[linux-2.6-block.git] / include / linux / profile.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_PROFILE_H
#define _LINUX_PROFILE_H

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

#include <asm/errno.h>

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

struct proc_dir_entry;
struct notifier_block;

#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
int create_proc_profile(void);
#else
static inline int create_proc_profile(void)
{
	return 0;
}
#endif

#ifdef CONFIG_PROFILING

extern int prof_on __read_mostly;

/* init basic kernel profiler */
int profile_init(void);
int profile_setup(char *str);
void profile_tick(int type);
int setup_profiling_timer(unsigned int multiplier);

/*
 * 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;

#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;
}


#endif /* CONFIG_PROFILING */

#endif /* _LINUX_PROFILE_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _LINUX_PROFILE_H
	3	#define _LINUX_PROFILE_H
	4
1da177e4	5	#include <linux/kernel.h>
1da177e4	6	#include <linux/init.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
07031e14	13	#define KVM_PROFILING 4
1da177e4 LT	14
1da177e4 LT	15	struct proc_dir_entry;
772a0dc5	16	struct notifier_block;
1da177e4	17
b03f6489	18	#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
66f50ee3	19	int create_proc_profile(void);
b03f6489	20	#else
66f50ee3 PM	21	static inline int create_proc_profile(void)
	22	{
	23	return 0;
	24	}
b03f6489 AB	25	#endif
b03f6489 AB	26
b03f6489 AB	27	#ifdef CONFIG_PROFILING
	28
	29	extern int prof_on __read_mostly;
	30
1da177e4	31	/* init basic kernel profiler */
22b8ce94 DH	32	int profile_init(void);
22b8ce94 DH	33	int profile_setup(char *str);
b03f6489	34	void profile_tick(int type);
d3091298	35	int setup_profiling_timer(unsigned int multiplier);
ece8a684 IM	36
	37	/*
	38	* Add multiple profiler hits to a given address:
	39	*/
b03f6489	40	void profile_hits(int type, void *ip, unsigned int nr_hits);
ece8a684 IM	41
	42	/*
	43	* Single profiler hit:
	44	*/
	45	static inline void profile_hit(int type, void *ip)
	46	{
	47	/*
	48	* Speedup for the common (no profiling enabled) case:
	49	*/
	50	if (unlikely(prof_on == type))
	51	profile_hits(type, ip, 1);
	52	}
	53
1da177e4 LT	54	struct task_struct;
	55	struct mm_struct;
	56
1da177e4 LT	57	#else
1da177e4 LT	58
b03f6489 AB	59	#define prof_on 0
b03f6489 AB	60
22b8ce94	61	static inline int profile_init(void)
b03f6489	62	{
22b8ce94	63	return 0;
b03f6489 AB	64	}
	65
	66	static inline void profile_tick(int type)
	67	{
	68	return;
	69	}
	70
	71	static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
	72	{
	73	return;
	74	}
	75
	76	static inline void profile_hit(int type, void *ip)
	77	{
	78	return;
	79	}
	80
1da177e4	81
1da177e4 LT	82	#endif /* CONFIG_PROFILING */
1da177e4 LT	83
1da177e4	84	#endif /* _LINUX_PROFILE_H */