include/uapi/linux/perf_event.h

   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  * Generalized performance event event_id types, used by the
  42  * attr.event_id parameter of the sys_perf_event_open()
  43  * syscall:
  44  */
  45 enum perf_hw_id {
  46         /*
  47          * Common hardware events, generalized by the kernel:
  48          */
  49         PERF_COUNT_HW_CPU_CYCLES                = 0,
  50         PERF_COUNT_HW_INSTRUCTIONS              = 1,
  51         PERF_COUNT_HW_CACHE_REFERENCES          = 2,
  52         PERF_COUNT_HW_CACHE_MISSES              = 3,
  53         PERF_COUNT_HW_BRANCH_INSTRUCTIONS       = 4,
  54         PERF_COUNT_HW_BRANCH_MISSES             = 5,
  55         PERF_COUNT_HW_BUS_CYCLES                = 6,
  56         PERF_COUNT_HW_STALLED_CYCLES_FRONTEND   = 7,
  57         PERF_COUNT_HW_STALLED_CYCLES_BACKEND    = 8,
  58         PERF_COUNT_HW_REF_CPU_CYCLES            = 9,
  59
  60         PERF_COUNT_HW_MAX,                      /* non-ABI */
  61 };
  62
  63 /*
  64  * Generalized hardware cache events:
  65  *
  66  *       { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
  67  *       { read, write, prefetch } x
  68  *       { accesses, misses }
  69  */
  70 enum perf_hw_cache_id {
  71         PERF_COUNT_HW_CACHE_L1D                 = 0,
  72         PERF_COUNT_HW_CACHE_L1I                 = 1,
  73         PERF_COUNT_HW_CACHE_LL                  = 2,
  74         PERF_COUNT_HW_CACHE_DTLB                = 3,
  75         PERF_COUNT_HW_CACHE_ITLB                = 4,
  76         PERF_COUNT_HW_CACHE_BPU                 = 5,
  77         PERF_COUNT_HW_CACHE_NODE                = 6,
  78
  79         PERF_COUNT_HW_CACHE_MAX,                /* non-ABI */
  80 };
  81
  82 enum perf_hw_cache_op_id {
  83         PERF_COUNT_HW_CACHE_OP_READ             = 0,
  84         PERF_COUNT_HW_CACHE_OP_WRITE            = 1,
  85         PERF_COUNT_HW_CACHE_OP_PREFETCH         = 2,
  86
  87         PERF_COUNT_HW_CACHE_OP_MAX,             /* non-ABI */
  88 };
  89
  90 enum perf_hw_cache_op_result_id {
  91         PERF_COUNT_HW_CACHE_RESULT_ACCESS       = 0,
  92         PERF_COUNT_HW_CACHE_RESULT_MISS         = 1,
  93
  94         PERF_COUNT_HW_CACHE_RESULT_MAX,         /* non-ABI */
  95 };
  96
  97 /*
  98  * Special "software" events provided by the kernel, even if the hardware
  99  * does not support performance events. These events measure various
 100  * physical and sw events of the kernel (and allow the profiling of them as
 101  * well):
 102  */
 103 enum perf_sw_ids {
 104         PERF_COUNT_SW_CPU_CLOCK                 = 0,
 105         PERF_COUNT_SW_TASK_CLOCK                = 1,
 106         PERF_COUNT_SW_PAGE_FAULTS               = 2,
 107         PERF_COUNT_SW_CONTEXT_SWITCHES          = 3,
 108         PERF_COUNT_SW_CPU_MIGRATIONS            = 4,
 109         PERF_COUNT_SW_PAGE_FAULTS_MIN           = 5,
 110         PERF_COUNT_SW_PAGE_FAULTS_MAJ           = 6,
 111         PERF_COUNT_SW_ALIGNMENT_FAULTS          = 7,
 112         PERF_COUNT_SW_EMULATION_FAULTS          = 8,
 113         PERF_COUNT_SW_DUMMY                     = 9,
 114         PERF_COUNT_SW_BPF_OUTPUT                = 10,
 115
 116         PERF_COUNT_SW_MAX,                      /* non-ABI */
 117 };
 118
 119 /*
 120  * Bits that can be set in attr.sample_type to request information
 121  * in the overflow packets.
 122  */
 123 enum perf_event_sample_format {
 124         PERF_SAMPLE_IP                          = 1U << 0,
 125         PERF_SAMPLE_TID                         = 1U << 1,
 126         PERF_SAMPLE_TIME                        = 1U << 2,
 127         PERF_SAMPLE_ADDR                        = 1U << 3,
 128         PERF_SAMPLE_READ                        = 1U << 4,
 129         PERF_SAMPLE_CALLCHAIN                   = 1U << 5,
 130         PERF_SAMPLE_ID                          = 1U << 6,
 131         PERF_SAMPLE_CPU                         = 1U << 7,
 132         PERF_SAMPLE_PERIOD                      = 1U << 8,
 133         PERF_SAMPLE_STREAM_ID                   = 1U << 9,
 134         PERF_SAMPLE_RAW                         = 1U << 10,
 135         PERF_SAMPLE_BRANCH_STACK                = 1U << 11,
 136         PERF_SAMPLE_REGS_USER                   = 1U << 12,
 137         PERF_SAMPLE_STACK_USER                  = 1U << 13,
 138         PERF_SAMPLE_WEIGHT                      = 1U << 14,
 139         PERF_SAMPLE_DATA_SRC                    = 1U << 15,
 140         PERF_SAMPLE_IDENTIFIER                  = 1U << 16,
 141         PERF_SAMPLE_TRANSACTION                 = 1U << 17,
 142         PERF_SAMPLE_REGS_INTR                   = 1U << 18,
 143         PERF_SAMPLE_PHYS_ADDR                   = 1U << 19,
 144
 145         PERF_SAMPLE_MAX = 1U << 20,             /* non-ABI */
 146 };
 147
 148 /*
 149  * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set
 150  *
 151  * If the user does not pass priv level information via branch_sample_type,
 152  * the kernel uses the event's priv level. Branch and event priv levels do
 153  * not have to match. Branch priv level is checked for permissions.
 154  *
 155  * The branch types can be combined, however BRANCH_ANY covers all types
 156  * of branches and therefore it supersedes all the other types.
 157  */
 158 enum perf_branch_sample_type_shift {
 159         PERF_SAMPLE_BRANCH_USER_SHIFT           = 0, /* user branches */
 160         PERF_SAMPLE_BRANCH_KERNEL_SHIFT         = 1, /* kernel branches */
 161         PERF_SAMPLE_BRANCH_HV_SHIFT             = 2, /* hypervisor branches */
 162
 163         PERF_SAMPLE_BRANCH_ANY_SHIFT            = 3, /* any branch types */
 164         PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT       = 4, /* any call branch */
 165         PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT     = 5, /* any return branch */
 166         PERF_SAMPLE_BRANCH_IND_CALL_SHIFT       = 6, /* indirect calls */
 167         PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT       = 7, /* transaction aborts */
 168         PERF_SAMPLE_BRANCH_IN_TX_SHIFT          = 8, /* in transaction */
 169         PERF_SAMPLE_BRANCH_NO_TX_SHIFT          = 9, /* not in transaction */
 170         PERF_SAMPLE_BRANCH_COND_SHIFT           = 10, /* conditional branches */
 171
 172         PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT     = 11, /* call/ret stack */
 173         PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT       = 12, /* indirect jumps */
 174         PERF_SAMPLE_BRANCH_CALL_SHIFT           = 13, /* direct call */
 175
 176         PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT       = 14, /* no flags */
 177         PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT      = 15, /* no cycles */
 178
 179         PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT      = 16, /* save branch type */
 180
 181         PERF_SAMPLE_BRANCH_MAX_SHIFT            /* non-ABI */
 182 };
 183
 184 enum perf_branch_sample_type {
 185         PERF_SAMPLE_BRANCH_USER         = 1U << PERF_SAMPLE_BRANCH_USER_SHIFT,
 186         PERF_SAMPLE_BRANCH_KERNEL       = 1U << PERF_SAMPLE_BRANCH_KERNEL_SHIFT,
 187         PERF_SAMPLE_BRANCH_HV           = 1U << PERF_SAMPLE_BRANCH_HV_SHIFT,
 188
 189         PERF_SAMPLE_BRANCH_ANY          = 1U << PERF_SAMPLE_BRANCH_ANY_SHIFT,
 190         PERF_SAMPLE_BRANCH_ANY_CALL     = 1U << PERF_SAMPLE_BRANCH_ANY_CALL_SHIFT,
 191         PERF_SAMPLE_BRANCH_ANY_RETURN   = 1U << PERF_SAMPLE_BRANCH_ANY_RETURN_SHIFT,
 192         PERF_SAMPLE_BRANCH_IND_CALL     = 1U << PERF_SAMPLE_BRANCH_IND_CALL_SHIFT,
 193         PERF_SAMPLE_BRANCH_ABORT_TX     = 1U << PERF_SAMPLE_BRANCH_ABORT_TX_SHIFT,
 194         PERF_SAMPLE_BRANCH_IN_TX        = 1U << PERF_SAMPLE_BRANCH_IN_TX_SHIFT,
 195         PERF_SAMPLE_BRANCH_NO_TX        = 1U << PERF_SAMPLE_BRANCH_NO_TX_SHIFT,
 196         PERF_SAMPLE_BRANCH_COND         = 1U << PERF_SAMPLE_BRANCH_COND_SHIFT,
 197
 198         PERF_SAMPLE_BRANCH_CALL_STACK   = 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT,
 199         PERF_SAMPLE_BRANCH_IND_JUMP     = 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT,
 200         PERF_SAMPLE_BRANCH_CALL         = 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT,
 201
 202         PERF_SAMPLE_BRANCH_NO_FLAGS     = 1U << PERF_SAMPLE_BRANCH_NO_FLAGS_SHIFT,
 203         PERF_SAMPLE_BRANCH_NO_CYCLES    = 1U << PERF_SAMPLE_BRANCH_NO_CYCLES_SHIFT,
 204
 205         PERF_SAMPLE_BRANCH_TYPE_SAVE    =
 206                 1U << PERF_SAMPLE_BRANCH_TYPE_SAVE_SHIFT,
 207
 208         PERF_SAMPLE_BRANCH_MAX          = 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
 209 };
 210
 211 /*
 212  * Common flow change classification
 213  */
 214 enum {
 215         PERF_BR_UNKNOWN         = 0,    /* unknown */
 216         PERF_BR_COND            = 1,    /* conditional */
 217         PERF_BR_UNCOND          = 2,    /* unconditional  */
 218         PERF_BR_IND             = 3,    /* indirect */
 219         PERF_BR_CALL            = 4,    /* function call */
 220         PERF_BR_IND_CALL        = 5,    /* indirect function call */
 221         PERF_BR_RET             = 6,    /* function return */
 222         PERF_BR_SYSCALL         = 7,    /* syscall */
 223         PERF_BR_SYSRET          = 8,    /* syscall return */
 224         PERF_BR_COND_CALL       = 9,    /* conditional function call */
 225         PERF_BR_COND_RET        = 10,   /* conditional function return */
 226         PERF_BR_MAX,
 227 };
 228
 229 #define PERF_SAMPLE_BRANCH_PLM_ALL \
 230         (PERF_SAMPLE_BRANCH_USER|\
 231          PERF_SAMPLE_BRANCH_KERNEL|\
 232          PERF_SAMPLE_BRANCH_HV)
 233
 234 /*
 235  * Values to determine ABI of the registers dump.
 236  */
 237 enum perf_sample_regs_abi {
 238         PERF_SAMPLE_REGS_ABI_NONE       = 0,
 239         PERF_SAMPLE_REGS_ABI_32         = 1,
 240         PERF_SAMPLE_REGS_ABI_64         = 2,
 241 };
 242
 243 /*
 244  * Values for the memory transaction event qualifier, mostly for
 245  * abort events. Multiple bits can be set.
 246  */
 247 enum {
 248         PERF_TXN_ELISION        = (1 << 0), /* From elision */
 249         PERF_TXN_TRANSACTION    = (1 << 1), /* From transaction */
 250         PERF_TXN_SYNC           = (1 << 2), /* Instruction is related */
 251         PERF_TXN_ASYNC          = (1 << 3), /* Instruction not related */
 252         PERF_TXN_RETRY          = (1 << 4), /* Retry possible */
 253         PERF_TXN_CONFLICT       = (1 << 5), /* Conflict abort */
 254         PERF_TXN_CAPACITY_WRITE = (1 << 6), /* Capacity write abort */
 255         PERF_TXN_CAPACITY_READ  = (1 << 7), /* Capacity read abort */
 256
 257         PERF_TXN_MAX            = (1 << 8), /* non-ABI */
 258
 259         /* bits 32..63 are reserved for the abort code */
 260
 261         PERF_TXN_ABORT_MASK  = (0xffffffffULL << 32),
 262         PERF_TXN_ABORT_SHIFT = 32,
 263 };
 264
 265 /*
 266  * The format of the data returned by read() on a perf event fd,
 267  * as specified by attr.read_format:
 268  *
 269  * struct read_format {
 270  *      { u64           value;
 271  *        { u64         time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
 272  *        { u64         time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
 273  *        { u64         id;           } && PERF_FORMAT_ID
 274  *      } && !PERF_FORMAT_GROUP
 275  *
 276  *      { u64           nr;
 277  *        { u64         time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
 278  *        { u64         time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
 279  *        { u64         value;
 280  *          { u64       id;           } && PERF_FORMAT_ID
 281  *        }             cntr[nr];
 282  *      } && PERF_FORMAT_GROUP
 283  * };
 284  */
 285 enum perf_event_read_format {
 286         PERF_FORMAT_TOTAL_TIME_ENABLED          = 1U << 0,
 287         PERF_FORMAT_TOTAL_TIME_RUNNING          = 1U << 1,
 288         PERF_FORMAT_ID                          = 1U << 2,
 289         PERF_FORMAT_GROUP                       = 1U << 3,
 290
 291         PERF_FORMAT_MAX = 1U << 4,              /* non-ABI */
 292 };
 293
 294 #define PERF_ATTR_SIZE_VER0     64      /* sizeof first published struct */
 295 #define PERF_ATTR_SIZE_VER1     72      /* add: config2 */
 296 #define PERF_ATTR_SIZE_VER2     80      /* add: branch_sample_type */
 297 #define PERF_ATTR_SIZE_VER3     96      /* add: sample_regs_user */
 298                                         /* add: sample_stack_user */
 299 #define PERF_ATTR_SIZE_VER4     104     /* add: sample_regs_intr */
 300 #define PERF_ATTR_SIZE_VER5     112     /* add: aux_watermark */
 301
 302 /*
 303  * Hardware event_id to monitor via a performance monitoring event:
 304  *
 305  * @sample_max_stack: Max number of frame pointers in a callchain,
 306  *                    should be < /proc/sys/kernel/perf_event_max_stack
 307  */
 308 struct perf_event_attr {
 309
 310         /*
 311          * Major type: hardware/software/tracepoint/etc.
 312          */
 313         __u32                   type;
 314
 315         /*
 316          * Size of the attr structure, for fwd/bwd compat.
 317          */
 318         __u32                   size;
 319
 320         /*
 321          * Type specific configuration information.
 322          */
 323         __u64                   config;
 324
 325         union {
 326                 __u64           sample_period;
 327                 __u64           sample_freq;
 328         };
 329
 330         __u64                   sample_type;
 331         __u64                   read_format;
 332
 333         __u64                   disabled       :  1, /* off by default        */
 334                                 inherit        :  1, /* children inherit it   */
 335                                 pinned         :  1, /* must always be on PMU */
 336                                 exclusive      :  1, /* only group on PMU     */
 337                                 exclude_user   :  1, /* don't count user      */
 338                                 exclude_kernel :  1, /* ditto kernel          */
 339                                 exclude_hv     :  1, /* ditto hypervisor      */
 340                                 exclude_idle   :  1, /* don't count when idle */
 341                                 mmap           :  1, /* include mmap data     */
 342                                 comm           :  1, /* include comm data     */
 343                                 freq           :  1, /* use freq, not period  */
 344                                 inherit_stat   :  1, /* per task counts       */
 345                                 enable_on_exec :  1, /* next exec enables     */
 346                                 task           :  1, /* trace fork/exit       */
 347                                 watermark      :  1, /* wakeup_watermark      */
 348                                 /*
 349                                  * precise_ip:
 350                                  *
 351                                  *  0 - SAMPLE_IP can have arbitrary skid
 352                                  *  1 - SAMPLE_IP must have constant skid
 353                                  *  2 - SAMPLE_IP requested to have 0 skid
 354                                  *  3 - SAMPLE_IP must have 0 skid
 355                                  *
 356                                  *  See also PERF_RECORD_MISC_EXACT_IP
 357                                  */
 358                                 precise_ip     :  2, /* skid constraint       */
 359                                 mmap_data      :  1, /* non-exec mmap data    */
 360                                 sample_id_all  :  1, /* sample_type all events */
 361
 362                                 exclude_host   :  1, /* don't count in host   */
 363                                 exclude_guest  :  1, /* don't count in guest  */
 364
 365                                 exclude_callchain_kernel : 1, /* exclude kernel callchains */
 366                                 exclude_callchain_user   : 1, /* exclude user callchains */
 367                                 mmap2          :  1, /* include mmap with inode data     */
 368                                 comm_exec      :  1, /* flag comm events that are due to an exec */
 369                                 use_clockid    :  1, /* use @clockid for time fields */
 370                                 context_switch :  1, /* context switch data */
 371                                 write_backward :  1, /* Write ring buffer from end to beginning */
 372                                 namespaces     :  1, /* include namespaces data */
 373                                 __reserved_1   : 35;
 374
 375         union {
 376                 __u32           wakeup_events;    /* wakeup every n events */
 377                 __u32           wakeup_watermark; /* bytes before wakeup   */
 378         };
 379
 380         __u32                   bp_type;
 381         union {
 382                 __u64           bp_addr;
 383                 __u64           kprobe_func; /* for perf_kprobe */
 384                 __u64           uprobe_path; /* for perf_uprobe */
 385                 __u64           config1; /* extension of config */
 386         };
 387         union {
 388                 __u64           bp_len;
 389                 __u64           kprobe_addr; /* when kprobe_func == NULL */
 390                 __u64           probe_offset; /* for perf_[k,u]probe */
 391                 __u64           config2; /* extension of config1 */
 392         };
 393         __u64   branch_sample_type; /* enum perf_branch_sample_type */
 394
 395         /*
 396          * Defines set of user regs to dump on samples.
 397          * See asm/perf_regs.h for details.
 398          */
 399         __u64   sample_regs_user;
 400
 401         /*
 402          * Defines size of the user stack to dump on samples.
 403          */
 404         __u32   sample_stack_user;
 405
 406         __s32   clockid;
 407         /*
 408          * Defines set of regs to dump for each sample
 409          * state captured on:
 410          *  - precise = 0: PMU interrupt
 411          *  - precise > 0: sampled instruction
 412          *
 413          * See asm/perf_regs.h for details.
 414          */
 415         __u64   sample_regs_intr;
 416
 417         /*
 418          * Wakeup watermark for AUX area
 419          */
 420         __u32   aux_watermark;
 421         __u16   sample_max_stack;
 422         __u16   __reserved_2;   /* align to __u64 */
 423 };
 424
 425 /*
 426  * Structure used by below PERF_EVENT_IOC_QUERY_BPF command
 427  * to query bpf programs attached to the same perf tracepoint
 428  * as the given perf event.
 429  */
 430 struct perf_event_query_bpf {
 431         /*
 432          * The below ids array length
 433          */
 434         __u32   ids_len;
 435         /*
 436          * Set by the kernel to indicate the number of
 437          * available programs
 438          */
 439         __u32   prog_cnt;
 440         /*
 441          * User provided buffer to store program ids
 442          */
 443         __u32   ids[0];
 444 };
 445
 446 #define perf_flags(attr)        (*(&(attr)->read_format + 1))
 447
 448 /*
 449  * Ioctls that can be done on a perf event fd:
 450  */
 451 #define PERF_EVENT_IOC_ENABLE                   _IO ('$', 0)
 452 #define PERF_EVENT_IOC_DISABLE                  _IO ('$', 1)
 453 #define PERF_EVENT_IOC_REFRESH                  _IO ('$', 2)
 454 #define PERF_EVENT_IOC_RESET                    _IO ('$', 3)
 455 #define PERF_EVENT_IOC_PERIOD                   _IOW('$', 4, __u64)
 456 #define PERF_EVENT_IOC_SET_OUTPUT               _IO ('$', 5)
 457 #define PERF_EVENT_IOC_SET_FILTER               _IOW('$', 6, char *)
 458 #define PERF_EVENT_IOC_ID                       _IOR('$', 7, __u64 *)
 459 #define PERF_EVENT_IOC_SET_BPF                  _IOW('$', 8, __u32)
 460 #define PERF_EVENT_IOC_PAUSE_OUTPUT             _IOW('$', 9, __u32)
 461 #define PERF_EVENT_IOC_QUERY_BPF                _IOWR('$', 10, struct perf_event_query_bpf *)
 462 #define PERF_EVENT_IOC_MODIFY_ATTRIBUTES        _IOW('$', 11, struct perf_event_attr *)
 463
 464 enum perf_event_ioc_flags {
 465         PERF_IOC_FLAG_GROUP             = 1U << 0,
 466 };
 467
 468 /*
 469  * Structure of the page that can be mapped via mmap
 470  */
 471 struct perf_event_mmap_page {
 472         __u32   version;                /* version number of this structure */
 473         __u32   compat_version;         /* lowest version this is compat with */
 474
 475         /*
 476          * Bits needed to read the hw events in user-space.
 477          *
 478          *   u32 seq, time_mult, time_shift, index, width;
 479          *   u64 count, enabled, running;
 480          *   u64 cyc, time_offset;
 481          *   s64 pmc = 0;
 482          *
 483          *   do {
 484          *     seq = pc->lock;
 485          *     barrier()
 486          *
 487          *     enabled = pc->time_enabled;
 488          *     running = pc->time_running;
 489          *
 490          *     if (pc->cap_usr_time && enabled != running) {
 491          *       cyc = rdtsc();
 492          *       time_offset = pc->time_offset;
 493          *       time_mult   = pc->time_mult;
 494          *       time_shift  = pc->time_shift;
 495          *     }
 496          *
 497          *     index = pc->index;
 498          *     count = pc->offset;
 499          *     if (pc->cap_user_rdpmc && index) {
 500          *       width = pc->pmc_width;
 501          *       pmc = rdpmc(index - 1);
 502          *     }
 503          *
 504          *     barrier();
 505          *   } while (pc->lock != seq);
 506          *
 507          * NOTE: for obvious reason this only works on self-monitoring
 508          *       processes.
 509          */
 510         __u32   lock;                   /* seqlock for synchronization */
 511         __u32   index;                  /* hardware event identifier */
 512         __s64   offset;                 /* add to hardware event value */
 513         __u64   time_enabled;           /* time event active */
 514         __u64   time_running;           /* time event on cpu */
 515         union {
 516                 __u64   capabilities;
 517                 struct {
 518                         __u64   cap_bit0                : 1, /* Always 0, deprecated, see commit 860f085b74e9 */
 519                                 cap_bit0_is_deprecated  : 1, /* Always 1, signals that bit 0 is zero */
 520
 521                                 cap_user_rdpmc          : 1, /* The RDPMC instruction can be used to read counts */
 522                                 cap_user_time           : 1, /* The time_* fields are used */
 523                                 cap_user_time_zero      : 1, /* The time_zero field is used */
 524                                 cap_____res             : 59;
 525                 };
 526         };
 527
 528         /*
 529          * If cap_user_rdpmc this field provides the bit-width of the value
 530          * read using the rdpmc() or equivalent instruction. This can be used
 531          * to sign extend the result like:
 532          *
 533          *   pmc <<= 64 - width;
 534          *   pmc >>= 64 - width; // signed shift right
 535          *   count += pmc;
 536          */
 537         __u16   pmc_width;
 538
 539         /*
 540          * If cap_usr_time the below fields can be used to compute the time
 541          * delta since time_enabled (in ns) using rdtsc or similar.
 542          *
 543          *   u64 quot, rem;
 544          *   u64 delta;
 545          *
 546          *   quot = (cyc >> time_shift);
 547          *   rem = cyc & (((u64)1 << time_shift) - 1);
 548          *   delta = time_offset + quot * time_mult +
 549          *              ((rem * time_mult) >> time_shift);
 550          *
 551          * Where time_offset,time_mult,time_shift and cyc are read in the
 552          * seqcount loop described above. This delta can then be added to
 553          * enabled and possible running (if index), improving the scaling:
 554          *
 555          *   enabled += delta;
 556          *   if (index)
 557          *     running += delta;
 558          *
 559          *   quot = count / running;
 560          *   rem  = count % running;
 561          *   count = quot * enabled + (rem * enabled) / running;
 562          */
 563         __u16   time_shift;
 564         __u32   time_mult;
 565         __u64   time_offset;
 566         /*
 567          * If cap_usr_time_zero, the hardware clock (e.g. TSC) can be calculated
 568          * from sample timestamps.
 569          *
 570          *   time = timestamp - time_zero;
 571          *   quot = time / time_mult;
 572          *   rem  = time % time_mult;
 573          *   cyc = (quot << time_shift) + (rem << time_shift) / time_mult;
 574          *
 575          * And vice versa:
 576          *
 577          *   quot = cyc >> time_shift;
 578          *   rem  = cyc & (((u64)1 << time_shift) - 1);
 579          *   timestamp = time_zero + quot * time_mult +
 580          *               ((rem * time_mult) >> time_shift);
 581          */
 582         __u64   time_zero;
 583         __u32   size;                   /* Header size up to __reserved[] fields. */
 584
 585                 /*
 586                  * Hole for extension of the self monitor capabilities
 587                  */
 588
 589         __u8    __reserved[118*8+4];    /* align to 1k. */
 590
 591         /*
 592          * Control data for the mmap() data buffer.
 593          *
 594          * User-space reading the @data_head value should issue an smp_rmb(),
 595          * after reading this value.
 596          *
 597          * When the mapping is PROT_WRITE the @data_tail value should be
 598          * written by userspace to reflect the last read data, after issueing
 599          * an smp_mb() to separate the data read from the ->data_tail store.
 600          * In this case the kernel will not over-write unread data.
 601          *
 602          * See perf_output_put_handle() for the data ordering.
 603          *
 604          * data_{offset,size} indicate the location and size of the perf record
 605          * buffer within the mmapped area.
 606          */
 607         __u64   data_head;              /* head in the data section */
 608         __u64   data_tail;              /* user-space written tail */
 609         __u64   data_offset;            /* where the buffer starts */
 610         __u64   data_size;              /* data buffer size */
 611
 612         /*
 613          * AUX area is defined by aux_{offset,size} fields that should be set
 614          * by the userspace, so that
 615          *
 616          *   aux_offset >= data_offset + data_size
 617          *
 618          * prior to mmap()ing it. Size of the mmap()ed area should be aux_size.
 619          *
 620          * Ring buffer pointers aux_{head,tail} have the same semantics as
 621          * data_{head,tail} and same ordering rules apply.
 622          */
 623         __u64   aux_head;
 624         __u64   aux_tail;
 625         __u64   aux_offset;
 626         __u64   aux_size;
 627 };
 628
 629 #define PERF_RECORD_MISC_CPUMODE_MASK           (7 << 0)
 630 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN        (0 << 0)
 631 #define PERF_RECORD_MISC_KERNEL                 (1 << 0)
 632 #define PERF_RECORD_MISC_USER                   (2 << 0)
 633 #define PERF_RECORD_MISC_HYPERVISOR             (3 << 0)
 634 #define PERF_RECORD_MISC_GUEST_KERNEL           (4 << 0)
 635 #define PERF_RECORD_MISC_GUEST_USER             (5 << 0)
 636
 637 /*
 638  * Indicates that /proc/PID/maps parsing are truncated by time out.
 639  */
 640 #define PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT (1 << 12)
 641 /*
 642  * Following PERF_RECORD_MISC_* are used on different
 643  * events, so can reuse the same bit position:
 644  *
 645  *   PERF_RECORD_MISC_MMAP_DATA  - PERF_RECORD_MMAP* events
 646  *   PERF_RECORD_MISC_COMM_EXEC  - PERF_RECORD_COMM event
 647  *   PERF_RECORD_MISC_SWITCH_OUT - PERF_RECORD_SWITCH* events
 648  */
 649 #define PERF_RECORD_MISC_MMAP_DATA              (1 << 13)
 650 #define PERF_RECORD_MISC_COMM_EXEC              (1 << 13)
 651 #define PERF_RECORD_MISC_SWITCH_OUT             (1 << 13)
 652 /*
 653  * These PERF_RECORD_MISC_* flags below are safely reused
 654  * for the following events:
 655  *
 656  *   PERF_RECORD_MISC_EXACT_IP           - PERF_RECORD_SAMPLE of precise events
 657  *   PERF_RECORD_MISC_SWITCH_OUT_PREEMPT - PERF_RECORD_SWITCH* events
 658  *
 659  *
 660  * PERF_RECORD_MISC_EXACT_IP:
 661  *   Indicates that the content of PERF_SAMPLE_IP points to
 662  *   the actual instruction that triggered the event. See also
 663  *   perf_event_attr::precise_ip.
 664  *
 665  * PERF_RECORD_MISC_SWITCH_OUT_PREEMPT:
 666  *   Indicates that thread was preempted in TASK_RUNNING state.
 667  */
 668 #define PERF_RECORD_MISC_EXACT_IP               (1 << 14)
 669 #define PERF_RECORD_MISC_SWITCH_OUT_PREEMPT     (1 << 14)
 670 /*
 671  * Reserve the last bit to indicate some extended misc field
 672  */
 673 #define PERF_RECORD_MISC_EXT_RESERVED           (1 << 15)
 674
 675 struct perf_event_header {
 676         __u32   type;
 677         __u16   misc;
 678         __u16   size;
 679 };
 680
 681 struct perf_ns_link_info {
 682         __u64   dev;
 683         __u64   ino;
 684 };
 685
 686 enum {
 687         NET_NS_INDEX            = 0,
 688         UTS_NS_INDEX            = 1,
 689         IPC_NS_INDEX            = 2,
 690         PID_NS_INDEX            = 3,
 691         USER_NS_INDEX           = 4,
 692         MNT_NS_INDEX            = 5,
 693         CGROUP_NS_INDEX         = 6,
 694
 695         NR_NAMESPACES,          /* number of available namespaces */
 696 };
 697
 698 enum perf_event_type {
 699
 700         /*
 701          * If perf_event_attr.sample_id_all is set then all event types will
 702          * have the sample_type selected fields related to where/when
 703          * (identity) an event took place (TID, TIME, ID, STREAM_ID, CPU,
 704          * IDENTIFIER) described in PERF_RECORD_SAMPLE below, it will be stashed
 705          * just after the perf_event_header and the fields already present for
 706          * the existing fields, i.e. at the end of the payload. That way a newer
 707          * perf.data file will be supported by older perf tools, with these new
 708          * optional fields being ignored.
 709          *
 710          * struct sample_id {
 711          *      { u32                   pid, tid; } && PERF_SAMPLE_TID
 712          *      { u64                   time;     } && PERF_SAMPLE_TIME
 713          *      { u64                   id;       } && PERF_SAMPLE_ID
 714          *      { u64                   stream_id;} && PERF_SAMPLE_STREAM_ID
 715          *      { u32                   cpu, res; } && PERF_SAMPLE_CPU
 716          *      { u64                   id;       } && PERF_SAMPLE_IDENTIFIER
 717          * } && perf_event_attr::sample_id_all
 718          *
 719          * Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID.  The
 720          * advantage of PERF_SAMPLE_IDENTIFIER is that its position is fixed
 721          * relative to header.size.
 722          */
 723
 724         /*
 725          * The MMAP events record the PROT_EXEC mappings so that we can
 726          * correlate userspace IPs to code. They have the following structure:
 727          *
 728          * struct {
 729          *      struct perf_event_header        header;
 730          *
 731          *      u32                             pid, tid;
 732          *      u64                             addr;
 733          *      u64                             len;
 734          *      u64                             pgoff;
 735          *      char                            filename[];
 736          *      struct sample_id                sample_id;
 737          * };
 738          */
 739         PERF_RECORD_MMAP                        = 1,
 740
 741         /*
 742          * struct {
 743          *      struct perf_event_header        header;
 744          *      u64                             id;
 745          *      u64                             lost;
 746          *      struct sample_id                sample_id;
 747          * };
 748          */
 749         PERF_RECORD_LOST                        = 2,
 750
 751         /*
 752          * struct {
 753          *      struct perf_event_header        header;
 754          *
 755          *      u32                             pid, tid;
 756          *      char                            comm[];
 757          *      struct sample_id                sample_id;
 758          * };
 759          */
 760         PERF_RECORD_COMM                        = 3,
 761
 762         /*
 763          * struct {
 764          *      struct perf_event_header        header;
 765          *      u32                             pid, ppid;
 766          *      u32                             tid, ptid;
 767          *      u64                             time;
 768          *      struct sample_id                sample_id;
 769          * };
 770          */
 771         PERF_RECORD_EXIT                        = 4,
 772
 773         /*
 774          * struct {
 775          *      struct perf_event_header        header;
 776          *      u64                             time;
 777          *      u64                             id;
 778          *      u64                             stream_id;
 779          *      struct sample_id                sample_id;
 780          * };
 781          */
 782         PERF_RECORD_THROTTLE                    = 5,
 783         PERF_RECORD_UNTHROTTLE                  = 6,
 784
 785         /*
 786          * struct {
 787          *      struct perf_event_header        header;
 788          *      u32                             pid, ppid;
 789          *      u32                             tid, ptid;
 790          *      u64                             time;
 791          *      struct sample_id                sample_id;
 792          * };
 793          */
 794         PERF_RECORD_FORK                        = 7,
 795
 796         /*
 797          * struct {
 798          *      struct perf_event_header        header;
 799          *      u32                             pid, tid;
 800          *
 801          *      struct read_format              values;
 802          *      struct sample_id                sample_id;
 803          * };
 804          */
 805         PERF_RECORD_READ                        = 8,
 806
 807         /*
 808          * struct {
 809          *      struct perf_event_header        header;
 810          *
 811          *      #
 812          *      # Note that PERF_SAMPLE_IDENTIFIER duplicates PERF_SAMPLE_ID.
 813          *      # The advantage of PERF_SAMPLE_IDENTIFIER is that its position
 814          *      # is fixed relative to header.
 815          *      #
 816          *
 817          *      { u64                   id;       } && PERF_SAMPLE_IDENTIFIER
 818          *      { u64                   ip;       } && PERF_SAMPLE_IP
 819          *      { u32                   pid, tid; } && PERF_SAMPLE_TID
 820          *      { u64                   time;     } && PERF_SAMPLE_TIME
 821          *      { u64                   addr;     } && PERF_SAMPLE_ADDR
 822          *      { u64                   id;       } && PERF_SAMPLE_ID
 823          *      { u64                   stream_id;} && PERF_SAMPLE_STREAM_ID
 824          *      { u32                   cpu, res; } && PERF_SAMPLE_CPU
 825          *      { u64                   period;   } && PERF_SAMPLE_PERIOD
 826          *
 827          *      { struct read_format    values;   } && PERF_SAMPLE_READ
 828          *
 829          *      { u64                   nr,
 830          *        u64                   ips[nr];  } && PERF_SAMPLE_CALLCHAIN
 831          *
 832          *      #
 833          *      # The RAW record below is opaque data wrt the ABI
 834          *      #
 835          *      # That is, the ABI doesn't make any promises wrt to
 836          *      # the stability of its content, it may vary depending
 837          *      # on event, hardware, kernel version and phase of
 838          *      # the moon.
 839          *      #
 840          *      # In other words, PERF_SAMPLE_RAW contents are not an ABI.
 841          *      #
 842          *
 843          *      { u32                   size;
 844          *        char                  data[size];}&& PERF_SAMPLE_RAW
 845          *
 846          *      { u64                   nr;
 847          *        { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK
 848          *
 849          *      { u64                   abi; # enum perf_sample_regs_abi
 850          *        u64                   regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER
 851          *
 852          *      { u64                   size;
 853          *        char                  data[size];
 854          *        u64                   dyn_size; } && PERF_SAMPLE_STACK_USER
 855          *
 856          *      { u64                   weight;   } && PERF_SAMPLE_WEIGHT
 857          *      { u64                   data_src; } && PERF_SAMPLE_DATA_SRC
 858          *      { u64                   transaction; } && PERF_SAMPLE_TRANSACTION
 859          *      { u64                   abi; # enum perf_sample_regs_abi
 860          *        u64                   regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR
 861          *      { u64                   phys_addr;} && PERF_SAMPLE_PHYS_ADDR
 862          * };
 863          */
 864         PERF_RECORD_SAMPLE                      = 9,
 865
 866         /*
 867          * The MMAP2 records are an augmented version of MMAP, they add
 868          * maj, min, ino numbers to be used to uniquely identify each mapping
 869          *
 870          * struct {
 871          *      struct perf_event_header        header;
 872          *
 873          *      u32                             pid, tid;
 874          *      u64                             addr;
 875          *      u64                             len;
 876          *      u64                             pgoff;
 877          *      u32                             maj;
 878          *      u32                             min;
 879          *      u64                             ino;
 880          *      u64                             ino_generation;
 881          *      u32                             prot, flags;
 882          *      char                            filename[];
 883          *      struct sample_id                sample_id;
 884          * };
 885          */
 886         PERF_RECORD_MMAP2                       = 10,
 887
 888         /*
 889          * Records that new data landed in the AUX buffer part.
 890          *
 891          * struct {
 892          *      struct perf_event_header        header;
 893          *
 894          *      u64                             aux_offset;
 895          *      u64                             aux_size;
 896          *      u64                             flags;
 897          *      struct sample_id                sample_id;
 898          * };
 899          */
 900         PERF_RECORD_AUX                         = 11,
 901
 902         /*
 903          * Indicates that instruction trace has started
 904          *
 905          * struct {
 906          *      struct perf_event_header        header;
 907          *      u32                             pid;
 908          *      u32                             tid;
 909          *      struct sample_id                sample_id;
 910          * };
 911          */
 912         PERF_RECORD_ITRACE_START                = 12,
 913
 914         /*
 915          * Records the dropped/lost sample number.
 916          *
 917          * struct {
 918          *      struct perf_event_header        header;
 919          *
 920          *      u64                             lost;
 921          *      struct sample_id                sample_id;
 922          * };
 923          */
 924         PERF_RECORD_LOST_SAMPLES                = 13,
 925
 926         /*
 927          * Records a context switch in or out (flagged by
 928          * PERF_RECORD_MISC_SWITCH_OUT). See also
 929          * PERF_RECORD_SWITCH_CPU_WIDE.
 930          *
 931          * struct {
 932          *      struct perf_event_header        header;
 933          *      struct sample_id                sample_id;
 934          * };
 935          */
 936         PERF_RECORD_SWITCH                      = 14,
 937
 938         /*
 939          * CPU-wide version of PERF_RECORD_SWITCH with next_prev_pid and
 940          * next_prev_tid that are the next (switching out) or previous
 941          * (switching in) pid/tid.
 942          *
 943          * struct {
 944          *      struct perf_event_header        header;
 945          *      u32                             next_prev_pid;
 946          *      u32                             next_prev_tid;
 947          *      struct sample_id                sample_id;
 948          * };
 949          */
 950         PERF_RECORD_SWITCH_CPU_WIDE             = 15,
 951
 952         /*
 953          * struct {
 954          *      struct perf_event_header        header;
 955          *      u32                             pid;
 956          *      u32                             tid;
 957          *      u64                             nr_namespaces;
 958          *      { u64                           dev, inode; } [nr_namespaces];
 959          *      struct sample_id                sample_id;
 960          * };
 961          */
 962         PERF_RECORD_NAMESPACES                  = 16,
 963
 964         PERF_RECORD_MAX,                        /* non-ABI */
 965 };
 966
 967 #define PERF_MAX_STACK_DEPTH            127
 968 #define PERF_MAX_CONTEXTS_PER_STACK       8
 969
 970 enum perf_callchain_context {
 971         PERF_CONTEXT_HV                 = (__u64)-32,
 972         PERF_CONTEXT_KERNEL             = (__u64)-128,
 973         PERF_CONTEXT_USER               = (__u64)-512,
 974
 975         PERF_CONTEXT_GUEST              = (__u64)-2048,
 976         PERF_CONTEXT_GUEST_KERNEL       = (__u64)-2176,
 977         PERF_CONTEXT_GUEST_USER         = (__u64)-2560,
 978
 979         PERF_CONTEXT_MAX                = (__u64)-4095,
 980 };
 981
 982 /**
 983  * PERF_RECORD_AUX::flags bits
 984  */
 985 #define PERF_AUX_FLAG_TRUNCATED         0x01    /* record was truncated to fit */
 986 #define PERF_AUX_FLAG_OVERWRITE         0x02    /* snapshot from overwrite mode */
 987 #define PERF_AUX_FLAG_PARTIAL           0x04    /* record contains gaps */
 988 #define PERF_AUX_FLAG_COLLISION         0x08    /* sample collided with another */
 989
 990 #define PERF_FLAG_FD_NO_GROUP           (1UL << 0)
 991 #define PERF_FLAG_FD_OUTPUT             (1UL << 1)
 992 #define PERF_FLAG_PID_CGROUP            (1UL << 2) /* pid=cgroup id, per-cpu mode only */
 993 #define PERF_FLAG_FD_CLOEXEC            (1UL << 3) /* O_CLOEXEC */
 994
 995 #if defined(__LITTLE_ENDIAN_BITFIELD)
 996 union perf_mem_data_src {
 997         __u64 val;
 998         struct {
 999                 __u64   mem_op:5,       /* type of opcode */
1000                         mem_lvl:14,     /* memory hierarchy level */
1001                         mem_snoop:5,    /* snoop mode */
1002                         mem_lock:2,     /* lock instr */
1003                         mem_dtlb:7,     /* tlb access */
1004                         mem_lvl_num:4,  /* memory hierarchy level number */
1005                         mem_remote:1,   /* remote */
1006                         mem_snoopx:2,   /* snoop mode, ext */
1007                         mem_rsvd:24;
1008         };
1009 };
1010 #elif defined(__BIG_ENDIAN_BITFIELD)
1011 union perf_mem_data_src {
1012         __u64 val;
1013         struct {
1014                 __u64   mem_rsvd:24,
1015                         mem_snoopx:2,   /* snoop mode, ext */
1016                         mem_remote:1,   /* remote */
1017                         mem_lvl_num:4,  /* memory hierarchy level number */
1018                         mem_dtlb:7,     /* tlb access */
1019                         mem_lock:2,     /* lock instr */
1020                         mem_snoop:5,    /* snoop mode */
1021                         mem_lvl:14,     /* memory hierarchy level */
1022                         mem_op:5;       /* type of opcode */
1023         };
1024 };
1025 #else
1026 #error "Unknown endianness"
1027 #endif
1028
1029 /* type of opcode (load/store/prefetch,code) */
1030 #define PERF_MEM_OP_NA          0x01 /* not available */
1031 #define PERF_MEM_OP_LOAD        0x02 /* load instruction */
1032 #define PERF_MEM_OP_STORE       0x04 /* store instruction */
1033 #define PERF_MEM_OP_PFETCH      0x08 /* prefetch */
1034 #define PERF_MEM_OP_EXEC        0x10 /* code (execution) */
1035 #define PERF_MEM_OP_SHIFT       0
1036
1037 /* memory hierarchy (memory level, hit or miss) */
1038 #define PERF_MEM_LVL_NA         0x01  /* not available */
1039 #define PERF_MEM_LVL_HIT        0x02  /* hit level */
1040 #define PERF_MEM_LVL_MISS       0x04  /* miss level  */
1041 #define PERF_MEM_LVL_L1         0x08  /* L1 */
1042 #define PERF_MEM_LVL_LFB        0x10  /* Line Fill Buffer */
1043 #define PERF_MEM_LVL_L2         0x20  /* L2 */
1044 #define PERF_MEM_LVL_L3         0x40  /* L3 */
1045 #define PERF_MEM_LVL_LOC_RAM    0x80  /* Local DRAM */
1046 #define PERF_MEM_LVL_REM_RAM1   0x100 /* Remote DRAM (1 hop) */
1047 #define PERF_MEM_LVL_REM_RAM2   0x200 /* Remote DRAM (2 hops) */
1048 #define PERF_MEM_LVL_REM_CCE1   0x400 /* Remote Cache (1 hop) */
1049 #define PERF_MEM_LVL_REM_CCE2   0x800 /* Remote Cache (2 hops) */
1050 #define PERF_MEM_LVL_IO         0x1000 /* I/O memory */
1051 #define PERF_MEM_LVL_UNC        0x2000 /* Uncached memory */
1052 #define PERF_MEM_LVL_SHIFT      5
1053
1054 #define PERF_MEM_REMOTE_REMOTE  0x01  /* Remote */
1055 #define PERF_MEM_REMOTE_SHIFT   37
1056
1057 #define PERF_MEM_LVLNUM_L1      0x01 /* L1 */
1058 #define PERF_MEM_LVLNUM_L2      0x02 /* L2 */
1059 #define PERF_MEM_LVLNUM_L3      0x03 /* L3 */
1060 #define PERF_MEM_LVLNUM_L4      0x04 /* L4 */
1061 /* 5-0xa available */
1062 #define PERF_MEM_LVLNUM_ANY_CACHE 0x0b /* Any cache */
1063 #define PERF_MEM_LVLNUM_LFB     0x0c /* LFB */
1064 #define PERF_MEM_LVLNUM_RAM     0x0d /* RAM */
1065 #define PERF_MEM_LVLNUM_PMEM    0x0e /* PMEM */
1066 #define PERF_MEM_LVLNUM_NA      0x0f /* N/A */
1067
1068 #define PERF_MEM_LVLNUM_SHIFT   33
1069
1070 /* snoop mode */
1071 #define PERF_MEM_SNOOP_NA       0x01 /* not available */
1072 #define PERF_MEM_SNOOP_NONE     0x02 /* no snoop */
1073 #define PERF_MEM_SNOOP_HIT      0x04 /* snoop hit */
1074 #define PERF_MEM_SNOOP_MISS     0x08 /* snoop miss */
1075 #define PERF_MEM_SNOOP_HITM     0x10 /* snoop hit modified */
1076 #define PERF_MEM_SNOOP_SHIFT    19
1077
1078 #define PERF_MEM_SNOOPX_FWD     0x01 /* forward */
1079 /* 1 free */
1080 #define PERF_MEM_SNOOPX_SHIFT   37
1081
1082 /* locked instruction */
1083 #define PERF_MEM_LOCK_NA        0x01 /* not available */
1084 #define PERF_MEM_LOCK_LOCKED    0x02 /* locked transaction */
1085 #define PERF_MEM_LOCK_SHIFT     24
1086
1087 /* TLB access */
1088 #define PERF_MEM_TLB_NA         0x01 /* not available */
1089 #define PERF_MEM_TLB_HIT        0x02 /* hit level */
1090 #define PERF_MEM_TLB_MISS       0x04 /* miss level */
1091 #define PERF_MEM_TLB_L1         0x08 /* L1 */
1092 #define PERF_MEM_TLB_L2         0x10 /* L2 */
1093 #define PERF_MEM_TLB_WK         0x20 /* Hardware Walker*/
1094 #define PERF_MEM_TLB_OS         0x40 /* OS fault handler */
1095 #define PERF_MEM_TLB_SHIFT      26
1096
1097 #define PERF_MEM_S(a, s) \
1098         (((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)
1099
1100 /*
1101  * single taken branch record layout:
1102  *
1103  *      from: source instruction (may not always be a branch insn)
1104  *        to: branch target
1105  *   mispred: branch target was mispredicted
1106  * predicted: branch target was predicted
1107  *
1108  * support for mispred, predicted is optional. In case it
1109  * is not supported mispred = predicted = 0.
1110  *
1111  *     in_tx: running in a hardware transaction
1112  *     abort: aborting a hardware transaction
1113  *    cycles: cycles from last branch (or 0 if not supported)
1114  *      type: branch type
1115  */
1116 struct perf_branch_entry {
1117         __u64   from;
1118         __u64   to;
1119         __u64   mispred:1,  /* target mispredicted */
1120                 predicted:1,/* target predicted */
1121                 in_tx:1,    /* in transaction */
1122                 abort:1,    /* transaction abort */
1123                 cycles:16,  /* cycle count to last branch */
1124                 type:4,     /* branch type */
1125                 reserved:40;
1126 };
1127
1128 #endif /* _UAPI_LINUX_PERF_EVENT_H */