blob: 84bf324c577129c04a771c985e050eca9136e978 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/**
* @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 <asm/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 */
|
