[deliverable/linux.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 <asm/mutex.h>
 
int alloc_event_buffer(void);

void free_event_buffer(void);
 
/* 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
	13	#include <linux/types.h>
59cc185a	14	#include <asm/mutex.h>
1da177e4 LT	15
	16	int alloc_event_buffer(void);
	17
	18	void free_event_buffer(void);
	19
	20	/* wake up the process sleeping on the event file */
	21	void wake_up_buffer_waiter(void);
1474855d	22
0c0a400d JL	23	#define INVALID_COOKIE ~0UL
	24	#define NO_COOKIE 0UL
	25
d54b1fdb	26	extern const struct file_operations event_buffer_fops;
1da177e4 LT	27
	28	/* mutex between sync_cpu_buffers() and the
	29	* file reading code.
	30	*/
59cc185a	31	extern struct mutex buffer_mutex;
1da177e4 LT	32
1da177e4 LT	33	#endif /* EVENT_BUFFER_H */