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 17 struct aiocb; 18 19 struct mmap_cpu_mask { 20 unsigned long *bits; 21 size_t nbits; 22 }; 23 24 #define MMAP_CPU_MASK_BYTES(m) \ 25 (BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long)) 26 27 /** 28 * struct mmap - perf's ring buffer mmap details 29 * 30 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this 31 */ 32 struct mmap { 33 struct perf_mmap core; 34 struct auxtrace_mmap auxtrace_mmap; 35 #ifdef HAVE_AIO_SUPPORT 36 struct { 37 void **data; 38 struct aiocb *cblocks; 39 struct aiocb **aiocb; 40 int nr_cblocks; 41 } aio; 42 #endif 43 struct mmap_cpu_mask affinity_mask; 44 void *data; 45 int comp_level; 46 }; 47 48 struct mmap_params { 49 struct perf_mmap_param core; 50 int nr_cblocks, affinity, flush, comp_level; 51 struct auxtrace_mmap_params auxtrace_mp; 52 }; 53 54 int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu); 55 void mmap__munmap(struct mmap *map); 56 57 union perf_event *perf_mmap__read_forward(struct mmap *map); 58 59 int perf_mmap__push(struct mmap *md, void *to, 60 int push(struct mmap *map, void *to, void *buf, size_t size)); 61 62 size_t mmap__mmap_len(struct mmap *map); 63 64 void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag); 65 66 #endif /*__PERF_MMAP_H */ 67