2 #define __PERF_MMAP_H 1
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>
10 #include <pthread.h> // for cpu_set_t
11 #ifdef HAVE_AIO_SUPPORT
19 * struct mmap - perf's ring buffer mmap details
21 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
24 struct perf_mmap core;
25 struct auxtrace_mmap auxtrace_mmap;
26 char event_copy[PERF_SAMPLE_MAX_SIZE] __aligned(8);
27 #ifdef HAVE_AIO_SUPPORT
30 struct aiocb *cblocks;
35 cpu_set_t affinity_mask;
42 int prot, mask, nr_cblocks, affinity, flush, comp_level;
43 struct auxtrace_mmap_params auxtrace_mp;
46 int perf_mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu);
47 void perf_mmap__munmap(struct mmap *map);
49 void perf_mmap__get(struct mmap *map);
50 void perf_mmap__put(struct mmap *map);
52 void perf_mmap__consume(struct mmap *map);
54 static inline u64 perf_mmap__read_head(struct mmap *mm)
56 return ring_buffer_read_head(mm->core.base);
59 static inline void perf_mmap__write_tail(struct mmap *md, u64 tail)
61 ring_buffer_write_tail(md->core.base, tail);
64 union perf_event *perf_mmap__read_forward(struct mmap *map);
66 union perf_event *perf_mmap__read_event(struct mmap *map);
68 int perf_mmap__push(struct mmap *md, void *to,
69 int push(struct mmap *map, void *to, void *buf, size_t size));
71 size_t perf_mmap__mmap_len(struct mmap *map);
73 int perf_mmap__read_init(struct mmap *md);
74 void perf_mmap__read_done(struct mmap *map);
75 #endif /*__PERF_MMAP_H */