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 <perf/cpumap.h> 11 #include <stdbool.h> 12 #include <pthread.h> // for cpu_set_t 13 #ifdef HAVE_AIO_SUPPORT 14 #include <aio.h> 15 #endif 16 #include "auxtrace.h" 17 #include "event.h" 18 #include "util/compress.h" 19 20 struct aiocb; 21 22 struct mmap_cpu_mask { 23 unsigned long *bits; 24 size_t nbits; 25 }; 26 27 #define MMAP_CPU_MASK_BYTES(m) \ 28 (BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long)) 29 30 /** 31 * struct mmap - perf's ring buffer mmap details 32 * 33 * @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this 34 */ 35 struct mmap { 36 struct perf_mmap core; 37 struct auxtrace_mmap auxtrace_mmap; 38 #ifdef HAVE_AIO_SUPPORT 39 struct { 40 void **data; 41 struct aiocb *cblocks; 42 struct aiocb **aiocb; 43 int nr_cblocks; 44 } aio; 45 #endif 46 struct mmap_cpu_mask affinity_mask; 47 void *data; 48 int comp_level; 49 struct perf_data_file *file; 50 struct zstd_data zstd_data; 51 }; 52 53 struct mmap_params { 54 struct perf_mmap_param core; 55 int nr_cblocks, affinity, flush, comp_level; 56 struct auxtrace_mmap_params auxtrace_mp; 57 }; 58 59 int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu); 60 void mmap__munmap(struct mmap *map); 61 62 union perf_event *perf_mmap__read_forward(struct mmap *map); 63 64 int perf_mmap__push(struct mmap *md, void *to, 65 int push(struct mmap *map, void *to, void *buf, size_t size)); 66 67 size_t mmap__mmap_len(struct mmap *map); 68 69 void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag); 70 71 int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original, 72 struct mmap_cpu_mask *clone); 73 74 #endif /*__PERF_MMAP_H */ 75