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_LAST_FEATURE, 42 HEADER_FEAT_BITS = 256, 43 }; 44 45 enum perf_header_version { 46 PERF_HEADER_VERSION_1, 47 PERF_HEADER_VERSION_2, 48 }; 49 50 struct perf_file_section { 51 u64 offset; 52 u64 size; 53 }; 54 55 struct perf_file_header { 56 u64 magic; 57 u64 size; 58 u64 attr_size; 59 struct perf_file_section attrs; 60 struct perf_file_section data; 61 /* event_types is ignored */ 62 struct perf_file_section event_types; 63 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 64 }; 65 66 struct perf_pipe_file_header { 67 u64 magic; 68 u64 size; 69 }; 70 71 struct perf_header; 72 73 int perf_file_header__read(struct perf_file_header *header, 74 struct perf_header *ph, int fd); 75 76 struct perf_header { 77 enum perf_header_version version; 78 bool needs_swap; 79 u64 data_offset; 80 u64 data_size; 81 u64 feat_offset; 82 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 83 struct perf_env env; 84 }; 85 86 struct perf_evlist; 87 struct perf_session; 88 89 int perf_session__read_header(struct perf_session *session); 90 int perf_session__write_header(struct perf_session *session, 91 struct perf_evlist *evlist, 92 int fd, bool at_exit); 93 int perf_header__write_pipe(int fd); 94 95 void perf_header__set_feat(struct perf_header *header, int feat); 96 void perf_header__clear_feat(struct perf_header *header, int feat); 97 bool perf_header__has_feat(const struct perf_header *header, int feat); 98 99 int perf_header__set_cmdline(int argc, const char **argv); 100 101 int perf_header__process_sections(struct perf_header *header, int fd, 102 void *data, 103 int (*process)(struct perf_file_section *section, 104 struct perf_header *ph, 105 int feat, int fd, void *data)); 106 107 int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); 108 109 int perf_event__synthesize_features(struct perf_tool *tool, 110 struct perf_session *session, 111 struct perf_evlist *evlist, 112 perf_event__handler_t process); 113 114 int perf_event__synthesize_extra_attr(struct perf_tool *tool, 115 struct perf_evlist *evsel_list, 116 perf_event__handler_t process, 117 bool is_pipe); 118 119 int perf_event__process_feature(struct perf_tool *tool, 120 union perf_event *event, 121 struct perf_session *session); 122 123 int perf_event__synthesize_attr(struct perf_tool *tool, 124 struct perf_event_attr *attr, u32 ids, u64 *id, 125 perf_event__handler_t process); 126 int perf_event__synthesize_attrs(struct perf_tool *tool, 127 struct perf_session *session, 128 perf_event__handler_t process); 129 int perf_event__synthesize_event_update_unit(struct perf_tool *tool, 130 struct perf_evsel *evsel, 131 perf_event__handler_t process); 132 int perf_event__synthesize_event_update_scale(struct perf_tool *tool, 133 struct perf_evsel *evsel, 134 perf_event__handler_t process); 135 int perf_event__synthesize_event_update_name(struct perf_tool *tool, 136 struct perf_evsel *evsel, 137 perf_event__handler_t process); 138 int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, 139 struct perf_evsel *evsel, 140 perf_event__handler_t process); 141 int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, 142 struct perf_evlist **pevlist); 143 int perf_event__process_event_update(struct perf_tool *tool, 144 union perf_event *event, 145 struct perf_evlist **pevlist); 146 size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); 147 148 int perf_event__synthesize_tracing_data(struct perf_tool *tool, 149 int fd, struct perf_evlist *evlist, 150 perf_event__handler_t process); 151 int perf_event__process_tracing_data(struct perf_tool *tool, 152 union perf_event *event, 153 struct perf_session *session); 154 155 int perf_event__synthesize_build_id(struct perf_tool *tool, 156 struct dso *pos, u16 misc, 157 perf_event__handler_t process, 158 struct machine *machine); 159 int perf_event__process_build_id(struct perf_tool *tool, 160 union perf_event *event, 161 struct perf_session *session); 162 bool is_perf_magic(u64 magic); 163 164 #define NAME_ALIGN 64 165 166 struct feat_fd; 167 168 int do_write(struct feat_fd *fd, const void *buf, size_t size); 169 170 int write_padded(struct feat_fd *fd, const void *bf, 171 size_t count, size_t count_aligned); 172 173 /* 174 * arch specific callback 175 */ 176 int get_cpuid(char *buffer, size_t sz); 177 178 char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); 179 int strcmp_cpuid_str(const char *s1, const char *s2); 180 #endif /* __PERF_HEADER_H */ 181