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 <linux/bitops.h> 10 #include <stdbool.h> 11 #include <pthread.h> // for cpu_set_t 12 #ifdef HAVE_AIO_SUPPORT 13 #include <aio.h> 14 #endif 15 #include "auxtrace.h" 16 #include "event.h" 17 18 struct aiocb; 19 20 struct mmap_cpu_mask { 21 unsigned long *bits; 22 size_t nbits; 23 }; 24 25 #define MMAP_CPU_MASK_BYTES(m) \ 26 (BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long)) 27 28 /** 29 * struct mmap - perf's ring buffer mmap details 30 * 31 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this 32 */ 33 struct mmap { 34 struct perf_mmap core; 35 struct auxtrace_mmap auxtrace_mmap; 36 #ifdef HAVE_AIO_SUPPORT 37 struct { 38 void **data; 39 struct aiocb *cblocks; 40 struct aiocb **aiocb; 41 int nr_cblocks; 42 } aio; 43 #endif 44 struct mmap_cpu_mask affinity_mask; 45 void *data; 46 int comp_level; 47 }; 48 49 struct mmap_params { 50 struct perf_mmap_param core; 51 int nr_cblocks, affinity, flush, comp_level; 52 struct auxtrace_mmap_params auxtrace_mp; 53 }; 54 55 int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, int cpu); 56 void mmap__munmap(struct mmap *map); 57 58 union perf_event *perf_mmap__read_forward(struct mmap *map); 59 60 int perf_mmap__push(struct mmap *md, void *to, 61 int push(struct mmap *map, void *to, void *buf, size_t size)); 62 63 size_t mmap__mmap_len(struct mmap *map); 64 65 void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag); 66 67 int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original, 68 struct mmap_cpu_mask *clone); 69 70 #endif /*__PERF_MMAP_H */ 71