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