[mirror_ubuntu-bionic-kernel.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>

extern int prof_on __read_mostly;

#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;

/* 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 *));

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 /* _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>
1da177e4 LT	10
ece8a684 IM	11	extern int prof_on __read_mostly;
ece8a684 IM	12
1da177e4 LT	13	#define CPU_PROFILING 1
1da177e4 LT	14	#define SCHED_PROFILING 2
ece8a684	15	#define SLEEP_PROFILING 3
07031e14	16	#define KVM_PROFILING 4
1da177e4 LT	17
	18	struct proc_dir_entry;
	19	struct pt_regs;
772a0dc5	20	struct notifier_block;
1da177e4 LT	21
	22	/* init basic kernel profiler */
	23	void __init profile_init(void);
7d12e780	24	void profile_tick(int);
ece8a684 IM	25
	26	/*
	27	* Add multiple profiler hits to a given address:
	28	*/
	29	void profile_hits(int, void *ip, unsigned int nr_hits);
	30
	31	/*
	32	* Single profiler hit:
	33	*/
	34	static inline void profile_hit(int type, void *ip)
	35	{
	36	/*
	37	* Speedup for the common (no profiling enabled) case:
	38	*/
	39	if (unlikely(prof_on == type))
	40	profile_hits(type, ip, 1);
	41	}
	42
1da177e4 LT	43	#ifdef CONFIG_PROC_FS
	44	void create_prof_cpu_mask(struct proc_dir_entry *);
	45	#else
	46	#define create_prof_cpu_mask(x) do { (void)(x); } while (0)
	47	#endif
	48
	49	enum profile_type {
	50	PROFILE_TASK_EXIT,
	51	PROFILE_MUNMAP
	52	};
	53
	54	#ifdef CONFIG_PROFILING
	55
1da177e4 LT	56	struct task_struct;
	57	struct mm_struct;
	58
	59	/* task is in do_exit() */
	60	void profile_task_exit(struct task_struct * task);
	61
	62	/* task is dead, free task struct ? Returns 1 if
	63	* the task was taken, 0 if the task should be freed.
	64	*/
	65	int profile_handoff_task(struct task_struct * task);
	66
	67	/* sys_munmap */
	68	void profile_munmap(unsigned long addr);
	69
	70	int task_handoff_register(struct notifier_block * n);
	71	int task_handoff_unregister(struct notifier_block * n);
	72
	73	int profile_event_register(enum profile_type, struct notifier_block * n);
	74	int profile_event_unregister(enum profile_type, struct notifier_block * n);
	75
	76	int register_timer_hook(int (hook)(struct pt_regs ));
	77	void unregister_timer_hook(int (hook)(struct pt_regs ));
	78
1da177e4 LT	79	struct pt_regs;
	80
	81	#else
	82
	83	static inline int task_handoff_register(struct notifier_block * n)
	84	{
	85	return -ENOSYS;
	86	}
	87
	88	static inline int task_handoff_unregister(struct notifier_block * n)
	89	{
	90	return -ENOSYS;
	91	}
	92
	93	static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
	94	{
	95	return -ENOSYS;
	96	}
	97
	98	static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
	99	{
	100	return -ENOSYS;
	101	}
	102
	103	#define profile_task_exit(a) do { } while (0)
	104	#define profile_handoff_task(a) (0)
	105	#define profile_munmap(a) do { } while (0)
	106
	107	static inline int register_timer_hook(int (hook)(struct pt_regs ))
	108	{
	109	return -ENOSYS;
	110	}
	111
	112	static inline void unregister_timer_hook(int (hook)(struct pt_regs ))
	113	{
	114	return;
	115	}
	116
	117	#endif /* CONFIG_PROFILING */
	118
1da177e4	119	#endif /* _LINUX_PROFILE_H */