Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * @file event_buffer.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * @remark Copyright 2002 OProfile authors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * @remark Read the file COPYING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * @author John Levon <levon@movementarian.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef EVENT_BUFFER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define EVENT_BUFFER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) int alloc_event_buffer(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) void free_event_buffer(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * Add data to the event buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * The data passed is free-form, but typically consists of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * file offsets, dcookies, context information, and ESCAPE codes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) void add_event_entry(unsigned long data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* wake up the process sleeping on the event file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) void wake_up_buffer_waiter(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define INVALID_COOKIE ~0UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define NO_COOKIE 0UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) extern const struct file_operations event_buffer_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* mutex between sync_cpu_buffers() and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  * file reading code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) extern struct mutex buffer_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif /* EVENT_BUFFER_H */