1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#ifndef __PERF_MMAP_H
#define __PERF_MMAP_H 1
#include <internal/mmap.h>
#include <linux/compiler.h>
#include <linux/refcount.h>
#include <linux/types.h>
#include <linux/ring_buffer.h>
#include <linux/bitops.h>
#include <perf/cpumap.h>
#include <stdbool.h>
#include <pthread.h> // for cpu_set_t
#ifdef HAVE_AIO_SUPPORT
#include <aio.h>
#endif
#include "auxtrace.h"
#include "event.h"
#include "util/compress.h"
struct aiocb;
struct mmap_cpu_mask {
unsigned long *bits;
size_t nbits;
};
#define MMAP_CPU_MASK_BYTES(m) \
(BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long))
/**
* struct mmap - perf's ring buffer mmap details
*
* @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
*/
struct mmap {
struct perf_mmap core;
struct auxtrace_mmap auxtrace_mmap;
#ifdef HAVE_AIO_SUPPORT
struct {
void **data;
struct aiocb *cblocks;
struct aiocb **aiocb;
int nr_cblocks;
} aio;
#endif
struct mmap_cpu_mask affinity_mask;
void *data;
int comp_level;
struct perf_data_file *file;
struct zstd_data zstd_data;
};
struct mmap_params {
struct perf_mmap_param core;
int nr_cblocks, affinity, flush, comp_level;
struct auxtrace_mmap_params auxtrace_mp;
};
int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu);
void mmap__munmap(struct mmap *map);
union perf_event *perf_mmap__read_forward(struct mmap *map);
int perf_mmap__push(struct mmap *md, void *to,
int push(struct mmap *map, void *to, void *buf, size_t size));
size_t mmap__mmap_len(struct mmap *map);
void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag);
int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original,
struct mmap_cpu_mask *clone);
#endif /*__PERF_MMAP_H */
|
