arch/x86/kernel/cpu/perf_event_intel.c

   1 /*
   2  * Per core/cpu state
   3  *
   4  * Used to coordinate shared registers between HT threads or
   5  * among events on a single PMU.
   6  */
   7
   8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10 #include <linux/stddef.h>
  11 #include <linux/types.h>
  12 #include <linux/init.h>
  13 #include <linux/slab.h>
  14 #include <linux/export.h>
  15
  16 #include <asm/cpufeature.h>
  17 #include <asm/hardirq.h>
  18 #include <asm/apic.h>
  19
  20 #include "perf_event.h"
  21
  22 /*
  23  * Intel PerfMon, used on Core and later.
  24  */
  25 static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
  26 {
  27         [PERF_COUNT_HW_CPU_CYCLES]              = 0x003c,
  28         [PERF_COUNT_HW_INSTRUCTIONS]            = 0x00c0,
  29         [PERF_COUNT_HW_CACHE_REFERENCES]        = 0x4f2e,
  30         [PERF_COUNT_HW_CACHE_MISSES]            = 0x412e,
  31         [PERF_COUNT_HW_BRANCH_INSTRUCTIONS]     = 0x00c4,
  32         [PERF_COUNT_HW_BRANCH_MISSES]           = 0x00c5,
  33         [PERF_COUNT_HW_BUS_CYCLES]              = 0x013c,
  34         [PERF_COUNT_HW_REF_CPU_CYCLES]          = 0x0300, /* pseudo-encoding */
  35 };
  36
  37 static struct event_constraint intel_core_event_constraints[] __read_mostly =
  38 {
  39         INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
  40         INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
  41         INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
  42         INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
  43         INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
  44         INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
  45         EVENT_CONSTRAINT_END
  46 };
  47
  48 static struct event_constraint intel_core2_event_constraints[] __read_mostly =
  49 {
  50         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
  51         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
  52         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
  53         INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
  54         INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
  55         INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
  56         INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
  57         INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
  58         INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
  59         INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
  60         INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
  61         INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
  62         INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
  63         EVENT_CONSTRAINT_END
  64 };
  65
  66 static struct event_constraint intel_nehalem_event_constraints[] __read_mostly =
  67 {
  68         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
  69         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
  70         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
  71         INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
  72         INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
  73         INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
  74         INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
  75         INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
  76         INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
  77         INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
  78         INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
  79         EVENT_CONSTRAINT_END
  80 };
  81
  82 static struct extra_reg intel_nehalem_extra_regs[] __read_mostly =
  83 {
  84         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
  85         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
  86         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
  87         EVENT_EXTRA_END
  88 };
  89
  90 static struct event_constraint intel_westmere_event_constraints[] __read_mostly =
  91 {
  92         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
  93         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
  94         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
  95         INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
  96         INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
  97         INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
  98         INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
  99         EVENT_CONSTRAINT_END
 100 };
 101
 102 static struct event_constraint intel_snb_event_constraints[] __read_mostly =
 103 {
 104         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 105         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 106         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
 107         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
 108         INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
 109         INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 110         INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
 111         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
 112         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
 113         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
 114         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
 115         INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 116         EVENT_CONSTRAINT_END
 117 };
 118
 119 static struct event_constraint intel_ivb_event_constraints[] __read_mostly =
 120 {
 121         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 122         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 123         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
 124         INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */
 125         INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMTPY */
 126         INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */
 127         INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
 128         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
 129         INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
 130         INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */
 131         INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 132         INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
 133         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
 134         /*
 135          * Errata BV98 -- MEM_*_RETIRED events can leak between counters of SMT
 136          * siblings; disable these events because they can corrupt unrelated
 137          * counters.
 138          */
 139         INTEL_EVENT_CONSTRAINT(0xd0, 0x0), /* MEM_UOPS_RETIRED.* */
 140         INTEL_EVENT_CONSTRAINT(0xd1, 0x0), /* MEM_LOAD_UOPS_RETIRED.* */
 141         INTEL_EVENT_CONSTRAINT(0xd2, 0x0), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
 142         INTEL_EVENT_CONSTRAINT(0xd3, 0x0), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */
 143         EVENT_CONSTRAINT_END
 144 };
 145
 146 static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
 147 {
 148         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 149         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
 150         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0xffff, RSP_1),
 151         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
 152         EVENT_EXTRA_END
 153 };
 154
 155 static struct event_constraint intel_v1_event_constraints[] __read_mostly =
 156 {
 157         EVENT_CONSTRAINT_END
 158 };
 159
 160 static struct event_constraint intel_gen_event_constraints[] __read_mostly =
 161 {
 162         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 163         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 164         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
 165         EVENT_CONSTRAINT_END
 166 };
 167
 168 static struct event_constraint intel_slm_event_constraints[] __read_mostly =
 169 {
 170         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 171         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 172         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
 173         EVENT_CONSTRAINT_END
 174 };
 175
 176 static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
 177         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 178         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
 179         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
 180         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
 181         EVENT_EXTRA_END
 182 };
 183
 184 static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
 185         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 186         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
 187         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
 188         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
 189         EVENT_EXTRA_END
 190 };
 191
 192 EVENT_ATTR_STR(mem-loads,       mem_ld_nhm,     "event=0x0b,umask=0x10,ldlat=3");
 193 EVENT_ATTR_STR(mem-loads,       mem_ld_snb,     "event=0xcd,umask=0x1,ldlat=3");
 194 EVENT_ATTR_STR(mem-stores,      mem_st_snb,     "event=0xcd,umask=0x2");
 195
 196 struct attribute *nhm_events_attrs[] = {
 197         EVENT_PTR(mem_ld_nhm),
 198         NULL,
 199 };
 200
 201 struct attribute *snb_events_attrs[] = {
 202         EVENT_PTR(mem_ld_snb),
 203         EVENT_PTR(mem_st_snb),
 204         NULL,
 205 };
 206
 207 static struct event_constraint intel_hsw_event_constraints[] = {
 208         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 209         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 210         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
 211         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.* */
 212         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
 213         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
 214         /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 215         INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
 216         /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
 217         INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
 218         /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
 219         INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),
 220         EVENT_CONSTRAINT_END
 221 };
 222
 223 struct event_constraint intel_bdw_event_constraints[] = {
 224         FIXED_EVENT_CONSTRAINT(0x00c0, 0),      /* INST_RETIRED.ANY */
 225         FIXED_EVENT_CONSTRAINT(0x003c, 1),      /* CPU_CLK_UNHALTED.CORE */
 226         FIXED_EVENT_CONSTRAINT(0x0300, 2),      /* CPU_CLK_UNHALTED.REF */
 227         INTEL_UEVENT_CONSTRAINT(0x148, 0x4),    /* L1D_PEND_MISS.PENDING */
 228         INTEL_EVENT_CONSTRAINT(0xa3, 0x4),      /* CYCLE_ACTIVITY.* */
 229         EVENT_CONSTRAINT_END
 230 };
 231
 232 static u64 intel_pmu_event_map(int hw_event)
 233 {
 234         return intel_perfmon_event_map[hw_event];
 235 }
 236
 237 #define SNB_DMND_DATA_RD        (1ULL << 0)
 238 #define SNB_DMND_RFO            (1ULL << 1)
 239 #define SNB_DMND_IFETCH         (1ULL << 2)
 240 #define SNB_DMND_WB             (1ULL << 3)
 241 #define SNB_PF_DATA_RD          (1ULL << 4)
 242 #define SNB_PF_RFO              (1ULL << 5)
 243 #define SNB_PF_IFETCH           (1ULL << 6)
 244 #define SNB_LLC_DATA_RD         (1ULL << 7)
 245 #define SNB_LLC_RFO             (1ULL << 8)
 246 #define SNB_LLC_IFETCH          (1ULL << 9)
 247 #define SNB_BUS_LOCKS           (1ULL << 10)
 248 #define SNB_STRM_ST             (1ULL << 11)
 249 #define SNB_OTHER               (1ULL << 15)
 250 #define SNB_RESP_ANY            (1ULL << 16)
 251 #define SNB_NO_SUPP             (1ULL << 17)
 252 #define SNB_LLC_HITM            (1ULL << 18)
 253 #define SNB_LLC_HITE            (1ULL << 19)
 254 #define SNB_LLC_HITS            (1ULL << 20)
 255 #define SNB_LLC_HITF            (1ULL << 21)
 256 #define SNB_LOCAL               (1ULL << 22)
 257 #define SNB_REMOTE              (0xffULL << 23)
 258 #define SNB_SNP_NONE            (1ULL << 31)
 259 #define SNB_SNP_NOT_NEEDED      (1ULL << 32)
 260 #define SNB_SNP_MISS            (1ULL << 33)
 261 #define SNB_NO_FWD              (1ULL << 34)
 262 #define SNB_SNP_FWD             (1ULL << 35)
 263 #define SNB_HITM                (1ULL << 36)
 264 #define SNB_NON_DRAM            (1ULL << 37)
 265
 266 #define SNB_DMND_READ           (SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
 267 #define SNB_DMND_WRITE          (SNB_DMND_RFO|SNB_LLC_RFO)
 268 #define SNB_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
 269
 270 #define SNB_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
 271                                  SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
 272                                  SNB_HITM)
 273
 274 #define SNB_DRAM_ANY            (SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
 275 #define SNB_DRAM_REMOTE         (SNB_REMOTE|SNB_SNP_ANY)
 276
 277 #define SNB_L3_ACCESS           SNB_RESP_ANY
 278 #define SNB_L3_MISS             (SNB_DRAM_ANY|SNB_NON_DRAM)
 279
 280 static __initconst const u64 snb_hw_cache_extra_regs
 281                                 [PERF_COUNT_HW_CACHE_MAX]
 282                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 283                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 284 {
 285  [ C(LL  ) ] = {
 286         [ C(OP_READ) ] = {
 287                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
 288                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_L3_MISS,
 289         },
 290         [ C(OP_WRITE) ] = {
 291                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
 292                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_L3_MISS,
 293         },
 294         [ C(OP_PREFETCH) ] = {
 295                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
 296                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
 297         },
 298  },
 299  [ C(NODE) ] = {
 300         [ C(OP_READ) ] = {
 301                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
 302                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
 303         },
 304         [ C(OP_WRITE) ] = {
 305                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
 306                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
 307         },
 308         [ C(OP_PREFETCH) ] = {
 309                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
 310                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
 311         },
 312  },
 313 };
 314
 315 static __initconst const u64 snb_hw_cache_event_ids
 316                                 [PERF_COUNT_HW_CACHE_MAX]
 317                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 318                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 319 {
 320  [ C(L1D) ] = {
 321         [ C(OP_READ) ] = {
 322                 [ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS        */
 323                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPLACEMENT              */
 324         },
 325         [ C(OP_WRITE) ] = {
 326                 [ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES       */
 327                 [ C(RESULT_MISS)   ] = 0x0851, /* L1D.ALL_M_REPLACEMENT        */
 328         },
 329         [ C(OP_PREFETCH) ] = {
 330                 [ C(RESULT_ACCESS) ] = 0x0,
 331                 [ C(RESULT_MISS)   ] = 0x024e, /* HW_PRE_REQ.DL1_MISS          */
 332         },
 333  },
 334  [ C(L1I ) ] = {
 335         [ C(OP_READ) ] = {
 336                 [ C(RESULT_ACCESS) ] = 0x0,
 337                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACHE.MISSES */
 338         },
 339         [ C(OP_WRITE) ] = {
 340                 [ C(RESULT_ACCESS) ] = -1,
 341                 [ C(RESULT_MISS)   ] = -1,
 342         },
 343         [ C(OP_PREFETCH) ] = {
 344                 [ C(RESULT_ACCESS) ] = 0x0,
 345                 [ C(RESULT_MISS)   ] = 0x0,
 346         },
 347  },
 348  [ C(LL  ) ] = {
 349         [ C(OP_READ) ] = {
 350                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 351                 [ C(RESULT_ACCESS) ] = 0x01b7,
 352                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 353                 [ C(RESULT_MISS)   ] = 0x01b7,
 354         },
 355         [ C(OP_WRITE) ] = {
 356                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 357                 [ C(RESULT_ACCESS) ] = 0x01b7,
 358                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 359                 [ C(RESULT_MISS)   ] = 0x01b7,
 360         },
 361         [ C(OP_PREFETCH) ] = {
 362                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 363                 [ C(RESULT_ACCESS) ] = 0x01b7,
 364                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 365                 [ C(RESULT_MISS)   ] = 0x01b7,
 366         },
 367  },
 368  [ C(DTLB) ] = {
 369         [ C(OP_READ) ] = {
 370                 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
 371                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
 372         },
 373         [ C(OP_WRITE) ] = {
 374                 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
 375                 [ C(RESULT_MISS)   ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
 376         },
 377         [ C(OP_PREFETCH) ] = {
 378                 [ C(RESULT_ACCESS) ] = 0x0,
 379                 [ C(RESULT_MISS)   ] = 0x0,
 380         },
 381  },
 382  [ C(ITLB) ] = {
 383         [ C(OP_READ) ] = {
 384                 [ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT         */
 385                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK    */
 386         },
 387         [ C(OP_WRITE) ] = {
 388                 [ C(RESULT_ACCESS) ] = -1,
 389                 [ C(RESULT_MISS)   ] = -1,
 390         },
 391         [ C(OP_PREFETCH) ] = {
 392                 [ C(RESULT_ACCESS) ] = -1,
 393                 [ C(RESULT_MISS)   ] = -1,
 394         },
 395  },
 396  [ C(BPU ) ] = {
 397         [ C(OP_READ) ] = {
 398                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 399                 [ C(RESULT_MISS)   ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
 400         },
 401         [ C(OP_WRITE) ] = {
 402                 [ C(RESULT_ACCESS) ] = -1,
 403                 [ C(RESULT_MISS)   ] = -1,
 404         },
 405         [ C(OP_PREFETCH) ] = {
 406                 [ C(RESULT_ACCESS) ] = -1,
 407                 [ C(RESULT_MISS)   ] = -1,
 408         },
 409  },
 410  [ C(NODE) ] = {
 411         [ C(OP_READ) ] = {
 412                 [ C(RESULT_ACCESS) ] = 0x01b7,
 413                 [ C(RESULT_MISS)   ] = 0x01b7,
 414         },
 415         [ C(OP_WRITE) ] = {
 416                 [ C(RESULT_ACCESS) ] = 0x01b7,
 417                 [ C(RESULT_MISS)   ] = 0x01b7,
 418         },
 419         [ C(OP_PREFETCH) ] = {
 420                 [ C(RESULT_ACCESS) ] = 0x01b7,
 421                 [ C(RESULT_MISS)   ] = 0x01b7,
 422         },
 423  },
 424
 425 };
 426
 427 /*
 428  * Notes on the events:
 429  * - data reads do not include code reads (comparable to earlier tables)
 430  * - data counts include speculative execution (except L1 write, dtlb, bpu)
 431  * - remote node access includes remote memory, remote cache, remote mmio.
 432  * - prefetches are not included in the counts because they are not
 433  *   reliably counted.
 434  */
 435
 436 #define HSW_DEMAND_DATA_RD              BIT_ULL(0)
 437 #define HSW_DEMAND_RFO                  BIT_ULL(1)
 438 #define HSW_ANY_RESPONSE                BIT_ULL(16)
 439 #define HSW_SUPPLIER_NONE               BIT_ULL(17)
 440 #define HSW_L3_MISS_LOCAL_DRAM          BIT_ULL(22)
 441 #define HSW_L3_MISS_REMOTE_HOP0         BIT_ULL(27)
 442 #define HSW_L3_MISS_REMOTE_HOP1         BIT_ULL(28)
 443 #define HSW_L3_MISS_REMOTE_HOP2P        BIT_ULL(29)
 444 #define HSW_L3_MISS                     (HSW_L3_MISS_LOCAL_DRAM| \
 445                                          HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
 446                                          HSW_L3_MISS_REMOTE_HOP2P)
 447 #define HSW_SNOOP_NONE                  BIT_ULL(31)
 448 #define HSW_SNOOP_NOT_NEEDED            BIT_ULL(32)
 449 #define HSW_SNOOP_MISS                  BIT_ULL(33)
 450 #define HSW_SNOOP_HIT_NO_FWD            BIT_ULL(34)
 451 #define HSW_SNOOP_HIT_WITH_FWD          BIT_ULL(35)
 452 #define HSW_SNOOP_HITM                  BIT_ULL(36)
 453 #define HSW_SNOOP_NON_DRAM              BIT_ULL(37)
 454 #define HSW_ANY_SNOOP                   (HSW_SNOOP_NONE| \
 455                                          HSW_SNOOP_NOT_NEEDED|HSW_SNOOP_MISS| \
 456                                          HSW_SNOOP_HIT_NO_FWD|HSW_SNOOP_HIT_WITH_FWD| \
 457                                          HSW_SNOOP_HITM|HSW_SNOOP_NON_DRAM)
 458 #define HSW_SNOOP_DRAM                  (HSW_ANY_SNOOP & ~HSW_SNOOP_NON_DRAM)
 459 #define HSW_DEMAND_READ                 HSW_DEMAND_DATA_RD
 460 #define HSW_DEMAND_WRITE                HSW_DEMAND_RFO
 461 #define HSW_L3_MISS_REMOTE              (HSW_L3_MISS_REMOTE_HOP0|\
 462                                          HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
 463 #define HSW_LLC_ACCESS                  HSW_ANY_RESPONSE
 464
 465 #define BDW_L3_MISS_LOCAL               BIT(26)
 466 #define BDW_L3_MISS                     (BDW_L3_MISS_LOCAL| \
 467                                          HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
 468                                          HSW_L3_MISS_REMOTE_HOP2P)
 469
 470
 471 static __initconst const u64 hsw_hw_cache_event_ids
 472                                 [PERF_COUNT_HW_CACHE_MAX]
 473                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 474                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 475 {
 476  [ C(L1D ) ] = {
 477         [ C(OP_READ) ] = {
 478                 [ C(RESULT_ACCESS) ] = 0x81d0,  /* MEM_UOPS_RETIRED.ALL_LOADS */
 479                 [ C(RESULT_MISS)   ] = 0x151,   /* L1D.REPLACEMENT */
 480         },
 481         [ C(OP_WRITE) ] = {
 482                 [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_UOPS_RETIRED.ALL_STORES */
 483                 [ C(RESULT_MISS)   ] = 0x0,
 484         },
 485         [ C(OP_PREFETCH) ] = {
 486                 [ C(RESULT_ACCESS) ] = 0x0,
 487                 [ C(RESULT_MISS)   ] = 0x0,
 488         },
 489  },
 490  [ C(L1I ) ] = {
 491         [ C(OP_READ) ] = {
 492                 [ C(RESULT_ACCESS) ] = 0x0,
 493                 [ C(RESULT_MISS)   ] = 0x280,   /* ICACHE.MISSES */
 494         },
 495         [ C(OP_WRITE) ] = {
 496                 [ C(RESULT_ACCESS) ] = -1,
 497                 [ C(RESULT_MISS)   ] = -1,
 498         },
 499         [ C(OP_PREFETCH) ] = {
 500                 [ C(RESULT_ACCESS) ] = 0x0,
 501                 [ C(RESULT_MISS)   ] = 0x0,
 502         },
 503  },
 504  [ C(LL  ) ] = {
 505         [ C(OP_READ) ] = {
 506                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
 507                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
 508         },
 509         [ C(OP_WRITE) ] = {
 510                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
 511                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
 512         },
 513         [ C(OP_PREFETCH) ] = {
 514                 [ C(RESULT_ACCESS) ] = 0x0,
 515                 [ C(RESULT_MISS)   ] = 0x0,
 516         },
 517  },
 518  [ C(DTLB) ] = {
 519         [ C(OP_READ) ] = {
 520                 [ C(RESULT_ACCESS) ] = 0x81d0,  /* MEM_UOPS_RETIRED.ALL_LOADS */
 521                 [ C(RESULT_MISS)   ] = 0x108,   /* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */
 522         },
 523         [ C(OP_WRITE) ] = {
 524                 [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_UOPS_RETIRED.ALL_STORES */
 525                 [ C(RESULT_MISS)   ] = 0x149,   /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
 526         },
 527         [ C(OP_PREFETCH) ] = {
 528                 [ C(RESULT_ACCESS) ] = 0x0,
 529                 [ C(RESULT_MISS)   ] = 0x0,
 530         },
 531  },
 532  [ C(ITLB) ] = {
 533         [ C(OP_READ) ] = {
 534                 [ C(RESULT_ACCESS) ] = 0x6085,  /* ITLB_MISSES.STLB_HIT */
 535                 [ C(RESULT_MISS)   ] = 0x185,   /* ITLB_MISSES.MISS_CAUSES_A_WALK */
 536         },
 537         [ C(OP_WRITE) ] = {
 538                 [ C(RESULT_ACCESS) ] = -1,
 539                 [ C(RESULT_MISS)   ] = -1,
 540         },
 541         [ C(OP_PREFETCH) ] = {
 542                 [ C(RESULT_ACCESS) ] = -1,
 543                 [ C(RESULT_MISS)   ] = -1,
 544         },
 545  },
 546  [ C(BPU ) ] = {
 547         [ C(OP_READ) ] = {
 548                 [ C(RESULT_ACCESS) ] = 0xc4,    /* BR_INST_RETIRED.ALL_BRANCHES */
 549                 [ C(RESULT_MISS)   ] = 0xc5,    /* BR_MISP_RETIRED.ALL_BRANCHES */
 550         },
 551         [ C(OP_WRITE) ] = {
 552                 [ C(RESULT_ACCESS) ] = -1,
 553                 [ C(RESULT_MISS)   ] = -1,
 554         },
 555         [ C(OP_PREFETCH) ] = {
 556                 [ C(RESULT_ACCESS) ] = -1,
 557                 [ C(RESULT_MISS)   ] = -1,
 558         },
 559  },
 560  [ C(NODE) ] = {
 561         [ C(OP_READ) ] = {
 562                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
 563                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
 564         },
 565         [ C(OP_WRITE) ] = {
 566                 [ C(RESULT_ACCESS) ] = 0x1b7,   /* OFFCORE_RESPONSE */
 567                 [ C(RESULT_MISS)   ] = 0x1b7,   /* OFFCORE_RESPONSE */
 568         },
 569         [ C(OP_PREFETCH) ] = {
 570                 [ C(RESULT_ACCESS) ] = 0x0,
 571                 [ C(RESULT_MISS)   ] = 0x0,
 572         },
 573  },
 574 };
 575
 576 static __initconst const u64 hsw_hw_cache_extra_regs
 577                                 [PERF_COUNT_HW_CACHE_MAX]
 578                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 579                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 580 {
 581  [ C(LL  ) ] = {
 582         [ C(OP_READ) ] = {
 583                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
 584                                        HSW_LLC_ACCESS,
 585                 [ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
 586                                        HSW_L3_MISS|HSW_ANY_SNOOP,
 587         },
 588         [ C(OP_WRITE) ] = {
 589                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
 590                                        HSW_LLC_ACCESS,
 591                 [ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
 592                                        HSW_L3_MISS|HSW_ANY_SNOOP,
 593         },
 594         [ C(OP_PREFETCH) ] = {
 595                 [ C(RESULT_ACCESS) ] = 0x0,
 596                 [ C(RESULT_MISS)   ] = 0x0,
 597         },
 598  },
 599  [ C(NODE) ] = {
 600         [ C(OP_READ) ] = {
 601                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
 602                                        HSW_L3_MISS_LOCAL_DRAM|
 603                                        HSW_SNOOP_DRAM,
 604                 [ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
 605                                        HSW_L3_MISS_REMOTE|
 606                                        HSW_SNOOP_DRAM,
 607         },
 608         [ C(OP_WRITE) ] = {
 609                 [ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
 610                                        HSW_L3_MISS_LOCAL_DRAM|
 611                                        HSW_SNOOP_DRAM,
 612                 [ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
 613                                        HSW_L3_MISS_REMOTE|
 614                                        HSW_SNOOP_DRAM,
 615         },
 616         [ C(OP_PREFETCH) ] = {
 617                 [ C(RESULT_ACCESS) ] = 0x0,
 618                 [ C(RESULT_MISS)   ] = 0x0,
 619         },
 620  },
 621 };
 622
 623 static __initconst const u64 westmere_hw_cache_event_ids
 624                                 [PERF_COUNT_HW_CACHE_MAX]
 625                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 626                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 627 {
 628  [ C(L1D) ] = {
 629         [ C(OP_READ) ] = {
 630                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 631                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
 632         },
 633         [ C(OP_WRITE) ] = {
 634                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 635                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
 636         },
 637         [ C(OP_PREFETCH) ] = {
 638                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
 639                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
 640         },
 641  },
 642  [ C(L1I ) ] = {
 643         [ C(OP_READ) ] = {
 644                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
 645                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
 646         },
 647         [ C(OP_WRITE) ] = {
 648                 [ C(RESULT_ACCESS) ] = -1,
 649                 [ C(RESULT_MISS)   ] = -1,
 650         },
 651         [ C(OP_PREFETCH) ] = {
 652                 [ C(RESULT_ACCESS) ] = 0x0,
 653                 [ C(RESULT_MISS)   ] = 0x0,
 654         },
 655  },
 656  [ C(LL  ) ] = {
 657         [ C(OP_READ) ] = {
 658                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 659                 [ C(RESULT_ACCESS) ] = 0x01b7,
 660                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 661                 [ C(RESULT_MISS)   ] = 0x01b7,
 662         },
 663         /*
 664          * Use RFO, not WRITEBACK, because a write miss would typically occur
 665          * on RFO.
 666          */
 667         [ C(OP_WRITE) ] = {
 668                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 669                 [ C(RESULT_ACCESS) ] = 0x01b7,
 670                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 671                 [ C(RESULT_MISS)   ] = 0x01b7,
 672         },
 673         [ C(OP_PREFETCH) ] = {
 674                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 675                 [ C(RESULT_ACCESS) ] = 0x01b7,
 676                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 677                 [ C(RESULT_MISS)   ] = 0x01b7,
 678         },
 679  },
 680  [ C(DTLB) ] = {
 681         [ C(OP_READ) ] = {
 682                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 683                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
 684         },
 685         [ C(OP_WRITE) ] = {
 686                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 687                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
 688         },
 689         [ C(OP_PREFETCH) ] = {
 690                 [ C(RESULT_ACCESS) ] = 0x0,
 691                 [ C(RESULT_MISS)   ] = 0x0,
 692         },
 693  },
 694  [ C(ITLB) ] = {
 695         [ C(OP_READ) ] = {
 696                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
 697                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.ANY              */
 698         },
 699         [ C(OP_WRITE) ] = {
 700                 [ C(RESULT_ACCESS) ] = -1,
 701                 [ C(RESULT_MISS)   ] = -1,
 702         },
 703         [ C(OP_PREFETCH) ] = {
 704                 [ C(RESULT_ACCESS) ] = -1,
 705                 [ C(RESULT_MISS)   ] = -1,
 706         },
 707  },
 708  [ C(BPU ) ] = {
 709         [ C(OP_READ) ] = {
 710                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 711                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
 712         },
 713         [ C(OP_WRITE) ] = {
 714                 [ C(RESULT_ACCESS) ] = -1,
 715                 [ C(RESULT_MISS)   ] = -1,
 716         },
 717         [ C(OP_PREFETCH) ] = {
 718                 [ C(RESULT_ACCESS) ] = -1,
 719                 [ C(RESULT_MISS)   ] = -1,
 720         },
 721  },
 722  [ C(NODE) ] = {
 723         [ C(OP_READ) ] = {
 724                 [ C(RESULT_ACCESS) ] = 0x01b7,
 725                 [ C(RESULT_MISS)   ] = 0x01b7,
 726         },
 727         [ C(OP_WRITE) ] = {
 728                 [ C(RESULT_ACCESS) ] = 0x01b7,
 729                 [ C(RESULT_MISS)   ] = 0x01b7,
 730         },
 731         [ C(OP_PREFETCH) ] = {
 732                 [ C(RESULT_ACCESS) ] = 0x01b7,
 733                 [ C(RESULT_MISS)   ] = 0x01b7,
 734         },
 735  },
 736 };
 737
 738 /*
 739  * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
 740  * See IA32 SDM Vol 3B 30.6.1.3
 741  */
 742
 743 #define NHM_DMND_DATA_RD        (1 << 0)
 744 #define NHM_DMND_RFO            (1 << 1)
 745 #define NHM_DMND_IFETCH         (1 << 2)
 746 #define NHM_DMND_WB             (1 << 3)
 747 #define NHM_PF_DATA_RD          (1 << 4)
 748 #define NHM_PF_DATA_RFO         (1 << 5)
 749 #define NHM_PF_IFETCH           (1 << 6)
 750 #define NHM_OFFCORE_OTHER       (1 << 7)
 751 #define NHM_UNCORE_HIT          (1 << 8)
 752 #define NHM_OTHER_CORE_HIT_SNP  (1 << 9)
 753 #define NHM_OTHER_CORE_HITM     (1 << 10)
 754                                 /* reserved */
 755 #define NHM_REMOTE_CACHE_FWD    (1 << 12)
 756 #define NHM_REMOTE_DRAM         (1 << 13)
 757 #define NHM_LOCAL_DRAM          (1 << 14)
 758 #define NHM_NON_DRAM            (1 << 15)
 759
 760 #define NHM_LOCAL               (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
 761 #define NHM_REMOTE              (NHM_REMOTE_DRAM)
 762
 763 #define NHM_DMND_READ           (NHM_DMND_DATA_RD)
 764 #define NHM_DMND_WRITE          (NHM_DMND_RFO|NHM_DMND_WB)
 765 #define NHM_DMND_PREFETCH       (NHM_PF_DATA_RD|NHM_PF_DATA_RFO)
 766
 767 #define NHM_L3_HIT      (NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
 768 #define NHM_L3_MISS     (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
 769 #define NHM_L3_ACCESS   (NHM_L3_HIT|NHM_L3_MISS)
 770
 771 static __initconst const u64 nehalem_hw_cache_extra_regs
 772                                 [PERF_COUNT_HW_CACHE_MAX]
 773                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 774                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 775 {
 776  [ C(LL  ) ] = {
 777         [ C(OP_READ) ] = {
 778                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
 779                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_L3_MISS,
 780         },
 781         [ C(OP_WRITE) ] = {
 782                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
 783                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_L3_MISS,
 784         },
 785         [ C(OP_PREFETCH) ] = {
 786                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
 787                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
 788         },
 789  },
 790  [ C(NODE) ] = {
 791         [ C(OP_READ) ] = {
 792                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
 793                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_REMOTE,
 794         },
 795         [ C(OP_WRITE) ] = {
 796                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
 797                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_REMOTE,
 798         },
 799         [ C(OP_PREFETCH) ] = {
 800                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
 801                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_REMOTE,
 802         },
 803  },
 804 };
 805
 806 static __initconst const u64 nehalem_hw_cache_event_ids
 807                                 [PERF_COUNT_HW_CACHE_MAX]
 808                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 809                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 810 {
 811  [ C(L1D) ] = {
 812         [ C(OP_READ) ] = {
 813                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 814                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
 815         },
 816         [ C(OP_WRITE) ] = {
 817                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 818                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
 819         },
 820         [ C(OP_PREFETCH) ] = {
 821                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
 822                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
 823         },
 824  },
 825  [ C(L1I ) ] = {
 826         [ C(OP_READ) ] = {
 827                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
 828                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
 829         },
 830         [ C(OP_WRITE) ] = {
 831                 [ C(RESULT_ACCESS) ] = -1,
 832                 [ C(RESULT_MISS)   ] = -1,
 833         },
 834         [ C(OP_PREFETCH) ] = {
 835                 [ C(RESULT_ACCESS) ] = 0x0,
 836                 [ C(RESULT_MISS)   ] = 0x0,
 837         },
 838  },
 839  [ C(LL  ) ] = {
 840         [ C(OP_READ) ] = {
 841                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 842                 [ C(RESULT_ACCESS) ] = 0x01b7,
 843                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 844                 [ C(RESULT_MISS)   ] = 0x01b7,
 845         },
 846         /*
 847          * Use RFO, not WRITEBACK, because a write miss would typically occur
 848          * on RFO.
 849          */
 850         [ C(OP_WRITE) ] = {
 851                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 852                 [ C(RESULT_ACCESS) ] = 0x01b7,
 853                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 854                 [ C(RESULT_MISS)   ] = 0x01b7,
 855         },
 856         [ C(OP_PREFETCH) ] = {
 857                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 858                 [ C(RESULT_ACCESS) ] = 0x01b7,
 859                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 860                 [ C(RESULT_MISS)   ] = 0x01b7,
 861         },
 862  },
 863  [ C(DTLB) ] = {
 864         [ C(OP_READ) ] = {
 865                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI   (alias)  */
 866                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
 867         },
 868         [ C(OP_WRITE) ] = {
 869                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI   (alias)  */
 870                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
 871         },
 872         [ C(OP_PREFETCH) ] = {
 873                 [ C(RESULT_ACCESS) ] = 0x0,
 874                 [ C(RESULT_MISS)   ] = 0x0,
 875         },
 876  },
 877  [ C(ITLB) ] = {
 878         [ C(OP_READ) ] = {
 879                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
 880                 [ C(RESULT_MISS)   ] = 0x20c8, /* ITLB_MISS_RETIRED            */
 881         },
 882         [ C(OP_WRITE) ] = {
 883                 [ C(RESULT_ACCESS) ] = -1,
 884                 [ C(RESULT_MISS)   ] = -1,
 885         },
 886         [ C(OP_PREFETCH) ] = {
 887                 [ C(RESULT_ACCESS) ] = -1,
 888                 [ C(RESULT_MISS)   ] = -1,
 889         },
 890  },
 891  [ C(BPU ) ] = {
 892         [ C(OP_READ) ] = {
 893                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 894                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
 895         },
 896         [ C(OP_WRITE) ] = {
 897                 [ C(RESULT_ACCESS) ] = -1,
 898                 [ C(RESULT_MISS)   ] = -1,
 899         },
 900         [ C(OP_PREFETCH) ] = {
 901                 [ C(RESULT_ACCESS) ] = -1,
 902                 [ C(RESULT_MISS)   ] = -1,
 903         },
 904  },
 905  [ C(NODE) ] = {
 906         [ C(OP_READ) ] = {
 907                 [ C(RESULT_ACCESS) ] = 0x01b7,
 908                 [ C(RESULT_MISS)   ] = 0x01b7,
 909         },
 910         [ C(OP_WRITE) ] = {
 911                 [ C(RESULT_ACCESS) ] = 0x01b7,
 912                 [ C(RESULT_MISS)   ] = 0x01b7,
 913         },
 914         [ C(OP_PREFETCH) ] = {
 915                 [ C(RESULT_ACCESS) ] = 0x01b7,
 916                 [ C(RESULT_MISS)   ] = 0x01b7,
 917         },
 918  },
 919 };
 920
 921 static __initconst const u64 core2_hw_cache_event_ids
 922                                 [PERF_COUNT_HW_CACHE_MAX]
 923                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 924                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 925 {
 926  [ C(L1D) ] = {
 927         [ C(OP_READ) ] = {
 928                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI          */
 929                 [ C(RESULT_MISS)   ] = 0x0140, /* L1D_CACHE_LD.I_STATE       */
 930         },
 931         [ C(OP_WRITE) ] = {
 932                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI          */
 933                 [ C(RESULT_MISS)   ] = 0x0141, /* L1D_CACHE_ST.I_STATE       */
 934         },
 935         [ C(OP_PREFETCH) ] = {
 936                 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS      */
 937                 [ C(RESULT_MISS)   ] = 0,
 938         },
 939  },
 940  [ C(L1I ) ] = {
 941         [ C(OP_READ) ] = {
 942                 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS                  */
 943                 [ C(RESULT_MISS)   ] = 0x0081, /* L1I.MISSES                 */
 944         },
 945         [ C(OP_WRITE) ] = {
 946                 [ C(RESULT_ACCESS) ] = -1,
 947                 [ C(RESULT_MISS)   ] = -1,
 948         },
 949         [ C(OP_PREFETCH) ] = {
 950                 [ C(RESULT_ACCESS) ] = 0,
 951                 [ C(RESULT_MISS)   ] = 0,
 952         },
 953  },
 954  [ C(LL  ) ] = {
 955         [ C(OP_READ) ] = {
 956                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
 957                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
 958         },
 959         [ C(OP_WRITE) ] = {
 960                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
 961                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
 962         },
 963         [ C(OP_PREFETCH) ] = {
 964                 [ C(RESULT_ACCESS) ] = 0,
 965                 [ C(RESULT_MISS)   ] = 0,
 966         },
 967  },
 968  [ C(DTLB) ] = {
 969         [ C(OP_READ) ] = {
 970                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI  (alias) */
 971                 [ C(RESULT_MISS)   ] = 0x0208, /* DTLB_MISSES.MISS_LD        */
 972         },
 973         [ C(OP_WRITE) ] = {
 974                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI  (alias) */
 975                 [ C(RESULT_MISS)   ] = 0x0808, /* DTLB_MISSES.MISS_ST        */
 976         },
 977         [ C(OP_PREFETCH) ] = {
 978                 [ C(RESULT_ACCESS) ] = 0,
 979                 [ C(RESULT_MISS)   ] = 0,
 980         },
 981  },
 982  [ C(ITLB) ] = {
 983         [ C(OP_READ) ] = {
 984                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
 985                 [ C(RESULT_MISS)   ] = 0x1282, /* ITLBMISSES                 */
 986         },
 987         [ C(OP_WRITE) ] = {
 988                 [ C(RESULT_ACCESS) ] = -1,
 989                 [ C(RESULT_MISS)   ] = -1,
 990         },
 991         [ C(OP_PREFETCH) ] = {
 992                 [ C(RESULT_ACCESS) ] = -1,
 993                 [ C(RESULT_MISS)   ] = -1,
 994         },
 995  },
 996  [ C(BPU ) ] = {
 997         [ C(OP_READ) ] = {
 998                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
 999                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
1000         },
1001         [ C(OP_WRITE) ] = {
1002                 [ C(RESULT_ACCESS) ] = -1,
1003                 [ C(RESULT_MISS)   ] = -1,
1004         },
1005         [ C(OP_PREFETCH) ] = {
1006                 [ C(RESULT_ACCESS) ] = -1,
1007                 [ C(RESULT_MISS)   ] = -1,
1008         },
1009  },
1010 };
1011
1012 static __initconst const u64 atom_hw_cache_event_ids
1013                                 [PERF_COUNT_HW_CACHE_MAX]
1014                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1015                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1016 {
1017  [ C(L1D) ] = {
1018         [ C(OP_READ) ] = {
1019                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD               */
1020                 [ C(RESULT_MISS)   ] = 0,
1021         },
1022         [ C(OP_WRITE) ] = {
1023                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST               */
1024                 [ C(RESULT_MISS)   ] = 0,
1025         },
1026         [ C(OP_PREFETCH) ] = {
1027                 [ C(RESULT_ACCESS) ] = 0x0,
1028                 [ C(RESULT_MISS)   ] = 0,
1029         },
1030  },
1031  [ C(L1I ) ] = {
1032         [ C(OP_READ) ] = {
1033                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                  */
1034                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                 */
1035         },
1036         [ C(OP_WRITE) ] = {
1037                 [ C(RESULT_ACCESS) ] = -1,
1038                 [ C(RESULT_MISS)   ] = -1,
1039         },
1040         [ C(OP_PREFETCH) ] = {
1041                 [ C(RESULT_ACCESS) ] = 0,
1042                 [ C(RESULT_MISS)   ] = 0,
1043         },
1044  },
1045  [ C(LL  ) ] = {
1046         [ C(OP_READ) ] = {
1047                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
1048                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
1049         },
1050         [ C(OP_WRITE) ] = {
1051                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
1052                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
1053         },
1054         [ C(OP_PREFETCH) ] = {
1055                 [ C(RESULT_ACCESS) ] = 0,
1056                 [ C(RESULT_MISS)   ] = 0,
1057         },
1058  },
1059  [ C(DTLB) ] = {
1060         [ C(OP_READ) ] = {
1061                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI  (alias) */
1062                 [ C(RESULT_MISS)   ] = 0x0508, /* DTLB_MISSES.MISS_LD        */
1063         },
1064         [ C(OP_WRITE) ] = {
1065                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI  (alias) */
1066                 [ C(RESULT_MISS)   ] = 0x0608, /* DTLB_MISSES.MISS_ST        */
1067         },
1068         [ C(OP_PREFETCH) ] = {
1069                 [ C(RESULT_ACCESS) ] = 0,
1070                 [ C(RESULT_MISS)   ] = 0,
1071         },
1072  },
1073  [ C(ITLB) ] = {
1074         [ C(OP_READ) ] = {
1075                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
1076                 [ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES                */
1077         },
1078         [ C(OP_WRITE) ] = {
1079                 [ C(RESULT_ACCESS) ] = -1,
1080                 [ C(RESULT_MISS)   ] = -1,
1081         },
1082         [ C(OP_PREFETCH) ] = {
1083                 [ C(RESULT_ACCESS) ] = -1,
1084                 [ C(RESULT_MISS)   ] = -1,
1085         },
1086  },
1087  [ C(BPU ) ] = {
1088         [ C(OP_READ) ] = {
1089                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
1090                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
1091         },
1092         [ C(OP_WRITE) ] = {
1093                 [ C(RESULT_ACCESS) ] = -1,
1094                 [ C(RESULT_MISS)   ] = -1,
1095         },
1096         [ C(OP_PREFETCH) ] = {
1097                 [ C(RESULT_ACCESS) ] = -1,
1098                 [ C(RESULT_MISS)   ] = -1,
1099         },
1100  },
1101 };
1102
1103 static struct extra_reg intel_slm_extra_regs[] __read_mostly =
1104 {
1105         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
1106         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
1107         INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x768005ffffull, RSP_1),
1108         EVENT_EXTRA_END
1109 };
1110
1111 #define SLM_DMND_READ           SNB_DMND_DATA_RD
1112 #define SLM_DMND_WRITE          SNB_DMND_RFO
1113 #define SLM_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
1114
1115 #define SLM_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
1116 #define SLM_LLC_ACCESS          SNB_RESP_ANY
1117 #define SLM_LLC_MISS            (SLM_SNP_ANY|SNB_NON_DRAM)
1118
1119 static __initconst const u64 slm_hw_cache_extra_regs
1120                                 [PERF_COUNT_HW_CACHE_MAX]
1121                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1122                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1123 {
1124  [ C(LL  ) ] = {
1125         [ C(OP_READ) ] = {
1126                 [ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
1127                 [ C(RESULT_MISS)   ] = SLM_DMND_READ|SLM_LLC_MISS,
1128         },
1129         [ C(OP_WRITE) ] = {
1130                 [ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
1131                 [ C(RESULT_MISS)   ] = SLM_DMND_WRITE|SLM_LLC_MISS,
1132         },
1133         [ C(OP_PREFETCH) ] = {
1134                 [ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
1135                 [ C(RESULT_MISS)   ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
1136         },
1137  },
1138 };
1139
1140 static __initconst const u64 slm_hw_cache_event_ids
1141                                 [PERF_COUNT_HW_CACHE_MAX]
1142                                 [PERF_COUNT_HW_CACHE_OP_MAX]
1143                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
1144 {
1145  [ C(L1D) ] = {
1146         [ C(OP_READ) ] = {
1147                 [ C(RESULT_ACCESS) ] = 0,
1148                 [ C(RESULT_MISS)   ] = 0x0104, /* LD_DCU_MISS */
1149         },
1150         [ C(OP_WRITE) ] = {
1151                 [ C(RESULT_ACCESS) ] = 0,
1152                 [ C(RESULT_MISS)   ] = 0,
1153         },
1154         [ C(OP_PREFETCH) ] = {
1155                 [ C(RESULT_ACCESS) ] = 0,
1156                 [ C(RESULT_MISS)   ] = 0,
1157         },
1158  },
1159  [ C(L1I ) ] = {
1160         [ C(OP_READ) ] = {
1161                 [ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
1162                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACGE.MISSES */
1163         },
1164         [ C(OP_WRITE) ] = {
1165                 [ C(RESULT_ACCESS) ] = -1,
1166                 [ C(RESULT_MISS)   ] = -1,
1167         },
1168         [ C(OP_PREFETCH) ] = {
1169                 [ C(RESULT_ACCESS) ] = 0,
1170                 [ C(RESULT_MISS)   ] = 0,
1171         },
1172  },
1173  [ C(LL  ) ] = {
1174         [ C(OP_READ) ] = {
1175                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
1176                 [ C(RESULT_ACCESS) ] = 0x01b7,
1177                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
1178                 [ C(RESULT_MISS)   ] = 0x01b7,
1179         },
1180         [ C(OP_WRITE) ] = {
1181                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
1182                 [ C(RESULT_ACCESS) ] = 0x01b7,
1183                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
1184                 [ C(RESULT_MISS)   ] = 0x01b7,
1185         },
1186         [ C(OP_PREFETCH) ] = {
1187                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
1188                 [ C(RESULT_ACCESS) ] = 0x01b7,
1189                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
1190                 [ C(RESULT_MISS)   ] = 0x01b7,
1191         },
1192  },
1193  [ C(DTLB) ] = {
1194         [ C(OP_READ) ] = {
1195                 [ C(RESULT_ACCESS) ] = 0,
1196                 [ C(RESULT_MISS)   ] = 0x0804, /* LD_DTLB_MISS */
1197         },
1198         [ C(OP_WRITE) ] = {
1199                 [ C(RESULT_ACCESS) ] = 0,
1200                 [ C(RESULT_MISS)   ] = 0,
1201         },
1202         [ C(OP_PREFETCH) ] = {
1203                 [ C(RESULT_ACCESS) ] = 0,
1204                 [ C(RESULT_MISS)   ] = 0,
1205         },
1206  },
1207  [ C(ITLB) ] = {
1208         [ C(OP_READ) ] = {
1209                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1210                 [ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES */
1211         },
1212         [ C(OP_WRITE) ] = {
1213                 [ C(RESULT_ACCESS) ] = -1,
1214                 [ C(RESULT_MISS)   ] = -1,
1215         },
1216         [ C(OP_PREFETCH) ] = {
1217                 [ C(RESULT_ACCESS) ] = -1,
1218                 [ C(RESULT_MISS)   ] = -1,
1219         },
1220  },
1221  [ C(BPU ) ] = {
1222         [ C(OP_READ) ] = {
1223                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1224                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1225         },
1226         [ C(OP_WRITE) ] = {
1227                 [ C(RESULT_ACCESS) ] = -1,
1228                 [ C(RESULT_MISS)   ] = -1,
1229         },
1230         [ C(OP_PREFETCH) ] = {
1231                 [ C(RESULT_ACCESS) ] = -1,
1232                 [ C(RESULT_MISS)   ] = -1,
1233         },
1234  },
1235 };
1236
1237 static void intel_pmu_disable_all(void)
1238 {
1239         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1240
1241         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1242
1243         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
1244                 intel_pmu_disable_bts();
1245         else
1246                 intel_bts_disable_local();
1247
1248         intel_pmu_pebs_disable_all();
1249         intel_pmu_lbr_disable_all();
1250 }
1251
1252 static void intel_pmu_enable_all(int added)
1253 {
1254         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1255
1256         intel_pmu_pebs_enable_all();
1257         intel_pmu_lbr_enable_all();
1258         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
1259                         x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
1260
1261         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
1262                 struct perf_event *event =
1263                         cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
1264
1265                 if (WARN_ON_ONCE(!event))
1266                         return;
1267
1268                 intel_pmu_enable_bts(event->hw.config);
1269         } else
1270                 intel_bts_enable_local();
1271 }
1272
1273 /*
1274  * Workaround for:
1275  *   Intel Errata AAK100 (model 26)
1276  *   Intel Errata AAP53  (model 30)
1277  *   Intel Errata BD53   (model 44)
1278  *
1279  * The official story:
1280  *   These chips need to be 'reset' when adding counters by programming the
1281  *   magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
1282  *   in sequence on the same PMC or on different PMCs.
1283  *
1284  * In practise it appears some of these events do in fact count, and
1285  * we need to programm all 4 events.
1286  */
1287 static void intel_pmu_nhm_workaround(void)
1288 {
1289         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1290         static const unsigned long nhm_magic[4] = {
1291                 0x4300B5,
1292                 0x4300D2,
1293                 0x4300B1,
1294                 0x4300B1
1295         };
1296         struct perf_event *event;
1297         int i;
1298
1299         /*
1300          * The Errata requires below steps:
1301          * 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
1302          * 2) Configure 4 PERFEVTSELx with the magic events and clear
1303          *    the corresponding PMCx;
1304          * 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
1305          * 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
1306          * 5) Clear 4 pairs of ERFEVTSELx and PMCx;
1307          */
1308
1309         /*
1310          * The real steps we choose are a little different from above.
1311          * A) To reduce MSR operations, we don't run step 1) as they
1312          *    are already cleared before this function is called;
1313          * B) Call x86_perf_event_update to save PMCx before configuring
1314          *    PERFEVTSELx with magic number;
1315          * C) With step 5), we do clear only when the PERFEVTSELx is
1316          *    not used currently.
1317          * D) Call x86_perf_event_set_period to restore PMCx;
1318          */
1319
1320         /* We always operate 4 pairs of PERF Counters */
1321         for (i = 0; i < 4; i++) {
1322                 event = cpuc->events[i];
1323                 if (event)
1324                         x86_perf_event_update(event);
1325         }
1326
1327         for (i = 0; i < 4; i++) {
1328                 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
1329                 wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
1330         }
1331
1332         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
1333         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
1334
1335         for (i = 0; i < 4; i++) {
1336                 event = cpuc->events[i];
1337
1338                 if (event) {
1339                         x86_perf_event_set_period(event);
1340                         __x86_pmu_enable_event(&event->hw,
1341                                         ARCH_PERFMON_EVENTSEL_ENABLE);
1342                 } else
1343                         wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
1344         }
1345 }
1346
1347 static void intel_pmu_nhm_enable_all(int added)
1348 {
1349         if (added)
1350                 intel_pmu_nhm_workaround();
1351         intel_pmu_enable_all(added);
1352 }
1353
1354 static inline u64 intel_pmu_get_status(void)
1355 {
1356         u64 status;
1357
1358         rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
1359
1360         return status;
1361 }
1362
1363 static inline void intel_pmu_ack_status(u64 ack)
1364 {
1365         wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
1366 }
1367
1368 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
1369 {
1370         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1371         u64 ctrl_val, mask;
1372
1373         mask = 0xfULL << (idx * 4);
1374
1375         rdmsrl(hwc->config_base, ctrl_val);
1376         ctrl_val &= ~mask;
1377         wrmsrl(hwc->config_base, ctrl_val);
1378 }
1379
1380 static inline bool event_is_checkpointed(struct perf_event *event)
1381 {
1382         return (event->hw.config & HSW_IN_TX_CHECKPOINTED) != 0;
1383 }
1384
1385 static void intel_pmu_disable_event(struct perf_event *event)
1386 {
1387         struct hw_perf_event *hwc = &event->hw;
1388         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1389
1390         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1391                 intel_pmu_disable_bts();
1392                 intel_pmu_drain_bts_buffer();
1393                 return;
1394         }
1395
1396         cpuc->intel_ctrl_guest_mask &= ~(1ull << hwc->idx);
1397         cpuc->intel_ctrl_host_mask &= ~(1ull << hwc->idx);
1398         cpuc->intel_cp_status &= ~(1ull << hwc->idx);
1399
1400         /*
1401          * must disable before any actual event
1402          * because any event may be combined with LBR
1403          */
1404         if (needs_branch_stack(event))
1405                 intel_pmu_lbr_disable(event);
1406
1407         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1408                 intel_pmu_disable_fixed(hwc);
1409                 return;
1410         }
1411
1412         x86_pmu_disable_event(event);
1413
1414         if (unlikely(event->attr.precise_ip))
1415                 intel_pmu_pebs_disable(event);
1416 }
1417
1418 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
1419 {
1420         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1421         u64 ctrl_val, bits, mask;
1422
1423         /*
1424          * Enable IRQ generation (0x8),
1425          * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
1426          * if requested:
1427          */
1428         bits = 0x8ULL;
1429         if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
1430                 bits |= 0x2;
1431         if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
1432                 bits |= 0x1;
1433
1434         /*
1435          * ANY bit is supported in v3 and up
1436          */
1437         if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
1438                 bits |= 0x4;
1439
1440         bits <<= (idx * 4);
1441         mask = 0xfULL << (idx * 4);
1442
1443         rdmsrl(hwc->config_base, ctrl_val);
1444         ctrl_val &= ~mask;
1445         ctrl_val |= bits;
1446         wrmsrl(hwc->config_base, ctrl_val);
1447 }
1448
1449 static void intel_pmu_enable_event(struct perf_event *event)
1450 {
1451         struct hw_perf_event *hwc = &event->hw;
1452         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1453
1454         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1455                 if (!__this_cpu_read(cpu_hw_events.enabled))
1456                         return;
1457
1458                 intel_pmu_enable_bts(hwc->config);
1459                 return;
1460         }
1461         /*
1462          * must enabled before any actual event
1463          * because any event may be combined with LBR
1464          */
1465         if (needs_branch_stack(event))
1466                 intel_pmu_lbr_enable(event);
1467
1468         if (event->attr.exclude_host)
1469                 cpuc->intel_ctrl_guest_mask |= (1ull << hwc->idx);
1470         if (event->attr.exclude_guest)
1471                 cpuc->intel_ctrl_host_mask |= (1ull << hwc->idx);
1472
1473         if (unlikely(event_is_checkpointed(event)))
1474                 cpuc->intel_cp_status |= (1ull << hwc->idx);
1475
1476         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1477                 intel_pmu_enable_fixed(hwc);
1478                 return;
1479         }
1480
1481         if (unlikely(event->attr.precise_ip))
1482                 intel_pmu_pebs_enable(event);
1483
1484         __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1485 }
1486
1487 /*
1488  * Save and restart an expired event. Called by NMI contexts,
1489  * so it has to be careful about preempting normal event ops:
1490  */
1491 int intel_pmu_save_and_restart(struct perf_event *event)
1492 {
1493         x86_perf_event_update(event);
1494         /*
1495          * For a checkpointed counter always reset back to 0.  This
1496          * avoids a situation where the counter overflows, aborts the
1497          * transaction and is then set back to shortly before the
1498          * overflow, and overflows and aborts again.
1499          */
1500         if (unlikely(event_is_checkpointed(event))) {
1501                 /* No race with NMIs because the counter should not be armed */
1502                 wrmsrl(event->hw.event_base, 0);
1503                 local64_set(&event->hw.prev_count, 0);
1504         }
1505         return x86_perf_event_set_period(event);
1506 }
1507
1508 static void intel_pmu_reset(void)
1509 {
1510         struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
1511         unsigned long flags;
1512         int idx;
1513
1514         if (!x86_pmu.num_counters)
1515                 return;
1516
1517         local_irq_save(flags);
1518
1519         pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
1520
1521         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1522                 wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
1523                 wrmsrl_safe(x86_pmu_event_addr(idx),  0ull);
1524         }
1525         for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
1526                 wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
1527
1528         if (ds)
1529                 ds->bts_index = ds->bts_buffer_base;
1530
1531         local_irq_restore(flags);
1532 }
1533
1534 /*
1535  * This handler is triggered by the local APIC, so the APIC IRQ handling
1536  * rules apply:
1537  */
1538 static int intel_pmu_handle_irq(struct pt_regs *regs)
1539 {
1540         struct perf_sample_data data;
1541         struct cpu_hw_events *cpuc;
1542         int bit, loops;
1543         u64 status;
1544         int handled;
1545
1546         cpuc = this_cpu_ptr(&cpu_hw_events);
1547
1548         /*
1549          * No known reason to not always do late ACK,
1550          * but just in case do it opt-in.
1551          */
1552         if (!x86_pmu.late_ack)
1553                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1554         intel_pmu_disable_all();
1555         handled = intel_pmu_drain_bts_buffer();
1556         handled += intel_bts_interrupt();
1557         status = intel_pmu_get_status();
1558         if (!status)
1559                 goto done;
1560
1561         loops = 0;
1562 again:
1563         intel_pmu_ack_status(status);
1564         if (++loops > 100) {
1565                 static bool warned = false;
1566                 if (!warned) {
1567                         WARN(1, "perfevents: irq loop stuck!\n");
1568                         perf_event_print_debug();
1569                         warned = true;
1570                 }
1571                 intel_pmu_reset();
1572                 goto done;
1573         }
1574
1575         inc_irq_stat(apic_perf_irqs);
1576
1577         intel_pmu_lbr_read();
1578
1579         /*
1580          * CondChgd bit 63 doesn't mean any overflow status. Ignore
1581          * and clear the bit.
1582          */
1583         if (__test_and_clear_bit(63, (unsigned long *)&status)) {
1584                 if (!status)
1585                         goto done;
1586         }
1587
1588         /*
1589          * PEBS overflow sets bit 62 in the global status register
1590          */
1591         if (__test_and_clear_bit(62, (unsigned long *)&status)) {
1592                 handled++;
1593                 x86_pmu.drain_pebs(regs);
1594         }
1595
1596         /*
1597          * Intel PT
1598          */
1599         if (__test_and_clear_bit(55, (unsigned long *)&status)) {
1600                 handled++;
1601                 intel_pt_interrupt();
1602         }
1603
1604         /*
1605          * Checkpointed counters can lead to 'spurious' PMIs because the
1606          * rollback caused by the PMI will have cleared the overflow status
1607          * bit. Therefore always force probe these counters.
1608          */
1609         status |= cpuc->intel_cp_status;
1610
1611         for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
1612                 struct perf_event *event = cpuc->events[bit];
1613
1614                 handled++;
1615
1616                 if (!test_bit(bit, cpuc->active_mask))
1617                         continue;
1618
1619                 if (!intel_pmu_save_and_restart(event))
1620                         continue;
1621
1622                 perf_sample_data_init(&data, 0, event->hw.last_period);
1623
1624                 if (has_branch_stack(event))
1625                         data.br_stack = &cpuc->lbr_stack;
1626
1627                 if (perf_event_overflow(event, &data, regs))
1628                         x86_pmu_stop(event, 0);
1629         }
1630
1631         /*
1632          * Repeat if there is more work to be done:
1633          */
1634         status = intel_pmu_get_status();
1635         if (status)
1636                 goto again;
1637
1638 done:
1639         intel_pmu_enable_all(0);
1640         /*
1641          * Only unmask the NMI after the overflow counters
1642          * have been reset. This avoids spurious NMIs on
1643          * Haswell CPUs.
1644          */
1645         if (x86_pmu.late_ack)
1646                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1647         return handled;
1648 }
1649
1650 static struct event_constraint *
1651 intel_bts_constraints(struct perf_event *event)
1652 {
1653         struct hw_perf_event *hwc = &event->hw;
1654         unsigned int hw_event, bts_event;
1655
1656         if (event->attr.freq)
1657                 return NULL;
1658
1659         hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
1660         bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1661
1662         if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
1663                 return &bts_constraint;
1664
1665         return NULL;
1666 }
1667
1668 static int intel_alt_er(int idx)
1669 {
1670         if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
1671                 return idx;
1672
1673         if (idx == EXTRA_REG_RSP_0)
1674                 return EXTRA_REG_RSP_1;
1675
1676         if (idx == EXTRA_REG_RSP_1)
1677                 return EXTRA_REG_RSP_0;
1678
1679         return idx;
1680 }
1681
1682 static void intel_fixup_er(struct perf_event *event, int idx)
1683 {
1684         event->hw.extra_reg.idx = idx;
1685
1686         if (idx == EXTRA_REG_RSP_0) {
1687                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1688                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
1689                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
1690         } else if (idx == EXTRA_REG_RSP_1) {
1691                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1692                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
1693                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
1694         }
1695 }
1696
1697 /*
1698  * manage allocation of shared extra msr for certain events
1699  *
1700  * sharing can be:
1701  * per-cpu: to be shared between the various events on a single PMU
1702  * per-core: per-cpu + shared by HT threads
1703  */
1704 static struct event_constraint *
1705 __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
1706                                    struct perf_event *event,
1707                                    struct hw_perf_event_extra *reg)
1708 {
1709         struct event_constraint *c = &emptyconstraint;
1710         struct er_account *era;
1711         unsigned long flags;
1712         int idx = reg->idx;
1713
1714         /*
1715          * reg->alloc can be set due to existing state, so for fake cpuc we
1716          * need to ignore this, otherwise we might fail to allocate proper fake
1717          * state for this extra reg constraint. Also see the comment below.
1718          */
1719         if (reg->alloc && !cpuc->is_fake)
1720                 return NULL; /* call x86_get_event_constraint() */
1721
1722 again:
1723         era = &cpuc->shared_regs->regs[idx];
1724         /*
1725          * we use spin_lock_irqsave() to avoid lockdep issues when
1726          * passing a fake cpuc
1727          */
1728         raw_spin_lock_irqsave(&era->lock, flags);
1729
1730         if (!atomic_read(&era->ref) || era->config == reg->config) {
1731
1732                 /*
1733                  * If its a fake cpuc -- as per validate_{group,event}() we
1734                  * shouldn't touch event state and we can avoid doing so
1735                  * since both will only call get_event_constraints() once
1736                  * on each event, this avoids the need for reg->alloc.
1737                  *
1738                  * Not doing the ER fixup will only result in era->reg being
1739                  * wrong, but since we won't actually try and program hardware
1740                  * this isn't a problem either.
1741                  */
1742                 if (!cpuc->is_fake) {
1743                         if (idx != reg->idx)
1744                                 intel_fixup_er(event, idx);
1745
1746                         /*
1747                          * x86_schedule_events() can call get_event_constraints()
1748                          * multiple times on events in the case of incremental
1749                          * scheduling(). reg->alloc ensures we only do the ER
1750                          * allocation once.
1751                          */
1752                         reg->alloc = 1;
1753                 }
1754
1755                 /* lock in msr value */
1756                 era->config = reg->config;
1757                 era->reg = reg->reg;
1758
1759                 /* one more user */
1760                 atomic_inc(&era->ref);
1761
1762                 /*
1763                  * need to call x86_get_event_constraint()
1764                  * to check if associated event has constraints
1765                  */
1766                 c = NULL;
1767         } else {
1768                 idx = intel_alt_er(idx);
1769                 if (idx != reg->idx) {
1770                         raw_spin_unlock_irqrestore(&era->lock, flags);
1771                         goto again;
1772                 }
1773         }
1774         raw_spin_unlock_irqrestore(&era->lock, flags);
1775
1776         return c;
1777 }
1778
1779 static void
1780 __intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
1781                                    struct hw_perf_event_extra *reg)
1782 {
1783         struct er_account *era;
1784
1785         /*
1786          * Only put constraint if extra reg was actually allocated. Also takes
1787          * care of event which do not use an extra shared reg.
1788          *
1789          * Also, if this is a fake cpuc we shouldn't touch any event state
1790          * (reg->alloc) and we don't care about leaving inconsistent cpuc state
1791          * either since it'll be thrown out.
1792          */
1793         if (!reg->alloc || cpuc->is_fake)
1794                 return;
1795
1796         era = &cpuc->shared_regs->regs[reg->idx];
1797
1798         /* one fewer user */
1799         atomic_dec(&era->ref);
1800
1801         /* allocate again next time */
1802         reg->alloc = 0;
1803 }
1804
1805 static struct event_constraint *
1806 intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
1807                               struct perf_event *event)
1808 {
1809         struct event_constraint *c = NULL, *d;
1810         struct hw_perf_event_extra *xreg, *breg;
1811
1812         xreg = &event->hw.extra_reg;
1813         if (xreg->idx != EXTRA_REG_NONE) {
1814                 c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
1815                 if (c == &emptyconstraint)
1816                         return c;
1817         }
1818         breg = &event->hw.branch_reg;
1819         if (breg->idx != EXTRA_REG_NONE) {
1820                 d = __intel_shared_reg_get_constraints(cpuc, event, breg);
1821                 if (d == &emptyconstraint) {
1822                         __intel_shared_reg_put_constraints(cpuc, xreg);
1823                         c = d;
1824                 }
1825         }
1826         return c;
1827 }
1828
1829 struct event_constraint *
1830 x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1831                           struct perf_event *event)
1832 {
1833         struct event_constraint *c;
1834
1835         if (x86_pmu.event_constraints) {
1836                 for_each_event_constraint(c, x86_pmu.event_constraints) {
1837                         if ((event->hw.config & c->cmask) == c->code) {
1838                                 event->hw.flags |= c->flags;
1839                                 return c;
1840                         }
1841                 }
1842         }
1843
1844         return &unconstrained;
1845 }
1846
1847 static struct event_constraint *
1848 intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1849                             struct perf_event *event)
1850 {
1851         struct event_constraint *c;
1852
1853         c = intel_bts_constraints(event);
1854         if (c)
1855                 return c;
1856
1857         c = intel_shared_regs_constraints(cpuc, event);
1858         if (c)
1859                 return c;
1860
1861         c = intel_pebs_constraints(event);
1862         if (c)
1863                 return c;
1864
1865         return x86_get_event_constraints(cpuc, idx, event);
1866 }
1867
1868 static void
1869 intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
1870                                         struct perf_event *event)
1871 {
1872         struct hw_perf_event_extra *reg;
1873
1874         reg = &event->hw.extra_reg;
1875         if (reg->idx != EXTRA_REG_NONE)
1876                 __intel_shared_reg_put_constraints(cpuc, reg);
1877
1878         reg = &event->hw.branch_reg;
1879         if (reg->idx != EXTRA_REG_NONE)
1880                 __intel_shared_reg_put_constraints(cpuc, reg);
1881 }
1882
1883 static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
1884                                         struct perf_event *event)
1885 {
1886         intel_put_shared_regs_event_constraints(cpuc, event);
1887 }
1888
1889 static void intel_pebs_aliases_core2(struct perf_event *event)
1890 {
1891         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
1892                 /*
1893                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
1894                  * (0x003c) so that we can use it with PEBS.
1895                  *
1896                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
1897                  * PEBS capable. However we can use INST_RETIRED.ANY_P
1898                  * (0x00c0), which is a PEBS capable event, to get the same
1899                  * count.
1900                  *
1901                  * INST_RETIRED.ANY_P counts the number of cycles that retires
1902                  * CNTMASK instructions. By setting CNTMASK to a value (16)
1903                  * larger than the maximum number of instructions that can be
1904                  * retired per cycle (4) and then inverting the condition, we
1905                  * count all cycles that retire 16 or less instructions, which
1906                  * is every cycle.
1907                  *
1908                  * Thereby we gain a PEBS capable cycle counter.
1909                  */
1910                 u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
1911
1912                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
1913                 event->hw.config = alt_config;
1914         }
1915 }
1916
1917 static void intel_pebs_aliases_snb(struct perf_event *event)
1918 {
1919         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
1920                 /*
1921                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
1922                  * (0x003c) so that we can use it with PEBS.
1923                  *
1924                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
1925                  * PEBS capable. However we can use UOPS_RETIRED.ALL
1926                  * (0x01c2), which is a PEBS capable event, to get the same
1927                  * count.
1928                  *
1929                  * UOPS_RETIRED.ALL counts the number of cycles that retires
1930                  * CNTMASK micro-ops. By setting CNTMASK to a value (16)
1931                  * larger than the maximum number of micro-ops that can be
1932                  * retired per cycle (4) and then inverting the condition, we
1933                  * count all cycles that retire 16 or less micro-ops, which
1934                  * is every cycle.
1935                  *
1936                  * Thereby we gain a PEBS capable cycle counter.
1937                  */
1938                 u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
1939
1940                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
1941                 event->hw.config = alt_config;
1942         }
1943 }
1944
1945 static int intel_pmu_hw_config(struct perf_event *event)
1946 {
1947         int ret = x86_pmu_hw_config(event);
1948
1949         if (ret)
1950                 return ret;
1951
1952         if (event->attr.precise_ip && x86_pmu.pebs_aliases)
1953                 x86_pmu.pebs_aliases(event);
1954
1955         if (needs_branch_stack(event)) {
1956                 ret = intel_pmu_setup_lbr_filter(event);
1957                 if (ret)
1958                         return ret;
1959
1960                 /*
1961                  * BTS is set up earlier in this path, so don't account twice
1962                  */
1963                 if (!intel_pmu_has_bts(event)) {
1964                         /* disallow lbr if conflicting events are present */
1965                         if (x86_add_exclusive(x86_lbr_exclusive_lbr))
1966                                 return -EBUSY;
1967
1968                         event->destroy = hw_perf_lbr_event_destroy;
1969                 }
1970         }
1971
1972         if (event->attr.type != PERF_TYPE_RAW)
1973                 return 0;
1974
1975         if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
1976                 return 0;
1977
1978         if (x86_pmu.version < 3)
1979                 return -EINVAL;
1980
1981         if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
1982                 return -EACCES;
1983
1984         event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
1985
1986         return 0;
1987 }
1988
1989 struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
1990 {
1991         if (x86_pmu.guest_get_msrs)
1992                 return x86_pmu.guest_get_msrs(nr);
1993         *nr = 0;
1994         return NULL;
1995 }
1996 EXPORT_SYMBOL_GPL(perf_guest_get_msrs);
1997
1998 static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr)
1999 {
2000         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2001         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2002
2003         arr[0].msr = MSR_CORE_PERF_GLOBAL_CTRL;
2004         arr[0].host = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask;
2005         arr[0].guest = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_host_mask;
2006         /*
2007          * If PMU counter has PEBS enabled it is not enough to disable counter
2008          * on a guest entry since PEBS memory write can overshoot guest entry
2009          * and corrupt guest memory. Disabling PEBS solves the problem.
2010          */
2011         arr[1].msr = MSR_IA32_PEBS_ENABLE;
2012         arr[1].host = cpuc->pebs_enabled;
2013         arr[1].guest = 0;
2014
2015         *nr = 2;
2016         return arr;
2017 }
2018
2019 static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
2020 {
2021         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2022         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
2023         int idx;
2024
2025         for (idx = 0; idx < x86_pmu.num_counters; idx++)  {
2026                 struct perf_event *event = cpuc->events[idx];
2027
2028                 arr[idx].msr = x86_pmu_config_addr(idx);
2029                 arr[idx].host = arr[idx].guest = 0;
2030
2031                 if (!test_bit(idx, cpuc->active_mask))
2032                         continue;
2033
2034                 arr[idx].host = arr[idx].guest =
2035                         event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;
2036
2037                 if (event->attr.exclude_host)
2038                         arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2039                 else if (event->attr.exclude_guest)
2040                         arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
2041         }
2042
2043         *nr = x86_pmu.num_counters;
2044         return arr;
2045 }
2046
2047 static void core_pmu_enable_event(struct perf_event *event)
2048 {
2049         if (!event->attr.exclude_host)
2050                 x86_pmu_enable_event(event);
2051 }
2052
2053 static void core_pmu_enable_all(int added)
2054 {
2055         struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2056         int idx;
2057
2058         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
2059                 struct hw_perf_event *hwc = &cpuc->events[idx]->hw;
2060
2061                 if (!test_bit(idx, cpuc->active_mask) ||
2062                                 cpuc->events[idx]->attr.exclude_host)
2063                         continue;
2064
2065                 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
2066         }
2067 }
2068
2069 static int hsw_hw_config(struct perf_event *event)
2070 {
2071         int ret = intel_pmu_hw_config(event);
2072
2073         if (ret)
2074                 return ret;
2075         if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
2076                 return 0;
2077         event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);
2078
2079         /*
2080          * IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
2081          * PEBS or in ANY thread mode. Since the results are non-sensical forbid
2082          * this combination.
2083          */
2084         if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
2085              ((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
2086               event->attr.precise_ip > 0))
2087                 return -EOPNOTSUPP;
2088
2089         if (event_is_checkpointed(event)) {
2090                 /*
2091                  * Sampling of checkpointed events can cause situations where
2092                  * the CPU constantly aborts because of a overflow, which is
2093                  * then checkpointed back and ignored. Forbid checkpointing
2094                  * for sampling.
2095                  *
2096                  * But still allow a long sampling period, so that perf stat
2097                  * from KVM works.
2098                  */
2099                 if (event->attr.sample_period > 0 &&
2100                     event->attr.sample_period < 0x7fffffff)
2101                         return -EOPNOTSUPP;
2102         }
2103         return 0;
2104 }
2105
2106 static struct event_constraint counter2_constraint =
2107                         EVENT_CONSTRAINT(0, 0x4, 0);
2108
2109 static struct event_constraint *
2110 hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
2111                           struct perf_event *event)
2112 {
2113         struct event_constraint *c;
2114
2115         c = intel_get_event_constraints(cpuc, idx, event);
2116
2117         /* Handle special quirk on in_tx_checkpointed only in counter 2 */
2118         if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
2119                 if (c->idxmsk64 & (1U << 2))
2120                         return &counter2_constraint;
2121                 return &emptyconstraint;
2122         }
2123
2124         return c;
2125 }
2126
2127 /*
2128  * Broadwell:
2129  *
2130  * The INST_RETIRED.ALL period always needs to have lowest 6 bits cleared
2131  * (BDM55) and it must not use a period smaller than 100 (BDM11). We combine
2132  * the two to enforce a minimum period of 128 (the smallest value that has bits
2133  * 0-5 cleared and >= 100).
2134  *
2135  * Because of how the code in x86_perf_event_set_period() works, the truncation
2136  * of the lower 6 bits is 'harmless' as we'll occasionally add a longer period
2137  * to make up for the 'lost' events due to carrying the 'error' in period_left.
2138  *
2139  * Therefore the effective (average) period matches the requested period,
2140  * despite coarser hardware granularity.
2141  */
2142 static unsigned bdw_limit_period(struct perf_event *event, unsigned left)
2143 {
2144         if ((event->hw.config & INTEL_ARCH_EVENT_MASK) ==
2145                         X86_CONFIG(.event=0xc0, .umask=0x01)) {
2146                 if (left < 128)
2147                         left = 128;
2148                 left &= ~0x3fu;
2149         }
2150         return left;
2151 }
2152
2153 PMU_FORMAT_ATTR(event,  "config:0-7"    );
2154 PMU_FORMAT_ATTR(umask,  "config:8-15"   );
2155 PMU_FORMAT_ATTR(edge,   "config:18"     );
2156 PMU_FORMAT_ATTR(pc,     "config:19"     );
2157 PMU_FORMAT_ATTR(any,    "config:21"     ); /* v3 + */
2158 PMU_FORMAT_ATTR(inv,    "config:23"     );
2159 PMU_FORMAT_ATTR(cmask,  "config:24-31"  );
2160 PMU_FORMAT_ATTR(in_tx,  "config:32");
2161 PMU_FORMAT_ATTR(in_tx_cp, "config:33");
2162
2163 static struct attribute *intel_arch_formats_attr[] = {
2164         &format_attr_event.attr,
2165         &format_attr_umask.attr,
2166         &format_attr_edge.attr,
2167         &format_attr_pc.attr,
2168         &format_attr_inv.attr,
2169         &format_attr_cmask.attr,
2170         NULL,
2171 };
2172
2173 ssize_t intel_event_sysfs_show(char *page, u64 config)
2174 {
2175         u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
2176
2177         return x86_event_sysfs_show(page, config, event);
2178 }
2179
2180 static __initconst const struct x86_pmu core_pmu = {
2181         .name                   = "core",
2182         .handle_irq             = x86_pmu_handle_irq,
2183         .disable_all            = x86_pmu_disable_all,
2184         .enable_all             = core_pmu_enable_all,
2185         .enable                 = core_pmu_enable_event,
2186         .disable                = x86_pmu_disable_event,
2187         .hw_config              = x86_pmu_hw_config,
2188         .schedule_events        = x86_schedule_events,
2189         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
2190         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
2191         .event_map              = intel_pmu_event_map,
2192         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
2193         .apic                   = 1,
2194         /*
2195          * Intel PMCs cannot be accessed sanely above 32 bit width,
2196          * so we install an artificial 1<<31 period regardless of
2197          * the generic event period:
2198          */
2199         .max_period             = (1ULL << 31) - 1,
2200         .get_event_constraints  = intel_get_event_constraints,
2201         .put_event_constraints  = intel_put_event_constraints,
2202         .event_constraints      = intel_core_event_constraints,
2203         .guest_get_msrs         = core_guest_get_msrs,
2204         .format_attrs           = intel_arch_formats_attr,
2205         .events_sysfs_show      = intel_event_sysfs_show,
2206 };
2207
2208 struct intel_shared_regs *allocate_shared_regs(int cpu)
2209 {
2210         struct intel_shared_regs *regs;
2211         int i;
2212
2213         regs = kzalloc_node(sizeof(struct intel_shared_regs),
2214                             GFP_KERNEL, cpu_to_node(cpu));
2215         if (regs) {
2216                 /*
2217                  * initialize the locks to keep lockdep happy
2218                  */
2219                 for (i = 0; i < EXTRA_REG_MAX; i++)
2220                         raw_spin_lock_init(&regs->regs[i].lock);
2221
2222                 regs->core_id = -1;
2223         }
2224         return regs;
2225 }
2226
2227 static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
2228 {
2229         struct intel_excl_cntrs *c;
2230         int i;
2231
2232         c = kzalloc_node(sizeof(struct intel_excl_cntrs),
2233                          GFP_KERNEL, cpu_to_node(cpu));
2234         if (c) {
2235                 raw_spin_lock_init(&c->lock);
2236                 for (i = 0; i < X86_PMC_IDX_MAX; i++) {
2237                         c->states[0].state[i] = INTEL_EXCL_UNUSED;
2238                         c->states[0].init_state[i] = INTEL_EXCL_UNUSED;
2239
2240                         c->states[1].state[i] = INTEL_EXCL_UNUSED;
2241                         c->states[1].init_state[i] = INTEL_EXCL_UNUSED;
2242                 }
2243                 c->core_id = -1;
2244         }
2245         return c;
2246 }
2247
2248 static int intel_pmu_cpu_prepare(int cpu)
2249 {
2250         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2251
2252         if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
2253                 cpuc->shared_regs = allocate_shared_regs(cpu);
2254                 if (!cpuc->shared_regs)
2255                         return NOTIFY_BAD;
2256         }
2257
2258         if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2259                 size_t sz = X86_PMC_IDX_MAX * sizeof(struct event_constraint);
2260
2261                 cpuc->constraint_list = kzalloc(sz, GFP_KERNEL);
2262                 if (!cpuc->constraint_list)
2263                         return NOTIFY_BAD;
2264
2265                 cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
2266                 if (!cpuc->excl_cntrs) {
2267                         kfree(cpuc->constraint_list);
2268                         kfree(cpuc->shared_regs);
2269                         return NOTIFY_BAD;
2270                 }
2271                 cpuc->excl_thread_id = 0;
2272         }
2273
2274         return NOTIFY_OK;
2275 }
2276
2277 static void intel_pmu_cpu_starting(int cpu)
2278 {
2279         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2280         int core_id = topology_core_id(cpu);
2281         int i;
2282
2283         init_debug_store_on_cpu(cpu);
2284         /*
2285          * Deal with CPUs that don't clear their LBRs on power-up.
2286          */
2287         intel_pmu_lbr_reset();
2288
2289         cpuc->lbr_sel = NULL;
2290
2291         if (!cpuc->shared_regs)
2292                 return;
2293
2294         if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
2295                 void **onln = &cpuc->kfree_on_online[X86_PERF_KFREE_SHARED];
2296
2297                 for_each_cpu(i, topology_thread_cpumask(cpu)) {
2298                         struct intel_shared_regs *pc;
2299
2300                         pc = per_cpu(cpu_hw_events, i).shared_regs;
2301                         if (pc && pc->core_id == core_id) {
2302                                 *onln = cpuc->shared_regs;
2303                                 cpuc->shared_regs = pc;
2304                                 break;
2305                         }
2306                 }
2307                 cpuc->shared_regs->core_id = core_id;
2308                 cpuc->shared_regs->refcnt++;
2309         }
2310
2311         if (x86_pmu.lbr_sel_map)
2312                 cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
2313
2314         if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2315                 for_each_cpu(i, topology_thread_cpumask(cpu)) {
2316                         struct intel_excl_cntrs *c;
2317
2318                         c = per_cpu(cpu_hw_events, i).excl_cntrs;
2319                         if (c && c->core_id == core_id) {
2320                                 cpuc->kfree_on_online[1] = cpuc->excl_cntrs;
2321                                 cpuc->excl_cntrs = c;
2322                                 cpuc->excl_thread_id = 1;
2323                                 break;
2324                         }
2325                 }
2326                 cpuc->excl_cntrs->core_id = core_id;
2327                 cpuc->excl_cntrs->refcnt++;
2328         }
2329 }
2330
2331 static void intel_pmu_cpu_dying(int cpu)
2332 {
2333         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2334         struct intel_shared_regs *pc;
2335         struct intel_excl_cntrs *c;
2336
2337         pc = cpuc->shared_regs;
2338         if (pc) {
2339                 if (pc->core_id == -1 || --pc->refcnt == 0)
2340                         kfree(pc);
2341                 cpuc->shared_regs = NULL;
2342         }
2343         c = cpuc->excl_cntrs;
2344         if (c) {
2345                 if (c->core_id == -1 || --c->refcnt == 0)
2346                         kfree(c);
2347                 cpuc->excl_cntrs = NULL;
2348                 kfree(cpuc->constraint_list);
2349                 cpuc->constraint_list = NULL;
2350         }
2351
2352         fini_debug_store_on_cpu(cpu);
2353 }
2354
2355 PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
2356
2357 PMU_FORMAT_ATTR(ldlat, "config1:0-15");
2358
2359 static struct attribute *intel_arch3_formats_attr[] = {
2360         &format_attr_event.attr,
2361         &format_attr_umask.attr,
2362         &format_attr_edge.attr,
2363         &format_attr_pc.attr,
2364         &format_attr_any.attr,
2365         &format_attr_inv.attr,
2366         &format_attr_cmask.attr,
2367         &format_attr_in_tx.attr,
2368         &format_attr_in_tx_cp.attr,
2369
2370         &format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
2371         &format_attr_ldlat.attr, /* PEBS load latency */
2372         NULL,
2373 };
2374
2375 static __initconst const struct x86_pmu intel_pmu = {
2376         .name                   = "Intel",
2377         .handle_irq             = intel_pmu_handle_irq,
2378         .disable_all            = intel_pmu_disable_all,
2379         .enable_all             = intel_pmu_enable_all,
2380         .enable                 = intel_pmu_enable_event,
2381         .disable                = intel_pmu_disable_event,
2382         .hw_config              = intel_pmu_hw_config,
2383         .schedule_events        = x86_schedule_events,
2384         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
2385         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
2386         .event_map              = intel_pmu_event_map,
2387         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
2388         .apic                   = 1,
2389         /*
2390          * Intel PMCs cannot be accessed sanely above 32 bit width,
2391          * so we install an artificial 1<<31 period regardless of
2392          * the generic event period:
2393          */
2394         .max_period             = (1ULL << 31) - 1,
2395         .get_event_constraints  = intel_get_event_constraints,
2396         .put_event_constraints  = intel_put_event_constraints,
2397         .pebs_aliases           = intel_pebs_aliases_core2,
2398
2399         .format_attrs           = intel_arch3_formats_attr,
2400         .events_sysfs_show      = intel_event_sysfs_show,
2401
2402         .cpu_prepare            = intel_pmu_cpu_prepare,
2403         .cpu_starting           = intel_pmu_cpu_starting,
2404         .cpu_dying              = intel_pmu_cpu_dying,
2405         .guest_get_msrs         = intel_guest_get_msrs,
2406         .sched_task             = intel_pmu_lbr_sched_task,
2407 };
2408
2409 static __init void intel_clovertown_quirk(void)
2410 {
2411         /*
2412          * PEBS is unreliable due to:
2413          *
2414          *   AJ67  - PEBS may experience CPL leaks
2415          *   AJ68  - PEBS PMI may be delayed by one event
2416          *   AJ69  - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
2417          *   AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
2418          *
2419          * AJ67 could be worked around by restricting the OS/USR flags.
2420          * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
2421          *
2422          * AJ106 could possibly be worked around by not allowing LBR
2423          *       usage from PEBS, including the fixup.
2424          * AJ68  could possibly be worked around by always programming
2425          *       a pebs_event_reset[0] value and coping with the lost events.
2426          *
2427          * But taken together it might just make sense to not enable PEBS on
2428          * these chips.
2429          */
2430         pr_warn("PEBS disabled due to CPU errata\n");
2431         x86_pmu.pebs = 0;
2432         x86_pmu.pebs_constraints = NULL;
2433 }
2434
2435 static int intel_snb_pebs_broken(int cpu)
2436 {
2437         u32 rev = UINT_MAX; /* default to broken for unknown models */
2438
2439         switch (cpu_data(cpu).x86_model) {
2440         case 42: /* SNB */
2441                 rev = 0x28;
2442                 break;
2443
2444         case 45: /* SNB-EP */
2445                 switch (cpu_data(cpu).x86_mask) {
2446                 case 6: rev = 0x618; break;
2447                 case 7: rev = 0x70c; break;
2448                 }
2449         }
2450
2451         return (cpu_data(cpu).microcode < rev);
2452 }
2453
2454 static void intel_snb_check_microcode(void)
2455 {
2456         int pebs_broken = 0;
2457         int cpu;
2458
2459         get_online_cpus();
2460         for_each_online_cpu(cpu) {
2461                 if ((pebs_broken = intel_snb_pebs_broken(cpu)))
2462                         break;
2463         }
2464         put_online_cpus();
2465
2466         if (pebs_broken == x86_pmu.pebs_broken)
2467                 return;
2468
2469         /*
2470          * Serialized by the microcode lock..
2471          */
2472         if (x86_pmu.pebs_broken) {
2473                 pr_info("PEBS enabled due to microcode update\n");
2474                 x86_pmu.pebs_broken = 0;
2475         } else {
2476                 pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
2477                 x86_pmu.pebs_broken = 1;
2478         }
2479 }
2480
2481 /*
2482  * Under certain circumstances, access certain MSR may cause #GP.
2483  * The function tests if the input MSR can be safely accessed.
2484  */
2485 static bool check_msr(unsigned long msr, u64 mask)
2486 {
2487         u64 val_old, val_new, val_tmp;
2488
2489         /*
2490          * Read the current value, change it and read it back to see if it
2491          * matches, this is needed to detect certain hardware emulators
2492          * (qemu/kvm) that don't trap on the MSR access and always return 0s.
2493          */
2494         if (rdmsrl_safe(msr, &val_old))
2495                 return false;
2496
2497         /*
2498          * Only change the bits which can be updated by wrmsrl.
2499          */
2500         val_tmp = val_old ^ mask;
2501         if (wrmsrl_safe(msr, val_tmp) ||
2502             rdmsrl_safe(msr, &val_new))
2503                 return false;
2504
2505         if (val_new != val_tmp)
2506                 return false;
2507
2508         /* Here it's sure that the MSR can be safely accessed.
2509          * Restore the old value and return.
2510          */
2511         wrmsrl(msr, val_old);
2512
2513         return true;
2514 }
2515
2516 static __init void intel_sandybridge_quirk(void)
2517 {
2518         x86_pmu.check_microcode = intel_snb_check_microcode;
2519         intel_snb_check_microcode();
2520 }
2521
2522 static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
2523         { PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
2524         { PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
2525         { PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
2526         { PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
2527         { PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
2528         { PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
2529         { PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
2530 };
2531
2532 static __init void intel_arch_events_quirk(void)
2533 {
2534         int bit;
2535
2536         /* disable event that reported as not presend by cpuid */
2537         for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
2538                 intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
2539                 pr_warn("CPUID marked event: \'%s\' unavailable\n",
2540                         intel_arch_events_map[bit].name);
2541         }
2542 }
2543
2544 static __init void intel_nehalem_quirk(void)
2545 {
2546         union cpuid10_ebx ebx;
2547
2548         ebx.full = x86_pmu.events_maskl;
2549         if (ebx.split.no_branch_misses_retired) {
2550                 /*
2551                  * Erratum AAJ80 detected, we work it around by using
2552                  * the BR_MISP_EXEC.ANY event. This will over-count
2553                  * branch-misses, but it's still much better than the
2554                  * architectural event which is often completely bogus:
2555                  */
2556                 intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
2557                 ebx.split.no_branch_misses_retired = 0;
2558                 x86_pmu.events_maskl = ebx.full;
2559                 pr_info("CPU erratum AAJ80 worked around\n");
2560         }
2561 }
2562
2563 EVENT_ATTR_STR(mem-loads,       mem_ld_hsw,     "event=0xcd,umask=0x1,ldlat=3");
2564 EVENT_ATTR_STR(mem-stores,      mem_st_hsw,     "event=0xd0,umask=0x82")
2565
2566 /* Haswell special events */
2567 EVENT_ATTR_STR(tx-start,        tx_start,       "event=0xc9,umask=0x1");
2568 EVENT_ATTR_STR(tx-commit,       tx_commit,      "event=0xc9,umask=0x2");
2569 EVENT_ATTR_STR(tx-abort,        tx_abort,       "event=0xc9,umask=0x4");
2570 EVENT_ATTR_STR(tx-capacity,     tx_capacity,    "event=0x54,umask=0x2");
2571 EVENT_ATTR_STR(tx-conflict,     tx_conflict,    "event=0x54,umask=0x1");
2572 EVENT_ATTR_STR(el-start,        el_start,       "event=0xc8,umask=0x1");
2573 EVENT_ATTR_STR(el-commit,       el_commit,      "event=0xc8,umask=0x2");
2574 EVENT_ATTR_STR(el-abort,        el_abort,       "event=0xc8,umask=0x4");
2575 EVENT_ATTR_STR(el-capacity,     el_capacity,    "event=0x54,umask=0x2");
2576 EVENT_ATTR_STR(el-conflict,     el_conflict,    "event=0x54,umask=0x1");
2577 EVENT_ATTR_STR(cycles-t,        cycles_t,       "event=0x3c,in_tx=1");
2578 EVENT_ATTR_STR(cycles-ct,       cycles_ct,      "event=0x3c,in_tx=1,in_tx_cp=1");
2579
2580 static struct attribute *hsw_events_attrs[] = {
2581         EVENT_PTR(tx_start),
2582         EVENT_PTR(tx_commit),
2583         EVENT_PTR(tx_abort),
2584         EVENT_PTR(tx_capacity),
2585         EVENT_PTR(tx_conflict),
2586         EVENT_PTR(el_start),
2587         EVENT_PTR(el_commit),
2588         EVENT_PTR(el_abort),
2589         EVENT_PTR(el_capacity),
2590         EVENT_PTR(el_conflict),
2591         EVENT_PTR(cycles_t),
2592         EVENT_PTR(cycles_ct),
2593         EVENT_PTR(mem_ld_hsw),
2594         EVENT_PTR(mem_st_hsw),
2595         NULL
2596 };
2597
2598 __init int intel_pmu_init(void)
2599 {
2600         union cpuid10_edx edx;
2601         union cpuid10_eax eax;
2602         union cpuid10_ebx ebx;
2603         struct event_constraint *c;
2604         unsigned int unused;
2605         struct extra_reg *er;
2606         int version, i;
2607
2608         if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
2609                 switch (boot_cpu_data.x86) {
2610                 case 0x6:
2611                         return p6_pmu_init();
2612                 case 0xb:
2613                         return knc_pmu_init();
2614                 case 0xf:
2615                         return p4_pmu_init();
2616                 }
2617                 return -ENODEV;
2618         }
2619
2620         /*
2621          * Check whether the Architectural PerfMon supports
2622          * Branch Misses Retired hw_event or not.
2623          */
2624         cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
2625         if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
2626                 return -ENODEV;
2627
2628         version = eax.split.version_id;
2629         if (version < 2)
2630                 x86_pmu = core_pmu;
2631         else
2632                 x86_pmu = intel_pmu;
2633
2634         x86_pmu.version                 = version;
2635         x86_pmu.num_counters            = eax.split.num_counters;
2636         x86_pmu.cntval_bits             = eax.split.bit_width;
2637         x86_pmu.cntval_mask             = (1ULL << eax.split.bit_width) - 1;
2638
2639         x86_pmu.events_maskl            = ebx.full;
2640         x86_pmu.events_mask_len         = eax.split.mask_length;
2641
2642         x86_pmu.max_pebs_events         = min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);
2643
2644         /*
2645          * Quirk: v2 perfmon does not report fixed-purpose events, so
2646          * assume at least 3 events:
2647          */
2648         if (version > 1)
2649                 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
2650
2651         if (boot_cpu_has(X86_FEATURE_PDCM)) {
2652                 u64 capabilities;
2653
2654                 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
2655                 x86_pmu.intel_cap.capabilities = capabilities;
2656         }
2657
2658         intel_ds_init();
2659
2660         x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
2661
2662         /*
2663          * Install the hw-cache-events table:
2664          */
2665         switch (boot_cpu_data.x86_model) {
2666         case 14: /* 65nm Core "Yonah" */
2667                 pr_cont("Core events, ");
2668                 break;
2669
2670         case 15: /* 65nm Core2 "Merom"          */
2671                 x86_add_quirk(intel_clovertown_quirk);
2672         case 22: /* 65nm Core2 "Merom-L"        */
2673         case 23: /* 45nm Core2 "Penryn"         */
2674         case 29: /* 45nm Core2 "Dunnington (MP) */
2675                 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
2676                        sizeof(hw_cache_event_ids));
2677
2678                 intel_pmu_lbr_init_core();
2679
2680                 x86_pmu.event_constraints = intel_core2_event_constraints;
2681                 x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
2682                 pr_cont("Core2 events, ");
2683                 break;
2684
2685         case 30: /* 45nm Nehalem    */
2686         case 26: /* 45nm Nehalem-EP */
2687         case 46: /* 45nm Nehalem-EX */
2688                 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
2689                        sizeof(hw_cache_event_ids));
2690                 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
2691                        sizeof(hw_cache_extra_regs));
2692
2693                 intel_pmu_lbr_init_nhm();
2694
2695                 x86_pmu.event_constraints = intel_nehalem_event_constraints;
2696                 x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
2697                 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
2698                 x86_pmu.extra_regs = intel_nehalem_extra_regs;
2699
2700                 x86_pmu.cpu_events = nhm_events_attrs;
2701
2702                 /* UOPS_ISSUED.STALLED_CYCLES */
2703                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2704                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2705                 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
2706                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2707                         X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
2708
2709                 x86_add_quirk(intel_nehalem_quirk);
2710
2711                 pr_cont("Nehalem events, ");
2712                 break;
2713
2714         case 28: /* 45nm Atom "Pineview"   */
2715         case 38: /* 45nm Atom "Lincroft"   */
2716         case 39: /* 32nm Atom "Penwell"    */
2717         case 53: /* 32nm Atom "Cloverview" */
2718         case 54: /* 32nm Atom "Cedarview"  */
2719                 memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
2720                        sizeof(hw_cache_event_ids));
2721
2722                 intel_pmu_lbr_init_atom();
2723
2724                 x86_pmu.event_constraints = intel_gen_event_constraints;
2725                 x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
2726                 pr_cont("Atom events, ");
2727                 break;
2728
2729         case 55: /* 22nm Atom "Silvermont"                */
2730         case 76: /* 14nm Atom "Airmont"                   */
2731         case 77: /* 22nm Atom "Silvermont Avoton/Rangely" */
2732                 memcpy(hw_cache_event_ids, slm_hw_cache_event_ids,
2733                         sizeof(hw_cache_event_ids));
2734                 memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs,
2735                        sizeof(hw_cache_extra_regs));
2736
2737                 intel_pmu_lbr_init_atom();
2738
2739                 x86_pmu.event_constraints = intel_slm_event_constraints;
2740                 x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
2741                 x86_pmu.extra_regs = intel_slm_extra_regs;
2742                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2743                 pr_cont("Silvermont events, ");
2744                 break;
2745
2746         case 37: /* 32nm Westmere    */
2747         case 44: /* 32nm Westmere-EP */
2748         case 47: /* 32nm Westmere-EX */
2749                 memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
2750                        sizeof(hw_cache_event_ids));
2751                 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
2752                        sizeof(hw_cache_extra_regs));
2753
2754                 intel_pmu_lbr_init_nhm();
2755
2756                 x86_pmu.event_constraints = intel_westmere_event_constraints;
2757                 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
2758                 x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
2759                 x86_pmu.extra_regs = intel_westmere_extra_regs;
2760                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2761
2762                 x86_pmu.cpu_events = nhm_events_attrs;
2763
2764                 /* UOPS_ISSUED.STALLED_CYCLES */
2765                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2766                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2767                 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
2768                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2769                         X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
2770
2771                 pr_cont("Westmere events, ");
2772                 break;
2773
2774         case 42: /* 32nm SandyBridge         */
2775         case 45: /* 32nm SandyBridge-E/EN/EP */
2776                 x86_add_quirk(intel_sandybridge_quirk);
2777                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
2778                        sizeof(hw_cache_event_ids));
2779                 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
2780                        sizeof(hw_cache_extra_regs));
2781
2782                 intel_pmu_lbr_init_snb();
2783
2784                 x86_pmu.event_constraints = intel_snb_event_constraints;
2785                 x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
2786                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2787                 if (boot_cpu_data.x86_model == 45)
2788                         x86_pmu.extra_regs = intel_snbep_extra_regs;
2789                 else
2790                         x86_pmu.extra_regs = intel_snb_extra_regs;
2791                 /* all extra regs are per-cpu when HT is on */
2792                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2793                 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
2794
2795                 x86_pmu.cpu_events = snb_events_attrs;
2796
2797                 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
2798                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2799                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2800                 /* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
2801                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2802                         X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
2803
2804                 pr_cont("SandyBridge events, ");
2805                 break;
2806
2807         case 58: /* 22nm IvyBridge       */
2808         case 62: /* 22nm IvyBridge-EP/EX */
2809                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
2810                        sizeof(hw_cache_event_ids));
2811                 /* dTLB-load-misses on IVB is different than SNB */
2812                 hw_cache_event_ids[C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = 0x8108; /* DTLB_LOAD_MISSES.DEMAND_LD_MISS_CAUSES_A_WALK */
2813
2814                 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
2815                        sizeof(hw_cache_extra_regs));
2816
2817                 intel_pmu_lbr_init_snb();
2818
2819                 x86_pmu.event_constraints = intel_ivb_event_constraints;
2820                 x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
2821                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2822                 if (boot_cpu_data.x86_model == 62)
2823                         x86_pmu.extra_regs = intel_snbep_extra_regs;
2824                 else
2825                         x86_pmu.extra_regs = intel_snb_extra_regs;
2826                 /* all extra regs are per-cpu when HT is on */
2827                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2828                 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
2829
2830                 x86_pmu.cpu_events = snb_events_attrs;
2831
2832                 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
2833                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2834                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2835
2836                 pr_cont("IvyBridge events, ");
2837                 break;
2838
2839
2840         case 60: /* 22nm Haswell Core */
2841         case 63: /* 22nm Haswell Server */
2842         case 69: /* 22nm Haswell ULT */
2843         case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */
2844                 x86_pmu.late_ack = true;
2845                 memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
2846                 memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
2847
2848                 intel_pmu_lbr_init_hsw();
2849
2850                 x86_pmu.event_constraints = intel_hsw_event_constraints;
2851                 x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
2852                 x86_pmu.extra_regs = intel_snbep_extra_regs;
2853                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2854                 /* all extra regs are per-cpu when HT is on */
2855                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2856                 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
2857
2858                 x86_pmu.hw_config = hsw_hw_config;
2859                 x86_pmu.get_event_constraints = hsw_get_event_constraints;
2860                 x86_pmu.cpu_events = hsw_events_attrs;
2861                 x86_pmu.lbr_double_abort = true;
2862                 pr_cont("Haswell events, ");
2863                 break;
2864
2865         case 61: /* 14nm Broadwell Core-M */
2866         case 86: /* 14nm Broadwell Xeon D */
2867                 x86_pmu.late_ack = true;
2868                 memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
2869                 memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
2870
2871                 /* L3_MISS_LOCAL_DRAM is BIT(26) in Broadwell */
2872                 hw_cache_extra_regs[C(LL)][C(OP_READ)][C(RESULT_MISS)] = HSW_DEMAND_READ |
2873                                                                          BDW_L3_MISS|HSW_SNOOP_DRAM;
2874                 hw_cache_extra_regs[C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = HSW_DEMAND_WRITE|BDW_L3_MISS|
2875                                                                           HSW_SNOOP_DRAM;
2876                 hw_cache_extra_regs[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = HSW_DEMAND_READ|
2877                                                                              BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
2878                 hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
2879                                                                               BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
2880
2881                 intel_pmu_lbr_init_snb();
2882
2883                 x86_pmu.event_constraints = intel_bdw_event_constraints;
2884                 x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
2885                 x86_pmu.extra_regs = intel_snbep_extra_regs;
2886                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2887                 /* all extra regs are per-cpu when HT is on */
2888                 x86_pmu.flags |= PMU_FL_HAS_RSP_1;
2889                 x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
2890
2891                 x86_pmu.hw_config = hsw_hw_config;
2892                 x86_pmu.get_event_constraints = hsw_get_event_constraints;
2893                 x86_pmu.cpu_events = hsw_events_attrs;
2894                 x86_pmu.limit_period = bdw_limit_period;
2895                 pr_cont("Broadwell events, ");
2896                 break;
2897
2898         default:
2899                 switch (x86_pmu.version) {
2900                 case 1:
2901                         x86_pmu.event_constraints = intel_v1_event_constraints;
2902                         pr_cont("generic architected perfmon v1, ");
2903                         break;
2904                 default:
2905                         /*
2906                          * default constraints for v2 and up
2907                          */
2908                         x86_pmu.event_constraints = intel_gen_event_constraints;
2909                         pr_cont("generic architected perfmon, ");
2910                         break;
2911                 }
2912         }
2913
2914         if (x86_pmu.num_counters > INTEL_PMC_MAX_GENERIC) {
2915                 WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
2916                      x86_pmu.num_counters, INTEL_PMC_MAX_GENERIC);
2917                 x86_pmu.num_counters = INTEL_PMC_MAX_GENERIC;
2918         }
2919         x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1;
2920
2921         if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
2922                 WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
2923                      x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
2924                 x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
2925         }
2926
2927         x86_pmu.intel_ctrl |=
2928                 ((1LL << x86_pmu.num_counters_fixed)-1) << INTEL_PMC_IDX_FIXED;
2929
2930         if (x86_pmu.event_constraints) {
2931                 /*
2932                  * event on fixed counter2 (REF_CYCLES) only works on this
2933                  * counter, so do not extend mask to generic counters
2934                  */
2935                 for_each_event_constraint(c, x86_pmu.event_constraints) {
2936                         if (c->cmask != FIXED_EVENT_FLAGS
2937                             || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
2938                                 continue;
2939                         }
2940
2941                         c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
2942                         c->weight += x86_pmu.num_counters;
2943                 }
2944         }
2945
2946         /*
2947          * Access LBR MSR may cause #GP under certain circumstances.
2948          * E.g. KVM doesn't support LBR MSR
2949          * Check all LBT MSR here.
2950          * Disable LBR access if any LBR MSRs can not be accessed.
2951          */
2952         if (x86_pmu.lbr_nr && !check_msr(x86_pmu.lbr_tos, 0x3UL))
2953                 x86_pmu.lbr_nr = 0;
2954         for (i = 0; i < x86_pmu.lbr_nr; i++) {
2955                 if (!(check_msr(x86_pmu.lbr_from + i, 0xffffUL) &&
2956                       check_msr(x86_pmu.lbr_to + i, 0xffffUL)))
2957                         x86_pmu.lbr_nr = 0;
2958         }
2959
2960         /*
2961          * Access extra MSR may cause #GP under certain circumstances.
2962          * E.g. KVM doesn't support offcore event
2963          * Check all extra_regs here.
2964          */
2965         if (x86_pmu.extra_regs) {
2966                 for (er = x86_pmu.extra_regs; er->msr; er++) {
2967                         er->extra_msr_access = check_msr(er->msr, 0x1ffUL);
2968                         /* Disable LBR select mapping */
2969                         if ((er->idx == EXTRA_REG_LBR) && !er->extra_msr_access)
2970                                 x86_pmu.lbr_sel_map = NULL;
2971                 }
2972         }
2973
2974         /* Support full width counters using alternative MSR range */
2975         if (x86_pmu.intel_cap.full_width_write) {
2976                 x86_pmu.max_period = x86_pmu.cntval_mask;
2977                 x86_pmu.perfctr = MSR_IA32_PMC0;
2978                 pr_cont("full-width counters, ");
2979         }
2980
2981         return 0;
2982 }