1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Performance events: 4 * 5 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> 6 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar 7 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra 8 * 9 * Data type definitions, declarations, prototypes. 10 * 11 * Started by: Thomas Gleixner and Ingo Molnar 12 * 13 * For licencing details see kernel-base/COPYING 14 */ 15 #ifndef _UAPI_LINUX_PERF_EVENT_H 16 #define _UAPI_LINUX_PERF_EVENT_H 17 18 #include <linux/types.h> 19 #include <linux/ioctl.h> 20 #include <asm/byteorder.h> 21 22 /* 23 * User-space ABI bits: 24 */ 25 26 /* 27 * attr.type 28 */ 29 enum perf_type_id { 30 PERF_TYPE_HARDWARE = 0, 31 PERF_TYPE_SOFTWARE = 1, 32 PERF_TYPE_TRACEPOINT = 2, 33 PERF_TYPE_HW_CACHE = 3, 34 PERF_TYPE_RAW = 4, 35 PERF_TYPE_BREAKPOINT = 5, 36 37 PERF_TYPE_MAX, /* non-ABI */ 38 }; 39 40 /* 41 * attr.config layout for type PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE 42 * PERF_TYPE_HARDWARE: 0xEEEEEEEE000000AA 43 * AA: hardware event ID 44 * EEEEEEEE: PMU type ID 45 * PERF_TYPE_HW_CACHE: 0xEEEEEEEE00DDCCBB 46 * BB: hardware cache ID 47 * CC: hardware cache op ID 48 * DD: hardware cache op result ID 49 * EEEEEEEE: PMU type ID 50 * If the PMU type ID is 0, the PERF_TYPE_RAW will be applied. 51 */ 52 #define PERF_PMU_TYPE_SHIFT 32 53 #define PERF_HW_EVENT_MASK 0xffffffff 54 55 /* 56 * Generalized performance event event_id types, used by the 57 * attr.event_id parameter of the sys_perf_event_open() 58 * syscall: 59 */ 60 enum perf_hw_id { 61 /* 62 * Common hardware events, generalized by the kernel: 63 */ 64 PERF_COUNT_HW_CPU_CYCLES = 0, 65 PERF_COUNT_HW_INSTRUCTIONS = 1, 66 PERF_COUNT_HW_CACHE_REFERENCES = 2, 67 PERF_COUNT_HW_CACHE_MISSES = 3, 68 PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, 69 PERF_COUNT_HW_BRANCH_MISSES = 5, 70 PERF_COUNT_HW_BUS_CYCLES = 6, 71 PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, 72 PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, 73 PERF_COUNT_HW_REF_CPU_CYCLES = 9, 74 75 PERF_COUNT_HW_MAX, /* non-ABI */ 76 }; 77 78 /* 79 * Generalized hardware cache events: 80 * 81 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x 82 * { read, write, prefetch } x 83 * { accesses, misses } 84 */ 85 enum perf_hw_cache_id { 86 PERF_COUNT_HW_CACHE_L1D = 0, 87 PERF_COUNT_HW_CACHE_L1I = 1, 88 PERF_COUNT_HW_CACHE_LL = 2, 89 PERF_COUNT_HW_CACHE_DTLB = 3, 90 PERF_COUNT_HW_CACHE_ITLB = 4, 91 PERF_COUNT_HW_CACHE_BPU = 5, 92 PERF_COUNT_HW_CACHE_NODE = 6, 93 94 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ 95 }; 96 97 enum perf_hw_cache_op_id { 98 PERF_COUNT_HW_CACHE_OP_READ = 0, 99 PERF_COUNT_HW_CACHE_OP_WRITE = 1, 100 PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, 101 102 PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ 103 }; 104 105 enum perf_hw_cache_op_result_id { 106 PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, 107 PERF_COUNT_HW_CACHE_RESULT_MISS = 1, 108 109 PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ 110 }; 111 112 /* 113 * Special "software" events provided by the kernel, even if the hardware 114 * does not support performance events. These events measure various 115 * physical and sw events of the kernel (and allow the profiling of them as 116 * well): 117 */ 118 enum perf_sw_ids { 119 PERF_COUNT_SW_CPU_CLOCK = 0, 120 PERF_COUNT_SW_TASK_CLOCK = 1, 121 PERF_COUNT_SW_PAGE_FAULTS = 2, 122 PERF_COUNT_SW_CONTEXT_SWITCHES = 3, 123 PERF_COUNT_SW_CPU_MIGRATIONS = 4, 124 PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, 125 PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, 126 PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, 127 PERF_COUNT_SW_EMULATION_FAULTS = 8, 128 PERF_COUNT_SW_DUMMY = 9, 129 PERF_COUNT_SW_BPF_OUTPUT = 10, 130 PERF_COUNT_SW_CGROUP_SWITCHES = 11, 131 132 PERF_COUNT_SW_MAX, /* non-ABI */ 133 }; 134 135 /* 136 * Bits that can be set in attr.sample_type to request information 137 * in the overflow packets. 138 */ 139 enum perf_event_sample_format { 140 PERF_SAMPLE_IP = 1U << 0, 141 PERF_SAMPLE_TID = 1U << 1, 142 PERF_SAMPLE_TIME = 1U << 2, 143 PERF_SAMPLE_ADDR = 1U << 3, 144 PERF_SAMPLE_READ = 1U << 4, 145 PERF_SAMPLE_CALLCHAIN = 1U << 5, 146 PERF_SAMPLE_ID = 1U << 6, 147 PERF_SAMPLE_CPU = 1U << 7, 148 PERF_SAMPLE_PERIOD = 1U << 8, 149 PERF_SAMPLE_STREAM_ID = 1U << 9, 150 PERF_SAMPLE_RAW = 1U << 10, 151 PERF_SAMPLE_BRANCH_STACK = 1U << 11, 152 PERF_SAMPLE_REGS_USER = 1U << 12, 153 PERF_SAMPLE_STACK_USER = 1U << 13, 154 PERF_SAMPLE_WEIGHT = 1U << 14, 155 PERF_SAMPLE_DATA_SRC = 1U << 15, 156 PERF_SAMPLE_IDENTIFIER = 1U << 16, 157 PERF_SAMPLE_TRANSACTION = 1U << 17, 158 PERF_SAMPLE_REGS_INTR = 1U << 18, 159 PERF_SAMPLE_PHYS_ADDR = 1U << 19, 160 PERF_SAMPLE_AUX = 1U << 20, 161 PERF_SAMPLE_CGROUP = 1U << 21, 162 PERF_SAMPLE_DATA_PAGE_SIZE = 1U << 22, 163 PERF_SAMPLE_CODE_PAGE_SIZE = 1U << 23, 164 PERF_SAMPLE_WEIGHT_STRUCT = 1U << 24, 165 166 PERF_SAMPLE_MAX = 1U << 25, /* non-ABI */ 167 }; 168 169 #define PERF_SAMPLE_WEIGHT_TYPE (PERF_SAMPLE_WEIGHT | PERF_SAMPLE_WEIGHT_STRUCT) 170 /* 171 * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set 172 * 173 * If the user does not pass priv level information via branch_sample_type, 174 * the kernel uses the event's priv level. Branch and event priv levels do 175 * not have to match. Branch priv level is checked for permissions. 176 * 177 * The branch types can be combined, however BRANCH_ANY covers all types 178 * of branches and therefore it supersedes all the other types. 179 */ 180 enum perf_branch_sample_type_shift { 181 PERF_SAMPLE_BRANCH_USER_SHIFT = 0, /* user branches */ 182 PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1, /* kernel branches */ 183 PERF_SAMPLE_BRANCH_HV_SHIFT = 2, /* hypervisor branches */ 184 185 PERF_SAMPLE_BRANCH_ANY_SHIFT = 3, /* any branch types */ 186 PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT = 4, /* any call branch */ 187 PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT = 5, /* any return branch */ 188 PERF_SAMPLE_BRANCH_IND_CALL_SHIFT = 6, /* indirect calls */ 189 PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT = 7, /* transaction aborts */ 190 PERF_SAMPLE_BRANCH_IN_TX_SHIFT = 8, /* in transaction */ 191 PERF_SAMPLE_BRANCH_NO_TX_SHIFT = 9, /* not in transaction */ 192 PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */ 193 194 PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */ 195 PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT = 12, /* indirect jumps */ 196 PERF_SAMPLE_BRANCH_CALL_SHIFT = 13, /* direct call */ 197 198 PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT = 14, /* no flags */ 199 PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT = 15, /* no cycles */ 200 201 PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT = 16, /* save branch type */ 202 203 PERF_SAMPLE_BRANCH_HW_INDEX_SHIFT = 17, /* save low level index of raw branch records */ 204 205 PERF_SAMPLE_BRANCH_PRIV_SAVE_SHIFT = 18, /* save privilege mode */ 206 207 PERF_SAMPLE_BRANCH_COUNTERS_SHIFT = 19, /* save occurrences of events on a branch */ 208 209 PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */ 210 }; 211 212 enum perf_branch_sample_type { 213 PERF_SAMPLE_BRANCH_USER = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT, 214 PERF_SAMPLE_BRANCH_KERNEL = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT, 215 PERF_SAMPLE_BRANCH_HV = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT, 216 217 PERF_SAMPLE_BRANCH_ANY = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT, 218 PERF_SAMPLE_BRANCH_ANY_CALL = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT, 219 PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT, 220 PERF_SAMPLE_BRANCH_IND_CALL = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT, 221 PERF_SAMPLE_BRANCH_ABORT_TX = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT, 222 PERF_SAMPLE_BRANCH_IN_TX = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT, 223 PERF_SAMPLE_BRANCH_NO_TX = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT, 224 PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT, 225 226 PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT, 227 PERF_SAMPLE_BRANCH_IND_JUMP = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT, 228 PERF_SAMPLE_BRANCH_CALL = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT, 229 230 PERF_SAMPLE_BRANCH_NO_FLAGS = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT, 231 PERF_SAMPLE_BRANCH_NO_CYCLES = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT, 232 233 PERF_SAMPLE_BRANCH_TYPE_SAVE = 234 1U << PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT, 235 236 PERF_SAMPLE_BRANCH_HW_INDEX = 1U << PERF_SAMPLE_BRANCH_HW_INDEX_SHIFT, 237 238 PERF_SAMPLE_BRANCH_PRIV_SAVE = 1U << PERF_SAMPLE_BRANCH_PRIV_SAVE_SHIFT, 239 240 PERF_SAMPLE_BRANCH_COUNTERS = 1U << PERF_SAMPLE_BRANCH_COUNTERS_SHIFT, 241 242 PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT, 243 }; 244 245 /* 246 * Common flow change classification 247 */ 248 enum { 249 PERF_BR_UNKNOWN = 0, /* unknown */ 250 PERF_BR_COND = 1, /* conditional */ 251 PERF_BR_UNCOND = 2, /* unconditional */ 252 PERF_BR_IND = 3, /* indirect */ 253 PERF_BR_CALL = 4, /* function call */ 254 PERF_BR_IND_CALL = 5, /* indirect function call */ 255 PERF_BR_RET = 6, /* function return */ 256 PERF_BR_SYSCALL = 7, /* syscall */ 257 PERF_BR_SYSRET = 8, /* syscall return */ 258 PERF_BR_COND_CALL = 9, /* conditional function call */ 259 PERF_BR_COND_RET = 10, /* conditional function return */ 260 PERF_BR_ERET = 11, /* exception return */ 261 PERF_BR_IRQ = 12, /* irq */ 262 PERF_BR_SERROR = 13, /* system error */ 263 PERF_BR_NO_TX = 14, /* not in transaction */ 264 PERF_BR_EXTEND_ABI = 15, /* extend ABI */ 265 PERF_BR_MAX, 266 }; 267 268 /* 269 * Common branch speculation outcome classification 270 */ 271 enum { 272 PERF_BR_SPEC_NA = 0, /* Not available */ 273 PERF_BR_SPEC_WRONG_PATH = 1, /* Speculative but on wrong path */ 274 PERF_BR_NON_SPEC_CORRECT_PATH = 2, /* Non-speculative but on correct path */ 275 PERF_BR_SPEC_CORRECT_PATH = 3, /* Speculative and on correct path */ 276 PERF_BR_SPEC_MAX, 277 }; 278 279 enum { 280 PERF_BR_NEW_FAULT_ALGN = 0, /* Alignment fault */ 281 PERF_BR_NEW_FAULT_DATA = 1, /* Data fault */ 282 PERF_BR_NEW_FAULT_INST = 2, /* Inst fault */ 283 PERF_BR_NEW_ARCH_1 = 3, /* Architecture specific */ 284 PERF_BR_NEW_ARCH_2 = 4, /* Architecture specific */ 285 PERF_BR_NEW_ARCH_3 = 5, /* Architecture specific */ 286 PERF_BR_NEW_ARCH_4 = 6, /* Architecture specific */ 287 PERF_BR_NEW_ARCH_5 = 7, /* Architecture specific */ 288 PERF_BR_NEW_MAX, 289 }; 290 291 enum { 292 PERF_BR_PRIV_UNKNOWN = 0, 293 PERF_BR_PRIV_USER = 1, 294 PERF_BR_PRIV_KERNEL = 2, 295 PERF_BR_PRIV_HV = 3, 296 }; 297 298 #define PERF_BR_ARM64_FIQ PERF_BR_NEW_ARCH_1 299 #define PERF_BR_ARM64_DEBUG_HALT PERF_BR_NEW_ARCH_2 300 #define PERF_BR_ARM64_DEBUG_EXIT PERF_BR_NEW_ARCH_3 301 #define PERF_BR_ARM64_DEBUG_INST PERF_BR_NEW_ARCH_4 302 #define PERF_BR_ARM64_DEBUG_DATA PERF_BR_NEW_ARCH_5 303 304 #define PERF_SAMPLE_BRANCH_PLM_ALL \ 305 (PERF_SAMPLE_BRANCH_USER|\ 306 PERF_SAMPLE_BRANCH_KERNEL|\ 307 PERF_SAMPLE_BRANCH_HV) 308 309 /* 310 * Values to determine ABI of the registers dump. 311 */ 312 enum perf_sample_regs_abi { 313 PERF_SAMPLE_REGS_ABI_NONE = 0, 314 PERF_SAMPLE_REGS_ABI_32 = 1, 315 PERF_SAMPLE_REGS_ABI_64 = 2, 316 }; 317 318 /* 319 * Values for the memory transaction event qualifier, mostly for 320 * abort events. Multiple bits can be set. 321 */ 322 enum { 323 PERF_TXN_ELISION = (1 << 0), /* From elision */ 324 PERF_TXN_TRANSACTION = (1 << 1), /* From transaction */ 325 PERF_TXN_SYNC = (1 << 2), /* Instruction is related */ 326 PERF_TXN_ASYNC = (1 << 3), /* Instruction not related */ 327 PERF_TXN_RETRY = (1 << 4), /* Retry possible */ 328 PERF_TXN_CONFLICT = (1 << 5), /* Conflict abort */ 329 PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */ 330 PERF_TXN_CAPACITY_READ = (1 << 7), /* Capacity read abort */ 331 332 PERF_TXN_MAX = (1 << 8), /* non-ABI */ 333 334 /* bits 32..63 are reserved for the abort code */ 335 336 PERF_TXN_ABORT_MASK = (0xffffffffULL << 32), 337 PERF_TXN_ABORT_SHIFT = 32, 338 }; 339 340 /* 341 * The format of the data returned by read() on a perf event fd, 342 * as specified by attr.read_format: 343 * 344 * struct read_format { 345 * { u64 value; 346 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED 347 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING 348 * { u64 id; } && PERF_FORMAT_ID 349 * { u64 lost; } && PERF_FORMAT_LOST 350 * } && !PERF_FORMAT_GROUP 351 * 352 * { u64 nr; 353 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED 354 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING 355 * { u64 value; 356 * { u64 id; } && PERF_FORMAT_ID 357 * { u64 lost; } && PERF_FORMAT_LOST 358 * } cntr[nr]; 359 * } && PERF_FORMAT_GROUP 360 * }; 361 */ 362 enum perf_event_read_format { 363 PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, 364 PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, 365 PERF_FORMAT_ID = 1U << 2, 366 PERF_FORMAT_GROUP = 1U << 3, 367 PERF_FORMAT_LOST = 1U << 4, 368 369 PERF_FORMAT_MAX = 1U << 5, /* non-ABI */ 370 }; 371 372 #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ 373 #define PERF_ATTR_SIZE_VER1 72 /* add: config2 */ 374 #define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */ 375 #define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */ 376 /* add: sample_stack_user */ 377 #define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */ 378 #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */ 379 #define PERF_ATTR_SIZE_VER6 120 /* add: aux_sample_size */ 380 #define PERF_ATTR_SIZE_VER7 128 /* add: sig_data */ 381 #define PERF_ATTR_SIZE_VER8 136 /* add: config3 */ 382 383 /* 384 * Hardware event_id to monitor via a performance monitoring event: 385 * 386 * @sample_max_stack: Max number of frame pointers in a callchain, 387 * should be < /proc/sys/kernel/perf_event_max_stack 388 */ 389 struct perf_event_attr { 390 391 /* 392 * Major type: hardware/software/tracepoint/etc. 393 */ 394 __u32 type; 395 396 /* 397 * Size of the attr structure, for fwd/bwd compat. 398 */ 399 __u32 size; 400 401 /* 402 * Type specific configuration information. 403 */ 404 __u64 config; 405 406 union { 407 __u64 sample_period; 408 __u64 sample_freq; 409 }; 410 411 __u64 sample_type; 412 __u64 read_format; 413 414 __u64 disabled : 1, /* off by default */ 415 inherit : 1, /* children inherit it */ 416 pinned : 1, /* must always be on PMU */ 417 exclusive : 1, /* only group on PMU */ 418 exclude_user : 1, /* don't count user */ 419 exclude_kernel : 1, /* ditto kernel */ 420 exclude_hv : 1, /* ditto hypervisor */ 421 exclude_idle : 1, /* don't count when idle */ 422 mmap : 1, /* include mmap data */ 423 comm : 1, /* include comm data */ 424 freq : 1, /* use freq, not period */ 425 inherit_stat : 1, /* per task counts */ 426 enable_on_exec : 1, /* next exec enables */ 427 task : 1, /* trace fork/exit */ 428 watermark : 1, /* wakeup_watermark */ 429 /* 430 * precise_ip: 431 * 432 * 0 - SAMPLE_IP can have arbitrary skid 433 * 1 - SAMPLE_IP must have constant skid 434 * 2 - SAMPLE_IP requested to have 0 skid 435 * 3 - SAMPLE_IP must have 0 skid 436 * 437 * See also PERF_RECORD_MISC_EXACT_IP 438 */ 439 precise_ip : 2, /* skid constraint */ 440 mmap_data : 1, /* non-exec mmap data */ 441 sample_id_all : 1, /* sample_type all events */ 442 443 exclude_host : 1, /* don't count in host */ 444 exclude_guest : 1, /* don't count in guest */ 445 446 exclude_callchain_kernel : 1, /* exclude kernel callchains */ 447 exclude_callchain_user : 1, /* exclude user callchains */ 448 mmap2 : 1, /* include mmap with inode data */ 449 comm_exec : 1, /* flag comm events that are due to an exec */ 450 use_clockid : 1, /* use @clockid for time fields */ 451 context_switch : 1, /* context switch data */ 452 write_backward : 1, /* Write ring buffer from end to beginning */ 453 namespaces : 1, /* include namespaces data */ 454 ksymbol : 1, /* include ksymbol events */ 455 bpf_event : 1, /* include bpf events */ 456 aux_output : 1, /* generate AUX records instead of events */ 457 cgroup : 1, /* include cgroup events */ 458 text_poke : 1, /* include text poke events */ 459 build_id : 1, /* use build id in mmap2 events */ 460 inherit_thread : 1, /* children only inherit if cloned with CLONE_THREAD */ 461 remove_on_exec : 1, /* event is removed from task on exec */ 462 sigtrap : 1, /* send synchronous SIGTRAP on event */ 463 __reserved_1 : 26; 464 465 union { 466 __u32 wakeup_events; /* wakeup every n events */ 467 __u32 wakeup_watermark; /* bytes before wakeup */ 468 }; 469 470 __u32 bp_type; 471 union { 472 __u64 bp_addr; 473 __u64 kprobe_func; /* for perf_kprobe */ 474 __u64 uprobe_path; /* for perf_uprobe */ 475 __u64 config1; /* extension of config */ 476 }; 477 union { 478 __u64 bp_len; 479 __u64 kprobe_addr; /* when kprobe_func == NULL */ 480 __u64 probe_offset; /* for perf_[k,u]probe */ 481 __u64 config2; /* extension of config1 */ 482 }; 483 __u64 branch_sample_type; /* enum perf_branch_sample_type */ 484 485 /* 486 * Defines set of user regs to dump on samples. 487 * See asm/perf_regs.h for details. 488 */ 489 __u64 sample_regs_user; 490 491 /* 492 * Defines size of the user stack to dump on samples. 493 */ 494 __u32 sample_stack_user; 495 496 __s32 clockid; 497 /* 498 * Defines set of regs to dump for each sample 499 * state captured on: 500 * - precise = 0: PMU interrupt 501 * - precise > 0: sampled instruction 502 * 503 * See asm/perf_regs.h for details. 504 */ 505 __u64 sample_regs_intr; 506 507 /* 508 * Wakeup watermark for AUX area 509 */ 510 __u32 aux_watermark; 511 __u16 sample_max_stack; 512 __u16 __reserved_2; 513 __u32 aux_sample_size; 514 __u32 __reserved_3; 515 516 /* 517 * User provided data if sigtrap=1, passed back to user via 518 * siginfo_t::si_perf_data, e.g. to permit user to identify the event. 519 * Note, siginfo_t::si_perf_data is long-sized, and sig_data will be 520 * truncated accordingly on 32 bit architectures. 521 */ 522 __u64 sig_data; 523 524 __u64 config3; /* extension of config2 */ 525 }; 526 527 /* 528 * Structure used by below PERF_EVENT_IOC_QUERY_BPF command 529 * to query bpf programs attached to the same perf tracepoint 530 * as the given perf event. 531 */ 532 struct perf_event_query_bpf { 533 /* 534 * The below ids array length 535 */ 536 __u32 ids_len; 537 /* 538 * Set by the kernel to indicate the number of 539 * available programs 540 */ 541 __u32 prog_cnt; 542 /* 543 * User provided buffer to store program ids 544 */ 545 __u32 ids[]; 546 }; 547 548 /* 549 * Ioctls that can be done on a perf event fd: 550 */ 551 #define PERF_EVENT_IOC_ENABLE _IO ('$', 0) 552 #define PERF_EVENT_IOC_DISABLE _IO ('$', 1) 553 #define PERF_EVENT_IOC_REFRESH _IO ('$', 2) 554 #define PERF_EVENT_IOC_RESET _IO ('$', 3) 555 #define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64) 556 #define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5) 557 #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *) 558 #define PERF_EVENT_IOC_ID _IOR('$', 7, __u64 *) 559 #define PERF_EVENT_IOC_SET_BPF _IOW('$', 8, __u32) 560 #define PERF_EVENT_IOC_PAUSE_OUTPUT _IOW('$', 9, __u32) 561 #define PERF_EVENT_IOC_QUERY_BPF _IOWR('$', 10, struct perf_event_query_bpf *) 562 #define PERF_EVENT_IOC_MODIFY_ATTRIBUTES _IOW('$', 11, struct perf_event_attr *) 563 564 enum perf_event_ioc_flags { 565 PERF_IOC_FLAG_GROUP = 1U << 0, 566 }; 567 568 /* 569 * Structure of the page that can be mapped via mmap 570 */ 571 struct perf_event_mmap_page { 572 __u32 version; /* version number of this structure */ 573 __u32 compat_version; /* lowest version this is compat with */ 574 575 /* 576 * Bits needed to read the hw events in user-space. 577 * 578 * u32 seq, time_mult, time_shift, index, width; 579 * u64 count, enabled, running; 580 * u64 cyc, time_offset; 581 * s64 pmc = 0; 582 * 583 * do { 584 * seq = pc->lock; 585 * barrier() 586 * 587 * enabled = pc->time_enabled; 588 * running = pc->time_running; 589 * 590 * if (pc->cap_usr_time && enabled != running) { 591 * cyc = rdtsc(); 592 * time_offset = pc->time_offset; 593 * time_mult = pc->time_mult; 594 * time_shift = pc->time_shift; 595 * } 596 * 597 * index = pc->index; 598 * count = pc->offset; 599 * if (pc->cap_user_rdpmc && index) { 600 * width = pc->pmc_width; 601 * pmc = rdpmc(index - 1); 602 * } 603 * 604 * barrier(); 605 * } while (pc->lock != seq); 606 * 607 * NOTE: for obvious reason this only works on self-monitoring 608 * processes. 609 */ 610 __u32 lock; /* seqlock for synchronization */ 611 __u32 index; /* hardware event identifier */ 612 __s64 offset; /* add to hardware event value */ 613 __u64 time_enabled; /* time event active */ 614 __u64 time_running; /* time event on cpu */ 615 union { 616 __u64 capabilities; 617 struct { 618 __u64 cap_bit0 : 1, /* Always 0, deprecated, see commit 860f085b74e9 */ 619 cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */ 620 621 cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ 622 cap_user_time : 1, /* The time_{shift,mult,offset} fields are used */ 623 cap_user_time_zero : 1, /* The time_zero field is used */ 624 cap_user_time_short : 1, /* the time_{cycle,mask} fields are used */ 625 cap_____res : 58; 626 }; 627 }; 628 629 /* 630 * If cap_user_rdpmc this field provides the bit-width of the value 631 * read using the rdpmc() or equivalent instruction. This can be used 632 * to sign extend the result like: 633 * 634 * pmc <<= 64 - width; 635 * pmc >>= 64 - width; // signed shift right 636 * count += pmc; 637 */ 638 __u16 pmc_width; 639 640 /* 641 * If cap_usr_time the below fields can be used to compute the time 642 * delta since time_enabled (in ns) using rdtsc or similar. 643 * 644 * u64 quot, rem; 645 * u64 delta; 646 * 647 * quot = (cyc >> time_shift); 648 * rem = cyc & (((u64)1 << time_shift) - 1); 649 * delta = time_offset + quot * time_mult + 650 * ((rem * time_mult) >> time_shift); 651 * 652 * Where time_offset,time_mult,time_shift and cyc are read in the 653 * seqcount loop described above. This delta can then be added to 654 * enabled and possible running (if index), improving the scaling: 655 * 656 * enabled += delta; 657 * if (index) 658 * running += delta; 659 * 660 * quot = count / running; 661 * rem = count % running; 662 * count = quot * enabled + (rem * enabled) / running; 663 */ 664 __u16 time_shift; 665 __u32 time_mult; 666 __u64 time_offset; 667 /* 668 * If cap_usr_time_zero, the hardware clock (e.g. TSC) can be calculated 669 * from sample timestamps. 670 * 671 * time = timestamp - time_zero; 672 * quot = time / time_mult; 673 * rem = time % time_mult; 674 * cyc = (quot << time_shift) + (rem << time_shift) / time_mult; 675 * 676 * And vice versa: 677 * 678 * quot = cyc >> time_shift; 679 * rem = cyc & (((u64)1 << time_shift) - 1); 680 * timestamp = time_zero + quot * time_mult + 681 * ((rem * time_mult) >> time_shift); 682 */ 683 __u64 time_zero; 684 685 __u32 size; /* Header size up to __reserved[] fields. */ 686 __u32 __reserved_1; 687 688 /* 689 * If cap_usr_time_short, the hardware clock is less than 64bit wide 690 * and we must compute the 'cyc' value, as used by cap_usr_time, as: 691 * 692 * cyc = time_cycles + ((cyc - time_cycles) & time_mask) 693 * 694 * NOTE: this form is explicitly chosen such that cap_usr_time_short 695 * is a correction on top of cap_usr_time, and code that doesn't 696 * know about cap_usr_time_short still works under the assumption 697 * the counter doesn't wrap. 698 */ 699 __u64 time_cycles; 700 __u64 time_mask; 701 702 /* 703 * Hole for extension of the self monitor capabilities 704 */ 705 706 __u8 __reserved[116*8]; /* align to 1k. */ 707 708 /* 709 * Control data for the mmap() data buffer. 710 * 711 * User-space reading the @data_head value should issue an smp_rmb(), 712 * after reading this value. 713 * 714 * When the mapping is PROT_WRITE the @data_tail value should be 715 * written by userspace to reflect the last read data, after issueing 716 * an smp_mb() to separate the data read from the ->data_tail store. 717 * In this case the kernel will not over-write unread data. 718 * 719 * See perf_output_put_handle() for the data ordering. 720 * 721 * data_{offset,size} indicate the location and size of the perf record 722 * buffer within the mmapped area. 723 */ 724 __u64 data_head; /* head in the data section */ 725 __u64 data_tail; /* user-space written tail */ 726 __u64 data_offset; /* where the buffer starts */ 727 __u64 data_size; /* data buffer size */ 728 729 /* 730 * AUX area is defined by aux_{offset,size} fields that should be set 731 * by the userspace, so that 732 * 733 * aux_offset >= data_offset + data_size 734 * 735 * prior to mmap()ing it. Size of the mmap()ed area should be aux_size. 736 * 737 * Ring buffer pointers aux_{head,tail} have the same semantics as 738 * data_{head,tail} and same ordering rules apply. 739 */ 740 __u64 aux_head; 741 __u64 aux_tail; 742 __u64 aux_offset; 743 __u64 aux_size; 744 }; 745 746 /* 747 * The current state of perf_event_header::misc bits usage: 748 * ('|' used bit, '-' unused bit) 749 * 750 * 012 CDEF 751 * |||---------|||| 752 * 753 * Where: 754 * 0-2 CPUMODE_MASK 755 * 756 * C PROC_MAP_PARSE_TIMEOUT 757 * D MMAP_DATA / COMM_EXEC / FORK_EXEC / SWITCH_OUT 758 * E MMAP_BUILD_ID / EXACT_IP / SCHED_OUT_PREEMPT 759 * F (reserved) 760 */ 761 762 #define PERF_RECORD_MISC_CPUMODE_MASK (7 << 0) 763 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0) 764 #define PERF_RECORD_MISC_KERNEL (1 << 0) 765 #define PERF_RECORD_MISC_USER (2 << 0) 766 #define PERF_RECORD_MISC_HYPERVISOR (3 << 0) 767 #define PERF_RECORD_MISC_GUEST_KERNEL (4 << 0) 768 #define PERF_RECORD_MISC_GUEST_USER (5 << 0) 769 770 /* 771 * Indicates that /proc/PID/maps parsing are truncated by time out. 772 */ 773 #define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT (1 << 12) 774 /* 775 * Following PERF_RECORD_MISC_* are used on different 776 * events, so can reuse the same bit position: 777 * 778 * PERF_RECORD_MISC_MMAP_DATA - PERF_RECORD_MMAP* events 779 * PERF_RECORD_MISC_COMM_EXEC - PERF_RECORD_COMM event 780 * PERF_RECORD_MISC_FORK_EXEC - PERF_RECORD_FORK event (perf internal) 781 * PERF_RECORD_MISC_SWITCH_OUT - PERF_RECORD_SWITCH* events 782 */ 783 #define PERF_RECORD_MISC_MMAP_DATA (1 << 13) 784 #define PERF_RECORD_MISC_COMM_EXEC (1 << 13) 785 #define PERF_RECORD_MISC_FORK_EXEC (1 << 13) 786 #define PERF_RECORD_MISC_SWITCH_OUT (1 << 13) 787 /* 788 * These PERF_RECORD_MISC_* flags below are safely reused 789 * for the following events: 790 * 791 * PERF_RECORD_MISC_EXACT_IP - PERF_RECORD_SAMPLE of precise events 792 * PERF_RECORD_MISC_SWITCH_OUT_PREEMPT - PERF_RECORD_SWITCH* events 793 * PERF_RECORD_MISC_MMAP_BUILD_ID - PERF_RECORD_MMAP2 event 794 * 795 * 796 * PERF_RECORD_MISC_EXACT_IP: 797 * Indicates that the content of PERF_SAMPLE_IP points to 798 * the actual instruction that triggered the event. See also 799 * perf_event_attr::precise_ip. 800 * 801 * PERF_RECORD_MISC_SWITCH_OUT_PREEMPT: 802 * Indicates that thread was preempted in TASK_RUNNING state. 803 * 804 * PERF_RECORD_MISC_MMAP_BUILD_ID: 805 * Indicates that mmap2 event carries build id data. 806 */ 807 #define PERF_RECORD_MISC_EXACT_IP (1 << 14) 808 #define PERF_RECORD_MISC_SWITCH_OUT_PREEMPT (1 << 14) 809 #define PERF_RECORD_MISC_MMAP_BUILD_ID (1 << 14) 810 /* 811 * Reserve the last bit to indicate some extended misc field 812 */ 813 #define PERF_RECORD_MISC_EXT_RESERVED (1 << 15) 814 815 struct perf_event_header { 816 __u32 type; 817 __u16 misc; 818 __u16 size; 819 }; 820 821 struct perf_ns_link_info { 822 __u64 dev; 823 __u64 ino; 824 }; 825 826 enum { 827 NET_NS_INDEX = 0, 828 UTS_NS_INDEX = 1, 829 IPC_NS_INDEX = 2, 830 PID_NS_INDEX = 3, 831 USER_NS_INDEX = 4, 832 MNT_NS_INDEX = 5, 833 CGROUP_NS_INDEX = 6, 834 835 NR_NAMESPACES, /* number of available namespaces */ 836 }; 837 838 enum perf_event_type { 839 840 /* 841 * If perf_event_attr.sample_id_all is set then all event types will 842 * have the sample_type selected fields related to where/when 843 * (identity) an event took place (TID, TIME, ID, STREAM_ID, CPU, 844 * IDENTIFIER) described in PERF_RECORD_SAMPLE below, it will be stashed 845 * just after the perf_event_header and the fields already present for 846 * the existing fields, i.e. at the end of the payload. That way a newer 847 * perf.data file will be supported by older perf tools, with these new 848 * optional fields being ignored. 849 * 850 * struct sample_id { 851 * { u32 pid, tid; } && PERF_SAMPLE_TID 852 * { u64 time; } && PERF_SAMPLE_TIME 853 * { u64 id; } && PERF_SAMPLE_ID 854 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID 855 * { u32 cpu, res; } && PERF_SAMPLE_CPU 856 * { u64 id; } && PERF_SAMPLE_IDENTIFIER 857 * } && perf_event_attr::sample_id_all 858 * 859 * Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. The 860 * advantage of PERF_SAMPLE_IDENTIFIER is that its position is fixed 861 * relative to header.size. 862 */ 863 864 /* 865 * The MMAP events record the PROT_EXEC mappings so that we can 866 * correlate userspace IPs to code. They have the following structure: 867 * 868 * struct { 869 * struct perf_event_header header; 870 * 871 * u32 pid, tid; 872 * u64 addr; 873 * u64 len; 874 * u64 pgoff; 875 * char filename[]; 876 * struct sample_id sample_id; 877 * }; 878 */ 879 PERF_RECORD_MMAP = 1, 880 881 /* 882 * struct { 883 * struct perf_event_header header; 884 * u64 id; 885 * u64 lost; 886 * struct sample_id sample_id; 887 * }; 888 */ 889 PERF_RECORD_LOST = 2, 890 891 /* 892 * struct { 893 * struct perf_event_header header; 894 * 895 * u32 pid, tid; 896 * char comm[]; 897 * struct sample_id sample_id; 898 * }; 899 */ 900 PERF_RECORD_COMM = 3, 901 902 /* 903 * struct { 904 * struct perf_event_header header; 905 * u32 pid, ppid; 906 * u32 tid, ptid; 907 * u64 time; 908 * struct sample_id sample_id; 909 * }; 910 */ 911 PERF_RECORD_EXIT = 4, 912 913 /* 914 * struct { 915 * struct perf_event_header header; 916 * u64 time; 917 * u64 id; 918 * u64 stream_id; 919 * struct sample_id sample_id; 920 * }; 921 */ 922 PERF_RECORD_THROTTLE = 5, 923 PERF_RECORD_UNTHROTTLE = 6, 924 925 /* 926 * struct { 927 * struct perf_event_header header; 928 * u32 pid, ppid; 929 * u32 tid, ptid; 930 * u64 time; 931 * struct sample_id sample_id; 932 * }; 933 */ 934 PERF_RECORD_FORK = 7, 935 936 /* 937 * struct { 938 * struct perf_event_header header; 939 * u32 pid, tid; 940 * 941 * struct read_format values; 942 * struct sample_id sample_id; 943 * }; 944 */ 945 PERF_RECORD_READ = 8, 946 947 /* 948 * struct { 949 * struct perf_event_header header; 950 * 951 * # 952 * # Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. 953 * # The advantage of PERF_SAMPLE_IDENTIFIER is that its position 954 * # is fixed relative to header. 955 * # 956 * 957 * { u64 id; } && PERF_SAMPLE_IDENTIFIER 958 * { u64 ip; } && PERF_SAMPLE_IP 959 * { u32 pid, tid; } && PERF_SAMPLE_TID 960 * { u64 time; } && PERF_SAMPLE_TIME 961 * { u64 addr; } && PERF_SAMPLE_ADDR 962 * { u64 id; } && PERF_SAMPLE_ID 963 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID 964 * { u32 cpu, res; } && PERF_SAMPLE_CPU 965 * { u64 period; } && PERF_SAMPLE_PERIOD 966 * 967 * { struct read_format values; } && PERF_SAMPLE_READ 968 * 969 * { u64 nr, 970 * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN 971 * 972 * # 973 * # The RAW record below is opaque data wrt the ABI 974 * # 975 * # That is, the ABI doesn't make any promises wrt to 976 * # the stability of its content, it may vary depending 977 * # on event, hardware, kernel version and phase of 978 * # the moon. 979 * # 980 * # In other words, PERF_SAMPLE_RAW contents are not an ABI. 981 * # 982 * 983 * { u32 size; 984 * char data[size];}&& PERF_SAMPLE_RAW 985 * 986 * { u64 nr; 987 * { u64 hw_idx; } && PERF_SAMPLE_BRANCH_HW_INDEX 988 * { u64 from, to, flags } lbr[nr]; 989 * # 990 * # The format of the counters is decided by the 991 * # "branch_counter_nr" and "branch_counter_width", 992 * # which are defined in the ABI. 993 * # 994 * { u64 counters; } cntr[nr] && PERF_SAMPLE_BRANCH_COUNTERS 995 * } && PERF_SAMPLE_BRANCH_STACK 996 * 997 * { u64 abi; # enum perf_sample_regs_abi 998 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER 999 * 1000 * { u64 size; 1001 * char data[size]; 1002 * u64 dyn_size; } && PERF_SAMPLE_STACK_USER 1003 * 1004 * { union perf_sample_weight 1005 * { 1006 * u64 full; && PERF_SAMPLE_WEIGHT 1007 * #if defined(__LITTLE_ENDIAN_BITFIELD) 1008 * struct { 1009 * u32 var1_dw; 1010 * u16 var2_w; 1011 * u16 var3_w; 1012 * } && PERF_SAMPLE_WEIGHT_STRUCT 1013 * #elif defined(__BIG_ENDIAN_BITFIELD) 1014 * struct { 1015 * u16 var3_w; 1016 * u16 var2_w; 1017 * u32 var1_dw; 1018 * } && PERF_SAMPLE_WEIGHT_STRUCT 1019 * #endif 1020 * } 1021 * } 1022 * { u64 data_src; } && PERF_SAMPLE_DATA_SRC 1023 * { u64 transaction; } && PERF_SAMPLE_TRANSACTION 1024 * { u64 abi; # enum perf_sample_regs_abi 1025 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR 1026 * { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR 1027 * { u64 size; 1028 * char data[size]; } && PERF_SAMPLE_AUX 1029 * { u64 data_page_size;} && PERF_SAMPLE_DATA_PAGE_SIZE 1030 * { u64 code_page_size;} && PERF_SAMPLE_CODE_PAGE_SIZE 1031 * }; 1032 */ 1033 PERF_RECORD_SAMPLE = 9, 1034 1035 /* 1036 * The MMAP2 records are an augmented version of MMAP, they add 1037 * maj, min, ino numbers to be used to uniquely identify each mapping 1038 * 1039 * struct { 1040 * struct perf_event_header header; 1041 * 1042 * u32 pid, tid; 1043 * u64 addr; 1044 * u64 len; 1045 * u64 pgoff; 1046 * union { 1047 * struct { 1048 * u32 maj; 1049 * u32 min; 1050 * u64 ino; 1051 * u64 ino_generation; 1052 * }; 1053 * struct { 1054 * u8 build_id_size; 1055 * u8 __reserved_1; 1056 * u16 __reserved_2; 1057 * u8 build_id[20]; 1058 * }; 1059 * }; 1060 * u32 prot, flags; 1061 * char filename[]; 1062 * struct sample_id sample_id; 1063 * }; 1064 */ 1065 PERF_RECORD_MMAP2 = 10, 1066 1067 /* 1068 * Records that new data landed in the AUX buffer part. 1069 * 1070 * struct { 1071 * struct perf_event_header header; 1072 * 1073 * u64 aux_offset; 1074 * u64 aux_size; 1075 * u64 flags; 1076 * struct sample_id sample_id; 1077 * }; 1078 */ 1079 PERF_RECORD_AUX = 11, 1080 1081 /* 1082 * Indicates that instruction trace has started 1083 * 1084 * struct { 1085 * struct perf_event_header header; 1086 * u32 pid; 1087 * u32 tid; 1088 * struct sample_id sample_id; 1089 * }; 1090 */ 1091 PERF_RECORD_ITRACE_START = 12, 1092 1093 /* 1094 * Records the dropped/lost sample number. 1095 * 1096 * struct { 1097 * struct perf_event_header header; 1098 * 1099 * u64 lost; 1100 * struct sample_id sample_id; 1101 * }; 1102 */ 1103 PERF_RECORD_LOST_SAMPLES = 13, 1104 1105 /* 1106 * Records a context switch in or out (flagged by 1107 * PERF_RECORD_MISC_SWITCH_OUT). See also 1108 * PERF_RECORD_SWITCH_CPU_WIDE. 1109 * 1110 * struct { 1111 * struct perf_event_header header; 1112 * struct sample_id sample_id; 1113 * }; 1114 */ 1115 PERF_RECORD_SWITCH = 14, 1116 1117 /* 1118 * CPU-wide version of PERF_RECORD_SWITCH with next_prev_pid and 1119 * next_prev_tid that are the next (switching out) or previous 1120 * (switching in) pid/tid. 1121 * 1122 * struct { 1123 * struct perf_event_header header; 1124 * u32 next_prev_pid; 1125 * u32 next_prev_tid; 1126 * struct sample_id sample_id; 1127 * }; 1128 */ 1129 PERF_RECORD_SWITCH_CPU_WIDE = 15, 1130 1131 /* 1132 * struct { 1133 * struct perf_event_header header; 1134 * u32 pid; 1135 * u32 tid; 1136 * u64 nr_namespaces; 1137 * { u64 dev, inode; } [nr_namespaces]; 1138 * struct sample_id sample_id; 1139 * }; 1140 */ 1141 PERF_RECORD_NAMESPACES = 16, 1142 1143 /* 1144 * Record ksymbol register/unregister events: 1145 * 1146 * struct { 1147 * struct perf_event_header header; 1148 * u64 addr; 1149 * u32 len; 1150 * u16 ksym_type; 1151 * u16 flags; 1152 * char name[]; 1153 * struct sample_id sample_id; 1154 * }; 1155 */ 1156 PERF_RECORD_KSYMBOL = 17, 1157 1158 /* 1159 * Record bpf events: 1160 * enum perf_bpf_event_type { 1161 * PERF_BPF_EVENT_UNKNOWN = 0, 1162 * PERF_BPF_EVENT_PROG_LOAD = 1, 1163 * PERF_BPF_EVENT_PROG_UNLOAD = 2, 1164 * }; 1165 * 1166 * struct { 1167 * struct perf_event_header header; 1168 * u16 type; 1169 * u16 flags; 1170 * u32 id; 1171 * u8 tag[BPF_TAG_SIZE]; 1172 * struct sample_id sample_id; 1173 * }; 1174 */ 1175 PERF_RECORD_BPF_EVENT = 18, 1176 1177 /* 1178 * struct { 1179 * struct perf_event_header header; 1180 * u64 id; 1181 * char path[]; 1182 * struct sample_id sample_id; 1183 * }; 1184 */ 1185 PERF_RECORD_CGROUP = 19, 1186 1187 /* 1188 * Records changes to kernel text i.e. self-modified code. 'old_len' is 1189 * the number of old bytes, 'new_len' is the number of new bytes. Either 1190 * 'old_len' or 'new_len' may be zero to indicate, for example, the 1191 * addition or removal of a trampoline. 'bytes' contains the old bytes 1192 * followed immediately by the new bytes. 1193 * 1194 * struct { 1195 * struct perf_event_header header; 1196 * u64 addr; 1197 * u16 old_len; 1198 * u16 new_len; 1199 * u8 bytes[]; 1200 * struct sample_id sample_id; 1201 * }; 1202 */ 1203 PERF_RECORD_TEXT_POKE = 20, 1204 1205 /* 1206 * Data written to the AUX area by hardware due to aux_output, may need 1207 * to be matched to the event by an architecture-specific hardware ID. 1208 * This records the hardware ID, but requires sample_id to provide the 1209 * event ID. e.g. Intel PT uses this record to disambiguate PEBS-via-PT 1210 * records from multiple events. 1211 * 1212 * struct { 1213 * struct perf_event_header header; 1214 * u64 hw_id; 1215 * struct sample_id sample_id; 1216 * }; 1217 */ 1218 PERF_RECORD_AUX_OUTPUT_HW_ID = 21, 1219 1220 PERF_RECORD_MAX, /* non-ABI */ 1221 }; 1222 1223 enum perf_record_ksymbol_type { 1224 PERF_RECORD_KSYMBOL_TYPE_UNKNOWN = 0, 1225 PERF_RECORD_KSYMBOL_TYPE_BPF = 1, 1226 /* 1227 * Out of line code such as kprobe-replaced instructions or optimized 1228 * kprobes or ftrace trampolines. 1229 */ 1230 PERF_RECORD_KSYMBOL_TYPE_OOL = 2, 1231 PERF_RECORD_KSYMBOL_TYPE_MAX /* non-ABI */ 1232 }; 1233 1234 #define PERF_RECORD_KSYMBOL_FLAGS_UNREGISTER (1 << 0) 1235 1236 enum perf_bpf_event_type { 1237 PERF_BPF_EVENT_UNKNOWN = 0, 1238 PERF_BPF_EVENT_PROG_LOAD = 1, 1239 PERF_BPF_EVENT_PROG_UNLOAD = 2, 1240 PERF_BPF_EVENT_MAX, /* non-ABI */ 1241 }; 1242 1243 #define PERF_MAX_STACK_DEPTH 127 1244 #define PERF_MAX_CONTEXTS_PER_STACK 8 1245 1246 enum perf_callchain_context { 1247 PERF_CONTEXT_HV = (__u64)-32, 1248 PERF_CONTEXT_KERNEL = (__u64)-128, 1249 PERF_CONTEXT_USER = (__u64)-512, 1250 1251 PERF_CONTEXT_GUEST = (__u64)-2048, 1252 PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, 1253 PERF_CONTEXT_GUEST_USER = (__u64)-2560, 1254 1255 PERF_CONTEXT_MAX = (__u64)-4095, 1256 }; 1257 1258 /** 1259 * PERF_RECORD_AUX::flags bits 1260 */ 1261 #define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */ 1262 #define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */ 1263 #define PERF_AUX_FLAG_PARTIAL 0x04 /* record contains gaps */ 1264 #define PERF_AUX_FLAG_COLLISION 0x08 /* sample collided with another */ 1265 #define PERF_AUX_FLAG_PMU_FORMAT_TYPE_MASK 0xff00 /* PMU specific trace format type */ 1266 1267 /* CoreSight PMU AUX buffer formats */ 1268 #define PERF_AUX_FLAG_CORESIGHT_FORMAT_CORESIGHT 0x0000 /* Default for backward compatibility */ 1269 #define PERF_AUX_FLAG_CORESIGHT_FORMAT_RAW 0x0100 /* Raw format of the source */ 1270 1271 #define PERF_FLAG_FD_NO_GROUP (1UL << 0) 1272 #define PERF_FLAG_FD_OUTPUT (1UL << 1) 1273 #define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ 1274 #define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ 1275 1276 #if defined(__LITTLE_ENDIAN_BITFIELD) 1277 union perf_mem_data_src { 1278 __u64 val; 1279 struct { 1280 __u64 mem_op:5, /* type of opcode */ 1281 mem_lvl:14, /* memory hierarchy level */ 1282 mem_snoop:5, /* snoop mode */ 1283 mem_lock:2, /* lock instr */ 1284 mem_dtlb:7, /* tlb access */ 1285 mem_lvl_num:4, /* memory hierarchy level number */ 1286 mem_remote:1, /* remote */ 1287 mem_snoopx:2, /* snoop mode, ext */ 1288 mem_blk:3, /* access blocked */ 1289 mem_hops:3, /* hop level */ 1290 mem_rsvd:18; 1291 }; 1292 }; 1293 #elif defined(__BIG_ENDIAN_BITFIELD) 1294 union perf_mem_data_src { 1295 __u64 val; 1296 struct { 1297 __u64 mem_rsvd:18, 1298 mem_hops:3, /* hop level */ 1299 mem_blk:3, /* access blocked */ 1300 mem_snoopx:2, /* snoop mode, ext */ 1301 mem_remote:1, /* remote */ 1302 mem_lvl_num:4, /* memory hierarchy level number */ 1303 mem_dtlb:7, /* tlb access */ 1304 mem_lock:2, /* lock instr */ 1305 mem_snoop:5, /* snoop mode */ 1306 mem_lvl:14, /* memory hierarchy level */ 1307 mem_op:5; /* type of opcode */ 1308 }; 1309 }; 1310 #else 1311 #error "Unknown endianness" 1312 #endif 1313 1314 /* type of opcode (load/store/prefetch,code) */ 1315 #define PERF_MEM_OP_NA 0x01 /* not available */ 1316 #define PERF_MEM_OP_LOAD 0x02 /* load instruction */ 1317 #define PERF_MEM_OP_STORE 0x04 /* store instruction */ 1318 #define PERF_MEM_OP_PFETCH 0x08 /* prefetch */ 1319 #define PERF_MEM_OP_EXEC 0x10 /* code (execution) */ 1320 #define PERF_MEM_OP_SHIFT 0 1321 1322 /* 1323 * PERF_MEM_LVL_* namespace being depricated to some extent in the 1324 * favour of newer composite PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_} fields. 1325 * Supporting this namespace inorder to not break defined ABIs. 1326 * 1327 * memory hierarchy (memory level, hit or miss) 1328 */ 1329 #define PERF_MEM_LVL_NA 0x01 /* not available */ 1330 #define PERF_MEM_LVL_HIT 0x02 /* hit level */ 1331 #define PERF_MEM_LVL_MISS 0x04 /* miss level */ 1332 #define PERF_MEM_LVL_L1 0x08 /* L1 */ 1333 #define PERF_MEM_LVL_LFB 0x10 /* Line Fill Buffer */ 1334 #define PERF_MEM_LVL_L2 0x20 /* L2 */ 1335 #define PERF_MEM_LVL_L3 0x40 /* L3 */ 1336 #define PERF_MEM_LVL_LOC_RAM 0x80 /* Local DRAM */ 1337 #define PERF_MEM_LVL_REM_RAM1 0x100 /* Remote DRAM (1 hop) */ 1338 #define PERF_MEM_LVL_REM_RAM2 0x200 /* Remote DRAM (2 hops) */ 1339 #define PERF_MEM_LVL_REM_CCE1 0x400 /* Remote Cache (1 hop) */ 1340 #define PERF_MEM_LVL_REM_CCE2 0x800 /* Remote Cache (2 hops) */ 1341 #define PERF_MEM_LVL_IO 0x1000 /* I/O memory */ 1342 #define PERF_MEM_LVL_UNC 0x2000 /* Uncached memory */ 1343 #define PERF_MEM_LVL_SHIFT 5 1344 1345 #define PERF_MEM_REMOTE_REMOTE 0x01 /* Remote */ 1346 #define PERF_MEM_REMOTE_SHIFT 37 1347 1348 #define PERF_MEM_LVLNUM_L1 0x01 /* L1 */ 1349 #define PERF_MEM_LVLNUM_L2 0x02 /* L2 */ 1350 #define PERF_MEM_LVLNUM_L3 0x03 /* L3 */ 1351 #define PERF_MEM_LVLNUM_L4 0x04 /* L4 */ 1352 /* 5-0x7 available */ 1353 #define PERF_MEM_LVLNUM_UNC 0x08 /* Uncached */ 1354 #define PERF_MEM_LVLNUM_CXL 0x09 /* CXL */ 1355 #define PERF_MEM_LVLNUM_IO 0x0a /* I/O */ 1356 #define PERF_MEM_LVLNUM_ANY_CACHE 0x0b /* Any cache */ 1357 #define PERF_MEM_LVLNUM_LFB 0x0c /* LFB */ 1358 #define PERF_MEM_LVLNUM_RAM 0x0d /* RAM */ 1359 #define PERF_MEM_LVLNUM_PMEM 0x0e /* PMEM */ 1360 #define PERF_MEM_LVLNUM_NA 0x0f /* N/A */ 1361 1362 #define PERF_MEM_LVLNUM_SHIFT 33 1363 1364 /* snoop mode */ 1365 #define PERF_MEM_SNOOP_NA 0x01 /* not available */ 1366 #define PERF_MEM_SNOOP_NONE 0x02 /* no snoop */ 1367 #define PERF_MEM_SNOOP_HIT 0x04 /* snoop hit */ 1368 #define PERF_MEM_SNOOP_MISS 0x08 /* snoop miss */ 1369 #define PERF_MEM_SNOOP_HITM 0x10 /* snoop hit modified */ 1370 #define PERF_MEM_SNOOP_SHIFT 19 1371 1372 #define PERF_MEM_SNOOPX_FWD 0x01 /* forward */ 1373 #define PERF_MEM_SNOOPX_PEER 0x02 /* xfer from peer */ 1374 #define PERF_MEM_SNOOPX_SHIFT 38 1375 1376 /* locked instruction */ 1377 #define PERF_MEM_LOCK_NA 0x01 /* not available */ 1378 #define PERF_MEM_LOCK_LOCKED 0x02 /* locked transaction */ 1379 #define PERF_MEM_LOCK_SHIFT 24 1380 1381 /* TLB access */ 1382 #define PERF_MEM_TLB_NA 0x01 /* not available */ 1383 #define PERF_MEM_TLB_HIT 0x02 /* hit level */ 1384 #define PERF_MEM_TLB_MISS 0x04 /* miss level */ 1385 #define PERF_MEM_TLB_L1 0x08 /* L1 */ 1386 #define PERF_MEM_TLB_L2 0x10 /* L2 */ 1387 #define PERF_MEM_TLB_WK 0x20 /* Hardware Walker*/ 1388 #define PERF_MEM_TLB_OS 0x40 /* OS fault handler */ 1389 #define PERF_MEM_TLB_SHIFT 26 1390 1391 /* Access blocked */ 1392 #define PERF_MEM_BLK_NA 0x01 /* not available */ 1393 #define PERF_MEM_BLK_DATA 0x02 /* data could not be forwarded */ 1394 #define PERF_MEM_BLK_ADDR 0x04 /* address conflict */ 1395 #define PERF_MEM_BLK_SHIFT 40 1396 1397 /* hop level */ 1398 #define PERF_MEM_HOPS_0 0x01 /* remote core, same node */ 1399 #define PERF_MEM_HOPS_1 0x02 /* remote node, same socket */ 1400 #define PERF_MEM_HOPS_2 0x03 /* remote socket, same board */ 1401 #define PERF_MEM_HOPS_3 0x04 /* remote board */ 1402 /* 5-7 available */ 1403 #define PERF_MEM_HOPS_SHIFT 43 1404 1405 #define PERF_MEM_S(a, s) \ 1406 (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT) 1407 1408 /* 1409 * single taken branch record layout: 1410 * 1411 * from: source instruction (may not always be a branch insn) 1412 * to: branch target 1413 * mispred: branch target was mispredicted 1414 * predicted: branch target was predicted 1415 * 1416 * support for mispred, predicted is optional. In case it 1417 * is not supported mispred = predicted = 0. 1418 * 1419 * in_tx: running in a hardware transaction 1420 * abort: aborting a hardware transaction 1421 * cycles: cycles from last branch (or 0 if not supported) 1422 * type: branch type 1423 * spec: branch speculation info (or 0 if not supported) 1424 */ 1425 struct perf_branch_entry { 1426 __u64 from; 1427 __u64 to; 1428 __u64 mispred:1, /* target mispredicted */ 1429 predicted:1,/* target predicted */ 1430 in_tx:1, /* in transaction */ 1431 abort:1, /* transaction abort */ 1432 cycles:16, /* cycle count to last branch */ 1433 type:4, /* branch type */ 1434 spec:2, /* branch speculation info */ 1435 new_type:4, /* additional branch type */ 1436 priv:3, /* privilege level */ 1437 reserved:31; 1438 }; 1439 1440 /* Size of used info bits in struct perf_branch_entry */ 1441 #define PERF_BRANCH_ENTRY_INFO_BITS_MAX 33 1442 1443 union perf_sample_weight { 1444 __u64 full; 1445 #if defined(__LITTLE_ENDIAN_BITFIELD) 1446 struct { 1447 __u32 var1_dw; 1448 __u16 var2_w; 1449 __u16 var3_w; 1450 }; 1451 #elif defined(__BIG_ENDIAN_BITFIELD) 1452 struct { 1453 __u16 var3_w; 1454 __u16 var2_w; 1455 __u32 var1_dw; 1456 }; 1457 #else 1458 #error "Unknown endianness" 1459 #endif 1460 }; 1461 1462 #endif /* _UAPI_LINUX_PERF_EVENT_H */ 1463