68 lines · c
1#ifndef __PERF_MMAP_H2#define __PERF_MMAP_H 13 4#include <internal/mmap.h>5#include <linux/types.h>6#include <linux/bitops.h>7#include <perf/cpumap.h>8#ifdef HAVE_AIO_SUPPORT9#include <aio.h>10#endif11#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 details26 *27 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this28 */29struct mmap {30 struct perf_mmap core;31 struct auxtrace_mmap auxtrace_mmap;32#ifdef HAVE_AIO_SUPPORT33 struct {34 void **data;35 struct aiocb *cblocks;36 struct aiocb **aiocb;37 int nr_cblocks;38 } aio;39#endif40 struct mmap_cpu_mask affinity_mask;41 void *data;42 struct perf_data_file *file;43 struct zstd_data zstd_data;44};45 46struct mmap_params {47 struct perf_mmap_param core;48 int nr_cblocks, affinity, flush, comp_level;49 struct auxtrace_mmap_params auxtrace_mp;50};51 52int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu);53void mmap__munmap(struct mmap *map);54 55union perf_event *perf_mmap__read_forward(struct mmap *map);56 57int perf_mmap__push(struct mmap *md, void *to,58 int push(struct mmap *map, void *to, void *buf, size_t size));59 60size_t mmap__mmap_len(struct mmap *map);61 62void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag);63 64int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original,65 struct mmap_cpu_mask *clone);66 67#endif /*__PERF_MMAP_H */68