include/uapi/linux/perf_event.h

   1 /*
   2  * Performance events:
   3  *
   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
   7  *
   8  * Data type definitions, declarations, prototypes.
   9  *
  10  *    Started by: Thomas Gleixner and Ingo Molnar
  11  *
  12  * For licencing details see kernel-base/COPYING
  13  */
  14 #ifndef _UAPI_LINUX_PERF_EVENT_H
  15 #define _UAPI_LINUX_PERF_EVENT_H
  16
  17 #include <linux/types.h>
  18 #include <linux/ioctl.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * User-space ABI bits:
  23  */
  24
  25 /*
  26  * attr.type
  27  */
  28 enum perf_type_id {
  29         PERF_TYPE_HARDWARE                      = 0,
  30         PERF_TYPE_SOFTWARE                      = 1,
  31         PERF_TYPE_TRACEPOINT                    = 2,
  32         PERF_TYPE_HW_CACHE                      = 3,
  33         PERF_TYPE_RAW                           = 4,
  34         PERF_TYPE_BREAKPOINT                    = 5,
  35
  36         PERF_TYPE_MAX,                          /* non-ABI */
  37 };
  38
  39 /*
  40  * Generalized performance event event_id types, used by the
  41  * attr.event_id parameter of the sys_perf_event_open()
  42  * syscall:
  43  */
  44 enum perf_hw_id {
  45         /*
  46          * Common hardware events, generalized by the kernel:
  47          */
  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,
  58
  59         PERF_COUNT_HW_MAX,                      /* non-ABI */
  60 };
  61
  62 /*
  63  * Generalized hardware cache events:
  64  *
  65  *       { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
  66  *       { read, write, prefetch } x
  67  *       { accesses, misses }
  68  */
  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,
  77
  78         PERF_COUNT_HW_CACHE_MAX,                /* non-ABI */
  79 };
  80
  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,
  85
  86         PERF_COUNT_HW_CACHE_OP_MAX,             /* non-ABI */
  87 };
  88
  89 enum perf_hw_cache_op_result_id {
  90         PERF_COUNT_HW_CACHE_RESULT_ACCESS       = 0,
  91         PERF_COUNT_HW_CACHE_RESULT_MISS         = 1,
  92
  93         PERF_COUNT_HW_CACHE_RESULT_MAX,         /* non-ABI */
  94 };
  95
  96 /*
  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
 100  * well):
 101  */
 102 enum perf_sw_ids {
 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
 113         PERF_COUNT_SW_MAX,                      /* non-ABI */
 114 };
 115
 116 /*
 117  * Bits that can be set in attr.sample_type to request information
 118  * in the overflow packets.
 119  */
 120 enum perf_event_sample_format {
 121         PERF_SAMPLE_IP                          = 1U << 0,
 122         PERF_SAMPLE_TID                         = 1U << 1,
 123         PERF_SAMPLE_TIME                        = 1U << 2,
 124         PERF_SAMPLE_ADDR                        = 1U << 3,
 125         PERF_SAMPLE_READ                        = 1U << 4,
 126         PERF_SAMPLE_CALLCHAIN                   = 1U << 5,
 127         PERF_SAMPLE_ID                          = 1U << 6,
 128         PERF_SAMPLE_CPU                         = 1U << 7,
 129         PERF_SAMPLE_PERIOD                      = 1U << 8,
 130         PERF_SAMPLE_STREAM_ID                   = 1U << 9,
 131         PERF_SAMPLE_RAW                         = 1U << 10,
 132         PERF_SAMPLE_BRANCH_STACK                = 1U << 11,
 133         PERF_SAMPLE_REGS_USER                   = 1U << 12,
 134         PERF_SAMPLE_STACK_USER                  = 1U << 13,
 135
 136         PERF_SAMPLE_MAX = 1U << 14,             /* non-ABI */
 137 };
 138
 139 /*
 140  * values to program into branch_sample_type when PERF_SAMPLE_BRANCH is set
 141  *
 142  * If the user does not pass priv level information via branch_sample_type,
 143  * the kernel uses the event's priv level. Branch and event priv levels do
 144  * not have to match. Branch priv level is checked for permissions.
 145  *
 146  * The branch types can be combined, however BRANCH_ANY covers all types
 147  * of branches and therefore it supersedes all the other types.
 148  */
 149 enum perf_branch_sample_type {
 150         PERF_SAMPLE_BRANCH_USER         = 1U << 0, /* user branches */
 151         PERF_SAMPLE_BRANCH_KERNEL       = 1U << 1, /* kernel branches */
 152         PERF_SAMPLE_BRANCH_HV           = 1U << 2, /* hypervisor branches */
 153
 154         PERF_SAMPLE_BRANCH_ANY          = 1U << 3, /* any branch types */
 155         PERF_SAMPLE_BRANCH_ANY_CALL     = 1U << 4, /* any call branch */
 156         PERF_SAMPLE_BRANCH_ANY_RETURN   = 1U << 5, /* any return branch */
 157         PERF_SAMPLE_BRANCH_IND_CALL     = 1U << 6, /* indirect calls */
 158
 159         PERF_SAMPLE_BRANCH_MAX          = 1U << 7, /* non-ABI */
 160 };
 161
 162 #define PERF_SAMPLE_BRANCH_PLM_ALL \
 163         (PERF_SAMPLE_BRANCH_USER|\
 164          PERF_SAMPLE_BRANCH_KERNEL|\
 165          PERF_SAMPLE_BRANCH_HV)
 166
 167 /*
 168  * Values to determine ABI of the registers dump.
 169  */
 170 enum perf_sample_regs_abi {
 171         PERF_SAMPLE_REGS_ABI_NONE       = 0,
 172         PERF_SAMPLE_REGS_ABI_32         = 1,
 173         PERF_SAMPLE_REGS_ABI_64         = 2,
 174 };
 175
 176 /*
 177  * The format of the data returned by read() on a perf event fd,
 178  * as specified by attr.read_format:
 179  *
 180  * struct read_format {
 181  *      { u64           value;
 182  *        { u64         time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
 183  *        { u64         time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
 184  *        { u64         id;           } && PERF_FORMAT_ID
 185  *      } && !PERF_FORMAT_GROUP
 186  *
 187  *      { u64           nr;
 188  *        { u64         time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
 189  *        { u64         time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
 190  *        { u64         value;
 191  *          { u64       id;           } && PERF_FORMAT_ID
 192  *        }             cntr[nr];
 193  *      } && PERF_FORMAT_GROUP
 194  * };
 195  */
 196 enum perf_event_read_format {
 197         PERF_FORMAT_TOTAL_TIME_ENABLED          = 1U << 0,
 198         PERF_FORMAT_TOTAL_TIME_RUNNING          = 1U << 1,
 199         PERF_FORMAT_ID                          = 1U << 2,
 200         PERF_FORMAT_GROUP                       = 1U << 3,
 201
 202         PERF_FORMAT_MAX = 1U << 4,              /* non-ABI */
 203 };
 204
 205 #define PERF_ATTR_SIZE_VER0     64      /* sizeof first published struct */
 206 #define PERF_ATTR_SIZE_VER1     72      /* add: config2 */
 207 #define PERF_ATTR_SIZE_VER2     80      /* add: branch_sample_type */
 208 #define PERF_ATTR_SIZE_VER3     96      /* add: sample_regs_user */
 209                                         /* add: sample_stack_user */
 210
 211 /*
 212  * Hardware event_id to monitor via a performance monitoring event:
 213  */
 214 struct perf_event_attr {
 215
 216         /*
 217          * Major type: hardware/software/tracepoint/etc.
 218          */
 219         __u32                   type;
 220
 221         /*
 222          * Size of the attr structure, for fwd/bwd compat.
 223          */
 224         __u32                   size;
 225
 226         /*
 227          * Type specific configuration information.
 228          */
 229         __u64                   config;
 230
 231         union {
 232                 __u64           sample_period;
 233                 __u64           sample_freq;
 234         };
 235
 236         __u64                   sample_type;
 237         __u64                   read_format;
 238
 239         __u64                   disabled       :  1, /* off by default        */
 240                                 inherit        :  1, /* children inherit it   */
 241                                 pinned         :  1, /* must always be on PMU */
 242                                 exclusive      :  1, /* only group on PMU     */
 243                                 exclude_user   :  1, /* don't count user      */
 244                                 exclude_kernel :  1, /* ditto kernel          */
 245                                 exclude_hv     :  1, /* ditto hypervisor      */
 246                                 exclude_idle   :  1, /* don't count when idle */
 247                                 mmap           :  1, /* include mmap data     */
 248                                 comm           :  1, /* include comm data     */
 249                                 freq           :  1, /* use freq, not period  */
 250                                 inherit_stat   :  1, /* per task counts       */
 251                                 enable_on_exec :  1, /* next exec enables     */
 252                                 task           :  1, /* trace fork/exit       */
 253                                 watermark      :  1, /* wakeup_watermark      */
 254                                 /*
 255                                  * precise_ip:
 256                                  *
 257                                  *  0 - SAMPLE_IP can have arbitrary skid
 258                                  *  1 - SAMPLE_IP must have constant skid
 259                                  *  2 - SAMPLE_IP requested to have 0 skid
 260                                  *  3 - SAMPLE_IP must have 0 skid
 261                                  *
 262                                  *  See also PERF_RECORD_MISC_EXACT_IP
 263                                  */
 264                                 precise_ip     :  2, /* skid constraint       */
 265                                 mmap_data      :  1, /* non-exec mmap data    */
 266                                 sample_id_all  :  1, /* sample_type all events */
 267
 268                                 exclude_host   :  1, /* don't count in host   */
 269                                 exclude_guest  :  1, /* don't count in guest  */
 270
 271                                 exclude_callchain_kernel : 1, /* exclude kernel callchains */
 272                                 exclude_callchain_user   : 1, /* exclude user callchains */
 273
 274                                 __reserved_1   : 41;
 275
 276         union {
 277                 __u32           wakeup_events;    /* wakeup every n events */
 278                 __u32           wakeup_watermark; /* bytes before wakeup   */
 279         };
 280
 281         __u32                   bp_type;
 282         union {
 283                 __u64           bp_addr;
 284                 __u64           config1; /* extension of config */
 285         };
 286         union {
 287                 __u64           bp_len;
 288                 __u64           config2; /* extension of config1 */
 289         };
 290         __u64   branch_sample_type; /* enum perf_branch_sample_type */
 291
 292         /*
 293          * Defines set of user regs to dump on samples.
 294          * See asm/perf_regs.h for details.
 295          */
 296         __u64   sample_regs_user;
 297
 298         /*
 299          * Defines size of the user stack to dump on samples.
 300          */
 301         __u32   sample_stack_user;
 302
 303         /* Align to u64. */
 304         __u32   __reserved_2;
 305 };
 306
 307 #define perf_flags(attr)        (*(&(attr)->read_format + 1))
 308
 309 /*
 310  * Ioctls that can be done on a perf event fd:
 311  */
 312 #define PERF_EVENT_IOC_ENABLE           _IO ('$', 0)
 313 #define PERF_EVENT_IOC_DISABLE          _IO ('$', 1)
 314 #define PERF_EVENT_IOC_REFRESH          _IO ('$', 2)
 315 #define PERF_EVENT_IOC_RESET            _IO ('$', 3)
 316 #define PERF_EVENT_IOC_PERIOD           _IOW('$', 4, __u64)
 317 #define PERF_EVENT_IOC_SET_OUTPUT       _IO ('$', 5)
 318 #define PERF_EVENT_IOC_SET_FILTER       _IOW('$', 6, char *)
 319
 320 enum perf_event_ioc_flags {
 321         PERF_IOC_FLAG_GROUP             = 1U << 0,
 322 };
 323
 324 /*
 325  * Structure of the page that can be mapped via mmap
 326  */
 327 struct perf_event_mmap_page {
 328         __u32   version;                /* version number of this structure */
 329         __u32   compat_version;         /* lowest version this is compat with */
 330
 331         /*
 332          * Bits needed to read the hw events in user-space.
 333          *
 334          *   u32 seq, time_mult, time_shift, idx, width;
 335          *   u64 count, enabled, running;
 336          *   u64 cyc, time_offset;
 337          *   s64 pmc = 0;
 338          *
 339          *   do {
 340          *     seq = pc->lock;
 341          *     barrier()
 342          *
 343          *     enabled = pc->time_enabled;
 344          *     running = pc->time_running;
 345          *
 346          *     if (pc->cap_usr_time && enabled != running) {
 347          *       cyc = rdtsc();
 348          *       time_offset = pc->time_offset;
 349          *       time_mult   = pc->time_mult;
 350          *       time_shift  = pc->time_shift;
 351          *     }
 352          *
 353          *     idx = pc->index;
 354          *     count = pc->offset;
 355          *     if (pc->cap_usr_rdpmc && idx) {
 356          *       width = pc->pmc_width;
 357          *       pmc = rdpmc(idx - 1);
 358          *     }
 359          *
 360          *     barrier();
 361          *   } while (pc->lock != seq);
 362          *
 363          * NOTE: for obvious reason this only works on self-monitoring
 364          *       processes.
 365          */
 366         __u32   lock;                   /* seqlock for synchronization */
 367         __u32   index;                  /* hardware event identifier */
 368         __s64   offset;                 /* add to hardware event value */
 369         __u64   time_enabled;           /* time event active */
 370         __u64   time_running;           /* time event on cpu */
 371         union {
 372                 __u64   capabilities;
 373                 __u64   cap_usr_time  : 1,
 374                         cap_usr_rdpmc : 1,
 375                         cap_____res   : 62;
 376         };
 377
 378         /*
 379          * If cap_usr_rdpmc this field provides the bit-width of the value
 380          * read using the rdpmc() or equivalent instruction. This can be used
 381          * to sign extend the result like:
 382          *
 383          *   pmc <<= 64 - width;
 384          *   pmc >>= 64 - width; // signed shift right
 385          *   count += pmc;
 386          */
 387         __u16   pmc_width;
 388
 389         /*
 390          * If cap_usr_time the below fields can be used to compute the time
 391          * delta since time_enabled (in ns) using rdtsc or similar.
 392          *
 393          *   u64 quot, rem;
 394          *   u64 delta;
 395          *
 396          *   quot = (cyc >> time_shift);
 397          *   rem = cyc & ((1 << time_shift) - 1);
 398          *   delta = time_offset + quot * time_mult +
 399          *              ((rem * time_mult) >> time_shift);
 400          *
 401          * Where time_offset,time_mult,time_shift and cyc are read in the
 402          * seqcount loop described above. This delta can then be added to
 403          * enabled and possible running (if idx), improving the scaling:
 404          *
 405          *   enabled += delta;
 406          *   if (idx)
 407          *     running += delta;
 408          *
 409          *   quot = count / running;
 410          *   rem  = count % running;
 411          *   count = quot * enabled + (rem * enabled) / running;
 412          */
 413         __u16   time_shift;
 414         __u32   time_mult;
 415         __u64   time_offset;
 416
 417                 /*
 418                  * Hole for extension of the self monitor capabilities
 419                  */
 420
 421         __u64   __reserved[120];        /* align to 1k */
 422
 423         /*
 424          * Control data for the mmap() data buffer.
 425          *
 426          * User-space reading the @data_head value should issue an rmb(), on
 427          * SMP capable platforms, after reading this value -- see
 428          * perf_event_wakeup().
 429          *
 430          * When the mapping is PROT_WRITE the @data_tail value should be
 431          * written by userspace to reflect the last read data. In this case
 432          * the kernel will not over-write unread data.
 433          */
 434         __u64   data_head;              /* head in the data section */
 435         __u64   data_tail;              /* user-space written tail */
 436 };
 437
 438 #define PERF_RECORD_MISC_CPUMODE_MASK           (7 << 0)
 439 #define PERF_RECORD_MISC_CPUMODE_UNKNOWN        (0 << 0)
 440 #define PERF_RECORD_MISC_KERNEL                 (1 << 0)
 441 #define PERF_RECORD_MISC_USER                   (2 << 0)
 442 #define PERF_RECORD_MISC_HYPERVISOR             (3 << 0)
 443 #define PERF_RECORD_MISC_GUEST_KERNEL           (4 << 0)
 444 #define PERF_RECORD_MISC_GUEST_USER             (5 << 0)
 445
 446 /*
 447  * Indicates that the content of PERF_SAMPLE_IP points to
 448  * the actual instruction that triggered the event. See also
 449  * perf_event_attr::precise_ip.
 450  */
 451 #define PERF_RECORD_MISC_EXACT_IP               (1 << 14)
 452 /*
 453  * Reserve the last bit to indicate some extended misc field
 454  */
 455 #define PERF_RECORD_MISC_EXT_RESERVED           (1 << 15)
 456
 457 struct perf_event_header {
 458         __u32   type;
 459         __u16   misc;
 460         __u16   size;
 461 };
 462
 463 enum perf_event_type {
 464
 465         /*
 466          * If perf_event_attr.sample_id_all is set then all event types will
 467          * have the sample_type selected fields related to where/when
 468          * (identity) an event took place (TID, TIME, ID, CPU, STREAM_ID)
 469          * described in PERF_RECORD_SAMPLE below, it will be stashed just after
 470          * the perf_event_header and the fields already present for the existing
 471          * fields, i.e. at the end of the payload. That way a newer perf.data
 472          * file will be supported by older perf tools, with these new optional
 473          * fields being ignored.
 474          *
 475          * The MMAP events record the PROT_EXEC mappings so that we can
 476          * correlate userspace IPs to code. They have the following structure:
 477          *
 478          * struct {
 479          *      struct perf_event_header        header;
 480          *
 481          *      u32                             pid, tid;
 482          *      u64                             addr;
 483          *      u64                             len;
 484          *      u64                             pgoff;
 485          *      char                            filename[];
 486          * };
 487          */
 488         PERF_RECORD_MMAP                        = 1,
 489
 490         /*
 491          * struct {
 492          *      struct perf_event_header        header;
 493          *      u64                             id;
 494          *      u64                             lost;
 495          * };
 496          */
 497         PERF_RECORD_LOST                        = 2,
 498
 499         /*
 500          * struct {
 501          *      struct perf_event_header        header;
 502          *
 503          *      u32                             pid, tid;
 504          *      char                            comm[];
 505          * };
 506          */
 507         PERF_RECORD_COMM                        = 3,
 508
 509         /*
 510          * struct {
 511          *      struct perf_event_header        header;
 512          *      u32                             pid, ppid;
 513          *      u32                             tid, ptid;
 514          *      u64                             time;
 515          * };
 516          */
 517         PERF_RECORD_EXIT                        = 4,
 518
 519         /*
 520          * struct {
 521          *      struct perf_event_header        header;
 522          *      u64                             time;
 523          *      u64                             id;
 524          *      u64                             stream_id;
 525          * };
 526          */
 527         PERF_RECORD_THROTTLE                    = 5,
 528         PERF_RECORD_UNTHROTTLE                  = 6,
 529
 530         /*
 531          * struct {
 532          *      struct perf_event_header        header;
 533          *      u32                             pid, ppid;
 534          *      u32                             tid, ptid;
 535          *      u64                             time;
 536          * };
 537          */
 538         PERF_RECORD_FORK                        = 7,
 539
 540         /*
 541          * struct {
 542          *      struct perf_event_header        header;
 543          *      u32                             pid, tid;
 544          *
 545          *      struct read_format              values;
 546          * };
 547          */
 548         PERF_RECORD_READ                        = 8,
 549
 550         /*
 551          * struct {
 552          *      struct perf_event_header        header;
 553          *
 554          *      { u64                   ip;       } && PERF_SAMPLE_IP
 555          *      { u32                   pid, tid; } && PERF_SAMPLE_TID
 556          *      { u64                   time;     } && PERF_SAMPLE_TIME
 557          *      { u64                   addr;     } && PERF_SAMPLE_ADDR
 558          *      { u64                   id;       } && PERF_SAMPLE_ID
 559          *      { u64                   stream_id;} && PERF_SAMPLE_STREAM_ID
 560          *      { u32                   cpu, res; } && PERF_SAMPLE_CPU
 561          *      { u64                   period;   } && PERF_SAMPLE_PERIOD
 562          *
 563          *      { struct read_format    values;   } && PERF_SAMPLE_READ
 564          *
 565          *      { u64                   nr,
 566          *        u64                   ips[nr];  } && PERF_SAMPLE_CALLCHAIN
 567          *
 568          *      #
 569          *      # The RAW record below is opaque data wrt the ABI
 570          *      #
 571          *      # That is, the ABI doesn't make any promises wrt to
 572          *      # the stability of its content, it may vary depending
 573          *      # on event, hardware, kernel version and phase of
 574          *      # the moon.
 575          *      #
 576          *      # In other words, PERF_SAMPLE_RAW contents are not an ABI.
 577          *      #
 578          *
 579          *      { u32                   size;
 580          *        char                  data[size];}&& PERF_SAMPLE_RAW
 581          *
 582          *      { u64 from, to, flags } lbr[nr];} && PERF_SAMPLE_BRANCH_STACK
 583          *
 584          *      { u64                   abi; # enum perf_sample_regs_abi
 585          *        u64                   regs[weight(mask)]; } && PERF_SAMPLE_REGS_USER
 586          *
 587          *      { u64                   size;
 588          *        char                  data[size];
 589          *        u64                   dyn_size; } && PERF_SAMPLE_STACK_USER
 590          * };
 591          */
 592         PERF_RECORD_SAMPLE                      = 9,
 593
 594         PERF_RECORD_MAX,                        /* non-ABI */
 595 };
 596
 597 #define PERF_MAX_STACK_DEPTH            127
 598
 599 enum perf_callchain_context {
 600         PERF_CONTEXT_HV                 = (__u64)-32,
 601         PERF_CONTEXT_KERNEL             = (__u64)-128,
 602         PERF_CONTEXT_USER               = (__u64)-512,
 603
 604         PERF_CONTEXT_GUEST              = (__u64)-2048,
 605         PERF_CONTEXT_GUEST_KERNEL       = (__u64)-2176,
 606         PERF_CONTEXT_GUEST_USER         = (__u64)-2560,
 607
 608         PERF_CONTEXT_MAX                = (__u64)-4095,
 609 };
 610
 611 #define PERF_FLAG_FD_NO_GROUP           (1U << 0)
 612 #define PERF_FLAG_FD_OUTPUT             (1U << 1)
 613 #define PERF_FLAG_PID_CGROUP            (1U << 2) /* pid=cgroup id, per-cpu mode only */
 614
 615 #endif /* _UAPI_LINUX_PERF_EVENT_H */