LXR linux/tools/perf/util/mmap.h

   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 <stdbool.h>
  10#include <pthread.h> // for cpu_set_t
  11#ifdef HAVE_AIO_SUPPORT
  12#include <aio.h>
  13#endif
  14#include "auxtrace.h"
  15#include "event.h"
  16
  17struct aiocb;
  18/**
  19 * struct mmap - perf's ring buffer mmap details
  20 *
  21 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
  22 */
  23struct mmap {
  24        struct perf_mmap        core;
  25        struct auxtrace_mmap auxtrace_mmap;
  26#ifdef HAVE_AIO_SUPPORT
  27        struct {
  28                void             **data;
  29                struct aiocb     *cblocks;
  30                struct aiocb     **aiocb;
  31                int              nr_cblocks;
  32        } aio;
  33#endif
  34        cpu_set_t       affinity_mask;
  35        void            *data;
  36        int             comp_level;
  37};
  38
  39struct mmap_params {
  40        struct perf_mmap_param core;
  41        int nr_cblocks, affinity, flush, comp_level;
  42        struct auxtrace_mmap_params auxtrace_mp;
  43};
  44
  45int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu);
  46void mmap__munmap(struct mmap *map);
  47
  48union perf_event *perf_mmap__read_forward(struct mmap *map);
  49
  50int perf_mmap__push(struct mmap *md, void *to,
  51                    int push(struct mmap *map, void *to, void *buf, size_t size));
  52
  53size_t mmap__mmap_len(struct mmap *map);
  54
  55#endif /*__PERF_MMAP_H */
  56