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