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_LAST_FEATURE, 40 HEADER_FEAT_BITS = 256, 41 }; 42 43 enum perf_header_version { 44 PERF_HEADER_VERSION_1, 45 PERF_HEADER_VERSION_2, 46 }; 47 48 struct perf_file_section { 49 u64 offset; 50 u64 size; 51 }; 52 53 struct perf_file_header { 54 u64 magic; 55 u64 size; 56 u64 attr_size; 57 struct perf_file_section attrs; 58 struct perf_file_section data; 59 /* event_types is ignored */ 60 struct perf_file_section event_types; 61 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 62 }; 63 64 struct perf_pipe_file_header { 65 u64 magic; 66 u64 size; 67 }; 68 69 struct perf_header; 70 71 int perf_file_header__read(struct perf_file_header *header, 72 struct perf_header *ph, int fd); 73 74 struct perf_header { 75 enum perf_header_version version; 76 bool needs_swap; 77 u64 data_offset; 78 u64 data_size; 79 u64 feat_offset; 80 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 81 struct perf_env env; 82 }; 83 84 struct perf_evlist; 85 struct perf_session; 86 87 int perf_session__read_header(struct perf_session *session); 88 int perf_session__write_header(struct perf_session *session, 89 struct perf_evlist *evlist, 90 int fd, bool at_exit); 91 int perf_header__write_pipe(int fd); 92 93 void perf_header__set_feat(struct perf_header *header, int feat); 94 void perf_header__clear_feat(struct perf_header *header, int feat); 95 bool perf_header__has_feat(const struct perf_header *header, int feat); 96 97 int perf_header__set_cmdline(int argc, const char **argv); 98 99 int perf_header__process_sections(struct perf_header *header, int fd, 100 void *data, 101 int (*process)(struct perf_file_section *section, 102 struct perf_header *ph, 103 int feat, int fd, void *data)); 104 105 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 106 107 int perf_event__synthesize_features(struct perf_tool *tool, 108 struct perf_session *session, 109 struct perf_evlist *evlist, 110 perf_event__handler_t process); 111 112 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 113 struct perf_evlist *evsel_list, 114 perf_event__handler_t process, 115 bool is_pipe); 116 117 int perf_event__process_feature(struct perf_tool *tool, 118 union perf_event *event, 119 struct perf_session *session); 120 121 int perf_event__synthesize_attr(struct perf_tool *tool, 122 struct perf_event_attr *attr, u32 ids, u64 *id, 123 perf_event__handler_t process); 124 int perf_event__synthesize_attrs(struct perf_tool *tool, 125 struct perf_session *session, 126 perf_event__handler_t process); 127 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 128 struct perf_evsel *evsel, 129 perf_event__handler_t process); 130 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 131 struct perf_evsel *evsel, 132 perf_event__handler_t process); 133 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 134 struct perf_evsel *evsel, 135 perf_event__handler_t process); 136 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 137 struct perf_evsel *evsel, 138 perf_event__handler_t process); 139 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 140 struct perf_evlist **pevlist); 141 int perf_event__process_event_update(struct perf_tool *tool, 142 union perf_event *event, 143 struct perf_evlist **pevlist); 144 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 145 146 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 147 int fd, struct perf_evlist *evlist, 148 perf_event__handler_t process); 149 int perf_event__process_tracing_data(struct perf_tool *tool, 150 union perf_event *event, 151 struct perf_session *session); 152 153 int perf_event__synthesize_build_id(struct perf_tool *tool, 154 struct dso *pos, u16 misc, 155 perf_event__handler_t process, 156 struct machine *machine); 157 int perf_event__process_build_id(struct perf_tool *tool, 158 union perf_event *event, 159 struct perf_session *session); 160 bool is_perf_magic(u64 magic); 161 162 #define NAME_ALIGN 64 163 164 struct feat_fd; 165 166 int do_write(struct feat_fd *fd, const void *buf, size_t size); 167 168 int write_padded(struct feat_fd *fd, const void *bf, 169 size_t count, size_t count_aligned); 170 171 /* 172 * arch specific callback 173 */ 174 int get_cpuid(char *buffer, size_t sz); 175 176 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 177 #endif /* __PERF_HEADER_H */ 178