1#ifndef _ASM_INTEL_DS_H
2#define _ASM_INTEL_DS_H
3
4#include <linux/percpu-defs.h>
5
6#define BTS_BUFFER_SIZE (PAGE_SIZE << 4)
7#define PEBS_BUFFER_SIZE (PAGE_SIZE << 4)
8
9/* The maximal number of PEBS events: */
10#define MAX_PEBS_EVENTS_FMT4 8
11#define MAX_PEBS_EVENTS 32
12#define MAX_FIXED_PEBS_EVENTS 16
13
14/*
15 * A debug store configuration.
16 *
17 * We only support architectures that use 64bit fields.
18 */
19struct debug_store {
20 u64 bts_buffer_base;
21 u64 bts_index;
22 u64 bts_absolute_maximum;
23 u64 bts_interrupt_threshold;
24 u64 pebs_buffer_base;
25 u64 pebs_index;
26 u64 pebs_absolute_maximum;
27 u64 pebs_interrupt_threshold;
28 u64 pebs_event_reset[MAX_PEBS_EVENTS + MAX_FIXED_PEBS_EVENTS];
29} __aligned(PAGE_SIZE);
30
31DECLARE_PER_CPU_PAGE_ALIGNED(struct debug_store, cpu_debug_store);
32
33struct debug_store_buffers {
34 char bts_buffer[BTS_BUFFER_SIZE];
35 char pebs_buffer[PEBS_BUFFER_SIZE];
36};
37
38#endif
39

source code of linux/arch/x86/include/asm/intel_ds.h