1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_HEADER_H 3 #define __PERF_HEADER_H 4 5 #include <linux/perf_event.h> 6 #include <sys/types.h> 7 #include <stdbool.h> 8 #include <linux/bitmap.h> 9 #include <linux/types.h> 10 #include "event.h" 11 #include "env.h" 12 #include "pmu.h" 13 14 enum { 15 HEADER_RESERVED = 0, /* always cleared */ 16 HEADER_FIRST_FEATURE = 1, 17 HEADER_TRACING_DATA = 1, 18 HEADER_BUILD_ID, 19 20 HEADER_HOSTNAME, 21 HEADER_OSRELEASE, 22 HEADER_VERSION, 23 HEADER_ARCH, 24 HEADER_NRCPUS, 25 HEADER_CPUDESC, 26 HEADER_CPUID, 27 HEADER_TOTAL_MEM, 28 HEADER_CMDLINE, 29 HEADER_EVENT_DESC, 30 HEADER_CPU_TOPOLOGY, 31 HEADER_NUMA_TOPOLOGY, 32 HEADER_BRANCH_STACK, 33 HEADER_PMU_MAPPINGS, 34 HEADER_GROUP_DESC, 35 HEADER_AUXTRACE, 36 HEADER_STAT, 37 HEADER_CACHE, 38 HEADER_SAMPLE_TIME, 39 HEADER_MEM_TOPOLOGY, 40 HEADER_LAST_FEATURE, 41 HEADER_FEAT_BITS = 256, 42 }; 43 44 enum perf_header_version { 45 PERF_HEADER_VERSION_1, 46 PERF_HEADER_VERSION_2, 47 }; 48 49 struct perf_file_section { 50 u64 offset; 51 u64 size; 52 }; 53 54 struct perf_file_header { 55 u64 magic; 56 u64 size; 57 u64 attr_size; 58 struct perf_file_section attrs; 59 struct perf_file_section data; 60 /* event_types is ignored */ 61 struct perf_file_section event_types; 62 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 63 }; 64 65 struct perf_pipe_file_header { 66 u64 magic; 67 u64 size; 68 }; 69 70 struct perf_header; 71 72 int perf_file_header__read(struct perf_file_header *header, 73 struct perf_header *ph, int fd); 74 75 struct perf_header { 76 enum perf_header_version version; 77 bool needs_swap; 78 u64 data_offset; 79 u64 data_size; 80 u64 feat_offset; 81 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 82 struct perf_env env; 83 }; 84 85 struct perf_evlist; 86 struct perf_session; 87 88 int perf_session__read_header(struct perf_session *session); 89 int perf_session__write_header(struct perf_session *session, 90 struct perf_evlist *evlist, 91 int fd, bool at_exit); 92 int perf_header__write_pipe(int fd); 93 94 void perf_header__set_feat(struct perf_header *header, int feat); 95 void perf_header__clear_feat(struct perf_header *header, int feat); 96 bool perf_header__has_feat(const struct perf_header *header, int feat); 97 98 int perf_header__set_cmdline(int argc, const char **argv); 99 100 int perf_header__process_sections(struct perf_header *header, int fd, 101 void *data, 102 int (*process)(struct perf_file_section *section, 103 struct perf_header *ph, 104 int feat, int fd, void *data)); 105 106 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 107 108 int perf_event__synthesize_features(struct perf_tool *tool, 109 struct perf_session *session, 110 struct perf_evlist *evlist, 111 perf_event__handler_t process); 112 113 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 114 struct perf_evlist *evsel_list, 115 perf_event__handler_t process, 116 bool is_pipe); 117 118 int perf_event__process_feature(struct perf_tool *tool, 119 union perf_event *event, 120 struct perf_session *session); 121 122 int perf_event__synthesize_attr(struct perf_tool *tool, 123 struct perf_event_attr *attr, u32 ids, u64 *id, 124 perf_event__handler_t process); 125 int perf_event__synthesize_attrs(struct perf_tool *tool, 126 struct perf_session *session, 127 perf_event__handler_t process); 128 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 129 struct perf_evsel *evsel, 130 perf_event__handler_t process); 131 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 132 struct perf_evsel *evsel, 133 perf_event__handler_t process); 134 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 135 struct perf_evsel *evsel, 136 perf_event__handler_t process); 137 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 138 struct perf_evsel *evsel, 139 perf_event__handler_t process); 140 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 141 struct perf_evlist **pevlist); 142 int perf_event__process_event_update(struct perf_tool *tool, 143 union perf_event *event, 144 struct perf_evlist **pevlist); 145 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 146 147 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 148 int fd, struct perf_evlist *evlist, 149 perf_event__handler_t process); 150 int perf_event__process_tracing_data(struct perf_tool *tool, 151 union perf_event *event, 152 struct perf_session *session); 153 154 int perf_event__synthesize_build_id(struct perf_tool *tool, 155 struct dso *pos, u16 misc, 156 perf_event__handler_t process, 157 struct machine *machine); 158 int perf_event__process_build_id(struct perf_tool *tool, 159 union perf_event *event, 160 struct perf_session *session); 161 bool is_perf_magic(u64 magic); 162 163 #define NAME_ALIGN 64 164 165 struct feat_fd; 166 167 int do_write(struct feat_fd *fd, const void *buf, size_t size); 168 169 int write_padded(struct feat_fd *fd, const void *bf, 170 size_t count, size_t count_aligned); 171 172 /* 173 * arch specific callback 174 */ 175 int get_cpuid(char *buffer, size_t sz); 176 177 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 178 int strcmp_cpuid_str(const char *s1, const char *s2); 179 #endif /* __PERF_HEADER_H */ 180