[linux.git] / include / linux / profile.h

#ifndef _LINUX_PROFILE_H
#define _LINUX_PROFILE_H

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

#include <asm/errno.h>

#define CPU_PROFILING	1
#define SCHED_PROFILING	2
#define SLEEP_PROFILING	3
#define KVM_PROFILING	4

struct proc_dir_entry;
struct pt_regs;
struct notifier_block;

#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
void create_prof_cpu_mask(struct proc_dir_entry *de);
#else
static inline void create_prof_cpu_mask(struct proc_dir_entry *de)
{
}
#endif

enum profile_type {
	PROFILE_TASK_EXIT,
	PROFILE_MUNMAP
};

#ifdef CONFIG_PROFILING

extern int prof_on __read_mostly;

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

/*
 * Add multiple profiler hits to a given address:
 */
void profile_hits(int type, 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);
}

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 *));

struct pt_regs;

#else

#define prof_on 0

static inline void profile_init(void)
{
	return;
}

static inline void profile_tick(int type)
{
	return;
}

static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
{
	return;
}

static inline void profile_hit(int type, void *ip)
{
	return;
}

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 /* _LINUX_PROFILE_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_PROFILE_H
	2	#define _LINUX_PROFILE_H
	3
1da177e4	4	#include <linux/kernel.h>
1da177e4 LT	5	#include <linux/init.h>
1da177e4 LT	6	#include <linux/cpumask.h>
ece8a684 IM	7	#include <linux/cache.h>
ece8a684 IM	8
1da177e4 LT	9	#include <asm/errno.h>
	10
	11	#define CPU_PROFILING 1
	12	#define SCHED_PROFILING 2
ece8a684	13	#define SLEEP_PROFILING 3
07031e14	14	#define KVM_PROFILING 4
1da177e4 LT	15
	16	struct proc_dir_entry;
	17	struct pt_regs;
772a0dc5	18	struct notifier_block;
1da177e4	19
b03f6489	20	#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
cebbd3fb	21	void create_prof_cpu_mask(struct proc_dir_entry *de);
b03f6489	22	#else
cebbd3fb AM	23	static inline void create_prof_cpu_mask(struct proc_dir_entry *de)
	24	{
	25	}
b03f6489 AB	26	#endif
	27
	28	enum profile_type {
	29	PROFILE_TASK_EXIT,
	30	PROFILE_MUNMAP
	31	};
	32
	33	#ifdef CONFIG_PROFILING
	34
	35	extern int prof_on __read_mostly;
	36
1da177e4 LT	37	/* init basic kernel profiler */
1da177e4 LT	38	void __init profile_init(void);
b03f6489	39	void profile_tick(int type);
ece8a684 IM	40
	41	/*
	42	* Add multiple profiler hits to a given address:
	43	*/
b03f6489	44	void profile_hits(int type, void *ip, unsigned int nr_hits);
ece8a684 IM	45
	46	/*
	47	* Single profiler hit:
	48	*/
	49	static inline void profile_hit(int type, void *ip)
	50	{
	51	/*
	52	* Speedup for the common (no profiling enabled) case:
	53	*/
	54	if (unlikely(prof_on == type))
	55	profile_hits(type, ip, 1);
	56	}
	57
1da177e4 LT	58	struct task_struct;
	59	struct mm_struct;
	60
	61	/* task is in do_exit() */
	62	void profile_task_exit(struct task_struct * task);
	63
	64	/* task is dead, free task struct ? Returns 1 if
	65	* the task was taken, 0 if the task should be freed.
	66	*/
	67	int profile_handoff_task(struct task_struct * task);
	68
	69	/* sys_munmap */
	70	void profile_munmap(unsigned long addr);
	71
	72	int task_handoff_register(struct notifier_block * n);
	73	int task_handoff_unregister(struct notifier_block * n);
	74
	75	int profile_event_register(enum profile_type, struct notifier_block * n);
	76	int profile_event_unregister(enum profile_type, struct notifier_block * n);
	77
	78	int register_timer_hook(int (hook)(struct pt_regs ));
	79	void unregister_timer_hook(int (hook)(struct pt_regs ));
	80
1da177e4 LT	81	struct pt_regs;
	82
	83	#else
	84
b03f6489 AB	85	#define prof_on 0
	86
	87	static inline void profile_init(void)
	88	{
	89	return;
	90	}
	91
	92	static inline void profile_tick(int type)
	93	{
	94	return;
	95	}
	96
	97	static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
	98	{
	99	return;
	100	}
	101
	102	static inline void profile_hit(int type, void *ip)
	103	{
	104	return;
	105	}
	106
1da177e4 LT	107	static inline int task_handoff_register(struct notifier_block * n)
	108	{
	109	return -ENOSYS;
	110	}
	111
	112	static inline int task_handoff_unregister(struct notifier_block * n)
	113	{
	114	return -ENOSYS;
	115	}
	116
	117	static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
	118	{
	119	return -ENOSYS;
	120	}
	121
	122	static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
	123	{
	124	return -ENOSYS;
	125	}
	126
	127	#define profile_task_exit(a) do { } while (0)
	128	#define profile_handoff_task(a) (0)
	129	#define profile_munmap(a) do { } while (0)
	130
	131	static inline int register_timer_hook(int (hook)(struct pt_regs ))
	132	{
	133	return -ENOSYS;
	134	}
	135
	136	static inline void unregister_timer_hook(int (hook)(struct pt_regs ))
	137	{
	138	return;
	139	}
	140
	141	#endif /* CONFIG_PROFILING */
	142
1da177e4	143	#endif /* _LINUX_PROFILE_H */