1 #ifndef __PERF_MMAP_H 2 #define __PERF_MMAP_H 1 3 4 #include <internal/mmap.h> 5 #include <linux/types.h> 6 #include <linux/bitops.h> 7 #include <perf/cpumap.h> 8 #ifdef HAVE_AIO_SUPPORT 9 #include <aio.h> 10 #endif 11 #include "auxtrace.h" 12 #include "util/compress.h" 13 14 struct aiocb; 15 16 struct 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 details 26 * 27 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this 28 */ 29 struct mmap { 30 struct perf_mmap core; 31 struct auxtrace_mmap auxtrace_mmap; 32 #ifdef HAVE_AIO_SUPPORT 33 struct { 34 void **data; 35 struct aiocb *cblocks; 36 struct aiocb **aiocb; 37 int nr_cblocks; 38 } aio; 39 #endif 40 struct mmap_cpu_mask affinity_mask; 41 void *data; 42 struct perf_data_file *file; 43 struct zstd_data zstd_data; 44 }; 45 46 struct 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 52 int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu); 53 void mmap__munmap(struct mmap *map); 54 55 union perf_event *perf_mmap__read_forward(struct mmap *map); 56 57 int perf_mmap__push(struct mmap *md, void *to, 58 int push(struct mmap *map, void *to, void *buf, size_t size)); 59 60 size_t mmap__mmap_len(struct mmap *map); 61 62 void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag); 63 64 int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original, 65 struct mmap_cpu_mask *clone); 66 67 #endif /*__PERF_MMAP_H */ 68