4 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
5 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar
6 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra
8 * Data type definitions, declarations, prototypes.
10 * Started by: Thomas Gleixner and Ingo Molnar
12 * For licencing details see kernel-base/COPYING
14 #ifndef _UAPI_LINUX_PERF_EVENT_H
15 #define _UAPI_LINUX_PERF_EVENT_H
17 #include <linux/types.h>
18 #include <linux/ioctl.h>
19 #include <asm/byteorder.h>
22 * User-space ABI bits:
29 PERF_TYPE_HARDWARE = 0,
30 PERF_TYPE_SOFTWARE = 1,
31 PERF_TYPE_TRACEPOINT = 2,
32 PERF_TYPE_HW_CACHE = 3,
34 PERF_TYPE_BREAKPOINT = 5,
36 PERF_TYPE_MAX, /* non-ABI */
40 * Generalized performance event event_id types, used by the
41 * attr.event_id parameter of the sys_perf_event_open()
46 * Common hardware events, generalized by the kernel:
48 PERF_COUNT_HW_CPU_CYCLES = 0,
49 PERF_COUNT_HW_INSTRUCTIONS = 1,
50 PERF_COUNT_HW_CACHE_REFERENCES = 2,
51 PERF_COUNT_HW_CACHE_MISSES = 3,
52 PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4,
53 PERF_COUNT_HW_BRANCH_MISSES = 5,
54 PERF_COUNT_HW_BUS_CYCLES = 6,
55 PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7,
56 PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8,
57 PERF_COUNT_HW_REF_CPU_CYCLES = 9,
59 PERF_COUNT_HW_MAX, /* non-ABI */
63 * Generalized hardware cache events:
65 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
66 * { read, write, prefetch } x
67 * { accesses, misses }
69 enum perf_hw_cache_id {
70 PERF_COUNT_HW_CACHE_L1D = 0,
71 PERF_COUNT_HW_CACHE_L1I = 1,
72 PERF_COUNT_HW_CACHE_LL = 2,
73 PERF_COUNT_HW_CACHE_DTLB = 3,
74 PERF_COUNT_HW_CACHE_ITLB = 4,
75 PERF_COUNT_HW_CACHE_BPU = 5,
76 PERF_COUNT_HW_CACHE_NODE = 6,
78 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
81 enum perf_hw_cache_op_id {
82 PERF_COUNT_HW_CACHE_OP_READ = 0,
83 PERF_COUNT_HW_CACHE_OP_WRITE = 1,
84 PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
86 PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */
89 enum perf_hw_cache_op_result_id {
90 PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0,
91 PERF_COUNT_HW_CACHE_RESULT_MISS = 1,
93 PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */
97 * Special "software" events provided by the kernel, even if the hardware
98 * does not support performance events. These events measure various
99 * physical and sw events of the kernel (and allow the profiling of them as
103 PERF_COUNT_SW_CPU_CLOCK = 0,
104 PERF_COUNT_SW_TASK_CLOCK = 1,
105 PERF_COUNT_SW_PAGE_FAULTS = 2,
106 PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
107 PERF_COUNT_SW_CPU_MIGRATIONS = 4,
108 PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
109 PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
110 PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
111 PERF_COUNT_SW_EMULATION_FAULTS = 8,
112 PERF_COUNT_SW_DUMMY = 9,
114 PERF_COUNT_SW_MAX, /* non-ABI */
118 * Bits that can be set in attr.sample_type to request information
119 * in the overflow packets.
121 enum perf_event_sample_format {
122 PERF_SAMPLE_IP = 1U << 0,
123 PERF_SAMPLE_TID = 1U << 1,
124 PERF_SAMPLE_TIME = 1U << 2,
125 PERF_SAMPLE_ADDR = 1U << 3,
126 PERF_SAMPLE_READ = 1U << 4,
127 PERF_SAMPLE_CALLCHAIN = 1U << 5,
128 PERF_SAMPLE_ID = 1U << 6,
129 PERF_SAMPLE_CPU = 1U << 7,
130 PERF_SAMPLE_PERIOD = 1U << 8,
131 PERF_SAMPLE_STREAM_ID = 1U << 9,
132 PERF_SAMPLE_RAW = 1U << 10,
133 PERF_SAMPLE_BRANCH_STACK = 1U << 11,
134 PERF_SAMPLE_REGS_USER = 1U << 12,
135 PERF_SAMPLE_STACK_USER = 1U << 13,
136 PERF_SAMPLE_WEIGHT = 1U << 14,
137 PERF_SAMPLE_DATA_SRC = 1U << 15,
138 PERF_SAMPLE_IDENTIFIER = 1U << 16,
139 PERF_SAMPLE_TRANSACTION = 1U << 17,
140 PERF_SAMPLE_REGS_INTR = 1U << 18,
142 PERF_SAMPLE_MAX = 1U << 19, /* non-ABI */
146 * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set
148 * If the user does not pass priv level information via branch_sample_type,
149 * the kernel uses the event's priv level. Branch and event priv levels do
150 * not have to match. Branch priv level is checked for permissions.
152 * The branch types can be combined, however BRANCH_ANY covers all types
153 * of branches and therefore it supersedes all the other types.
155 enum perf_branch_sample_type_shift {
156 PERF_SAMPLE_BRANCH_USER_SHIFT = 0, /* user branches */
157 PERF_SAMPLE_BRANCH_KERNEL_SHIFT = 1, /* kernel branches */
158 PERF_SAMPLE_BRANCH_HV_SHIFT = 2, /* hypervisor branches */
160 PERF_SAMPLE_BRANCH_ANY_SHIFT = 3, /* any branch types */
161 PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT = 4, /* any call branch */
162 PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT = 5, /* any return branch */
163 PERF_SAMPLE_BRANCH_IND_CALL_SHIFT = 6, /* indirect calls */
164 PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT = 7, /* transaction aborts */
165 PERF_SAMPLE_BRANCH_IN_TX_SHIFT = 8, /* in transaction */
166 PERF_SAMPLE_BRANCH_NO_TX_SHIFT = 9, /* not in transaction */
167 PERF_SAMPLE_BRANCH_COND_SHIFT = 10, /* conditional branches */
169 PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT = 11, /* call/ret stack */
171 PERF_SAMPLE_BRANCH_MAX_SHIFT /* non-ABI */
174 enum perf_branch_sample_type {
175 PERF_SAMPLE_BRANCH_USER = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT,
176 PERF_SAMPLE_BRANCH_KERNEL = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT,
177 PERF_SAMPLE_BRANCH_HV = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT,
179 PERF_SAMPLE_BRANCH_ANY = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT,
180 PERF_SAMPLE_BRANCH_ANY_CALL = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT,
181 PERF_SAMPLE_BRANCH_ANY_RETURN = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT,
182 PERF_SAMPLE_BRANCH_IND_CALL = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT,
183 PERF_SAMPLE_BRANCH_ABORT_TX = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT,
184 PERF_SAMPLE_BRANCH_IN_TX = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT,
185 PERF_SAMPLE_BRANCH_NO_TX = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT,
186 PERF_SAMPLE_BRANCH_COND = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT,
188 PERF_SAMPLE_BRANCH_CALL_STACK = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT,
190 PERF_SAMPLE_BRANCH_MAX = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
193 #define PERF_SAMPLE_BRANCH_PLM_ALL \
194 (PERF_SAMPLE_BRANCH_USER|\
195 PERF_SAMPLE_BRANCH_KERNEL|\
196 PERF_SAMPLE_BRANCH_HV)
199 * Values to determine ABI of the registers dump.
201 enum perf_sample_regs_abi {
202 PERF_SAMPLE_REGS_ABI_NONE = 0,
203 PERF_SAMPLE_REGS_ABI_32 = 1,
204 PERF_SAMPLE_REGS_ABI_64 = 2,
208 * Values for the memory transaction event qualifier, mostly for
209 * abort events. Multiple bits can be set.
212 PERF_TXN_ELISION = (1 << 0), /* From elision */
213 PERF_TXN_TRANSACTION = (1 << 1), /* From transaction */
214 PERF_TXN_SYNC = (1 << 2), /* Instruction is related */
215 PERF_TXN_ASYNC = (1 << 3), /* Instruction not related */
216 PERF_TXN_RETRY = (1 << 4), /* Retry possible */
217 PERF_TXN_CONFLICT = (1 << 5), /* Conflict abort */
218 PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */
219 PERF_TXN_CAPACITY_READ = (1 << 7), /* Capacity read abort */
221 PERF_TXN_MAX = (1 << 8), /* non-ABI */
223 /* bits 32..63 are reserved for the abort code */
225 PERF_TXN_ABORT_MASK = (0xffffffffULL << 32),
226 PERF_TXN_ABORT_SHIFT = 32,
230 * The format of the data returned by read() on a perf event fd,
231 * as specified by attr.read_format:
233 * struct read_format {
235 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
236 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
237 * { u64 id; } && PERF_FORMAT_ID
238 * } && !PERF_FORMAT_GROUP
241 * { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
242 * { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
244 * { u64 id; } && PERF_FORMAT_ID
246 * } && PERF_FORMAT_GROUP
249 enum perf_event_read_format {
250 PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
251 PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
252 PERF_FORMAT_ID = 1U << 2,
253 PERF_FORMAT_GROUP = 1U << 3,
255 PERF_FORMAT_MAX = 1U << 4, /* non-ABI */
258 #define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
259 #define PERF_ATTR_SIZE_VER1 72 /* add: config2 */
260 #define PERF_ATTR_SIZE_VER2 80 /* add: branch_sample_type */
261 #define PERF_ATTR_SIZE_VER3 96 /* add: sample_regs_user */
262 /* add: sample_stack_user */
263 #define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */
264 #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */
267 * Hardware event_id to monitor via a performance monitoring event:
269 struct perf_event_attr {
272 * Major type: hardware/software/tracepoint/etc.
277 * Size of the attr structure, for fwd/bwd compat.
282 * Type specific configuration information.
294 __u64 disabled : 1, /* off by default */
295 inherit : 1, /* children inherit it */
296 pinned : 1, /* must always be on PMU */
297 exclusive : 1, /* only group on PMU */
298 exclude_user : 1, /* don't count user */
299 exclude_kernel : 1, /* ditto kernel */
300 exclude_hv : 1, /* ditto hypervisor */
301 exclude_idle : 1, /* don't count when idle */
302 mmap : 1, /* include mmap data */
303 comm : 1, /* include comm data */
304 freq : 1, /* use freq, not period */
305 inherit_stat : 1, /* per task counts */
306 enable_on_exec : 1, /* next exec enables */
307 task : 1, /* trace fork/exit */
308 watermark : 1, /* wakeup_watermark */
312 * 0 - SAMPLE_IP can have arbitrary skid
313 * 1 - SAMPLE_IP must have constant skid
314 * 2 - SAMPLE_IP requested to have 0 skid
315 * 3 - SAMPLE_IP must have 0 skid
317 * See also PERF_RECORD_MISC_EXACT_IP
319 precise_ip : 2, /* skid constraint */
320 mmap_data : 1, /* non-exec mmap data */
321 sample_id_all : 1, /* sample_type all events */
323 exclude_host : 1, /* don't count in host */
324 exclude_guest : 1, /* don't count in guest */
326 exclude_callchain_kernel : 1, /* exclude kernel callchains */
327 exclude_callchain_user : 1, /* exclude user callchains */
328 mmap2 : 1, /* include mmap with inode data */
329 comm_exec : 1, /* flag comm events that are due to an exec */
330 use_clockid : 1, /* use @clockid for time fields */
334 __u32 wakeup_events; /* wakeup every n events */
335 __u32 wakeup_watermark; /* bytes before wakeup */
341 __u64 config1; /* extension of config */
345 __u64 config2; /* extension of config1 */
347 __u64 branch_sample_type; /* enum perf_branch_sample_type */
350 * Defines set of user regs to dump on samples.
351 * See asm/perf_regs.h for details.
353 __u64 sample_regs_user;
356 * Defines size of the user stack to dump on samples.
358 __u32 sample_stack_user;
362 * Defines set of regs to dump for each sample
364 * - precise = 0: PMU interrupt
365 * - precise > 0: sampled instruction
367 * See asm/perf_regs.h for details.
369 __u64 sample_regs_intr;
372 * Wakeup watermark for AUX area
375 __u32 __reserved_2; /* align to __u64 */
378 #define perf_flags(attr) (*(&(attr)->read_format + 1))
381 * Ioctls that can be done on a perf event fd:
383 #define PERF_EVENT_IOC_ENABLE _IO ('$', 0)
384 #define PERF_EVENT_IOC_DISABLE _IO ('$', 1)
385 #define PERF_EVENT_IOC_REFRESH _IO ('$', 2)
386 #define PERF_EVENT_IOC_RESET _IO ('$', 3)
387 #define PERF_EVENT_IOC_PERIOD _IOW('$', 4, __u64)
388 #define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5)
389 #define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *)
390 #define PERF_EVENT_IOC_ID _IOR('$', 7, __u64 *)
391 #define PERF_EVENT_IOC_SET_BPF _IOW('$', 8, __u32)
393 enum perf_event_ioc_flags {
394 PERF_IOC_FLAG_GROUP = 1U << 0,
398 * Structure of the page that can be mapped via mmap
400 struct perf_event_mmap_page {
401 __u32 version; /* version number of this structure */
402 __u32 compat_version; /* lowest version this is compat with */
405 * Bits needed to read the hw events in user-space.
407 * u32 seq, time_mult, time_shift, index, width;
408 * u64 count, enabled, running;
409 * u64 cyc, time_offset;
416 * enabled = pc->time_enabled;
417 * running = pc->time_running;
419 * if (pc->cap_usr_time && enabled != running) {
421 * time_offset = pc->time_offset;
422 * time_mult = pc->time_mult;
423 * time_shift = pc->time_shift;
427 * count = pc->offset;
428 * if (pc->cap_user_rdpmc && index) {
429 * width = pc->pmc_width;
430 * pmc = rdpmc(index - 1);
434 * } while (pc->lock != seq);
436 * NOTE: for obvious reason this only works on self-monitoring
439 __u32 lock; /* seqlock for synchronization */
440 __u32 index; /* hardware event identifier */
441 __s64 offset; /* add to hardware event value */
442 __u64 time_enabled; /* time event active */
443 __u64 time_running; /* time event on cpu */
447 __u64 cap_bit0 : 1, /* Always 0, deprecated, see commit 860f085b74e9 */
448 cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */
450 cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */
451 cap_user_time : 1, /* The time_* fields are used */
452 cap_user_time_zero : 1, /* The time_zero field is used */
458 * If cap_user_rdpmc this field provides the bit-width of the value
459 * read using the rdpmc() or equivalent instruction. This can be used
460 * to sign extend the result like:
462 * pmc <<= 64 - width;
463 * pmc >>= 64 - width; // signed shift right
469 * If cap_usr_time the below fields can be used to compute the time
470 * delta since time_enabled (in ns) using rdtsc or similar.
475 * quot = (cyc >> time_shift);
476 * rem = cyc & ((1 << time_shift) - 1);
477 * delta = time_offset + quot * time_mult +
478 * ((rem * time_mult) >> time_shift);
480 * Where time_offset,time_mult,time_shift and cyc are read in the
481 * seqcount loop described above. This delta can then be added to
482 * enabled and possible running (if index), improving the scaling:
488 * quot = count / running;
489 * rem = count % running;
490 * count = quot * enabled + (rem * enabled) / running;
496 * If cap_usr_time_zero, the hardware clock (e.g. TSC) can be calculated
497 * from sample timestamps.
499 * time = timestamp - time_zero;
500 * quot = time / time_mult;
501 * rem = time % time_mult;
502 * cyc = (quot << time_shift) + (rem << time_shift) / time_mult;
506 * quot = cyc >> time_shift;
507 * rem = cyc & ((1 << time_shift) - 1);
508 * timestamp = time_zero + quot * time_mult +
509 * ((rem * time_mult) >> time_shift);
512 __u32 size; /* Header size up to __reserved[] fields. */
515 * Hole for extension of the self monitor capabilities
518 __u8 __reserved[118*8+4]; /* align to 1k. */
521 * Control data for the mmap() data buffer.
523 * User-space reading the @data_head value should issue an smp_rmb(),
524 * after reading this value.
526 * When the mapping is PROT_WRITE the @data_tail value should be
527 * written by userspace to reflect the last read data, after issueing
528 * an smp_mb() to separate the data read from the ->data_tail store.
529 * In this case the kernel will not over-write unread data.
531 * See perf_output_put_handle() for the data ordering.
533 * data_{offset,size} indicate the location and size of the perf record
534 * buffer within the mmapped area.
536 __u64 data_head; /* head in the data section */
537 __u64 data_tail; /* user-space written tail */
538 __u64 data_offset; /* where the buffer starts */
539 __u64 data_size; /* data buffer size */
542 * AUX area is defined by aux_{offset,size} fields that should be set
543 * by the userspace, so that
545 * aux_offset >= data_offset + data_size
547 * prior to mmap()ing it. Size of the mmap()ed area should be aux_size.
549 * Ring buffer pointers aux_{head,tail} have the same semantics as
550 * data_{head,tail} and same ordering rules apply.
558 #define PERF_RECORD_MISC_CPUMODE_MASK (7 << 0)
559 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0)
560 #define PERF_RECORD_MISC_KERNEL (1 << 0)
561 #define PERF_RECORD_MISC_USER (2 << 0)
562 #define PERF_RECORD_MISC_HYPERVISOR (3 << 0)
563 #define PERF_RECORD_MISC_GUEST_KERNEL (4 << 0)
564 #define PERF_RECORD_MISC_GUEST_USER (5 << 0)
567 * PERF_RECORD_MISC_MMAP_DATA and PERF_RECORD_MISC_COMM_EXEC are used on
568 * different events so can reuse the same bit position.
570 #define PERF_RECORD_MISC_MMAP_DATA (1 << 13)
571 #define PERF_RECORD_MISC_COMM_EXEC (1 << 13)
573 * Indicates that the content of PERF_SAMPLE_IP points to
574 * the actual instruction that triggered the event. See also
575 * perf_event_attr::precise_ip.
577 #define PERF_RECORD_MISC_EXACT_IP (1 << 14)
579 * Reserve the last bit to indicate some extended misc field
581 #define PERF_RECORD_MISC_EXT_RESERVED (1 << 15)
583 struct perf_event_header {
589 enum perf_event_type {
592 * If perf_event_attr.sample_id_all is set then all event types will
593 * have the sample_type selected fields related to where/when
594 * (identity) an event took place (TID, TIME, ID, STREAM_ID, CPU,
595 * IDENTIFIER) described in PERF_RECORD_SAMPLE below, it will be stashed
596 * just after the perf_event_header and the fields already present for
597 * the existing fields, i.e. at the end of the payload. That way a newer
598 * perf.data file will be supported by older perf tools, with these new
599 * optional fields being ignored.
602 * { u32 pid, tid; } && PERF_SAMPLE_TID
603 * { u64 time; } && PERF_SAMPLE_TIME
604 * { u64 id; } && PERF_SAMPLE_ID
605 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID
606 * { u32 cpu, res; } && PERF_SAMPLE_CPU
607 * { u64 id; } && PERF_SAMPLE_IDENTIFIER
608 * } && perf_event_attr::sample_id_all
610 * Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID. The
611 * advantage of PERF_SAMPLE_IDENTIFIER is that its position is fixed
612 * relative to header.size.
616 * The MMAP events record the PROT_EXEC mappings so that we can
617 * correlate userspace IPs to code. They have the following structure:
620 * struct perf_event_header header;
627 * struct sample_id sample_id;
630 PERF_RECORD_MMAP = 1,
634 * struct perf_event_header header;
637 * struct sample_id sample_id;
640 PERF_RECORD_LOST = 2,
644 * struct perf_event_header header;
648 * struct sample_id sample_id;
651 PERF_RECORD_COMM = 3,
655 * struct perf_event_header header;
659 * struct sample_id sample_id;
662 PERF_RECORD_EXIT = 4,
666 * struct perf_event_header header;
670 * struct sample_id sample_id;
673 PERF_RECORD_THROTTLE = 5,
674 PERF_RECORD_UNTHROTTLE = 6,
678 * struct perf_event_header header;
682 * struct sample_id sample_id;
685 PERF_RECORD_FORK = 7,
689 * struct perf_event_header header;
692 * struct read_format values;
693 * struct sample_id sample_id;
696 PERF_RECORD_READ = 8,
700 * struct perf_event_header header;
703 * # Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID.
704 * # The advantage of PERF_SAMPLE_IDENTIFIER is that its position
705 * # is fixed relative to header.
708 * { u64 id; } && PERF_SAMPLE_IDENTIFIER
709 * { u64 ip; } && PERF_SAMPLE_IP
710 * { u32 pid, tid; } && PERF_SAMPLE_TID
711 * { u64 time; } && PERF_SAMPLE_TIME
712 * { u64 addr; } && PERF_SAMPLE_ADDR
713 * { u64 id; } && PERF_SAMPLE_ID
714 * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID
715 * { u32 cpu, res; } && PERF_SAMPLE_CPU
716 * { u64 period; } && PERF_SAMPLE_PERIOD
718 * { struct read_format values; } && PERF_SAMPLE_READ
721 * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN
724 * # The RAW record below is opaque data wrt the ABI
726 * # That is, the ABI doesn't make any promises wrt to
727 * # the stability of its content, it may vary depending
728 * # on event, hardware, kernel version and phase of
731 * # In other words, PERF_SAMPLE_RAW contents are not an ABI.
735 * char data[size];}&& PERF_SAMPLE_RAW
738 * { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK
740 * { u64 abi; # enum perf_sample_regs_abi
741 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER
745 * u64 dyn_size; } && PERF_SAMPLE_STACK_USER
747 * { u64 weight; } && PERF_SAMPLE_WEIGHT
748 * { u64 data_src; } && PERF_SAMPLE_DATA_SRC
749 * { u64 transaction; } && PERF_SAMPLE_TRANSACTION
750 * { u64 abi; # enum perf_sample_regs_abi
751 * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR
754 PERF_RECORD_SAMPLE = 9,
757 * The MMAP2 records are an augmented version of MMAP, they add
758 * maj, min, ino numbers to be used to uniquely identify each mapping
761 * struct perf_event_header header;
770 * u64 ino_generation;
773 * struct sample_id sample_id;
776 PERF_RECORD_MMAP2 = 10,
779 * Records that new data landed in the AUX buffer part.
782 * struct perf_event_header header;
787 * struct sample_id sample_id;
790 PERF_RECORD_AUX = 11,
793 * Indicates that instruction trace has started
796 * struct perf_event_header header;
801 PERF_RECORD_ITRACE_START = 12,
803 PERF_RECORD_MAX, /* non-ABI */
806 #define PERF_MAX_STACK_DEPTH 127
808 enum perf_callchain_context {
809 PERF_CONTEXT_HV = (__u64)-32,
810 PERF_CONTEXT_KERNEL = (__u64)-128,
811 PERF_CONTEXT_USER = (__u64)-512,
813 PERF_CONTEXT_GUEST = (__u64)-2048,
814 PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176,
815 PERF_CONTEXT_GUEST_USER = (__u64)-2560,
817 PERF_CONTEXT_MAX = (__u64)-4095,
821 * PERF_RECORD_AUX::flags bits
823 #define PERF_AUX_FLAG_TRUNCATED 0x01 /* record was truncated to fit */
824 #define PERF_AUX_FLAG_OVERWRITE 0x02 /* snapshot from overwrite mode */
826 #define PERF_FLAG_FD_NO_GROUP (1UL << 0)
827 #define PERF_FLAG_FD_OUTPUT (1UL << 1)
828 #define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */
829 #define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */
831 union perf_mem_data_src {
834 __u64 mem_op:5, /* type of opcode */
835 mem_lvl:14, /* memory hierarchy level */
836 mem_snoop:5, /* snoop mode */
837 mem_lock:2, /* lock instr */
838 mem_dtlb:7, /* tlb access */
843 /* type of opcode (load/store/prefetch,code) */
844 #define PERF_MEM_OP_NA 0x01 /* not available */
845 #define PERF_MEM_OP_LOAD 0x02 /* load instruction */
846 #define PERF_MEM_OP_STORE 0x04 /* store instruction */
847 #define PERF_MEM_OP_PFETCH 0x08 /* prefetch */
848 #define PERF_MEM_OP_EXEC 0x10 /* code (execution) */
849 #define PERF_MEM_OP_SHIFT 0
851 /* memory hierarchy (memory level, hit or miss) */
852 #define PERF_MEM_LVL_NA 0x01 /* not available */
853 #define PERF_MEM_LVL_HIT 0x02 /* hit level */
854 #define PERF_MEM_LVL_MISS 0x04 /* miss level */
855 #define PERF_MEM_LVL_L1 0x08 /* L1 */
856 #define PERF_MEM_LVL_LFB 0x10 /* Line Fill Buffer */
857 #define PERF_MEM_LVL_L2 0x20 /* L2 */
858 #define PERF_MEM_LVL_L3 0x40 /* L3 */
859 #define PERF_MEM_LVL_LOC_RAM 0x80 /* Local DRAM */
860 #define PERF_MEM_LVL_REM_RAM1 0x100 /* Remote DRAM (1 hop) */
861 #define PERF_MEM_LVL_REM_RAM2 0x200 /* Remote DRAM (2 hops) */
862 #define PERF_MEM_LVL_REM_CCE1 0x400 /* Remote Cache (1 hop) */
863 #define PERF_MEM_LVL_REM_CCE2 0x800 /* Remote Cache (2 hops) */
864 #define PERF_MEM_LVL_IO 0x1000 /* I/O memory */
865 #define PERF_MEM_LVL_UNC 0x2000 /* Uncached memory */
866 #define PERF_MEM_LVL_SHIFT 5
869 #define PERF_MEM_SNOOP_NA 0x01 /* not available */
870 #define PERF_MEM_SNOOP_NONE 0x02 /* no snoop */
871 #define PERF_MEM_SNOOP_HIT 0x04 /* snoop hit */
872 #define PERF_MEM_SNOOP_MISS 0x08 /* snoop miss */
873 #define PERF_MEM_SNOOP_HITM 0x10 /* snoop hit modified */
874 #define PERF_MEM_SNOOP_SHIFT 19
876 /* locked instruction */
877 #define PERF_MEM_LOCK_NA 0x01 /* not available */
878 #define PERF_MEM_LOCK_LOCKED 0x02 /* locked transaction */
879 #define PERF_MEM_LOCK_SHIFT 24
882 #define PERF_MEM_TLB_NA 0x01 /* not available */
883 #define PERF_MEM_TLB_HIT 0x02 /* hit level */
884 #define PERF_MEM_TLB_MISS 0x04 /* miss level */
885 #define PERF_MEM_TLB_L1 0x08 /* L1 */
886 #define PERF_MEM_TLB_L2 0x10 /* L2 */
887 #define PERF_MEM_TLB_WK 0x20 /* Hardware Walker*/
888 #define PERF_MEM_TLB_OS 0x40 /* OS fault handler */
889 #define PERF_MEM_TLB_SHIFT 26
891 #define PERF_MEM_S(a, s) \
892 (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
895 * single taken branch record layout:
897 * from: source instruction (may not always be a branch insn)
899 * mispred: branch target was mispredicted
900 * predicted: branch target was predicted
902 * support for mispred, predicted is optional. In case it
903 * is not supported mispred = predicted = 0.
905 * in_tx: running in a hardware transaction
906 * abort: aborting a hardware transaction
908 struct perf_branch_entry {
911 __u64 mispred:1, /* target mispredicted */
912 predicted:1,/* target predicted */
913 in_tx:1, /* in transaction */
914 abort:1, /* transaction abort */
918 #endif /* _UAPI_LINUX_PERF_EVENT_H */