[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / oprofile / event_buffer.h

/**
 * @file event_buffer.h
 *
 * @remark Copyright 2002 OProfile authors
 * @remark Read the file COPYING
 *
 * @author John Levon <levon@movementarian.org>
 */

#ifndef EVENT_BUFFER_H
#define EVENT_BUFFER_H

#include <linux/types.h>
#include <linux/mutex.h>

int alloc_event_buffer(void);

void free_event_buffer(void);

/**
 * Add data to the event buffer.
 * The data passed is free-form, but typically consists of
 * file offsets, dcookies, context information, and ESCAPE codes.
 */
void add_event_entry(unsigned long data);

/* wake up the process sleeping on the event file */
void wake_up_buffer_waiter(void);

#define INVALID_COOKIE ~0UL
#define NO_COOKIE 0UL

extern const struct file_operations event_buffer_fops;

/* mutex between sync_cpu_buffers() and the
 * file reading code.
 */
extern struct mutex buffer_mutex;

#endif /* EVENT_BUFFER_H */
Commit	Line	Data
1da177e4 LT	1	/**
	2	* @file event_buffer.h
	3	*
	4	* @remark Copyright 2002 OProfile authors
	5	* @remark Read the file COPYING
	6	*
	7	* @author John Levon <levon@movementarian.org>
	8	*/
	9
	10	#ifndef EVENT_BUFFER_H
	11	#define EVENT_BUFFER_H
	12
6a18037d	13	#include <linux/types.h>
b76a06e0	14	#include <linux/mutex.h>
6a18037d	15
1da177e4 LT	16	int alloc_event_buffer(void);
	17
	18	void free_event_buffer(void);
6a18037d	19
a5598ca0 CL	20	/**
	21	* Add data to the event buffer.
	22	* The data passed is free-form, but typically consists of
	23	* file offsets, dcookies, context information, and ESCAPE codes.
	24	*/
	25	void add_event_entry(unsigned long data);
	26
1da177e4 LT	27	/* wake up the process sleeping on the event file */
1da177e4 LT	28	void wake_up_buffer_waiter(void);
1474855d	29
0c0a400d JL	30	#define INVALID_COOKIE ~0UL
	31	#define NO_COOKIE 0UL
	32
d54b1fdb	33	extern const struct file_operations event_buffer_fops;
6a18037d	34
1da177e4 LT	35	/* mutex between sync_cpu_buffers() and the
	36	* file reading code.
	37	*/
59cc185a	38	extern struct mutex buffer_mutex;
6a18037d	39
1da177e4	40	#endif /* EVENT_BUFFER_H */