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_LAST_FEATURE, 39 HEADER_FEAT_BITS = 256, 40 }; 41 42 enum perf_header_version { 43 PERF_HEADER_VERSION_1, 44 PERF_HEADER_VERSION_2, 45 }; 46 47 struct perf_file_section { 48 u64 offset; 49 u64 size; 50 }; 51 52 struct perf_file_header { 53 u64 magic; 54 u64 size; 55 u64 attr_size; 56 struct perf_file_section attrs; 57 struct perf_file_section data; 58 /* event_types is ignored */ 59 struct perf_file_section event_types; 60 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 61 }; 62 63 struct perf_pipe_file_header { 64 u64 magic; 65 u64 size; 66 }; 67 68 struct perf_header; 69 70 int perf_file_header__read(struct perf_file_header *header, 71 struct perf_header *ph, int fd); 72 73 struct perf_header { 74 enum perf_header_version version; 75 bool needs_swap; 76 u64 data_offset; 77 u64 data_size; 78 u64 feat_offset; 79 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 80 struct perf_env env; 81 }; 82 83 struct perf_evlist; 84 struct perf_session; 85 86 int perf_session__read_header(struct perf_session *session); 87 int perf_session__write_header(struct perf_session *session, 88 struct perf_evlist *evlist, 89 int fd, bool at_exit); 90 int perf_header__write_pipe(int fd); 91 92 void perf_header__set_feat(struct perf_header *header, int feat); 93 void perf_header__clear_feat(struct perf_header *header, int feat); 94 bool perf_header__has_feat(const struct perf_header *header, int feat); 95 96 int perf_header__set_cmdline(int argc, const char **argv); 97 98 int perf_header__process_sections(struct perf_header *header, int fd, 99 void *data, 100 int (*process)(struct perf_file_section *section, 101 struct perf_header *ph, 102 int feat, int fd, void *data)); 103 104 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 105 106 int perf_event__synthesize_features(struct perf_tool *tool, 107 struct perf_session *session, 108 struct perf_evlist *evlist, 109 perf_event__handler_t process); 110 111 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 112 struct perf_evlist *evsel_list, 113 perf_event__handler_t process, 114 bool is_pipe); 115 116 int perf_event__process_feature(struct perf_tool *tool, 117 union perf_event *event, 118 struct perf_session *session); 119 120 int perf_event__synthesize_attr(struct perf_tool *tool, 121 struct perf_event_attr *attr, u32 ids, u64 *id, 122 perf_event__handler_t process); 123 int perf_event__synthesize_attrs(struct perf_tool *tool, 124 struct perf_session *session, 125 perf_event__handler_t process); 126 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 127 struct perf_evsel *evsel, 128 perf_event__handler_t process); 129 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 130 struct perf_evsel *evsel, 131 perf_event__handler_t process); 132 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 133 struct perf_evsel *evsel, 134 perf_event__handler_t process); 135 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 136 struct perf_evsel *evsel, 137 perf_event__handler_t process); 138 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 139 struct perf_evlist **pevlist); 140 int perf_event__process_event_update(struct perf_tool *tool, 141 union perf_event *event, 142 struct perf_evlist **pevlist); 143 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 144 145 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 146 int fd, struct perf_evlist *evlist, 147 perf_event__handler_t process); 148 int perf_event__process_tracing_data(struct perf_tool *tool, 149 union perf_event *event, 150 struct perf_session *session); 151 152 int perf_event__synthesize_build_id(struct perf_tool *tool, 153 struct dso *pos, u16 misc, 154 perf_event__handler_t process, 155 struct machine *machine); 156 int perf_event__process_build_id(struct perf_tool *tool, 157 union perf_event *event, 158 struct perf_session *session); 159 bool is_perf_magic(u64 magic); 160 161 #define NAME_ALIGN 64 162 163 struct feat_fd; 164 165 int do_write(struct feat_fd *fd, const void *buf, size_t size); 166 167 int write_padded(struct feat_fd *fd, const void *bf, 168 size_t count, size_t count_aligned); 169 170 /* 171 * arch specific callback 172 */ 173 int get_cpuid(char *buffer, size_t sz); 174 175 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 176 #endif /* __PERF_HEADER_H */ 177