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_LAST_FEATURE, 45 HEADER_FEAT_BITS = 256, 46 }; 47 48 enum perf_header_version { 49 PERF_HEADER_VERSION_1, 50 PERF_HEADER_VERSION_2, 51 }; 52 53 enum perf_dir_version { 54 PERF_DIR_VERSION = 1, 55 }; 56 57 struct perf_file_section { 58 u64 offset; 59 u64 size; 60 }; 61 62 struct 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 73 struct perf_pipe_file_header { 74 u64 magic; 75 u64 size; 76 }; 77 78 struct perf_header; 79 80 int perf_file_header__read(struct perf_file_header *header, 81 struct perf_header *ph, int fd); 82 83 struct 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 93 struct perf_evlist; 94 struct perf_session; 95 96 int perf_session__read_header(struct perf_session *session); 97 int perf_session__write_header(struct perf_session *session, 98 struct perf_evlist *evlist, 99 int fd, bool at_exit); 100 int perf_header__write_pipe(int fd); 101 102 void perf_header__set_feat(struct perf_header *header, int feat); 103 void perf_header__clear_feat(struct perf_header *header, int feat); 104 bool perf_header__has_feat(const struct perf_header *header, int feat); 105 106 int perf_header__set_cmdline(int argc, const char **argv); 107 108 int perf_header__process_sections(struct perf_header *header, int fd, 109 void *data, 110 int (*process)(struct perf_file_section *section, 111 struct perf_header *ph, 112 int feat, int fd, void *data)); 113 114 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 115 116 int perf_event__synthesize_features(struct perf_tool *tool, 117 struct perf_session *session, 118 struct perf_evlist *evlist, 119 perf_event__handler_t process); 120 121 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 122 struct perf_evlist *evsel_list, 123 perf_event__handler_t process, 124 bool is_pipe); 125 126 int perf_event__process_feature(struct perf_session *session, 127 union perf_event *event); 128 129 int perf_event__synthesize_attr(struct perf_tool *tool, 130 struct perf_event_attr *attr, u32 ids, u64 *id, 131 perf_event__handler_t process); 132 int perf_event__synthesize_attrs(struct perf_tool *tool, 133 struct perf_evlist *evlist, 134 perf_event__handler_t process); 135 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 136 struct perf_evsel *evsel, 137 perf_event__handler_t process); 138 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 139 struct perf_evsel *evsel, 140 perf_event__handler_t process); 141 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 142 struct perf_evsel *evsel, 143 perf_event__handler_t process); 144 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 145 struct perf_evsel *evsel, 146 perf_event__handler_t process); 147 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 148 struct perf_evlist **pevlist); 149 int perf_event__process_event_update(struct perf_tool *tool, 150 union perf_event *event, 151 struct perf_evlist **pevlist); 152 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 153 154 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 155 int fd, struct perf_evlist *evlist, 156 perf_event__handler_t process); 157 int perf_event__process_tracing_data(struct perf_session *session, 158 union perf_event *event); 159 160 int perf_event__synthesize_build_id(struct perf_tool *tool, 161 struct dso *pos, u16 misc, 162 perf_event__handler_t process, 163 struct machine *machine); 164 int perf_event__process_build_id(struct perf_session *session, 165 union perf_event *event); 166 bool is_perf_magic(u64 magic); 167 168 #define NAME_ALIGN 64 169 170 struct feat_fd; 171 172 int do_write(struct feat_fd *fd, const void *buf, size_t size); 173 174 int write_padded(struct feat_fd *fd, const void *bf, 175 size_t count, size_t count_aligned); 176 177 /* 178 * arch specific callback 179 */ 180 int get_cpuid(char *buffer, size_t sz); 181 182 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 183 int strcmp_cpuid_str(const char *s1, const char *s2); 184 #endif /* __PERF_HEADER_H */ 185