
ece8a684 IM	26
	27	/*
	28	* Add multiple profiler hits to a given address:
	29	*/
	30	void profile_hits(int, void *ip, unsigned int nr_hits);
	31
	32	/*
	33	* Single profiler hit:
	34	*/
	35	static inline void profile_hit(int type, void *ip)
	36	{
	37	/*
	38	* Speedup for the common (no profiling enabled) case:
	39	*/
	40	if (unlikely(prof_on == type))
	41	profile_hits(type, ip, 1);
	42	}
	43
1da177e4 LT	44	#ifdef CONFIG_PROC_FS
	45	void create_prof_cpu_mask(struct proc_dir_entry *);
	46	#else
	47	#define create_prof_cpu_mask(x) do { (void)(x); } while (0)
	48	#endif
	49
	50	enum profile_type {
	51	PROFILE_TASK_EXIT,
	52	PROFILE_MUNMAP
	53	};
	54
	55	#ifdef CONFIG_PROFILING
	56
1da177e4 LT	57	struct task_struct;
	58	struct mm_struct;
	59
	60	/* task is in do_exit() */
	61	void profile_task_exit(struct task_struct * task);
	62
	63	/* task is dead, free task struct ? Returns 1 if
	64	* the task was taken, 0 if the task should be freed.
	65	*/
	66	int profile_handoff_task(struct task_struct * task);
	67
	68	/* sys_munmap */
	69	void profile_munmap(unsigned long addr);
	70
	71	int task_handoff_register(struct notifier_block * n);
	72	int task_handoff_unregister(struct notifier_block * n);
	73
	74	int profile_event_register(enum profile_type, struct notifier_block * n);
	75	int profile_event_unregister(enum profile_type, struct notifier_block * n);
	76
	77	int register_timer_hook(int (hook)(struct pt_regs ));
	78	void unregister_timer_hook(int (hook)(struct pt_regs ));
	79
	80	/* Timer based profiling hook */
	81	extern int (timer_hook)(struct pt_regs );
	82
	83	struct pt_regs;
	84
	85	#else
	86
	87	static inline int task_handoff_register(struct notifier_block * n)
	88	{
	89	return -ENOSYS;
	90	}
	91
	92	static inline int task_handoff_unregister(struct notifier_block * n)
	93	{
	94	return -ENOSYS;
	95	}
	96
	97	static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
	98	{
	99	return -ENOSYS;
	100	}
	101
	102	static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
	103	{
	104	return -ENOSYS;
	105	}
	106
	107	#define profile_task_exit(a) do { } while (0)
	108	#define profile_handoff_task(a) (0)
	109	#define profile_munmap(a) do { } while (0)
	110
	111	static inline int register_timer_hook(int (hook)(struct pt_regs ))
	112	{
	113	return -ENOSYS;
	114	}
	115
	116	static inline void unregister_timer_hook(int (hook)(struct pt_regs ))
	117	{
	118	return;
	119	}
	120
121	#endif /* CONFIG_PROFILING */
122
123	#endif /* __KERNEL__ */
124
125	#endif /* _LINUX_PROFILE_H */