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-rw-r--r--include/linux/perf_counter.h441
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diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
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1/*
2 * NOTE: this file will be removed in a future kernel release, it is
3 * provided as a courtesy copy of user-space code that relies on the
4 * old (pre-rename) symbols and constants.
5 *
6 * Performance events:
7 *
8 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
9 * Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
10 * Copyright (C) 2008-2009, Red Hat, Inc., Peter Zijlstra
11 *
12 * Data type definitions, declarations, prototypes.
13 *
14 * Started by: Thomas Gleixner and Ingo Molnar
15 *
16 * For licencing details see kernel-base/COPYING
17 */
18#ifndef _LINUX_PERF_COUNTER_H
19#define _LINUX_PERF_COUNTER_H
20
21#include <linux/types.h>
22#include <linux/ioctl.h>
23#include <asm/byteorder.h>
24
25/*
26 * User-space ABI bits:
27 */
28
29/*
30 * attr.type
31 */
32enum perf_type_id {
33 PERF_TYPE_HARDWARE = 0,
34 PERF_TYPE_SOFTWARE = 1,
35 PERF_TYPE_TRACEPOINT = 2,
36 PERF_TYPE_HW_CACHE = 3,
37 PERF_TYPE_RAW = 4,
38
39 PERF_TYPE_MAX, /* non-ABI */
40};
41
42/*
43 * Generalized performance counter event types, used by the
44 * attr.event_id parameter of the sys_perf_counter_open()
45 * syscall:
46 */
47enum perf_hw_id {
48 /*
49 * Common hardware events, generalized by the kernel:
50 */
51 PERF_COUNT_HW_CPU_CYCLES = 0,
52 PERF_COUNT_HW_INSTRUCTIONS = 1,
53 PERF_COUNT_HW_CACHE_REFERENCES = 2,
54 PERF_COUNT_HW_CACHE_MISSES = 3,
55 PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4,
56 PERF_COUNT_HW_BRANCH_MISSES = 5,
57 PERF_COUNT_HW_BUS_CYCLES = 6,
58
59 PERF_COUNT_HW_MAX, /* non-ABI */
60};
61
62/*
63 * Generalized hardware cache counters:
64 *
65 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x
66 * { read, write, prefetch } x
67 * { accesses, misses }
68 */
69enum perf_hw_cache_id {
70 PERF_COUNT_HW_CACHE_L1D = 0,
71 PERF_COUNT_HW_CACHE_L1I = 1,
72 PERF_COUNT_HW_CACHE_LL = 2,
73 PERF_COUNT_HW_CACHE_DTLB = 3,
74 PERF_COUNT_HW_CACHE_ITLB = 4,
75 PERF_COUNT_HW_CACHE_BPU = 5,
76
77 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
78};
79
80enum perf_hw_cache_op_id {
81 PERF_COUNT_HW_CACHE_OP_READ = 0,
82 PERF_COUNT_HW_CACHE_OP_WRITE = 1,
83 PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
84
85 PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */
86};
87
88enum perf_hw_cache_op_result_id {
89 PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0,
90 PERF_COUNT_HW_CACHE_RESULT_MISS = 1,
91
92 PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */
93};
94
95/*
96 * Special "software" counters provided by the kernel, even if the hardware
97 * does not support performance counters. These counters measure various
98 * physical and sw events of the kernel (and allow the profiling of them as
99 * well):
100 */
101enum perf_sw_ids {
102 PERF_COUNT_SW_CPU_CLOCK = 0,
103 PERF_COUNT_SW_TASK_CLOCK = 1,
104 PERF_COUNT_SW_PAGE_FAULTS = 2,
105 PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
106 PERF_COUNT_SW_CPU_MIGRATIONS = 4,
107 PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
108 PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
109
110 PERF_COUNT_SW_MAX, /* non-ABI */
111};
112
113/*
114 * Bits that can be set in attr.sample_type to request information
115 * in the overflow packets.
116 */
117enum perf_counter_sample_format {
118 PERF_SAMPLE_IP = 1U << 0,
119 PERF_SAMPLE_TID = 1U << 1,
120 PERF_SAMPLE_TIME = 1U << 2,
121 PERF_SAMPLE_ADDR = 1U << 3,
122 PERF_SAMPLE_READ = 1U << 4,
123 PERF_SAMPLE_CALLCHAIN = 1U << 5,
124 PERF_SAMPLE_ID = 1U << 6,
125 PERF_SAMPLE_CPU = 1U << 7,
126 PERF_SAMPLE_PERIOD = 1U << 8,
127 PERF_SAMPLE_STREAM_ID = 1U << 9,
128 PERF_SAMPLE_RAW = 1U << 10,
129
130 PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */
131};
132
133/*
134 * The format of the data returned by read() on a perf counter fd,
135 * as specified by attr.read_format:
136 *
137 * struct read_format {
138 * { u64 value;
139 * { u64 time_enabled; } && PERF_FORMAT_ENABLED
140 * { u64 time_running; } && PERF_FORMAT_RUNNING
141 * { u64 id; } && PERF_FORMAT_ID
142 * } && !PERF_FORMAT_GROUP
143 *
144 * { u64 nr;
145 * { u64 time_enabled; } && PERF_FORMAT_ENABLED
146 * { u64 time_running; } && PERF_FORMAT_RUNNING
147 * { u64 value;
148 * { u64 id; } && PERF_FORMAT_ID
149 * } cntr[nr];
150 * } && PERF_FORMAT_GROUP
151 * };
152 */
153enum perf_counter_read_format {
154 PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
155 PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
156 PERF_FORMAT_ID = 1U << 2,
157 PERF_FORMAT_GROUP = 1U << 3,
158
159 PERF_FORMAT_MAX = 1U << 4, /* non-ABI */
160};
161
162#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
163
164/*
165 * Hardware event to monitor via a performance monitoring counter:
166 */
167struct perf_counter_attr {
168
169 /*
170 * Major type: hardware/software/tracepoint/etc.
171 */
172 __u32 type;
173
174 /*
175 * Size of the attr structure, for fwd/bwd compat.
176 */
177 __u32 size;
178
179 /*
180 * Type specific configuration information.
181 */
182 __u64 config;
183
184 union {
185 __u64 sample_period;
186 __u64 sample_freq;
187 };
188
189 __u64 sample_type;
190 __u64 read_format;
191
192 __u64 disabled : 1, /* off by default */
193 inherit : 1, /* children inherit it */
194 pinned : 1, /* must always be on PMU */
195 exclusive : 1, /* only group on PMU */
196 exclude_user : 1, /* don't count user */
197 exclude_kernel : 1, /* ditto kernel */
198 exclude_hv : 1, /* ditto hypervisor */
199 exclude_idle : 1, /* don't count when idle */
200 mmap : 1, /* include mmap data */
201 comm : 1, /* include comm data */
202 freq : 1, /* use freq, not period */
203 inherit_stat : 1, /* per task counts */
204 enable_on_exec : 1, /* next exec enables */
205 task : 1, /* trace fork/exit */
206 watermark : 1, /* wakeup_watermark */
207
208 __reserved_1 : 49;
209
210 union {
211 __u32 wakeup_events; /* wakeup every n events */
212 __u32 wakeup_watermark; /* bytes before wakeup */
213 };
214 __u32 __reserved_2;
215
216 __u64 __reserved_3;
217};
218
219/*
220 * Ioctls that can be done on a perf counter fd:
221 */
222#define PERF_COUNTER_IOC_ENABLE _IO ('$', 0)
223#define PERF_COUNTER_IOC_DISABLE _IO ('$', 1)
224#define PERF_COUNTER_IOC_REFRESH _IO ('$', 2)
225#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
226#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
227#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5)
228
229enum perf_counter_ioc_flags {
230 PERF_IOC_FLAG_GROUP = 1U << 0,
231};
232
233/*
234 * Structure of the page that can be mapped via mmap
235 */
236struct perf_counter_mmap_page {
237 __u32 version; /* version number of this structure */
238 __u32 compat_version; /* lowest version this is compat with */
239
240 /*
241 * Bits needed to read the hw counters in user-space.
242 *
243 * u32 seq;
244 * s64 count;
245 *
246 * do {
247 * seq = pc->lock;
248 *
249 * barrier()
250 * if (pc->index) {
251 * count = pmc_read(pc->index - 1);
252 * count += pc->offset;
253 * } else
254 * goto regular_read;
255 *
256 * barrier();
257 * } while (pc->lock != seq);
258 *
259 * NOTE: for obvious reason this only works on self-monitoring
260 * processes.
261 */
262 __u32 lock; /* seqlock for synchronization */
263 __u32 index; /* hardware counter identifier */
264 __s64 offset; /* add to hardware counter value */
265 __u64 time_enabled; /* time counter active */
266 __u64 time_running; /* time counter on cpu */
267
268 /*
269 * Hole for extension of the self monitor capabilities
270 */
271
272 __u64 __reserved[123]; /* align to 1k */
273
274 /*
275 * Control data for the mmap() data buffer.
276 *
277 * User-space reading the @data_head value should issue an rmb(), on
278 * SMP capable platforms, after reading this value -- see
279 * perf_counter_wakeup().
280 *
281 * When the mapping is PROT_WRITE the @data_tail value should be
282 * written by userspace to reflect the last read data. In this case
283 * the kernel will not over-write unread data.
284 */
285 __u64 data_head; /* head in the data section */
286 __u64 data_tail; /* user-space written tail */
287};
288
289#define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0)
290#define PERF_EVENT_MISC_CPUMODE_UNKNOWN (0 << 0)
291#define PERF_EVENT_MISC_KERNEL (1 << 0)
292#define PERF_EVENT_MISC_USER (2 << 0)
293#define PERF_EVENT_MISC_HYPERVISOR (3 << 0)
294
295struct perf_event_header {
296 __u32 type;
297 __u16 misc;
298 __u16 size;
299};
300
301enum perf_event_type {
302
303 /*
304 * The MMAP events record the PROT_EXEC mappings so that we can
305 * correlate userspace IPs to code. They have the following structure:
306 *
307 * struct {
308 * struct perf_event_header header;
309 *
310 * u32 pid, tid;
311 * u64 addr;
312 * u64 len;
313 * u64 pgoff;
314 * char filename[];
315 * };
316 */
317 PERF_EVENT_MMAP = 1,
318
319 /*
320 * struct {
321 * struct perf_event_header header;
322 * u64 id;
323 * u64 lost;
324 * };
325 */
326 PERF_EVENT_LOST = 2,
327
328 /*
329 * struct {
330 * struct perf_event_header header;
331 *
332 * u32 pid, tid;
333 * char comm[];
334 * };
335 */
336 PERF_EVENT_COMM = 3,
337
338 /*
339 * struct {
340 * struct perf_event_header header;
341 * u32 pid, ppid;
342 * u32 tid, ptid;
343 * u64 time;
344 * };
345 */
346 PERF_EVENT_EXIT = 4,
347
348 /*
349 * struct {
350 * struct perf_event_header header;
351 * u64 time;
352 * u64 id;
353 * u64 stream_id;
354 * };
355 */
356 PERF_EVENT_THROTTLE = 5,
357 PERF_EVENT_UNTHROTTLE = 6,
358
359 /*
360 * struct {
361 * struct perf_event_header header;
362 * u32 pid, ppid;
363 * u32 tid, ptid;
364 * { u64 time; } && PERF_SAMPLE_TIME
365 * };
366 */
367 PERF_EVENT_FORK = 7,
368
369 /*
370 * struct {
371 * struct perf_event_header header;
372 * u32 pid, tid;
373 *
374 * struct read_format values;
375 * };
376 */
377 PERF_EVENT_READ = 8,
378
379 /*
380 * struct {
381 * struct perf_event_header header;
382 *
383 * { u64 ip; } && PERF_SAMPLE_IP
384 * { u32 pid, tid; } && PERF_SAMPLE_TID
385 * { u64 time; } && PERF_SAMPLE_TIME
386 * { u64 addr; } && PERF_SAMPLE_ADDR
387 * { u64 id; } && PERF_SAMPLE_ID
388 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID
389 * { u32 cpu, res; } && PERF_SAMPLE_CPU
390 * { u64 period; } && PERF_SAMPLE_PERIOD
391 *
392 * { struct read_format values; } && PERF_SAMPLE_READ
393 *
394 * { u64 nr,
395 * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN
396 *
397 * #
398 * # The RAW record below is opaque data wrt the ABI
399 * #
400 * # That is, the ABI doesn't make any promises wrt to
401 * # the stability of its content, it may vary depending
402 * # on event, hardware, kernel version and phase of
403 * # the moon.
404 * #
405 * # In other words, PERF_SAMPLE_RAW contents are not an ABI.
406 * #
407 *
408 * { u32 size;
409 * char data[size];}&& PERF_SAMPLE_RAW
410 * };
411 */
412 PERF_EVENT_SAMPLE = 9,
413
414 PERF_EVENT_MAX, /* non-ABI */
415};
416
417enum perf_callchain_context {
418 PERF_CONTEXT_HV = (__u64)-32,
419 PERF_CONTEXT_KERNEL = (__u64)-128,
420 PERF_CONTEXT_USER = (__u64)-512,
421
422 PERF_CONTEXT_GUEST = (__u64)-2048,
423 PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176,
424 PERF_CONTEXT_GUEST_USER = (__u64)-2560,
425
426 PERF_CONTEXT_MAX = (__u64)-4095,
427};
428
429#define PERF_FLAG_FD_NO_GROUP (1U << 0)
430#define PERF_FLAG_FD_OUTPUT (1U << 1)
431
432/*
433 * In case some app still references the old symbols:
434 */
435
436#define __NR_perf_counter_open __NR_perf_event_open
437
438#define PR_TASK_PERF_COUNTERS_DISABLE PR_TASK_PERF_EVENTS_DISABLE
439#define PR_TASK_PERF_COUNTERS_ENABLE PR_TASK_PERF_EVENTS_ENABLE
440
441#endif /* _LINUX_PERF_COUNTER_H */
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