[linux-2.6-block.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 <asm/errno.h>

#define CPU_PROFILING	1
#define SCHED_PROFILING	2

struct proc_dir_entry;
struct pt_regs;
struct notifier_block;

/* init basic kernel profiler */
void __init profile_init(void);
void profile_tick(int);
void profile_hit(int, void *);
#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>
	8	#include <linux/cpumask.h>
	9	#include <asm/errno.h>
	10
	11	#define CPU_PROFILING 1
	12	#define SCHED_PROFILING 2
	13
	14	struct proc_dir_entry;
	15	struct pt_regs;
772a0dc5	16	struct notifier_block;
1da177e4 LT	17
	18	/* init basic kernel profiler */
	19	void __init profile_init(void);
7d12e780	20	void profile_tick(int);
1da177e4 LT	21	void profile_hit(int, void *);
	22	#ifdef CONFIG_PROC_FS
	23	void create_prof_cpu_mask(struct proc_dir_entry *);
	24	#else
	25	#define create_prof_cpu_mask(x) do { (void)(x); } while (0)
	26	#endif
	27
	28	enum profile_type {
	29	PROFILE_TASK_EXIT,
	30	PROFILE_MUNMAP
	31	};
	32
	33	#ifdef CONFIG_PROFILING
	34
1da177e4 LT	35	struct task_struct;
	36	struct mm_struct;
	37
	38	/* task is in do_exit() */
	39	void profile_task_exit(struct task_struct * task);
	40
	41	/* task is dead, free task struct ? Returns 1 if
	42	* the task was taken, 0 if the task should be freed.
	43	*/
	44	int profile_handoff_task(struct task_struct * task);
	45
	46	/* sys_munmap */
	47	void profile_munmap(unsigned long addr);
	48
	49	int task_handoff_register(struct notifier_block * n);
	50	int task_handoff_unregister(struct notifier_block * n);
	51
	52	int profile_event_register(enum profile_type, struct notifier_block * n);
	53	int profile_event_unregister(enum profile_type, struct notifier_block * n);
	54
	55	int register_timer_hook(int (hook)(struct pt_regs ));
	56	void unregister_timer_hook(int (hook)(struct pt_regs ));
	57
	58	/* Timer based profiling hook */
	59	extern int (timer_hook)(struct pt_regs );
	60
	61	struct pt_regs;
	62
	63	#else
	64
	65	static inline int task_handoff_register(struct notifier_block * n)
	66	{
	67	return -ENOSYS;
	68	}
	69
	70	static inline int task_handoff_unregister(struct notifier_block * n)
	71	{
	72	return -ENOSYS;
	73	}
	74
	75	static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
	76	{
	77	return -ENOSYS;
	78	}
	79
	80	static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
	81	{
	82	return -ENOSYS;
	83	}
	84
	85	#define profile_task_exit(a) do { } while (0)
	86	#define profile_handoff_task(a) (0)
	87	#define profile_munmap(a) do { } while (0)
	88
	89	static inline int register_timer_hook(int (hook)(struct pt_regs ))
	90	{
	91	return -ENOSYS;
	92	}
	93
	94	static inline void unregister_timer_hook(int (hook)(struct pt_regs ))
	95	{
	96	return;
	97	}
	98
99	#endif /* CONFIG_PROFILING */
100
101	#endif /* __KERNEL__ */
102
103	#endif /* _LINUX_PROFILE_H */