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 <stdbool.h> 9 #include <linux/bitmap.h> 10 #include <linux/types.h> 11 #include "event.h" 12 #include "env.h" 13 #include "pmu.h" 14 15 enum { 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_LAST_FEATURE, 46 HEADER_FEAT_BITS = 256, 47 }; 48 49 enum perf_header_version { 50 PERF_HEADER_VERSION_1, 51 PERF_HEADER_VERSION_2, 52 }; 53 54 enum perf_dir_version { 55 PERF_DIR_VERSION = 1, 56 }; 57 58 struct perf_file_section { 59 u64 offset; 60 u64 size; 61 }; 62 63 struct perf_file_header { 64 u64 magic; 65 u64 size; 66 u64 attr_size; 67 struct perf_file_section attrs; 68 struct perf_file_section data; 69 /* event_types is ignored */ 70 struct perf_file_section event_types; 71 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 72 }; 73 74 struct perf_pipe_file_header { 75 u64 magic; 76 u64 size; 77 }; 78 79 struct perf_header; 80 81 int perf_file_header__read(struct perf_file_header *header, 82 struct perf_header *ph, int fd); 83 84 struct perf_header { 85 enum perf_header_version version; 86 bool needs_swap; 87 u64 data_offset; 88 u64 data_size; 89 u64 feat_offset; 90 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 91 struct perf_env env; 92 }; 93 94 struct perf_evlist; 95 struct perf_session; 96 97 int perf_session__read_header(struct perf_session *session); 98 int perf_session__write_header(struct perf_session *session, 99 struct perf_evlist *evlist, 100 int fd, bool at_exit); 101 int perf_header__write_pipe(int fd); 102 103 void perf_header__set_feat(struct perf_header *header, int feat); 104 void perf_header__clear_feat(struct perf_header *header, int feat); 105 bool perf_header__has_feat(const struct perf_header *header, int feat); 106 107 int perf_header__set_cmdline(int argc, const char **argv); 108 109 int perf_header__process_sections(struct perf_header *header, int fd, 110 void *data, 111 int (*process)(struct perf_file_section *section, 112 struct perf_header *ph, 113 int feat, int fd, void *data)); 114 115 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 116 117 int perf_event__synthesize_features(struct perf_tool *tool, 118 struct perf_session *session, 119 struct perf_evlist *evlist, 120 perf_event__handler_t process); 121 122 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 123 struct perf_evlist *evsel_list, 124 perf_event__handler_t process, 125 bool is_pipe); 126 127 int perf_event__process_feature(struct perf_session *session, 128 union perf_event *event); 129 130 int perf_event__synthesize_attr(struct perf_tool *tool, 131 struct perf_event_attr *attr, u32 ids, u64 *id, 132 perf_event__handler_t process); 133 int perf_event__synthesize_attrs(struct perf_tool *tool, 134 struct perf_evlist *evlist, 135 perf_event__handler_t process); 136 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 137 struct perf_evsel *evsel, 138 perf_event__handler_t process); 139 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 140 struct perf_evsel *evsel, 141 perf_event__handler_t process); 142 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 143 struct perf_evsel *evsel, 144 perf_event__handler_t process); 145 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 146 struct perf_evsel *evsel, 147 perf_event__handler_t process); 148 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 149 struct perf_evlist **pevlist); 150 int perf_event__process_event_update(struct perf_tool *tool, 151 union perf_event *event, 152 struct perf_evlist **pevlist); 153 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 154 155 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 156 int fd, struct perf_evlist *evlist, 157 perf_event__handler_t process); 158 int perf_event__process_tracing_data(struct perf_session *session, 159 union perf_event *event); 160 161 int perf_event__synthesize_build_id(struct perf_tool *tool, 162 struct dso *pos, u16 misc, 163 perf_event__handler_t process, 164 struct machine *machine); 165 int perf_event__process_build_id(struct perf_session *session, 166 union perf_event *event); 167 bool is_perf_magic(u64 magic); 168 169 #define NAME_ALIGN 64 170 171 struct feat_fd; 172 173 int do_write(struct feat_fd *fd, const void *buf, size_t size); 174 175 int write_padded(struct feat_fd *fd, const void *bf, 176 size_t count, size_t count_aligned); 177 178 /* 179 * arch specific callback 180 */ 181 int get_cpuid(char *buffer, size_t sz); 182 183 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 184 int strcmp_cpuid_str(const char *s1, const char *s2); 185 #endif /* __PERF_HEADER_H */ 186