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