[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
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	#ifndef _LINUX_PROFILE_H
	3	#define _LINUX_PROFILE_H
	4
	5	#include <linux/kernel.h>
	6	#include <linux/init.h>
	7	#include <linux/cache.h>
	8
	9	#include <asm/errno.h>
	10
	11	#define CPU_PROFILING 1
	12	#define SCHED_PROFILING 2
	13	#define KVM_PROFILING 4
	14
	15	struct proc_dir_entry;
	16	struct notifier_block;
	17
	18	#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
	19	int create_proc_profile(void);
	20	#else
	21	static inline int create_proc_profile(void)
	22	{
	23	return 0;
	24	}
	25	#endif
	26
	27	#ifdef CONFIG_PROFILING
	28
	29	extern int prof_on __read_mostly;
	30
	31	/* init basic kernel profiler */
	32	int profile_init(void);
	33	int profile_setup(char *str);
	34	void profile_tick(int type);
	35	int setup_profiling_timer(unsigned int multiplier);
	36
	37	/*
	38	* Add multiple profiler hits to a given address:
	39	*/
	40	void profile_hits(int type, void *ip, unsigned int nr_hits);
	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
	54	struct task_struct;
	55	struct mm_struct;
	56
	57	#else
	58
	59	#define prof_on 0
	60
	61	static inline int profile_init(void)
	62	{
	63	return 0;
	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
	81
	82	#endif /* CONFIG_PROFILING */
	83
	84	#endif /* _LINUX_PROFILE_H */