| /** |
| * @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 */ |