forked from luck/tmp_suning_uos_patched
0c0a400d1d
The below patch passes samples from anonymous regions to userspace instead of just dropping them. This provides the support needed for reporting anonymous-region code samples (today: basic accumulated results; later: Java and other dynamically compiled code). As this changes the format, an upgrade to the just-released 0.9 release of the userspace tools is required. This patch is based upon an earlier one by Will Cohen <wcohen@redhat.com> Signed-off-by: John Levon <levon@movementarian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/**
|
|
* @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/semaphore.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);
|
|
|
|
/* Each escaped entry is prefixed by ESCAPE_CODE
|
|
* then one of the following codes, then the
|
|
* relevant data.
|
|
*/
|
|
#define ESCAPE_CODE ~0UL
|
|
#define CTX_SWITCH_CODE 1
|
|
#define CPU_SWITCH_CODE 2
|
|
#define COOKIE_SWITCH_CODE 3
|
|
#define KERNEL_ENTER_SWITCH_CODE 4
|
|
#define KERNEL_EXIT_SWITCH_CODE 5
|
|
#define MODULE_LOADED_CODE 6
|
|
#define CTX_TGID_CODE 7
|
|
#define TRACE_BEGIN_CODE 8
|
|
#define TRACE_END_CODE 9
|
|
|
|
#define INVALID_COOKIE ~0UL
|
|
#define NO_COOKIE 0UL
|
|
|
|
/* add data to the event buffer */
|
|
void add_event_entry(unsigned long data);
|
|
|
|
extern struct file_operations event_buffer_fops;
|
|
|
|
/* mutex between sync_cpu_buffers() and the
|
|
* file reading code.
|
|
*/
|
|
extern struct semaphore buffer_sem;
|
|
|
|
#endif /* EVENT_BUFFER_H */
|