1 /* 2 * Performance events: 3 * 4 * Copyright (C) 2008-2009, Thomas Gleixner <tglx (at) linutronix.de> 5 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar 6 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra 7 * 8 * Data type definitions, declarations, prototypes. 9 * 10 * Started by: Thomas Gleixner and Ingo Molnar 11 * 12 * For licencing details see kernel-base/COPYING 13 */ 14 #ifndef _UAPI_LINUX_PERF_EVENT_H 15 #define _UAPI_LINUX_PERF_EVENT_H 16 17 #include <linux/types.h> 18 #include <linux/ioctl.h> 19 #include <asm/byteorder.h> 20 21 /* 22 * User-space ABI bits: 23 */ 24 25 /* 26 * attr.type 27 */ 28 enum perf_type_id { 29 PERF_TYPE_HARDWARE = 0, 30 PERF_TYPE_SOFTWARE = 1, 31 PERF_TYPE_TRACEPOINT = 2, 32 PERF_TYPE_HW_CACHE = 3, 33 PERF_TYPE_RAW = 4, 34 PERF_TYPE_BREAKPOINT = 5, 35 36 PERF_TYPE_MAX, /* non-ABI */ 37 }; 38 39 /* 40 * Generalized performance event event_id types, used by the 41 * attr.event_id parameter of the sys_perf_event_open() 42 * syscall: 43 */ 44 enum perf_hw_id { 45 /* 46 * Common hardware events, generalized by the kernel: 47 */ 48 PERF_COUNT_HW_CPU_CYCLES = 0, 49 PERF_COUNT_HW_INSTRUCTIONS = 1, 50 PERF_COUNT_HW_CACHE_REFERENCES = 2, 51 PERF_COUNT_HW_CACHE_MISSES = 3, 52 PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, 53 PERF_COUNT_HW_BRANCH_MISSES = 5, 54 PERF_COUNT_HW_BUS_CYCLES = 6, 55 PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, 56 PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, 57 PERF_COUNT_HW_REF_CPU_CYCLES = 9, 58 59 PERF_COUNT_HW_MAX, /* non-ABI */ 60 }; 61 62 /* 63 * Generalized hardware cache events: 64 * 65 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x 66 * { read, write, prefetch } x 67 * { accesses, misses } 68 */ 69 enum perf_hw_cache_id { 70 PERF_COUNT_HW_CACHE_L1D = 0, 71 PERF_COUNT_HW_CACHE_L1I = 1, 72 PERF_COUNT_HW_CACHE_LL = 2, 73 PERF_COUNT_HW_CACHE_DTLB = 3, 74 PERF_COUNT_HW_CACHE_ITLB = 4, 75 PERF_COUNT_HW_CACHE_BPU = 5, 76 PERF_COUNT_HW_CACHE_NODE = 6, 77 78 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ 79 }; 80 81 enum perf_hw_cache_op_id { 82 PERF_COUNT_HW_CACHE_OP_READ = 0, 83 PERF_COUNT_HW_CACHE_OP_WRITE = 1, 84 PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, 85 86 PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ 87 }; 88 89 enum perf_hw_cache_op_result_id { 90 PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, 91 PERF_COUNT_HW_CACHE_RESULT_MISS = 1, 92 93 PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ 94 }; 95 96 /* 97 * Special "software" events provided by the kernel, even if the hardware 98 * does not support performance events. These events measure various 99 * physical and sw events of the kernel (and allow the profiling of them as 100 * well): 101 */ 102 enum perf_sw_ids { 103 PERF_COUNT_SW_CPU_CLOCK = 0, 104 PERF_COUNT_SW_TASK_CLOCK = 1, 105 PERF_COUNT_SW_PAGE_FAULTS = 2, 106 PERF_COUNT_SW_CONTEXT_SWITCHES = 3, 107 PERF_COUNT_SW_CPU_MIGRATIONS = 4, 108 PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, 109 PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, 110 PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, 111 PERF_COUNT_SW_EMULATION_FAULTS = 8, 112 PERF_COUNT_SW_DUMMY = 9, 113 PERF_COUNT_SW_BPF_OUTPUT = 10, 114 115 PERF_COUNT_SW_MAX, /* non-ABI */ 116 }; 117 118 /* 119 * Bits that can be set in attr.sample_type to request information 120 * in the overflow packets. 121 */ 122 enum perf_event_sample_format { 123 PERF_SAMPLE_IP = 1U << 0, 124 PERF_SAMPLE_TID = 1U << 1, 125 PERF_SAMPLE_TIME = 1U << 2, 126 PERF_SAMPLE_ADDR = 1U << 3, 127 PERF_SAMPLE_READ = 1U << 4, 128 PERF_SAMPLE_CALLCHAIN = 1U << 5, 129 PERF_SAMPLE_ID = 1U << 6, 130 PERF_SAMPLE_CPU = 1U << 7, 131 PERF_SAMPLE_PERIOD = 1U << 8, 132 PERF_SAMPLE_STREAM_ID = 1U << 9, 133 PERF_SAMPLE_RAW = 1U << 10, 134 PERF_SAMPLE_BRANCH_STACK = 1U << 11, 135 PERF_SAMPLE_REGS_USER = 1U << 12, 136 PERF_SAMPLE_STACK_USER = 1U << 13, 137 PERF_SAMPLE_WEIGHT = 1U << 14, 138 PERF_SAMPLE_DATA_SRC = 1U << 15, 139 PERF_SAMPLE_IDENTIFIER = 1U << 16, 140 PERF_SAMPLE_TRANSACTION = 1U << 17, 141 PERF_SAMPLE_REGS_INTR = 1U << 18, 142 143 PERF_SAMPLE_MAX = 1U << 19, /* non-ABI */ 144 }; 145 146 /* 147 * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set 148 * 149 * If the user does not pass priv level information via branch_sample_type, 150 * the kernel uses the event's priv level. Branch and event priv levels do 151 * not have to match. Branch priv level is checked for permissions. 152 * 153 * The branch types can be combined, however BRANCH_ANY covers all types 154 * of branches and therefore it supersedes all the other types. 155 */ 156 enum perf_branch_sample_type_shift { 157 PERF_SAMPLE_BRANCH_USER_SHIFT = 0, /* user branches */ 158 PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1, /* kernel branches */ 159 PERF_SAMPLE_BRANCH_HV_SHIFT = 2, /* hypervisor branches */ 160 161 PERF_SAMPLE_BRANCH_ANY_SHIFT = 3, /* any branch types */ 162 PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT = 4, /* any call branch */ 163 PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT = 5, /* any return branch */ 164 PERF_SAMPLE_BRANCH_IND_CALL_SHIFT = 6, /* indirect calls */ 165 PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT = 7, /* transaction aborts */ 166 PERF_SAMPLE_BRANCH_IN_TX_SHIFT = 8, /* in transaction */ 167 PERF_SAMPLE_BRANCH_NO_TX_SHIFT = 9, /* not in transaction */ 168 PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */ 169 170 PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */ 171 PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */ 172 PERF_SAMPLE_BRANCH_CALL_SHIFT = 13, /* direct call */ 173 174 PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT = 14, /* no flags */ 175 PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT = 15, /* no cycles */ 176 177 PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */ 178 }; 179 180 enum perf_branch_sample_type { 181 PERF_SAMPLE_BRANCH_USER = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT, 182 PERF_SAMPLE_BRANCH_KERNEL = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT, 183 PERF_SAMPLE_BRANCH_HV = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT, 184 185 PERF_SAMPLE_BRANCH_ANY = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT, 186 PERF_SAMPLE_BRANCH_ANY_CALL = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT, 187 PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT, 188 PERF_SAMPLE_BRANCH_IND_CALL = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT, 189 PERF_SAMPLE_BRANCH_ABORT_TX = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT, 190 PERF_SAMPLE_BRANCH_IN_TX = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT, 191 PERF_SAMPLE_BRANCH_NO_TX = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT, 192 PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT, 193 194 PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT, 195 PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT, 196 PERF_SAMPLE_BRANCH_CALL = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT, 197 198 PERF_SAMPLE_BRANCH_NO_FLAGS = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT, 199 PERF_SAMPLE_BRANCH_NO_CYCLES = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT, 200 201 PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT, 202 }; 203 204 #define PERF_SAMPLE_BRANCH_PLM_ALL \ 205 (PERF_SAMPLE_BRANCH_USER|\ 206 PERF_SAMPLE_BRANCH_KERNEL|\ 207 PERF_SAMPLE_BRANCH_HV) 208 209 /* 210 * Values to determine ABI of the registers dump. 211 */ 212 enum perf_sample_regs_abi { 213 PERF_SAMPLE_REGS_ABI_NONE = 0, 214 PERF_SAMPLE_REGS_ABI_32 = 1, 215 PERF_SAMPLE_REGS_ABI_64 = 2, 216 }; 217 218 /* 219 * Values for the memory transaction event qualifier, mostly for 220 * abort events. Multiple bits can be set. 221 */ 222 enum { 223 PERF_TXN_ELISION = (1 << 0), /* From elision */ 224 PERF_TXN_TRANSACTION = (1 << 1), /* From transaction */ 225 PERF_TXN_SYNC = (1 << 2), /* Instruction is related */ 226 PERF_TXN_ASYNC = (1 << 3), /* Instruction not related */ 227 PERF_TXN_RETRY = (1 << 4), /* Retry possible */ 228 PERF_TXN_CONFLICT = (1 << 5), /* Conflict abort */ 229 PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */ 230 PERF_TXN_CAPACITY_READ = (1 << 7), /* Capacity read abort */ 231 232 PERF_TXN_MAX = (1 << 8), /* non-ABI */ 233 234 /* bits 32..63 are reserved for the abort code */ 235 236 PERF_TXN_ABORT_MASK = (0xffffffffULL << 32), 237 PERF_TXN_ABORT_SHIFT = 32, 238 }; 239 240 /* 241 * The format of the data returned by read() on a perf event fd, 242 * as specified by attr.read_format: 243 * 244 * struct read_format { 245 * { u64 value; 246 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED 247 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING 248 * { u64 id; } && PERF_FORMAT_ID 249 * } && !PERF_FORMAT_GROUP 250 * 251 * { u64 nr; 252 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED 253 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING 254 * { u64 value; 255 * { u64 id; } && PERF_FORMAT_ID 256 * } cntr[nr]; 257 * } && PERF_FORMAT_GROUP 258 * }; 259 */ 260 enum perf_event_read_format { 261 PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, 262 PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, 263 PERF_FORMAT_ID = 1U << 2, 264 PERF_FORMAT_GROUP = 1U << 3, 265 266 PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ 267 }; 268 269 #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ 270 #define PERF_ATTR_SIZE_VER1 72 /* add: config2 */ 271 #define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */ 272 #define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */ 273 /* add: sample_stack_user */ 274 #define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */ 275 #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */ 276 277 /* 278 * Hardware event_id to monitor via a performance monitoring event: 279 * 280 * @sample_max_stack: Max number of frame pointers in a callchain, 281 * should be < /proc/sys/kernel/perf_event_max_stack 282 */ 283 struct perf_event_attr { 284 285 /* 286 * Major type: hardware/software/tracepoint/etc. 287 */ 288 __u32 type; 289 290 /* 291 * Size of the attr structure, for fwd/bwd compat. 292 */ 293 __u32 size; 294 295 /* 296 * Type specific configuration information. 297 */ 298 __u64 config; 299 300 union { 301 __u64 sample_period; 302 __u64 sample_freq; 303 }; 304 305 __u64 sample_type; 306 __u64 read_format; 307 308 __u64 disabled : 1, /* off by default */ 309 inherit : 1, /* children inherit it */ 310 pinned : 1, /* must always be on PMU */ 311 exclusive : 1, /* only group on PMU */ 312 exclude_user : 1, /* don't count user */ 313 exclude_kernel : 1, /* ditto kernel */ 314 exclude_hv : 1, /* ditto hypervisor */ 315 exclude_idle : 1, /* don't count when idle */ 316 mmap : 1, /* include mmap data */ 317 comm : 1, /* include comm data */ 318 freq : 1, /* use freq, not period */ 319 inherit_stat : 1, /* per task counts */ 320 enable_on_exec : 1, /* next exec enables */ 321 task : 1, /* trace fork/exit */ 322 watermark : 1, /* wakeup_watermark */ 323 /* 324 * precise_ip: 325 * 326 * 0 - SAMPLE_IP can have arbitrary skid 327 * 1 - SAMPLE_IP must have constant skid 328 * 2 - SAMPLE_IP requested to have 0 skid 329 * 3 - SAMPLE_IP must have 0 skid 330 * 331 * See also PERF_RECORD_MISC_EXACT_IP 332 */ 333 precise_ip : 2, /* skid constraint */ 334 mmap_data : 1, /* non-exec mmap data */ 335 sample_id_all : 1, /* sample_type all events */ 336 337 exclude_host : 1, /* don't count in host */ 338 exclude_guest : 1, /* don't count in guest */ 339 340 exclude_callchain_kernel : 1, /* exclude kernel callchains */ 341 exclude_callchain_user : 1, /* exclude user callchains */ 342 mmap2 : 1, /* include mmap with inode data */ 343 comm_exec : 1, /* flag comm events that are due to an exec */ 344 use_clockid : 1, /* use @clockid for time fields */ 345 context_switch : 1, /* context switch data */ 346 write_backward : 1, /* Write ring buffer from end to beginning */ 347 __reserved_1 : 36; 348 349 union { 350 __u32 wakeup_events; /* wakeup every n events */ 351 __u32 wakeup_watermark; /* bytes before wakeup */ 352 }; 353 354 __u32 bp_type; 355 union { 356 __u64 bp_addr; 357 __u64 config1; /* extension of config */ 358 }; 359 union { 360 __u64 bp_len; 361 __u64 config2; /* extension of config1 */ 362 }; 363 __u64 branch_sample_type; /* enum perf_branch_sample_type */ 364 365 /* 366 * Defines set of user regs to dump on samples. 367 * See asm/perf_regs.h for details. 368 */ 369 __u64 sample_regs_user; 370 371 /* 372 * Defines size of the user stack to dump on samples. 373 */ 374 __u32 sample_stack_user; 375 376 __s32 clockid; 377 /* 378 * Defines set of regs to dump for each sample 379 * state captured on: 380 * - precise = 0: PMU interrupt 381 * - precise > 0: sampled instruction 382 * 383 * See asm/perf_regs.h for details. 384 */ 385 __u64 sample_regs_intr; 386 387 /* 388 * Wakeup watermark for AUX area 389 */ 390 __u32 aux_watermark; 391 __u16 sample_max_stack; 392 __u16 __reserved_2; /* align to __u64 */ 393 }; 394 395 #define perf_flags(attr) (*(&(attr)->read_format + 1)) 396 397 /* 398 * Ioctls that can be done on a perf event fd: 399 */ 400 #define PERF_EVENT_IOC_ENABLE _IO ('$', 0) 401 #define PERF_EVENT_IOC_DISABLE _IO ('$', 1) 402 #define PERF_EVENT_IOC_REFRESH _IO ('$', 2) 403 #define PERF_EVENT_IOC_RESET _IO ('$', 3) 404 #define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64) 405 #define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) 406 #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) 407 #define PERF_EVENT_IOC_ID _IOR('$', 7, __u64 *) 408 #define PERF_EVENT_IOC_SET_BPF _IOW('$', 8, __u32) 409 #define PERF_EVENT_IOC_PAUSE_OUTPUT _IOW('$', 9, __u32) 410 411 enum perf_event_ioc_flags { 412 PERF_IOC_FLAG_GROUP = 1U << 0, 413 }; 414 415 /* 416 * Structure of the page that can be mapped via mmap 417 */ 418 struct perf_event_mmap_page { 419 __u32 version; /* version number of this structure */ 420 __u32 compat_version; /* lowest version this is compat with */ 421 422 /* 423 * Bits needed to read the hw events in user-space. 424 * 425 * u32 seq, time_mult, time_shift, index, width; 426 * u64 count, enabled, running; 427 * u64 cyc, time_offset; 428 * s64 pmc = 0; 429 * 430 * do { 431 * seq = pc->lock; 432 * barrier() 433 * 434 * enabled = pc->time_enabled; 435 * running = pc->time_running; 436 * 437 * if (pc->cap_usr_time && enabled != running) { 438 * cyc = rdtsc(); 439 * time_offset = pc->time_offset; 440 * time_mult = pc->time_mult; 441 * time_shift = pc->time_shift; 442 * } 443 * 444 * index = pc->index; 445 * count = pc->offset; 446 * if (pc->cap_user_rdpmc && index) { 447 * width = pc->pmc_width; 448 * pmc = rdpmc(index - 1); 449 * } 450 * 451 * barrier(); 452 * } while (pc->lock != seq); 453 * 454 * NOTE: for obvious reason this only works on self-monitoring 455 * processes. 456 */ 457 __u32 lock; /* seqlock for synchronization */ 458 __u32 index; /* hardware event identifier */ 459 __s64 offset; /* add to hardware event value */ 460 __u64 time_enabled; /* time event active */ 461 __u64 time_running; /* time event on cpu */ 462 union { 463 __u64 capabilities; 464 struct { 465 __u64 cap_bit0 : 1, /* Always 0, deprecated, see commit 860f085b74e9 */ 466 cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */ 467 468 cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ 469 cap_user_time : 1, /* The time_* fields are used */ 470 cap_user_time_zero : 1, /* The time_zero field is used */ 471 cap_____res : 59; 472 }; 473 }; 474 475 /* 476 * If cap_user_rdpmc this field provides the bit-width of the value 477 * read using the rdpmc() or equivalent instruction. This can be used 478 * to sign extend the result like: 479 * 480 * pmc <<= 64 - width; 481 * pmc >>= 64 - width; // signed shift right 482 * count += pmc; 483 */ 484 __u16 pmc_width; 485 486 /* 487 * If cap_usr_time the below fields can be used to compute the time 488 * delta since time_enabled (in ns) using rdtsc or similar. 489 * 490 * u64 quot, rem; 491 * u64 delta; 492 * 493 * quot = (cyc >> time_shift); 494 * rem = cyc & (((u64)1 << time_shift) - 1); 495 * delta = time_offset + quot * time_mult + 496 * ((rem * time_mult) >> time_shift); 497 * 498 * Where time_offset,time_mult,time_shift and cyc are read in the 499 * seqcount loop described above. This delta can then be added to 500 * enabled and possible running (if index), improving the scaling: 501 * 502 * enabled += delta; 503 * if (index) 504 * running += delta; 505 * 506 * quot = count / running; 507 * rem = count % running; 508 * count = quot * enabled + (rem * enabled) / running; 509 */ 510 __u16 time_shift; 511 __u32 time_mult; 512 __u64 time_offset; 513 /* 514 * If cap_usr_time_zero, the hardware clock (e.g. TSC) can be calculated 515 * from sample timestamps. 516 * 517 * time = timestamp - time_zero; 518 * quot = time / time_mult; 519 * rem = time % time_mult; 520 * cyc = (quot << time_shift) + (rem << time_shift) / time_mult; 521 * 522 * And vice versa: 523 * 524 * quot = cyc >> time_shift; 525 * rem = cyc & (((u64)1 << time_shift) - 1); 526 * timestamp = time_zero + quot * time_mult + 527 * ((rem * time_mult) >> time_shift); 528 */ 529 __u64 time_zero; 530 __u32 size; /* Header size up to __reserved[] fields. */ 531 532 /* 533 * Hole for extension of the self monitor capabilities 534 */ 535 536 __u8 __reserved[118*8+4]; /* align to 1k. */ 537 538 /* 539 * Control data for the mmap() data buffer. 540 * 541 * User-space reading the @data_head value should issue an smp_rmb(), 542 * after reading this value. 543 * 544 * When the mapping is PROT_WRITE the @data_tail value should be 545 * written by userspace to reflect the last read data, after issueing 546 * an smp_mb() to separate the data read from the ->data_tail store. 547 * In this case the kernel will not over-write unread data. 548 * 549 * See perf_output_put_handle() for the data ordering. 550 * 551 * data_{offset,size} indicate the location and size of the perf record 552 * buffer within the mmapped area. 553 */ 554 __u64 data_head; /* head in the data section */ 555 __u64 data_tail; /* user-space written tail */ 556 __u64 data_offset; /* where the buffer starts */ 557 __u64 data_size; /* data buffer size */ 558 559 /* 560 * AUX area is defined by aux_{offset,size} fields that should be set 561 * by the userspace, so that 562 * 563 * aux_offset >= data_offset + data_size 564 * 565 * prior to mmap()ing it. Size of the mmap()ed area should be aux_size. 566 * 567 * Ring buffer pointers aux_{head,tail} have the same semantics as 568 * data_{head,tail} and same ordering rules apply. 569 */ 570 __u64 aux_head; 571 __u64 aux_tail; 572 __u64 aux_offset; 573 __u64 aux_size; 574 }; 575 576 #define PERF_RECORD_MISC_CPUMODE_MASK (7 << 0) 577 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) 578 #define PERF_RECORD_MISC_KERNEL (1 << 0) 579 #define PERF_RECORD_MISC_USER (2 << 0) 580 #define PERF_RECORD_MISC_HYPERVISOR (3 << 0) 581 #define PERF_RECORD_MISC_GUEST_KERNEL (4 << 0) 582 #define PERF_RECORD_MISC_GUEST_USER (5 << 0) 583 584 /* 585 * Indicates that /proc/PID/maps parsing are truncated by time out. 586 */ 587 #define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT (1 << 12) 588 /* 589 * PERF_RECORD_MISC_MMAP_DATA and PERF_RECORD_MISC_COMM_EXEC are used on 590 * different events so can reuse the same bit position. 591 * Ditto PERF_RECORD_MISC_SWITCH_OUT. 592 */ 593 #define PERF_RECORD_MISC_MMAP_DATA (1 << 13) 594 #define PERF_RECORD_MISC_COMM_EXEC (1 << 13) 595 #define PERF_RECORD_MISC_SWITCH_OUT (1 << 13) 596 /* 597 * Indicates that the content of PERF_SAMPLE_IP points to 598 * the actual instruction that triggered the event. See also 599 * perf_event_attr::precise_ip. 600 */ 601 #define PERF_RECORD_MISC_EXACT_IP (1 << 14) 602 /* 603 * Reserve the last bit to indicate some extended misc field 604 */ 605 #define PERF_RECORD_MISC_EXT_RESERVED (1 << 15) 606 607 struct perf_event_header { 608 __u32 type; 609 __u16 misc; 610 __u16 size; 611 }; 612 613 enum perf_event_type { 614 615 /* 616 * If perf_event_attr.sample_id_all is set then all event types will 617 * have the sample_type selected fields related to where/when 618 * (identity) an event took place (TID, TIME, ID, STREAM_ID, CPU, 619 * IDENTIFIER) described in PERF_RECORD_SAMPLE below, it will be stashed 620 * just after the perf_event_header and the fields already present for 621 * the existing fields, i.e. at the end of the payload. That way a newer 622 * perf.data file will be supported by older perf tools, with these new 623 * optional fields being ignored. 624 * 625 * struct sample_id { 626 * { u32 pid, tid; } && PERF_SAMPLE_TID 627 * { u64 time; } && PERF_SAMPLE_TIME 628 * { u64 id; } && PERF_SAMPLE_ID 629 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID 630 * { u32 cpu, res; } && PERF_SAMPLE_CPU 631 * { u64 id; } && PERF_SAMPLE_IDENTIFIER 632 * } && perf_event_attr::sample_id_all 633 * 634 * Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. The 635 * advantage of PERF_SAMPLE_IDENTIFIER is that its position is fixed 636 * relative to header.size. 637 */ 638 639 /* 640 * The MMAP events record the PROT_EXEC mappings so that we can 641 * correlate userspace IPs to code. They have the following structure: 642 * 643 * struct { 644 * struct perf_event_header header; 645 * 646 * u32 pid, tid; 647 * u64 addr; 648 * u64 len; 649 * u64 pgoff; 650 * char filename[]; 651 * struct sample_id sample_id; 652 * }; 653 */ 654 PERF_RECORD_MMAP = 1, 655 656 /* 657 * struct { 658 * struct perf_event_header header; 659 * u64 id; 660 * u64 lost; 661 * struct sample_id sample_id; 662 * }; 663 */ 664 PERF_RECORD_LOST = 2, 665 666 /* 667 * struct { 668 * struct perf_event_header header; 669 * 670 * u32 pid, tid; 671 * char comm[]; 672 * struct sample_id sample_id; 673 * }; 674 */ 675 PERF_RECORD_COMM = 3, 676 677 /* 678 * struct { 679 * struct perf_event_header header; 680 * u32 pid, ppid; 681 * u32 tid, ptid; 682 * u64 time; 683 * struct sample_id sample_id; 684 * }; 685 */ 686 PERF_RECORD_EXIT = 4, 687 688 /* 689 * struct { 690 * struct perf_event_header header; 691 * u64 time; 692 * u64 id; 693 * u64 stream_id; 694 * struct sample_id sample_id; 695 * }; 696 */ 697 PERF_RECORD_THROTTLE = 5, 698 PERF_RECORD_UNTHROTTLE = 6, 699 700 /* 701 * struct { 702 * struct perf_event_header header; 703 * u32 pid, ppid; 704 * u32 tid, ptid; 705 * u64 time; 706 * struct sample_id sample_id; 707 * }; 708 */ 709 PERF_RECORD_FORK = 7, 710 711 /* 712 * struct { 713 * struct perf_event_header header; 714 * u32 pid, tid; 715 * 716 * struct read_format values; 717 * struct sample_id sample_id; 718 * }; 719 */ 720 PERF_RECORD_READ = 8, 721 722 /* 723 * struct { 724 * struct perf_event_header header; 725 * 726 * # 727 * # Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. 728 * # The advantage of PERF_SAMPLE_IDENTIFIER is that its position 729 * # is fixed relative to header. 730 * # 731 * 732 * { u64 id; } && PERF_SAMPLE_IDENTIFIER 733 * { u64 ip; } && PERF_SAMPLE_IP 734 * { u32 pid, tid; } && PERF_SAMPLE_TID 735 * { u64 time; } && PERF_SAMPLE_TIME 736 * { u64 addr; } && PERF_SAMPLE_ADDR 737 * { u64 id; } && PERF_SAMPLE_ID 738 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID 739 * { u32 cpu, res; } && PERF_SAMPLE_CPU 740 * { u64 period; } && PERF_SAMPLE_PERIOD 741 * 742 * { struct read_format values; } && PERF_SAMPLE_READ 743 * 744 * { u64 nr, 745 * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN 746 * 747 * # 748 * # The RAW record below is opaque data wrt the ABI 749 * # 750 * # That is, the ABI doesn't make any promises wrt to 751 * # the stability of its content, it may vary depending 752 * # on event, hardware, kernel version and phase of 753 * # the moon. 754 * # 755 * # In other words, PERF_SAMPLE_RAW contents are not an ABI. 756 * # 757 * 758 * { u32 size; 759 * char data[size];}&& PERF_SAMPLE_RAW 760 * 761 * { u64 nr; 762 * { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK 763 * 764 * { u64 abi; # enum perf_sample_regs_abi 765 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER 766 * 767 * { u64 size; 768 * char data[size]; 769 * u64 dyn_size; } && PERF_SAMPLE_STACK_USER 770 * 771 * { u64 weight; } && PERF_SAMPLE_WEIGHT 772 * { u64 data_src; } && PERF_SAMPLE_DATA_SRC 773 * { u64 transaction; } && PERF_SAMPLE_TRANSACTION 774 * { u64 abi; # enum perf_sample_regs_abi 775 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR 776 * }; 777 */ 778 PERF_RECORD_SAMPLE = 9, 779 780 /* 781 * The MMAP2 records are an augmented version of MMAP, they add 782 * maj, min, ino numbers to be used to uniquely identify each mapping 783 * 784 * struct { 785 * struct perf_event_header header; 786 * 787 * u32 pid, tid; 788 * u64 addr; 789 * u64 len; 790 * u64 pgoff; 791 * u32 maj; 792 * u32 min; 793 * u64 ino; 794 * u64 ino_generation; 795 * u32 prot, flags; 796 * char filename[]; 797 * struct sample_id sample_id; 798 * }; 799 */ 800 PERF_RECORD_MMAP2 = 10, 801 802 /* 803 * Records that new data landed in the AUX buffer part. 804 * 805 * struct { 806 * struct perf_event_header header; 807 * 808 * u64 aux_offset; 809 * u64 aux_size; 810 * u64 flags; 811 * struct sample_id sample_id; 812 * }; 813 */ 814 PERF_RECORD_AUX = 11, 815 816 /* 817 * Indicates that instruction trace has started 818 * 819 * struct { 820 * struct perf_event_header header; 821 * u32 pid; 822 * u32 tid; 823 * }; 824 */ 825 PERF_RECORD_ITRACE_START = 12, 826 827 /* 828 * Records the dropped/lost sample number. 829 * 830 * struct { 831 * struct perf_event_header header; 832 * 833 * u64 lost; 834 * struct sample_id sample_id; 835 * }; 836 */ 837 PERF_RECORD_LOST_SAMPLES = 13, 838 839 /* 840 * Records a context switch in or out (flagged by 841 * PERF_RECORD_MISC_SWITCH_OUT). See also 842 * PERF_RECORD_SWITCH_CPU_WIDE. 843 * 844 * struct { 845 * struct perf_event_header header; 846 * struct sample_id sample_id; 847 * }; 848 */ 849 PERF_RECORD_SWITCH = 14, 850 851 /* 852 * CPU-wide version of PERF_RECORD_SWITCH with next_prev_pid and 853 * next_prev_tid that are the next (switching out) or previous 854 * (switching in) pid/tid. 855 * 856 * struct { 857 * struct perf_event_header header; 858 * u32 next_prev_pid; 859 * u32 next_prev_tid; 860 * struct sample_id sample_id; 861 * }; 862 */ 863 PERF_RECORD_SWITCH_CPU_WIDE = 15, 864 865 PERF_RECORD_MAX, /* non-ABI */ 866 }; 867 868 #define PERF_MAX_STACK_DEPTH 127 869 #define PERF_MAX_CONTEXTS_PER_STACK 8 870 871 enum perf_callchain_context { 872 PERF_CONTEXT_HV = (__u64)-32, 873 PERF_CONTEXT_KERNEL = (__u64)-128, 874 PERF_CONTEXT_USER = (__u64)-512, 875 876 PERF_CONTEXT_GUEST = (__u64)-2048, 877 PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, 878 PERF_CONTEXT_GUEST_USER = (__u64)-2560, 879 880 PERF_CONTEXT_MAX = (__u64)-4095, 881 }; 882 883 /** 884 * PERF_RECORD_AUX::flags bits 885 */ 886 #define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ 887 #define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ 888 889 #define PERF_FLAG_FD_NO_GROUP (1UL << 0) 890 #define PERF_FLAG_FD_OUTPUT (1UL << 1) 891 #define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ 892 #define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ 893 894 union perf_mem_data_src { 895 __u64 val; 896 struct { 897 __u64 mem_op:5, /* type of opcode */ 898 mem_lvl:14, /* memory hierarchy level */ 899 mem_snoop:5, /* snoop mode */ 900 mem_lock:2, /* lock instr */ 901 mem_dtlb:7, /* tlb access */ 902 mem_rsvd:31; 903 }; 904 }; 905 906 /* type of opcode (load/store/prefetch,code) */ 907 #define PERF_MEM_OP_NA 0x01 /* not available */ 908 #define PERF_MEM_OP_LOAD 0x02 /* load instruction */ 909 #define PERF_MEM_OP_STORE 0x04 /* store instruction */ 910 #define PERF_MEM_OP_PFETCH 0x08 /* prefetch */ 911 #define PERF_MEM_OP_EXEC 0x10 /* code (execution) */ 912 #define PERF_MEM_OP_SHIFT 0 913 914 /* memory hierarchy (memory level, hit or miss) */ 915 #define PERF_MEM_LVL_NA 0x01 /* not available */ 916 #define PERF_MEM_LVL_HIT 0x02 /* hit level */ 917 #define PERF_MEM_LVL_MISS 0x04 /* miss level */ 918 #define PERF_MEM_LVL_L1 0x08 /* L1 */ 919 #define PERF_MEM_LVL_LFB 0x10 /* Line Fill Buffer */ 920 #define PERF_MEM_LVL_L2 0x20 /* L2 */ 921 #define PERF_MEM_LVL_L3 0x40 /* L3 */ 922 #define PERF_MEM_LVL_LOC_RAM 0x80 /* Local DRAM */ 923 #define PERF_MEM_LVL_REM_RAM1 0x100 /* Remote DRAM (1 hop) */ 924 #define PERF_MEM_LVL_REM_RAM2 0x200 /* Remote DRAM (2 hops) */ 925 #define PERF_MEM_LVL_REM_CCE1 0x400 /* Remote Cache (1 hop) */ 926 #define PERF_MEM_LVL_REM_CCE2 0x800 /* Remote Cache (2 hops) */ 927 #define PERF_MEM_LVL_IO 0x1000 /* I/O memory */ 928 #define PERF_MEM_LVL_UNC 0x2000 /* Uncached memory */ 929 #define PERF_MEM_LVL_SHIFT 5 930 931 /* snoop mode */ 932 #define PERF_MEM_SNOOP_NA 0x01 /* not available */ 933 #define PERF_MEM_SNOOP_NONE 0x02 /* no snoop */ 934 #define PERF_MEM_SNOOP_HIT 0x04 /* snoop hit */ 935 #define PERF_MEM_SNOOP_MISS 0x08 /* snoop miss */ 936 #define PERF_MEM_SNOOP_HITM 0x10 /* snoop hit modified */ 937 #define PERF_MEM_SNOOP_SHIFT 19 938 939 /* locked instruction */ 940 #define PERF_MEM_LOCK_NA 0x01 /* not available */ 941 #define PERF_MEM_LOCK_LOCKED 0x02 /* locked transaction */ 942 #define PERF_MEM_LOCK_SHIFT 24 943 944 /* TLB access */ 945 #define PERF_MEM_TLB_NA 0x01 /* not available */ 946 #define PERF_MEM_TLB_HIT 0x02 /* hit level */ 947 #define PERF_MEM_TLB_MISS 0x04 /* miss level */ 948 #define PERF_MEM_TLB_L1 0x08 /* L1 */ 949 #define PERF_MEM_TLB_L2 0x10 /* L2 */ 950 #define PERF_MEM_TLB_WK 0x20 /* Hardware Walker*/ 951 #define PERF_MEM_TLB_OS 0x40 /* OS fault handler */ 952 #define PERF_MEM_TLB_SHIFT 26 953 954 #define PERF_MEM_S(a, s) \ 955 (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT) 956 957 /* 958 * single taken branch record layout: 959 * 960 * from: source instruction (may not always be a branch insn) 961 * to: branch target 962 * mispred: branch target was mispredicted 963 * predicted: branch target was predicted 964 * 965 * support for mispred, predicted is optional. In case it 966 * is not supported mispred = predicted = 0. 967 * 968 * in_tx: running in a hardware transaction 969 * abort: aborting a hardware transaction 970 * cycles: cycles from last branch (or 0 if not supported) 971 */ 972 struct perf_branch_entry { 973 __u64 from; 974 __u64 to; 975 __u64 mispred:1, /* target mispredicted */ 976 predicted:1,/* target predicted */ 977 in_tx:1, /* in transaction */ 978 abort:1, /* transaction abort */ 979 cycles:16, /* cycle count to last branch */ 980 reserved:44; 981 }; 982 983 #endif /* _UAPI_LINUX_PERF_EVENT_H */ 984
