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