1 // Copied from kernel sources. See COPYING for license details. 2 3 #ifndef PERF_INTERNALS_H_ 4 #define PERF_INTERNALS_H_ 5 6 #include <linux/limits.h> 7 #include <stddef.h> // For NULL 8 #include <stdint.h> 9 #include <sys/types.h> // For pid_t 10 11 #include "perf_event.h" 12 13 namespace quipper { 14 15 // These typedefs are from tools/perf/util/types.h in the kernel. 16 typedef uint64_t u64; 17 typedef int64_t s64; 18 typedef unsigned int u32; 19 typedef signed int s32; 20 typedef unsigned short u16; 21 typedef signed short s16; 22 typedef unsigned char u8; 23 typedef signed char s8; 24 25 // The first 64 bits of the perf header, used as a perf data file ID tag. 26 const uint64_t kPerfMagic = 0x32454c4946524550LL; // "PERFILE2" little-endian 27 28 // These data structures have been copied from the kernel. See files under 29 // tools/perf/util. 30 31 // 32 // From tools/perf/util/header.h 33 // 34 35 enum { 36 HEADER_RESERVED = 0, /* always cleared */ 37 HEADER_FIRST_FEATURE = 1, 38 HEADER_TRACING_DATA = 1, 39 HEADER_BUILD_ID, 40 41 HEADER_HOSTNAME, 42 HEADER_OSRELEASE, 43 HEADER_VERSION, 44 HEADER_ARCH, 45 HEADER_NRCPUS, 46 HEADER_CPUDESC, 47 HEADER_CPUID, 48 HEADER_TOTAL_MEM, 49 HEADER_CMDLINE, 50 HEADER_EVENT_DESC, 51 HEADER_CPU_TOPOLOGY, 52 HEADER_NUMA_TOPOLOGY, 53 HEADER_BRANCH_STACK, 54 HEADER_PMU_MAPPINGS, 55 HEADER_GROUP_DESC, 56 HEADER_LAST_FEATURE, 57 HEADER_FEAT_BITS = 256, 58 }; 59 60 struct perf_file_section { 61 u64 offset; 62 u64 size; 63 }; 64 65 struct perf_file_attr { 66 struct perf_event_attr attr; 67 struct perf_file_section ids; 68 }; 69 70 #define BITS_PER_BYTE 8 71 #define DIV_ROUND_UP(n, d) (((n) + (d)-1) / (d)) 72 #define BITS_TO_LONGS(nr) \ 73 DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) 74 75 #define DECLARE_BITMAP(name, bits) \ 76 unsigned long name[BITS_TO_LONGS(bits)] 77 78 struct perf_file_header { 79 u64 magic; 80 u64 size; 81 u64 attr_size; 82 struct perf_file_section attrs; 83 struct perf_file_section data; 84 struct perf_file_section event_types; 85 DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); 86 }; 87 88 #undef BITS_PER_BYTE 89 #undef DIV_ROUND_UP 90 #undef BITS_TO_LONGS 91 #undef DECLARE_BITMAP 92 93 struct perf_pipe_file_header { 94 u64 magic; 95 u64 size; 96 }; 97 98 // 99 // From tools/perf/util/event.h 100 // 101 102 struct mmap_event { 103 struct perf_event_header header; 104 u32 pid, tid; 105 u64 start; 106 u64 len; 107 u64 pgoff; 108 char filename[PATH_MAX]; 109 }; 110 111 struct mmap2_event { 112 struct perf_event_header header; 113 u32 pid, tid; 114 u64 start; 115 u64 len; 116 u64 pgoff; 117 u32 maj; 118 u32 min; 119 u64 ino; 120 u64 ino_generation; 121 u32 prot; 122 u32 flags; 123 char filename[PATH_MAX]; 124 }; 125 126 struct comm_event { 127 struct perf_event_header header; 128 u32 pid, tid; 129 char comm[16]; 130 }; 131 132 struct fork_event { 133 struct perf_event_header header; 134 u32 pid, ppid; 135 u32 tid, ptid; 136 u64 time; 137 }; 138 139 struct lost_event { 140 struct perf_event_header header; 141 u64 id; 142 u64 lost; 143 }; 144 145 /* 146 * PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID 147 */ 148 struct read_event { 149 struct perf_event_header header; 150 u32 pid, tid; 151 u64 value; 152 u64 time_enabled; 153 u64 time_running; 154 u64 id; 155 }; 156 157 struct throttle_event { 158 struct perf_event_header header; 159 u64 time; 160 u64 id; 161 u64 stream_id; 162 }; 163 164 #define PERF_SAMPLE_MASK \ 165 (PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | PERF_SAMPLE_ADDR | \ 166 PERF_SAMPLE_ID | PERF_SAMPLE_STREAM_ID | PERF_SAMPLE_CPU | \ 167 PERF_SAMPLE_PERIOD | PERF_SAMPLE_IDENTIFIER) 168 169 /* perf sample has 16 bits size limit */ 170 #define PERF_SAMPLE_MAX_SIZE (1 << 16) 171 172 struct sample_event { 173 struct perf_event_header header; 174 u64 array[]; 175 }; 176 177 #if 0 178 // PERF_REGS_MAX is arch-dependent, so this is not a useful struct as-is. 179 struct regs_dump { 180 u64 abi; 181 u64 mask; 182 u64 *regs; 183 184 /* Cached values/mask filled by first register access. */ 185 u64 cache_regs[PERF_REGS_MAX]; 186 u64 cache_mask; 187 }; 188 #endif 189 190 struct stack_dump { 191 u16 offset; 192 u64 size; 193 char *data; 194 }; 195 196 struct sample_read_value { 197 u64 value; 198 u64 id; 199 }; 200 201 struct sample_read { 202 u64 time_enabled; 203 u64 time_running; 204 struct { 205 struct { 206 u64 nr; 207 struct sample_read_value *values; 208 } group; 209 struct sample_read_value one; 210 }; 211 }; 212 213 struct ip_callchain { 214 u64 nr; 215 u64 ips[0]; 216 }; 217 218 struct branch_flags { 219 u64 mispred : 1; 220 u64 predicted : 1; 221 u64 in_tx : 1; 222 u64 abort : 1; 223 u64 reserved : 60; 224 }; 225 226 struct branch_entry { 227 u64 from; 228 u64 to; 229 struct branch_flags flags; 230 }; 231 232 struct branch_stack { 233 u64 nr; 234 struct branch_entry entries[0]; 235 }; 236 237 // All the possible fields of a perf sample. This is not an actual data 238 // structure found in raw perf data, as each field may or may not be present in 239 // the data. 240 struct perf_sample { 241 u64 ip; 242 u32 pid, tid; 243 u64 time; 244 u64 addr; 245 u64 id; 246 u64 stream_id; 247 u64 period; 248 u64 weight; 249 u64 transaction; 250 u32 cpu; 251 u32 raw_size; 252 u64 data_src; 253 u32 flags; 254 u16 insn_len; 255 void *raw_data; 256 struct ip_callchain *callchain; 257 struct branch_stack *branch_stack; 258 // struct regs_dump user_regs; // See struct regs_dump above. 259 struct stack_dump user_stack; 260 struct sample_read read; 261 perf_sampleperf_sample262 perf_sample() : raw_data(NULL), callchain(NULL), branch_stack(NULL) { 263 read.group.values = NULL; 264 } ~perf_sampleperf_sample265 ~perf_sample() { 266 delete[] callchain; 267 delete[] branch_stack; 268 delete[] reinterpret_cast<char *>(raw_data); 269 delete[] read.group.values; 270 } 271 }; 272 273 // Taken from tools/perf/util/include/linux/kernel.h 274 #define ALIGN(x, a) __ALIGN_MASK(x, (decltype(x))(a)-1) 275 #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) 276 277 // If this is changed, kBuildIDArraySize in perf_reader.h must also be changed. 278 #define BUILD_ID_SIZE 20 279 280 struct build_id_event { 281 struct perf_event_header header; 282 pid_t pid; 283 u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))]; 284 char filename[]; 285 }; 286 287 #undef ALIGN 288 #undef __ALIGN_MASK 289 #undef BUILD_ID_SIZE 290 291 enum perf_user_event_type { 292 /* above any possible kernel type */ 293 PERF_RECORD_USER_TYPE_START = 64, 294 PERF_RECORD_HEADER_ATTR = 64, 295 PERF_RECORD_HEADER_EVENT_TYPE = 65, /* depreceated */ 296 PERF_RECORD_HEADER_TRACING_DATA = 66, 297 PERF_RECORD_HEADER_BUILD_ID = 67, 298 PERF_RECORD_FINISHED_ROUND = 68, 299 PERF_RECORD_ID_INDEX = 69, 300 PERF_RECORD_AUXTRACE_INFO = 70, 301 PERF_RECORD_AUXTRACE = 71, 302 PERF_RECORD_AUXTRACE_ERROR = 72, 303 PERF_RECORD_THREAD_MAP = 73, 304 PERF_RECORD_CPU_MAP = 74, 305 PERF_RECORD_STAT_CONFIG = 75, 306 PERF_RECORD_STAT = 76, 307 PERF_RECORD_STAT_ROUND = 77, 308 PERF_RECORD_EVENT_UPDATE = 78, 309 PERF_RECORD_TIME_CONV = 79, 310 PERF_RECORD_HEADER_FEATURE = 80, 311 PERF_RECORD_HEADER_MAX = 81, 312 }; 313 314 struct attr_event { 315 struct perf_event_header header; 316 struct perf_event_attr attr; 317 u64 id[]; 318 }; 319 320 #define MAX_EVENT_NAME 64 321 322 struct perf_trace_event_type { 323 u64 event_id; 324 char name[MAX_EVENT_NAME]; 325 }; 326 327 #undef MAX_EVENT_NAME 328 329 struct event_type_event { 330 struct perf_event_header header; 331 struct perf_trace_event_type event_type; 332 }; 333 334 struct tracing_data_event { 335 struct perf_event_header header; 336 u32 size; 337 }; 338 339 struct auxtrace_event { 340 struct perf_event_header header; 341 u64 size; 342 u64 offset; 343 u64 reference; 344 u32 idx; 345 u32 tid; 346 u32 cpu; 347 u32 reserved__; /* For alignment */ 348 }; 349 350 struct aux_event { 351 struct perf_event_header header; 352 u64 aux_offset; 353 u64 aux_size; 354 u64 flags; 355 }; 356 357 union perf_event { 358 struct perf_event_header header; 359 struct mmap_event mmap; 360 struct mmap2_event mmap2; 361 struct comm_event comm; 362 struct fork_event fork; 363 struct lost_event lost; 364 struct read_event read; 365 struct throttle_event throttle; 366 struct sample_event sample; 367 struct attr_event attr; 368 struct event_type_event event_type; 369 struct tracing_data_event tracing_data; 370 struct build_id_event build_id; 371 struct auxtrace_event auxtrace; 372 struct aux_event aux; 373 }; 374 375 typedef perf_event event_t; 376 377 } // namespace quipper 378 379 #endif /*PERF_INTERNALS_H_*/ 380