[net-next-2.6.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 */
int profile_init(void);
int profile_setup(char *str);
int create_proc_profile(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 int profile_init(void)
{
	return 0;
}

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	37	/* init basic kernel profiler */
22b8ce94 DH	38	int profile_init(void);
	39	int profile_setup(char *str);
	40	int create_proc_profile(void);
b03f6489	41	void profile_tick(int type);
ece8a684 IM	42
	43	/*
	44	* Add multiple profiler hits to a given address:
	45	*/
b03f6489	46	void profile_hits(int type, void *ip, unsigned int nr_hits);
ece8a684 IM	47
	48	/*
	49	* Single profiler hit:
	50	*/
	51	static inline void profile_hit(int type, void *ip)
	52	{
	53	/*
	54	* Speedup for the common (no profiling enabled) case:
	55	*/
	56	if (unlikely(prof_on == type))
	57	profile_hits(type, ip, 1);
	58	}
	59
1da177e4 LT	60	struct task_struct;
	61	struct mm_struct;
	62
	63	/* task is in do_exit() */
	64	void profile_task_exit(struct task_struct * task);
	65
	66	/* task is dead, free task struct ? Returns 1 if
	67	* the task was taken, 0 if the task should be freed.
	68	*/
	69	int profile_handoff_task(struct task_struct * task);
	70
	71	/* sys_munmap */
	72	void profile_munmap(unsigned long addr);
	73
	74	int task_handoff_register(struct notifier_block * n);
	75	int task_handoff_unregister(struct notifier_block * n);
	76
	77	int profile_event_register(enum profile_type, struct notifier_block * n);
	78	int profile_event_unregister(enum profile_type, struct notifier_block * n);
	79
	80	int register_timer_hook(int (hook)(struct pt_regs ));
	81	void unregister_timer_hook(int (hook)(struct pt_regs ));
	82
1da177e4 LT	83	struct pt_regs;
	84
	85	#else
	86
b03f6489 AB	87	#define prof_on 0
b03f6489 AB	88
22b8ce94	89	static inline int profile_init(void)
b03f6489	90	{
22b8ce94	91	return 0;
b03f6489 AB	92	}
	93
	94	static inline void profile_tick(int type)
	95	{
	96	return;
	97	}
	98
	99	static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
	100	{
	101	return;
	102	}
	103
	104	static inline void profile_hit(int type, void *ip)
	105	{
	106	return;
	107	}
	108
1da177e4 LT	109	static inline int task_handoff_register(struct notifier_block * n)
	110	{
	111	return -ENOSYS;
	112	}
	113
	114	static inline int task_handoff_unregister(struct notifier_block * n)
	115	{
	116	return -ENOSYS;
	117	}
	118
	119	static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
	120	{
	121	return -ENOSYS;
	122	}
	123
	124	static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
	125	{
	126	return -ENOSYS;
	127	}
	128
	129	#define profile_task_exit(a) do { } while (0)
	130	#define profile_handoff_task(a) (0)
	131	#define profile_munmap(a) do { } while (0)
	132
	133	static inline int register_timer_hook(int (hook)(struct pt_regs ))
	134	{
	135	return -ENOSYS;
	136	}
	137
	138	static inline void unregister_timer_hook(int (hook)(struct pt_regs ))
	139	{
	140	return;
	141	}
	142
	143	#endif /* CONFIG_PROFILING */
	144
1da177e4	145	#endif /* _LINUX_PROFILE_H */