1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __PERF_HEADER_H 3#define __PERF_HEADER_H 4 5#include <linux/stddef.h> 6#include <linux/perf_event.h> 7#include <sys/types.h> 8#include <stdio.h> // FILE 9#include <stdbool.h> 10#include <linux/bitmap.h> 11#include <linux/types.h> 12#include "env.h" 13#include "pmu.h" 14 15enum { 16 HEADER_RESERVED = 0, /* always cleared */ 17 HEADER_FIRST_FEATURE = 1, 18 HEADER_TRACING_DATA = 1, 19 HEADER_BUILD_ID, 20 21 HEADER_HOSTNAME, 22 HEADER_OSRELEASE, 23 HEADER_VERSION, 24 HEADER_ARCH, 25 HEADER_NRCPUS, 26 HEADER_CPUDESC, 27 HEADER_CPUID, 28 HEADER_TOTAL_MEM, 29 HEADER_CMDLINE, 30 HEADER_EVENT_DESC, 31 HEADER_CPU_TOPOLOGY, 32 HEADER_NUMA_TOPOLOGY, 33 HEADER_BRANCH_STACK, 34 HEADER_PMU_MAPPINGS, 35 HEADER_GROUP_DESC, 36 HEADER_AUXTRACE, 37 HEADER_STAT, 38 HEADER_CACHE, 39 HEADER_SAMPLE_TIME, 40 HEADER_MEM_TOPOLOGY, 41 HEADER_CLOCKID, 42 HEADER_DIR_FORMAT, 43 HEADER_BPF_PROG_INFO, 44 HEADER_BPF_BTF, 45 HEADER_COMPRESSED, 46 HEADER_CPU_PMU_CAPS, 47 HEADER_CLOCK_DATA, 48 HEADER_LAST_FEATURE, 49 HEADER_FEAT_BITS = 256, 50}; 51 52enum perf_header_version { 53 PERF_HEADER_VERSION_1, 54 PERF_HEADER_VERSION_2, 55}; 56 57struct perf_file_section { 58 u64 offset; 59 u64 size; 60}; 61 62struct perf_file_header { 63 u64 magic; 64 u64 size; 65 u64 attr_size; 66 struct perf_file_section attrs; 67 struct perf_file_section data; 68 /* event_types is ignored */ 69 struct perf_file_section event_types; 70 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 71}; 72 73struct perf_pipe_file_header { 74 u64 magic; 75 u64 size; 76}; 77 78struct perf_header; 79 80int perf_file_header__read(struct perf_file_header *header, 81 struct perf_header *ph, int fd); 82 83struct perf_header { 84 enum perf_header_version version; 85 bool needs_swap; 86 u64 data_offset; 87 u64 data_size; 88 u64 feat_offset; 89 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 90 struct perf_env env; 91}; 92 93struct feat_fd { 94 struct perf_header *ph; 95 int fd; 96 void *buf; /* Either buf != NULL or fd >= 0 */ 97 ssize_t offset; 98 size_t size; 99 struct evsel *events; 100}; 101 102struct perf_header_feature_ops { 103 int (*write)(struct feat_fd *ff, struct evlist *evlist); 104 void (*print)(struct feat_fd *ff, FILE *fp); 105 int (*process)(struct feat_fd *ff, void *data); 106 const char *name; 107 bool full_only; 108 bool synthesize; 109}; 110 111struct evlist; 112struct perf_session; 113struct perf_tool; 114union perf_event; 115 116int perf_session__read_header(struct perf_session *session); 117int perf_session__write_header(struct perf_session *session, 118 struct evlist *evlist, 119 int fd, bool at_exit); 120int perf_header__write_pipe(int fd); 121 122void perf_header__set_feat(struct perf_header *header, int feat); 123void perf_header__clear_feat(struct perf_header *header, int feat); 124bool perf_header__has_feat(const struct perf_header *header, int feat); 125 126int perf_header__set_cmdline(int argc, const char **argv); 127 128int perf_header__process_sections(struct perf_header *header, int fd, 129 void *data, 130 int (*process)(struct perf_file_section *section, 131 struct perf_header *ph, 132 int feat, int fd, void *data)); 133 134int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 135 136int perf_event__process_feature(struct perf_session *session, 137 union perf_event *event); 138int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 139 struct evlist **pevlist); 140int perf_event__process_event_update(struct perf_tool *tool, 141 union perf_event *event, 142 struct evlist **pevlist); 143size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 144int perf_event__process_tracing_data(struct perf_session *session, 145 union perf_event *event); 146int perf_event__process_build_id(struct perf_session *session, 147 union perf_event *event); 148bool is_perf_magic(u64 magic); 149 150#define NAME_ALIGN 64 151 152struct feat_fd; 153 154int do_write(struct feat_fd *fd, const void *buf, size_t size); 155 156int write_padded(struct feat_fd *fd, const void *bf, 157 size_t count, size_t count_aligned); 158 159/* 160 * arch specific callback 161 */ 162int get_cpuid(char *buffer, size_t sz); 163 164char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 165int strcmp_cpuid_str(const char *s1, const char *s2); 166#endif /* __PERF_HEADER_H */ 167