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(0x013c, 2), /* CPU_CLK_UNHALTED.REF */
 173         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
 174         EVENT_CONSTRAINT_END
 175 };
 176
 177 static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
 178         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 179         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
 180         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
 181         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
 182         EVENT_EXTRA_END
 183 };
 184
 185 static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
 186         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 187         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
 188         INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
 189         INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
 190         EVENT_EXTRA_END
 191 };
 192
 193 EVENT_ATTR_STR(mem-loads, mem_ld_nhm, "event=0x0b,umask=0x10,ldlat=3");
 194 EVENT_ATTR_STR(mem-loads, mem_ld_snb, "event=0xcd,umask=0x1,ldlat=3");
 195 EVENT_ATTR_STR(mem-stores, mem_st_snb, "event=0xcd,umask=0x2");
 196
 197 struct attribute *nhm_events_attrs[] = {
 198         EVENT_PTR(mem_ld_nhm),
 199         NULL,
 200 };
 201
 202 struct attribute *snb_events_attrs[] = {
 203         EVENT_PTR(mem_ld_snb),
 204         EVENT_PTR(mem_st_snb),
 205         NULL,
 206 };
 207
 208 static struct event_constraint intel_hsw_event_constraints[] = {
 209         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
 210         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
 211         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
 212         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.* */
 213         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
 214         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
 215         /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
 216         INTEL_EVENT_CONSTRAINT(0x08a3, 0x4),
 217         /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
 218         INTEL_EVENT_CONSTRAINT(0x0ca3, 0x4),
 219         /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
 220         INTEL_EVENT_CONSTRAINT(0x04a3, 0xf),
 221         EVENT_CONSTRAINT_END
 222 };
 223
 224 static u64 intel_pmu_event_map(int hw_event)
 225 {
 226         return intel_perfmon_event_map[hw_event];
 227 }
 228
 229 #define SNB_DMND_DATA_RD        (1ULL << 0)
 230 #define SNB_DMND_RFO            (1ULL << 1)
 231 #define SNB_DMND_IFETCH         (1ULL << 2)
 232 #define SNB_DMND_WB             (1ULL << 3)
 233 #define SNB_PF_DATA_RD          (1ULL << 4)
 234 #define SNB_PF_RFO              (1ULL << 5)
 235 #define SNB_PF_IFETCH           (1ULL << 6)
 236 #define SNB_LLC_DATA_RD         (1ULL << 7)
 237 #define SNB_LLC_RFO             (1ULL << 8)
 238 #define SNB_LLC_IFETCH          (1ULL << 9)
 239 #define SNB_BUS_LOCKS           (1ULL << 10)
 240 #define SNB_STRM_ST             (1ULL << 11)
 241 #define SNB_OTHER               (1ULL << 15)
 242 #define SNB_RESP_ANY            (1ULL << 16)
 243 #define SNB_NO_SUPP             (1ULL << 17)
 244 #define SNB_LLC_HITM            (1ULL << 18)
 245 #define SNB_LLC_HITE            (1ULL << 19)
 246 #define SNB_LLC_HITS            (1ULL << 20)
 247 #define SNB_LLC_HITF            (1ULL << 21)
 248 #define SNB_LOCAL               (1ULL << 22)
 249 #define SNB_REMOTE              (0xffULL << 23)
 250 #define SNB_SNP_NONE            (1ULL << 31)
 251 #define SNB_SNP_NOT_NEEDED      (1ULL << 32)
 252 #define SNB_SNP_MISS            (1ULL << 33)
 253 #define SNB_NO_FWD              (1ULL << 34)
 254 #define SNB_SNP_FWD             (1ULL << 35)
 255 #define SNB_HITM                (1ULL << 36)
 256 #define SNB_NON_DRAM            (1ULL << 37)
 257
 258 #define SNB_DMND_READ           (SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
 259 #define SNB_DMND_WRITE          (SNB_DMND_RFO|SNB_LLC_RFO)
 260 #define SNB_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
 261
 262 #define SNB_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
 263                                  SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
 264                                  SNB_HITM)
 265
 266 #define SNB_DRAM_ANY            (SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
 267 #define SNB_DRAM_REMOTE         (SNB_REMOTE|SNB_SNP_ANY)
 268
 269 #define SNB_L3_ACCESS           SNB_RESP_ANY
 270 #define SNB_L3_MISS             (SNB_DRAM_ANY|SNB_NON_DRAM)
 271
 272 static __initconst const u64 snb_hw_cache_extra_regs
 273                                 [PERF_COUNT_HW_CACHE_MAX]
 274                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 275                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 276 {
 277  [ C(LL  ) ] = {
 278         [ C(OP_READ) ] = {
 279                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
 280                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_L3_MISS,
 281         },
 282         [ C(OP_WRITE) ] = {
 283                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
 284                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_L3_MISS,
 285         },
 286         [ C(OP_PREFETCH) ] = {
 287                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
 288                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
 289         },
 290  },
 291  [ C(NODE) ] = {
 292         [ C(OP_READ) ] = {
 293                 [ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
 294                 [ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
 295         },
 296         [ C(OP_WRITE) ] = {
 297                 [ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
 298                 [ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
 299         },
 300         [ C(OP_PREFETCH) ] = {
 301                 [ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
 302                 [ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
 303         },
 304  },
 305 };
 306
 307 static __initconst const u64 snb_hw_cache_event_ids
 308                                 [PERF_COUNT_HW_CACHE_MAX]
 309                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 310                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 311 {
 312  [ C(L1D) ] = {
 313         [ C(OP_READ) ] = {
 314                 [ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS        */
 315                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPLACEMENT              */
 316         },
 317         [ C(OP_WRITE) ] = {
 318                 [ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES       */
 319                 [ C(RESULT_MISS)   ] = 0x0851, /* L1D.ALL_M_REPLACEMENT        */
 320         },
 321         [ C(OP_PREFETCH) ] = {
 322                 [ C(RESULT_ACCESS) ] = 0x0,
 323                 [ C(RESULT_MISS)   ] = 0x024e, /* HW_PRE_REQ.DL1_MISS          */
 324         },
 325  },
 326  [ C(L1I ) ] = {
 327         [ C(OP_READ) ] = {
 328                 [ C(RESULT_ACCESS) ] = 0x0,
 329                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACHE.MISSES */
 330         },
 331         [ C(OP_WRITE) ] = {
 332                 [ C(RESULT_ACCESS) ] = -1,
 333                 [ C(RESULT_MISS)   ] = -1,
 334         },
 335         [ C(OP_PREFETCH) ] = {
 336                 [ C(RESULT_ACCESS) ] = 0x0,
 337                 [ C(RESULT_MISS)   ] = 0x0,
 338         },
 339  },
 340  [ C(LL  ) ] = {
 341         [ C(OP_READ) ] = {
 342                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 343                 [ C(RESULT_ACCESS) ] = 0x01b7,
 344                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 345                 [ C(RESULT_MISS)   ] = 0x01b7,
 346         },
 347         [ C(OP_WRITE) ] = {
 348                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 349                 [ C(RESULT_ACCESS) ] = 0x01b7,
 350                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 351                 [ C(RESULT_MISS)   ] = 0x01b7,
 352         },
 353         [ C(OP_PREFETCH) ] = {
 354                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 355                 [ C(RESULT_ACCESS) ] = 0x01b7,
 356                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 357                 [ C(RESULT_MISS)   ] = 0x01b7,
 358         },
 359  },
 360  [ C(DTLB) ] = {
 361         [ C(OP_READ) ] = {
 362                 [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
 363                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
 364         },
 365         [ C(OP_WRITE) ] = {
 366                 [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
 367                 [ C(RESULT_MISS)   ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
 368         },
 369         [ C(OP_PREFETCH) ] = {
 370                 [ C(RESULT_ACCESS) ] = 0x0,
 371                 [ C(RESULT_MISS)   ] = 0x0,
 372         },
 373  },
 374  [ C(ITLB) ] = {
 375         [ C(OP_READ) ] = {
 376                 [ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT         */
 377                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK    */
 378         },
 379         [ C(OP_WRITE) ] = {
 380                 [ C(RESULT_ACCESS) ] = -1,
 381                 [ C(RESULT_MISS)   ] = -1,
 382         },
 383         [ C(OP_PREFETCH) ] = {
 384                 [ C(RESULT_ACCESS) ] = -1,
 385                 [ C(RESULT_MISS)   ] = -1,
 386         },
 387  },
 388  [ C(BPU ) ] = {
 389         [ C(OP_READ) ] = {
 390                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 391                 [ C(RESULT_MISS)   ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
 392         },
 393         [ C(OP_WRITE) ] = {
 394                 [ C(RESULT_ACCESS) ] = -1,
 395                 [ C(RESULT_MISS)   ] = -1,
 396         },
 397         [ C(OP_PREFETCH) ] = {
 398                 [ C(RESULT_ACCESS) ] = -1,
 399                 [ C(RESULT_MISS)   ] = -1,
 400         },
 401  },
 402  [ C(NODE) ] = {
 403         [ C(OP_READ) ] = {
 404                 [ C(RESULT_ACCESS) ] = 0x01b7,
 405                 [ C(RESULT_MISS)   ] = 0x01b7,
 406         },
 407         [ C(OP_WRITE) ] = {
 408                 [ C(RESULT_ACCESS) ] = 0x01b7,
 409                 [ C(RESULT_MISS)   ] = 0x01b7,
 410         },
 411         [ C(OP_PREFETCH) ] = {
 412                 [ C(RESULT_ACCESS) ] = 0x01b7,
 413                 [ C(RESULT_MISS)   ] = 0x01b7,
 414         },
 415  },
 416
 417 };
 418
 419 static __initconst const u64 westmere_hw_cache_event_ids
 420                                 [PERF_COUNT_HW_CACHE_MAX]
 421                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 422                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 423 {
 424  [ C(L1D) ] = {
 425         [ C(OP_READ) ] = {
 426                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 427                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
 428         },
 429         [ C(OP_WRITE) ] = {
 430                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 431                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
 432         },
 433         [ C(OP_PREFETCH) ] = {
 434                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
 435                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
 436         },
 437  },
 438  [ C(L1I ) ] = {
 439         [ C(OP_READ) ] = {
 440                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
 441                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
 442         },
 443         [ C(OP_WRITE) ] = {
 444                 [ C(RESULT_ACCESS) ] = -1,
 445                 [ C(RESULT_MISS)   ] = -1,
 446         },
 447         [ C(OP_PREFETCH) ] = {
 448                 [ C(RESULT_ACCESS) ] = 0x0,
 449                 [ C(RESULT_MISS)   ] = 0x0,
 450         },
 451  },
 452  [ C(LL  ) ] = {
 453         [ C(OP_READ) ] = {
 454                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 455                 [ C(RESULT_ACCESS) ] = 0x01b7,
 456                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 457                 [ C(RESULT_MISS)   ] = 0x01b7,
 458         },
 459         /*
 460          * Use RFO, not WRITEBACK, because a write miss would typically occur
 461          * on RFO.
 462          */
 463         [ C(OP_WRITE) ] = {
 464                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 465                 [ C(RESULT_ACCESS) ] = 0x01b7,
 466                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 467                 [ C(RESULT_MISS)   ] = 0x01b7,
 468         },
 469         [ C(OP_PREFETCH) ] = {
 470                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 471                 [ C(RESULT_ACCESS) ] = 0x01b7,
 472                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 473                 [ C(RESULT_MISS)   ] = 0x01b7,
 474         },
 475  },
 476  [ C(DTLB) ] = {
 477         [ C(OP_READ) ] = {
 478                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 479                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
 480         },
 481         [ C(OP_WRITE) ] = {
 482                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 483                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
 484         },
 485         [ C(OP_PREFETCH) ] = {
 486                 [ C(RESULT_ACCESS) ] = 0x0,
 487                 [ C(RESULT_MISS)   ] = 0x0,
 488         },
 489  },
 490  [ C(ITLB) ] = {
 491         [ C(OP_READ) ] = {
 492                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
 493                 [ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.ANY              */
 494         },
 495         [ C(OP_WRITE) ] = {
 496                 [ C(RESULT_ACCESS) ] = -1,
 497                 [ C(RESULT_MISS)   ] = -1,
 498         },
 499         [ C(OP_PREFETCH) ] = {
 500                 [ C(RESULT_ACCESS) ] = -1,
 501                 [ C(RESULT_MISS)   ] = -1,
 502         },
 503  },
 504  [ C(BPU ) ] = {
 505         [ C(OP_READ) ] = {
 506                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 507                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
 508         },
 509         [ C(OP_WRITE) ] = {
 510                 [ C(RESULT_ACCESS) ] = -1,
 511                 [ C(RESULT_MISS)   ] = -1,
 512         },
 513         [ C(OP_PREFETCH) ] = {
 514                 [ C(RESULT_ACCESS) ] = -1,
 515                 [ C(RESULT_MISS)   ] = -1,
 516         },
 517  },
 518  [ C(NODE) ] = {
 519         [ C(OP_READ) ] = {
 520                 [ C(RESULT_ACCESS) ] = 0x01b7,
 521                 [ C(RESULT_MISS)   ] = 0x01b7,
 522         },
 523         [ C(OP_WRITE) ] = {
 524                 [ C(RESULT_ACCESS) ] = 0x01b7,
 525                 [ C(RESULT_MISS)   ] = 0x01b7,
 526         },
 527         [ C(OP_PREFETCH) ] = {
 528                 [ C(RESULT_ACCESS) ] = 0x01b7,
 529                 [ C(RESULT_MISS)   ] = 0x01b7,
 530         },
 531  },
 532 };
 533
 534 /*
 535  * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
 536  * See IA32 SDM Vol 3B 30.6.1.3
 537  */
 538
 539 #define NHM_DMND_DATA_RD        (1 << 0)
 540 #define NHM_DMND_RFO            (1 << 1)
 541 #define NHM_DMND_IFETCH         (1 << 2)
 542 #define NHM_DMND_WB             (1 << 3)
 543 #define NHM_PF_DATA_RD          (1 << 4)
 544 #define NHM_PF_DATA_RFO         (1 << 5)
 545 #define NHM_PF_IFETCH           (1 << 6)
 546 #define NHM_OFFCORE_OTHER       (1 << 7)
 547 #define NHM_UNCORE_HIT          (1 << 8)
 548 #define NHM_OTHER_CORE_HIT_SNP  (1 << 9)
 549 #define NHM_OTHER_CORE_HITM     (1 << 10)
 550                                 /* reserved */
 551 #define NHM_REMOTE_CACHE_FWD    (1 << 12)
 552 #define NHM_REMOTE_DRAM         (1 << 13)
 553 #define NHM_LOCAL_DRAM          (1 << 14)
 554 #define NHM_NON_DRAM            (1 << 15)
 555
 556 #define NHM_LOCAL               (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
 557 #define NHM_REMOTE              (NHM_REMOTE_DRAM)
 558
 559 #define NHM_DMND_READ           (NHM_DMND_DATA_RD)
 560 #define NHM_DMND_WRITE          (NHM_DMND_RFO|NHM_DMND_WB)
 561 #define NHM_DMND_PREFETCH       (NHM_PF_DATA_RD|NHM_PF_DATA_RFO)
 562
 563 #define NHM_L3_HIT      (NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
 564 #define NHM_L3_MISS     (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
 565 #define NHM_L3_ACCESS   (NHM_L3_HIT|NHM_L3_MISS)
 566
 567 static __initconst const u64 nehalem_hw_cache_extra_regs
 568                                 [PERF_COUNT_HW_CACHE_MAX]
 569                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 570                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 571 {
 572  [ C(LL  ) ] = {
 573         [ C(OP_READ) ] = {
 574                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
 575                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_L3_MISS,
 576         },
 577         [ C(OP_WRITE) ] = {
 578                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
 579                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_L3_MISS,
 580         },
 581         [ C(OP_PREFETCH) ] = {
 582                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
 583                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
 584         },
 585  },
 586  [ C(NODE) ] = {
 587         [ C(OP_READ) ] = {
 588                 [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
 589                 [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_REMOTE,
 590         },
 591         [ C(OP_WRITE) ] = {
 592                 [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
 593                 [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_REMOTE,
 594         },
 595         [ C(OP_PREFETCH) ] = {
 596                 [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
 597                 [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_REMOTE,
 598         },
 599  },
 600 };
 601
 602 static __initconst const u64 nehalem_hw_cache_event_ids
 603                                 [PERF_COUNT_HW_CACHE_MAX]
 604                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 605                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 606 {
 607  [ C(L1D) ] = {
 608         [ C(OP_READ) ] = {
 609                 [ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
 610                 [ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
 611         },
 612         [ C(OP_WRITE) ] = {
 613                 [ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
 614                 [ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
 615         },
 616         [ C(OP_PREFETCH) ] = {
 617                 [ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
 618                 [ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
 619         },
 620  },
 621  [ C(L1I ) ] = {
 622         [ C(OP_READ) ] = {
 623                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
 624                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
 625         },
 626         [ C(OP_WRITE) ] = {
 627                 [ C(RESULT_ACCESS) ] = -1,
 628                 [ C(RESULT_MISS)   ] = -1,
 629         },
 630         [ C(OP_PREFETCH) ] = {
 631                 [ C(RESULT_ACCESS) ] = 0x0,
 632                 [ C(RESULT_MISS)   ] = 0x0,
 633         },
 634  },
 635  [ C(LL  ) ] = {
 636         [ C(OP_READ) ] = {
 637                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 638                 [ C(RESULT_ACCESS) ] = 0x01b7,
 639                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 640                 [ C(RESULT_MISS)   ] = 0x01b7,
 641         },
 642         /*
 643          * Use RFO, not WRITEBACK, because a write miss would typically occur
 644          * on RFO.
 645          */
 646         [ C(OP_WRITE) ] = {
 647                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 648                 [ C(RESULT_ACCESS) ] = 0x01b7,
 649                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 650                 [ C(RESULT_MISS)   ] = 0x01b7,
 651         },
 652         [ C(OP_PREFETCH) ] = {
 653                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 654                 [ C(RESULT_ACCESS) ] = 0x01b7,
 655                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 656                 [ C(RESULT_MISS)   ] = 0x01b7,
 657         },
 658  },
 659  [ C(DTLB) ] = {
 660         [ C(OP_READ) ] = {
 661                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI   (alias)  */
 662                 [ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
 663         },
 664         [ C(OP_WRITE) ] = {
 665                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI   (alias)  */
 666                 [ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
 667         },
 668         [ C(OP_PREFETCH) ] = {
 669                 [ C(RESULT_ACCESS) ] = 0x0,
 670                 [ C(RESULT_MISS)   ] = 0x0,
 671         },
 672  },
 673  [ C(ITLB) ] = {
 674         [ C(OP_READ) ] = {
 675                 [ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
 676                 [ C(RESULT_MISS)   ] = 0x20c8, /* ITLB_MISS_RETIRED            */
 677         },
 678         [ C(OP_WRITE) ] = {
 679                 [ C(RESULT_ACCESS) ] = -1,
 680                 [ C(RESULT_MISS)   ] = -1,
 681         },
 682         [ C(OP_PREFETCH) ] = {
 683                 [ C(RESULT_ACCESS) ] = -1,
 684                 [ C(RESULT_MISS)   ] = -1,
 685         },
 686  },
 687  [ C(BPU ) ] = {
 688         [ C(OP_READ) ] = {
 689                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
 690                 [ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
 691         },
 692         [ C(OP_WRITE) ] = {
 693                 [ C(RESULT_ACCESS) ] = -1,
 694                 [ C(RESULT_MISS)   ] = -1,
 695         },
 696         [ C(OP_PREFETCH) ] = {
 697                 [ C(RESULT_ACCESS) ] = -1,
 698                 [ C(RESULT_MISS)   ] = -1,
 699         },
 700  },
 701  [ C(NODE) ] = {
 702         [ C(OP_READ) ] = {
 703                 [ C(RESULT_ACCESS) ] = 0x01b7,
 704                 [ C(RESULT_MISS)   ] = 0x01b7,
 705         },
 706         [ C(OP_WRITE) ] = {
 707                 [ C(RESULT_ACCESS) ] = 0x01b7,
 708                 [ C(RESULT_MISS)   ] = 0x01b7,
 709         },
 710         [ C(OP_PREFETCH) ] = {
 711                 [ C(RESULT_ACCESS) ] = 0x01b7,
 712                 [ C(RESULT_MISS)   ] = 0x01b7,
 713         },
 714  },
 715 };
 716
 717 static __initconst const u64 core2_hw_cache_event_ids
 718                                 [PERF_COUNT_HW_CACHE_MAX]
 719                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 720                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 721 {
 722  [ C(L1D) ] = {
 723         [ C(OP_READ) ] = {
 724                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI          */
 725                 [ C(RESULT_MISS)   ] = 0x0140, /* L1D_CACHE_LD.I_STATE       */
 726         },
 727         [ C(OP_WRITE) ] = {
 728                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI          */
 729                 [ C(RESULT_MISS)   ] = 0x0141, /* L1D_CACHE_ST.I_STATE       */
 730         },
 731         [ C(OP_PREFETCH) ] = {
 732                 [ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS      */
 733                 [ C(RESULT_MISS)   ] = 0,
 734         },
 735  },
 736  [ C(L1I ) ] = {
 737         [ C(OP_READ) ] = {
 738                 [ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS                  */
 739                 [ C(RESULT_MISS)   ] = 0x0081, /* L1I.MISSES                 */
 740         },
 741         [ C(OP_WRITE) ] = {
 742                 [ C(RESULT_ACCESS) ] = -1,
 743                 [ C(RESULT_MISS)   ] = -1,
 744         },
 745         [ C(OP_PREFETCH) ] = {
 746                 [ C(RESULT_ACCESS) ] = 0,
 747                 [ C(RESULT_MISS)   ] = 0,
 748         },
 749  },
 750  [ C(LL  ) ] = {
 751         [ C(OP_READ) ] = {
 752                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
 753                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
 754         },
 755         [ C(OP_WRITE) ] = {
 756                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
 757                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
 758         },
 759         [ C(OP_PREFETCH) ] = {
 760                 [ C(RESULT_ACCESS) ] = 0,
 761                 [ C(RESULT_MISS)   ] = 0,
 762         },
 763  },
 764  [ C(DTLB) ] = {
 765         [ C(OP_READ) ] = {
 766                 [ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI  (alias) */
 767                 [ C(RESULT_MISS)   ] = 0x0208, /* DTLB_MISSES.MISS_LD        */
 768         },
 769         [ C(OP_WRITE) ] = {
 770                 [ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI  (alias) */
 771                 [ C(RESULT_MISS)   ] = 0x0808, /* DTLB_MISSES.MISS_ST        */
 772         },
 773         [ C(OP_PREFETCH) ] = {
 774                 [ C(RESULT_ACCESS) ] = 0,
 775                 [ C(RESULT_MISS)   ] = 0,
 776         },
 777  },
 778  [ C(ITLB) ] = {
 779         [ C(OP_READ) ] = {
 780                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
 781                 [ C(RESULT_MISS)   ] = 0x1282, /* ITLBMISSES                 */
 782         },
 783         [ C(OP_WRITE) ] = {
 784                 [ C(RESULT_ACCESS) ] = -1,
 785                 [ C(RESULT_MISS)   ] = -1,
 786         },
 787         [ C(OP_PREFETCH) ] = {
 788                 [ C(RESULT_ACCESS) ] = -1,
 789                 [ C(RESULT_MISS)   ] = -1,
 790         },
 791  },
 792  [ C(BPU ) ] = {
 793         [ C(OP_READ) ] = {
 794                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
 795                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
 796         },
 797         [ C(OP_WRITE) ] = {
 798                 [ C(RESULT_ACCESS) ] = -1,
 799                 [ C(RESULT_MISS)   ] = -1,
 800         },
 801         [ C(OP_PREFETCH) ] = {
 802                 [ C(RESULT_ACCESS) ] = -1,
 803                 [ C(RESULT_MISS)   ] = -1,
 804         },
 805  },
 806 };
 807
 808 static __initconst const u64 atom_hw_cache_event_ids
 809                                 [PERF_COUNT_HW_CACHE_MAX]
 810                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 811                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 812 {
 813  [ C(L1D) ] = {
 814         [ C(OP_READ) ] = {
 815                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD               */
 816                 [ C(RESULT_MISS)   ] = 0,
 817         },
 818         [ C(OP_WRITE) ] = {
 819                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST               */
 820                 [ C(RESULT_MISS)   ] = 0,
 821         },
 822         [ C(OP_PREFETCH) ] = {
 823                 [ C(RESULT_ACCESS) ] = 0x0,
 824                 [ C(RESULT_MISS)   ] = 0,
 825         },
 826  },
 827  [ C(L1I ) ] = {
 828         [ C(OP_READ) ] = {
 829                 [ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                  */
 830                 [ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                 */
 831         },
 832         [ C(OP_WRITE) ] = {
 833                 [ C(RESULT_ACCESS) ] = -1,
 834                 [ C(RESULT_MISS)   ] = -1,
 835         },
 836         [ C(OP_PREFETCH) ] = {
 837                 [ C(RESULT_ACCESS) ] = 0,
 838                 [ C(RESULT_MISS)   ] = 0,
 839         },
 840  },
 841  [ C(LL  ) ] = {
 842         [ C(OP_READ) ] = {
 843                 [ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
 844                 [ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
 845         },
 846         [ C(OP_WRITE) ] = {
 847                 [ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
 848                 [ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
 849         },
 850         [ C(OP_PREFETCH) ] = {
 851                 [ C(RESULT_ACCESS) ] = 0,
 852                 [ C(RESULT_MISS)   ] = 0,
 853         },
 854  },
 855  [ C(DTLB) ] = {
 856         [ C(OP_READ) ] = {
 857                 [ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI  (alias) */
 858                 [ C(RESULT_MISS)   ] = 0x0508, /* DTLB_MISSES.MISS_LD        */
 859         },
 860         [ C(OP_WRITE) ] = {
 861                 [ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI  (alias) */
 862                 [ C(RESULT_MISS)   ] = 0x0608, /* DTLB_MISSES.MISS_ST        */
 863         },
 864         [ C(OP_PREFETCH) ] = {
 865                 [ C(RESULT_ACCESS) ] = 0,
 866                 [ C(RESULT_MISS)   ] = 0,
 867         },
 868  },
 869  [ C(ITLB) ] = {
 870         [ C(OP_READ) ] = {
 871                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
 872                 [ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES                */
 873         },
 874         [ C(OP_WRITE) ] = {
 875                 [ C(RESULT_ACCESS) ] = -1,
 876                 [ C(RESULT_MISS)   ] = -1,
 877         },
 878         [ C(OP_PREFETCH) ] = {
 879                 [ C(RESULT_ACCESS) ] = -1,
 880                 [ C(RESULT_MISS)   ] = -1,
 881         },
 882  },
 883  [ C(BPU ) ] = {
 884         [ C(OP_READ) ] = {
 885                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
 886                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
 887         },
 888         [ C(OP_WRITE) ] = {
 889                 [ C(RESULT_ACCESS) ] = -1,
 890                 [ C(RESULT_MISS)   ] = -1,
 891         },
 892         [ C(OP_PREFETCH) ] = {
 893                 [ C(RESULT_ACCESS) ] = -1,
 894                 [ C(RESULT_MISS)   ] = -1,
 895         },
 896  },
 897 };
 898
 899 static struct extra_reg intel_slm_extra_regs[] __read_mostly =
 900 {
 901         /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
 902         INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffff, RSP_0),
 903         INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x768005ffff, RSP_1),
 904         EVENT_EXTRA_END
 905 };
 906
 907 #define SLM_DMND_READ           SNB_DMND_DATA_RD
 908 #define SLM_DMND_WRITE          SNB_DMND_RFO
 909 #define SLM_DMND_PREFETCH       (SNB_PF_DATA_RD|SNB_PF_RFO)
 910
 911 #define SLM_SNP_ANY             (SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
 912 #define SLM_LLC_ACCESS          SNB_RESP_ANY
 913 #define SLM_LLC_MISS            (SLM_SNP_ANY|SNB_NON_DRAM)
 914
 915 static __initconst const u64 slm_hw_cache_extra_regs
 916                                 [PERF_COUNT_HW_CACHE_MAX]
 917                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 918                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 919 {
 920  [ C(LL  ) ] = {
 921         [ C(OP_READ) ] = {
 922                 [ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
 923                 [ C(RESULT_MISS)   ] = SLM_DMND_READ|SLM_LLC_MISS,
 924         },
 925         [ C(OP_WRITE) ] = {
 926                 [ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
 927                 [ C(RESULT_MISS)   ] = SLM_DMND_WRITE|SLM_LLC_MISS,
 928         },
 929         [ C(OP_PREFETCH) ] = {
 930                 [ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
 931                 [ C(RESULT_MISS)   ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
 932         },
 933  },
 934 };
 935
 936 static __initconst const u64 slm_hw_cache_event_ids
 937                                 [PERF_COUNT_HW_CACHE_MAX]
 938                                 [PERF_COUNT_HW_CACHE_OP_MAX]
 939                                 [PERF_COUNT_HW_CACHE_RESULT_MAX] =
 940 {
 941  [ C(L1D) ] = {
 942         [ C(OP_READ) ] = {
 943                 [ C(RESULT_ACCESS) ] = 0,
 944                 [ C(RESULT_MISS)   ] = 0x0104, /* LD_DCU_MISS */
 945         },
 946         [ C(OP_WRITE) ] = {
 947                 [ C(RESULT_ACCESS) ] = 0,
 948                 [ C(RESULT_MISS)   ] = 0,
 949         },
 950         [ C(OP_PREFETCH) ] = {
 951                 [ C(RESULT_ACCESS) ] = 0,
 952                 [ C(RESULT_MISS)   ] = 0,
 953         },
 954  },
 955  [ C(L1I ) ] = {
 956         [ C(OP_READ) ] = {
 957                 [ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
 958                 [ C(RESULT_MISS)   ] = 0x0280, /* ICACGE.MISSES */
 959         },
 960         [ C(OP_WRITE) ] = {
 961                 [ C(RESULT_ACCESS) ] = -1,
 962                 [ C(RESULT_MISS)   ] = -1,
 963         },
 964         [ C(OP_PREFETCH) ] = {
 965                 [ C(RESULT_ACCESS) ] = 0,
 966                 [ C(RESULT_MISS)   ] = 0,
 967         },
 968  },
 969  [ C(LL  ) ] = {
 970         [ C(OP_READ) ] = {
 971                 /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
 972                 [ C(RESULT_ACCESS) ] = 0x01b7,
 973                 /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
 974                 [ C(RESULT_MISS)   ] = 0x01b7,
 975         },
 976         [ C(OP_WRITE) ] = {
 977                 /* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
 978                 [ C(RESULT_ACCESS) ] = 0x01b7,
 979                 /* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
 980                 [ C(RESULT_MISS)   ] = 0x01b7,
 981         },
 982         [ C(OP_PREFETCH) ] = {
 983                 /* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
 984                 [ C(RESULT_ACCESS) ] = 0x01b7,
 985                 /* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
 986                 [ C(RESULT_MISS)   ] = 0x01b7,
 987         },
 988  },
 989  [ C(DTLB) ] = {
 990         [ C(OP_READ) ] = {
 991                 [ C(RESULT_ACCESS) ] = 0,
 992                 [ C(RESULT_MISS)   ] = 0x0804, /* LD_DTLB_MISS */
 993         },
 994         [ C(OP_WRITE) ] = {
 995                 [ C(RESULT_ACCESS) ] = 0,
 996                 [ C(RESULT_MISS)   ] = 0,
 997         },
 998         [ C(OP_PREFETCH) ] = {
 999                 [ C(RESULT_ACCESS) ] = 0,
1000                 [ C(RESULT_MISS)   ] = 0,
1001         },
1002  },
1003  [ C(ITLB) ] = {
1004         [ C(OP_READ) ] = {
1005                 [ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1006                 [ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES */
1007         },
1008         [ C(OP_WRITE) ] = {
1009                 [ C(RESULT_ACCESS) ] = -1,
1010                 [ C(RESULT_MISS)   ] = -1,
1011         },
1012         [ C(OP_PREFETCH) ] = {
1013                 [ C(RESULT_ACCESS) ] = -1,
1014                 [ C(RESULT_MISS)   ] = -1,
1015         },
1016  },
1017  [ C(BPU ) ] = {
1018         [ C(OP_READ) ] = {
1019                 [ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
1020                 [ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
1021         },
1022         [ C(OP_WRITE) ] = {
1023                 [ C(RESULT_ACCESS) ] = -1,
1024                 [ C(RESULT_MISS)   ] = -1,
1025         },
1026         [ C(OP_PREFETCH) ] = {
1027                 [ C(RESULT_ACCESS) ] = -1,
1028                 [ C(RESULT_MISS)   ] = -1,
1029         },
1030  },
1031 };
1032
1033 static inline bool intel_pmu_needs_lbr_smpl(struct perf_event *event)
1034 {
1035         /* user explicitly requested branch sampling */
1036         if (has_branch_stack(event))
1037                 return true;
1038
1039         /* implicit branch sampling to correct PEBS skid */
1040         if (x86_pmu.intel_cap.pebs_trap && event->attr.precise_ip > 1 &&
1041             x86_pmu.intel_cap.pebs_format < 2)
1042                 return true;
1043
1044         return false;
1045 }
1046
1047 static void intel_pmu_disable_all(void)
1048 {
1049         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1050
1051         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
1052
1053         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
1054                 intel_pmu_disable_bts();
1055
1056         intel_pmu_pebs_disable_all();
1057         intel_pmu_lbr_disable_all();
1058 }
1059
1060 static void intel_pmu_enable_all(int added)
1061 {
1062         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1063
1064         intel_pmu_pebs_enable_all();
1065         intel_pmu_lbr_enable_all();
1066         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
1067                         x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
1068
1069         if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
1070                 struct perf_event *event =
1071                         cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
1072
1073                 if (WARN_ON_ONCE(!event))
1074                         return;
1075
1076                 intel_pmu_enable_bts(event->hw.config);
1077         }
1078 }
1079
1080 /*
1081  * Workaround for:
1082  *   Intel Errata AAK100 (model 26)
1083  *   Intel Errata AAP53  (model 30)
1084  *   Intel Errata BD53   (model 44)
1085  *
1086  * The official story:
1087  *   These chips need to be 'reset' when adding counters by programming the
1088  *   magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
1089  *   in sequence on the same PMC or on different PMCs.
1090  *
1091  * In practise it appears some of these events do in fact count, and
1092  * we need to programm all 4 events.
1093  */
1094 static void intel_pmu_nhm_workaround(void)
1095 {
1096         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1097         static const unsigned long nhm_magic[4] = {
1098                 0x4300B5,
1099                 0x4300D2,
1100                 0x4300B1,
1101                 0x4300B1
1102         };
1103         struct perf_event *event;
1104         int i;
1105
1106         /*
1107          * The Errata requires below steps:
1108          * 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
1109          * 2) Configure 4 PERFEVTSELx with the magic events and clear
1110          *    the corresponding PMCx;
1111          * 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
1112          * 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
1113          * 5) Clear 4 pairs of ERFEVTSELx and PMCx;
1114          */
1115
1116         /*
1117          * The real steps we choose are a little different from above.
1118          * A) To reduce MSR operations, we don't run step 1) as they
1119          *    are already cleared before this function is called;
1120          * B) Call x86_perf_event_update to save PMCx before configuring
1121          *    PERFEVTSELx with magic number;
1122          * C) With step 5), we do clear only when the PERFEVTSELx is
1123          *    not used currently.
1124          * D) Call x86_perf_event_set_period to restore PMCx;
1125          */
1126
1127         /* We always operate 4 pairs of PERF Counters */
1128         for (i = 0; i < 4; i++) {
1129                 event = cpuc->events[i];
1130                 if (event)
1131                         x86_perf_event_update(event);
1132         }
1133
1134         for (i = 0; i < 4; i++) {
1135                 wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
1136                 wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
1137         }
1138
1139         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
1140         wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
1141
1142         for (i = 0; i < 4; i++) {
1143                 event = cpuc->events[i];
1144
1145                 if (event) {
1146                         x86_perf_event_set_period(event);
1147                         __x86_pmu_enable_event(&event->hw,
1148                                         ARCH_PERFMON_EVENTSEL_ENABLE);
1149                 } else
1150                         wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
1151         }
1152 }
1153
1154 static void intel_pmu_nhm_enable_all(int added)
1155 {
1156         if (added)
1157                 intel_pmu_nhm_workaround();
1158         intel_pmu_enable_all(added);
1159 }
1160
1161 static inline u64 intel_pmu_get_status(void)
1162 {
1163         u64 status;
1164
1165         rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);
1166
1167         return status;
1168 }
1169
1170 static inline void intel_pmu_ack_status(u64 ack)
1171 {
1172         wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
1173 }
1174
1175 static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
1176 {
1177         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1178         u64 ctrl_val, mask;
1179
1180         mask = 0xfULL << (idx * 4);
1181
1182         rdmsrl(hwc->config_base, ctrl_val);
1183         ctrl_val &= ~mask;
1184         wrmsrl(hwc->config_base, ctrl_val);
1185 }
1186
1187 static void intel_pmu_disable_event(struct perf_event *event)
1188 {
1189         struct hw_perf_event *hwc = &event->hw;
1190         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1191
1192         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1193                 intel_pmu_disable_bts();
1194                 intel_pmu_drain_bts_buffer();
1195                 return;
1196         }
1197
1198         cpuc->intel_ctrl_guest_mask &= ~(1ull << hwc->idx);
1199         cpuc->intel_ctrl_host_mask &= ~(1ull << hwc->idx);
1200
1201         /*
1202          * must disable before any actual event
1203          * because any event may be combined with LBR
1204          */
1205         if (intel_pmu_needs_lbr_smpl(event))
1206                 intel_pmu_lbr_disable(event);
1207
1208         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1209                 intel_pmu_disable_fixed(hwc);
1210                 return;
1211         }
1212
1213         x86_pmu_disable_event(event);
1214
1215         if (unlikely(event->attr.precise_ip))
1216                 intel_pmu_pebs_disable(event);
1217 }
1218
1219 static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
1220 {
1221         int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1222         u64 ctrl_val, bits, mask;
1223
1224         /*
1225          * Enable IRQ generation (0x8),
1226          * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
1227          * if requested:
1228          */
1229         bits = 0x8ULL;
1230         if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
1231                 bits |= 0x2;
1232         if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
1233                 bits |= 0x1;
1234
1235         /*
1236          * ANY bit is supported in v3 and up
1237          */
1238         if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
1239                 bits |= 0x4;
1240
1241         bits <<= (idx * 4);
1242         mask = 0xfULL << (idx * 4);
1243
1244         rdmsrl(hwc->config_base, ctrl_val);
1245         ctrl_val &= ~mask;
1246         ctrl_val |= bits;
1247         wrmsrl(hwc->config_base, ctrl_val);
1248 }
1249
1250 static void intel_pmu_enable_event(struct perf_event *event)
1251 {
1252         struct hw_perf_event *hwc = &event->hw;
1253         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1254
1255         if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1256                 if (!__this_cpu_read(cpu_hw_events.enabled))
1257                         return;
1258
1259                 intel_pmu_enable_bts(hwc->config);
1260                 return;
1261         }
1262         /*
1263          * must enabled before any actual event
1264          * because any event may be combined with LBR
1265          */
1266         if (intel_pmu_needs_lbr_smpl(event))
1267                 intel_pmu_lbr_enable(event);
1268
1269         if (event->attr.exclude_host)
1270                 cpuc->intel_ctrl_guest_mask |= (1ull << hwc->idx);
1271         if (event->attr.exclude_guest)
1272                 cpuc->intel_ctrl_host_mask |= (1ull << hwc->idx);
1273
1274         if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1275                 intel_pmu_enable_fixed(hwc);
1276                 return;
1277         }
1278
1279         if (unlikely(event->attr.precise_ip))
1280                 intel_pmu_pebs_enable(event);
1281
1282         __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1283 }
1284
1285 /*
1286  * Save and restart an expired event. Called by NMI contexts,
1287  * so it has to be careful about preempting normal event ops:
1288  */
1289 int intel_pmu_save_and_restart(struct perf_event *event)
1290 {
1291         x86_perf_event_update(event);
1292         return x86_perf_event_set_period(event);
1293 }
1294
1295 static void intel_pmu_reset(void)
1296 {
1297         struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
1298         unsigned long flags;
1299         int idx;
1300
1301         if (!x86_pmu.num_counters)
1302                 return;
1303
1304         local_irq_save(flags);
1305
1306         pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
1307
1308         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1309                 wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
1310                 wrmsrl_safe(x86_pmu_event_addr(idx),  0ull);
1311         }
1312         for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
1313                 wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
1314
1315         if (ds)
1316                 ds->bts_index = ds->bts_buffer_base;
1317
1318         local_irq_restore(flags);
1319 }
1320
1321 /*
1322  * This handler is triggered by the local APIC, so the APIC IRQ handling
1323  * rules apply:
1324  */
1325 static int intel_pmu_handle_irq(struct pt_regs *regs)
1326 {
1327         struct perf_sample_data data;
1328         struct cpu_hw_events *cpuc;
1329         int bit, loops;
1330         u64 status;
1331         int handled;
1332
1333         cpuc = &__get_cpu_var(cpu_hw_events);
1334
1335         /*
1336          * No known reason to not always do late ACK,
1337          * but just in case do it opt-in.
1338          */
1339         if (!x86_pmu.late_ack)
1340                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1341         intel_pmu_disable_all();
1342         handled = intel_pmu_drain_bts_buffer();
1343         status = intel_pmu_get_status();
1344         if (!status) {
1345                 intel_pmu_enable_all(0);
1346                 return handled;
1347         }
1348
1349         loops = 0;
1350 again:
1351         intel_pmu_ack_status(status);
1352         if (++loops > 100) {
1353                 static bool warned = false;
1354                 if (!warned) {
1355                         WARN(1, "perfevents: irq loop stuck!\n");
1356                         perf_event_print_debug();
1357                         warned = true;
1358                 }
1359                 intel_pmu_reset();
1360                 goto done;
1361         }
1362
1363         inc_irq_stat(apic_perf_irqs);
1364
1365         intel_pmu_lbr_read();
1366
1367         /*
1368          * PEBS overflow sets bit 62 in the global status register
1369          */
1370         if (__test_and_clear_bit(62, (unsigned long *)&status)) {
1371                 handled++;
1372                 x86_pmu.drain_pebs(regs);
1373         }
1374
1375         for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
1376                 struct perf_event *event = cpuc->events[bit];
1377
1378                 handled++;
1379
1380                 if (!test_bit(bit, cpuc->active_mask))
1381                         continue;
1382
1383                 if (!intel_pmu_save_and_restart(event))
1384                         continue;
1385
1386                 perf_sample_data_init(&data, 0, event->hw.last_period);
1387
1388                 if (has_branch_stack(event))
1389                         data.br_stack = &cpuc->lbr_stack;
1390
1391                 if (perf_event_overflow(event, &data, regs))
1392                         x86_pmu_stop(event, 0);
1393         }
1394
1395         /*
1396          * Repeat if there is more work to be done:
1397          */
1398         status = intel_pmu_get_status();
1399         if (status)
1400                 goto again;
1401
1402 done:
1403         intel_pmu_enable_all(0);
1404         /*
1405          * Only unmask the NMI after the overflow counters
1406          * have been reset. This avoids spurious NMIs on
1407          * Haswell CPUs.
1408          */
1409         if (x86_pmu.late_ack)
1410                 apic_write(APIC_LVTPC, APIC_DM_NMI);
1411         return handled;
1412 }
1413
1414 static struct event_constraint *
1415 intel_bts_constraints(struct perf_event *event)
1416 {
1417         struct hw_perf_event *hwc = &event->hw;
1418         unsigned int hw_event, bts_event;
1419
1420         if (event->attr.freq)
1421                 return NULL;
1422
1423         hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
1424         bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1425
1426         if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
1427                 return &bts_constraint;
1428
1429         return NULL;
1430 }
1431
1432 static int intel_alt_er(int idx)
1433 {
1434         if (!(x86_pmu.er_flags & ERF_HAS_RSP_1))
1435                 return idx;
1436
1437         if (idx == EXTRA_REG_RSP_0)
1438                 return EXTRA_REG_RSP_1;
1439
1440         if (idx == EXTRA_REG_RSP_1)
1441                 return EXTRA_REG_RSP_0;
1442
1443         return idx;
1444 }
1445
1446 static void intel_fixup_er(struct perf_event *event, int idx)
1447 {
1448         event->hw.extra_reg.idx = idx;
1449
1450         if (idx == EXTRA_REG_RSP_0) {
1451                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1452                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
1453                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
1454         } else if (idx == EXTRA_REG_RSP_1) {
1455                 event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1456                 event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
1457                 event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
1458         }
1459 }
1460
1461 /*
1462  * manage allocation of shared extra msr for certain events
1463  *
1464  * sharing can be:
1465  * per-cpu: to be shared between the various events on a single PMU
1466  * per-core: per-cpu + shared by HT threads
1467  */
1468 static struct event_constraint *
1469 __intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
1470                                    struct perf_event *event,
1471                                    struct hw_perf_event_extra *reg)
1472 {
1473         struct event_constraint *c = &emptyconstraint;
1474         struct er_account *era;
1475         unsigned long flags;
1476         int idx = reg->idx;
1477
1478         /*
1479          * reg->alloc can be set due to existing state, so for fake cpuc we
1480          * need to ignore this, otherwise we might fail to allocate proper fake
1481          * state for this extra reg constraint. Also see the comment below.
1482          */
1483         if (reg->alloc && !cpuc->is_fake)
1484                 return NULL; /* call x86_get_event_constraint() */
1485
1486 again:
1487         era = &cpuc->shared_regs->regs[idx];
1488         /*
1489          * we use spin_lock_irqsave() to avoid lockdep issues when
1490          * passing a fake cpuc
1491          */
1492         raw_spin_lock_irqsave(&era->lock, flags);
1493
1494         if (!atomic_read(&era->ref) || era->config == reg->config) {
1495
1496                 /*
1497                  * If its a fake cpuc -- as per validate_{group,event}() we
1498                  * shouldn't touch event state and we can avoid doing so
1499                  * since both will only call get_event_constraints() once
1500                  * on each event, this avoids the need for reg->alloc.
1501                  *
1502                  * Not doing the ER fixup will only result in era->reg being
1503                  * wrong, but since we won't actually try and program hardware
1504                  * this isn't a problem either.
1505                  */
1506                 if (!cpuc->is_fake) {
1507                         if (idx != reg->idx)
1508                                 intel_fixup_er(event, idx);
1509
1510                         /*
1511                          * x86_schedule_events() can call get_event_constraints()
1512                          * multiple times on events in the case of incremental
1513                          * scheduling(). reg->alloc ensures we only do the ER
1514                          * allocation once.
1515                          */
1516                         reg->alloc = 1;
1517                 }
1518
1519                 /* lock in msr value */
1520                 era->config = reg->config;
1521                 era->reg = reg->reg;
1522
1523                 /* one more user */
1524                 atomic_inc(&era->ref);
1525
1526                 /*
1527                  * need to call x86_get_event_constraint()
1528                  * to check if associated event has constraints
1529                  */
1530                 c = NULL;
1531         } else {
1532                 idx = intel_alt_er(idx);
1533                 if (idx != reg->idx) {
1534                         raw_spin_unlock_irqrestore(&era->lock, flags);
1535                         goto again;
1536                 }
1537         }
1538         raw_spin_unlock_irqrestore(&era->lock, flags);
1539
1540         return c;
1541 }
1542
1543 static void
1544 __intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
1545                                    struct hw_perf_event_extra *reg)
1546 {
1547         struct er_account *era;
1548
1549         /*
1550          * Only put constraint if extra reg was actually allocated. Also takes
1551          * care of event which do not use an extra shared reg.
1552          *
1553          * Also, if this is a fake cpuc we shouldn't touch any event state
1554          * (reg->alloc) and we don't care about leaving inconsistent cpuc state
1555          * either since it'll be thrown out.
1556          */
1557         if (!reg->alloc || cpuc->is_fake)
1558                 return;
1559
1560         era = &cpuc->shared_regs->regs[reg->idx];
1561
1562         /* one fewer user */
1563         atomic_dec(&era->ref);
1564
1565         /* allocate again next time */
1566         reg->alloc = 0;
1567 }
1568
1569 static struct event_constraint *
1570 intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
1571                               struct perf_event *event)
1572 {
1573         struct event_constraint *c = NULL, *d;
1574         struct hw_perf_event_extra *xreg, *breg;
1575
1576         xreg = &event->hw.extra_reg;
1577         if (xreg->idx != EXTRA_REG_NONE) {
1578                 c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
1579                 if (c == &emptyconstraint)
1580                         return c;
1581         }
1582         breg = &event->hw.branch_reg;
1583         if (breg->idx != EXTRA_REG_NONE) {
1584                 d = __intel_shared_reg_get_constraints(cpuc, event, breg);
1585                 if (d == &emptyconstraint) {
1586                         __intel_shared_reg_put_constraints(cpuc, xreg);
1587                         c = d;
1588                 }
1589         }
1590         return c;
1591 }
1592
1593 struct event_constraint *
1594 x86_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
1595 {
1596         struct event_constraint *c;
1597
1598         if (x86_pmu.event_constraints) {
1599                 for_each_event_constraint(c, x86_pmu.event_constraints) {
1600                         if ((event->hw.config & c->cmask) == c->code) {
1601                                 event->hw.flags |= c->flags;
1602                                 return c;
1603                         }
1604                 }
1605         }
1606
1607         return &unconstrained;
1608 }
1609
1610 static struct event_constraint *
1611 intel_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
1612 {
1613         struct event_constraint *c;
1614
1615         c = intel_bts_constraints(event);
1616         if (c)
1617                 return c;
1618
1619         c = intel_pebs_constraints(event);
1620         if (c)
1621                 return c;
1622
1623         c = intel_shared_regs_constraints(cpuc, event);
1624         if (c)
1625                 return c;
1626
1627         return x86_get_event_constraints(cpuc, event);
1628 }
1629
1630 static void
1631 intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
1632                                         struct perf_event *event)
1633 {
1634         struct hw_perf_event_extra *reg;
1635
1636         reg = &event->hw.extra_reg;
1637         if (reg->idx != EXTRA_REG_NONE)
1638                 __intel_shared_reg_put_constraints(cpuc, reg);
1639
1640         reg = &event->hw.branch_reg;
1641         if (reg->idx != EXTRA_REG_NONE)
1642                 __intel_shared_reg_put_constraints(cpuc, reg);
1643 }
1644
1645 static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
1646                                         struct perf_event *event)
1647 {
1648         intel_put_shared_regs_event_constraints(cpuc, event);
1649 }
1650
1651 static void intel_pebs_aliases_core2(struct perf_event *event)
1652 {
1653         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
1654                 /*
1655                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
1656                  * (0x003c) so that we can use it with PEBS.
1657                  *
1658                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
1659                  * PEBS capable. However we can use INST_RETIRED.ANY_P
1660                  * (0x00c0), which is a PEBS capable event, to get the same
1661                  * count.
1662                  *
1663                  * INST_RETIRED.ANY_P counts the number of cycles that retires
1664                  * CNTMASK instructions. By setting CNTMASK to a value (16)
1665                  * larger than the maximum number of instructions that can be
1666                  * retired per cycle (4) and then inverting the condition, we
1667                  * count all cycles that retire 16 or less instructions, which
1668                  * is every cycle.
1669                  *
1670                  * Thereby we gain a PEBS capable cycle counter.
1671                  */
1672                 u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);
1673
1674                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
1675                 event->hw.config = alt_config;
1676         }
1677 }
1678
1679 static void intel_pebs_aliases_snb(struct perf_event *event)
1680 {
1681         if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
1682                 /*
1683                  * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
1684                  * (0x003c) so that we can use it with PEBS.
1685                  *
1686                  * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
1687                  * PEBS capable. However we can use UOPS_RETIRED.ALL
1688                  * (0x01c2), which is a PEBS capable event, to get the same
1689                  * count.
1690                  *
1691                  * UOPS_RETIRED.ALL counts the number of cycles that retires
1692                  * CNTMASK micro-ops. By setting CNTMASK to a value (16)
1693                  * larger than the maximum number of micro-ops that can be
1694                  * retired per cycle (4) and then inverting the condition, we
1695                  * count all cycles that retire 16 or less micro-ops, which
1696                  * is every cycle.
1697                  *
1698                  * Thereby we gain a PEBS capable cycle counter.
1699                  */
1700                 u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
1701
1702                 alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
1703                 event->hw.config = alt_config;
1704         }
1705 }
1706
1707 static int intel_pmu_hw_config(struct perf_event *event)
1708 {
1709         int ret = x86_pmu_hw_config(event);
1710
1711         if (ret)
1712                 return ret;
1713
1714         if (event->attr.precise_ip && x86_pmu.pebs_aliases)
1715                 x86_pmu.pebs_aliases(event);
1716
1717         if (intel_pmu_needs_lbr_smpl(event)) {
1718                 ret = intel_pmu_setup_lbr_filter(event);
1719                 if (ret)
1720                         return ret;
1721         }
1722
1723         if (event->attr.type != PERF_TYPE_RAW)
1724                 return 0;
1725
1726         if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
1727                 return 0;
1728
1729         if (x86_pmu.version < 3)
1730                 return -EINVAL;
1731
1732         if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
1733                 return -EACCES;
1734
1735         event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;
1736
1737         return 0;
1738 }
1739
1740 struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
1741 {
1742         if (x86_pmu.guest_get_msrs)
1743                 return x86_pmu.guest_get_msrs(nr);
1744         *nr = 0;
1745         return NULL;
1746 }
1747 EXPORT_SYMBOL_GPL(perf_guest_get_msrs);
1748
1749 static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr)
1750 {
1751         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1752         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
1753
1754         arr[0].msr = MSR_CORE_PERF_GLOBAL_CTRL;
1755         arr[0].host = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask;
1756         arr[0].guest = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_host_mask;
1757         /*
1758          * If PMU counter has PEBS enabled it is not enough to disable counter
1759          * on a guest entry since PEBS memory write can overshoot guest entry
1760          * and corrupt guest memory. Disabling PEBS solves the problem.
1761          */
1762         arr[1].msr = MSR_IA32_PEBS_ENABLE;
1763         arr[1].host = cpuc->pebs_enabled;
1764         arr[1].guest = 0;
1765
1766         *nr = 2;
1767         return arr;
1768 }
1769
1770 static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
1771 {
1772         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1773         struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
1774         int idx;
1775
1776         for (idx = 0; idx < x86_pmu.num_counters; idx++)  {
1777                 struct perf_event *event = cpuc->events[idx];
1778
1779                 arr[idx].msr = x86_pmu_config_addr(idx);
1780                 arr[idx].host = arr[idx].guest = 0;
1781
1782                 if (!test_bit(idx, cpuc->active_mask))
1783                         continue;
1784
1785                 arr[idx].host = arr[idx].guest =
1786                         event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;
1787
1788                 if (event->attr.exclude_host)
1789                         arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
1790                 else if (event->attr.exclude_guest)
1791                         arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
1792         }
1793
1794         *nr = x86_pmu.num_counters;
1795         return arr;
1796 }
1797
1798 static void core_pmu_enable_event(struct perf_event *event)
1799 {
1800         if (!event->attr.exclude_host)
1801                 x86_pmu_enable_event(event);
1802 }
1803
1804 static void core_pmu_enable_all(int added)
1805 {
1806         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
1807         int idx;
1808
1809         for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1810                 struct hw_perf_event *hwc = &cpuc->events[idx]->hw;
1811
1812                 if (!test_bit(idx, cpuc->active_mask) ||
1813                                 cpuc->events[idx]->attr.exclude_host)
1814                         continue;
1815
1816                 __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1817         }
1818 }
1819
1820 static int hsw_hw_config(struct perf_event *event)
1821 {
1822         int ret = intel_pmu_hw_config(event);
1823
1824         if (ret)
1825                 return ret;
1826         if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
1827                 return 0;
1828         event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);
1829
1830         /*
1831          * IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
1832          * PEBS or in ANY thread mode. Since the results are non-sensical forbid
1833          * this combination.
1834          */
1835         if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
1836              ((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
1837               event->attr.precise_ip > 0))
1838                 return -EOPNOTSUPP;
1839
1840         return 0;
1841 }
1842
1843 static struct event_constraint counter2_constraint =
1844                         EVENT_CONSTRAINT(0, 0x4, 0);
1845
1846 static struct event_constraint *
1847 hsw_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
1848 {
1849         struct event_constraint *c = intel_get_event_constraints(cpuc, event);
1850
1851         /* Handle special quirk on in_tx_checkpointed only in counter 2 */
1852         if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
1853                 if (c->idxmsk64 & (1U << 2))
1854                         return &counter2_constraint;
1855                 return &emptyconstraint;
1856         }
1857
1858         return c;
1859 }
1860
1861 PMU_FORMAT_ATTR(event,  "config:0-7"    );
1862 PMU_FORMAT_ATTR(umask,  "config:8-15"   );
1863 PMU_FORMAT_ATTR(edge,   "config:18"     );
1864 PMU_FORMAT_ATTR(pc,     "config:19"     );
1865 PMU_FORMAT_ATTR(any,    "config:21"     ); /* v3 + */
1866 PMU_FORMAT_ATTR(inv,    "config:23"     );
1867 PMU_FORMAT_ATTR(cmask,  "config:24-31"  );
1868 PMU_FORMAT_ATTR(in_tx,  "config:32");
1869 PMU_FORMAT_ATTR(in_tx_cp, "config:33");
1870
1871 static struct attribute *intel_arch_formats_attr[] = {
1872         &format_attr_event.attr,
1873         &format_attr_umask.attr,
1874         &format_attr_edge.attr,
1875         &format_attr_pc.attr,
1876         &format_attr_inv.attr,
1877         &format_attr_cmask.attr,
1878         NULL,
1879 };
1880
1881 ssize_t intel_event_sysfs_show(char *page, u64 config)
1882 {
1883         u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
1884
1885         return x86_event_sysfs_show(page, config, event);
1886 }
1887
1888 static __initconst const struct x86_pmu core_pmu = {
1889         .name                   = "core",
1890         .handle_irq             = x86_pmu_handle_irq,
1891         .disable_all            = x86_pmu_disable_all,
1892         .enable_all             = core_pmu_enable_all,
1893         .enable                 = core_pmu_enable_event,
1894         .disable                = x86_pmu_disable_event,
1895         .hw_config              = x86_pmu_hw_config,
1896         .schedule_events        = x86_schedule_events,
1897         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
1898         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
1899         .event_map              = intel_pmu_event_map,
1900         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
1901         .apic                   = 1,
1902         /*
1903          * Intel PMCs cannot be accessed sanely above 32 bit width,
1904          * so we install an artificial 1<<31 period regardless of
1905          * the generic event period:
1906          */
1907         .max_period             = (1ULL << 31) - 1,
1908         .get_event_constraints  = intel_get_event_constraints,
1909         .put_event_constraints  = intel_put_event_constraints,
1910         .event_constraints      = intel_core_event_constraints,
1911         .guest_get_msrs         = core_guest_get_msrs,
1912         .format_attrs           = intel_arch_formats_attr,
1913         .events_sysfs_show      = intel_event_sysfs_show,
1914 };
1915
1916 struct intel_shared_regs *allocate_shared_regs(int cpu)
1917 {
1918         struct intel_shared_regs *regs;
1919         int i;
1920
1921         regs = kzalloc_node(sizeof(struct intel_shared_regs),
1922                             GFP_KERNEL, cpu_to_node(cpu));
1923         if (regs) {
1924                 /*
1925                  * initialize the locks to keep lockdep happy
1926                  */
1927                 for (i = 0; i < EXTRA_REG_MAX; i++)
1928                         raw_spin_lock_init(&regs->regs[i].lock);
1929
1930                 regs->core_id = -1;
1931         }
1932         return regs;
1933 }
1934
1935 static int intel_pmu_cpu_prepare(int cpu)
1936 {
1937         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
1938
1939         if (!(x86_pmu.extra_regs || x86_pmu.lbr_sel_map))
1940                 return NOTIFY_OK;
1941
1942         cpuc->shared_regs = allocate_shared_regs(cpu);
1943         if (!cpuc->shared_regs)
1944                 return NOTIFY_BAD;
1945
1946         return NOTIFY_OK;
1947 }
1948
1949 static void intel_pmu_cpu_starting(int cpu)
1950 {
1951         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
1952         int core_id = topology_core_id(cpu);
1953         int i;
1954
1955         init_debug_store_on_cpu(cpu);
1956         /*
1957          * Deal with CPUs that don't clear their LBRs on power-up.
1958          */
1959         intel_pmu_lbr_reset();
1960
1961         cpuc->lbr_sel = NULL;
1962
1963         if (!cpuc->shared_regs)
1964                 return;
1965
1966         if (!(x86_pmu.er_flags & ERF_NO_HT_SHARING)) {
1967                 for_each_cpu(i, topology_thread_cpumask(cpu)) {
1968                         struct intel_shared_regs *pc;
1969
1970                         pc = per_cpu(cpu_hw_events, i).shared_regs;
1971                         if (pc && pc->core_id == core_id) {
1972                                 cpuc->kfree_on_online = cpuc->shared_regs;
1973                                 cpuc->shared_regs = pc;
1974                                 break;
1975                         }
1976                 }
1977                 cpuc->shared_regs->core_id = core_id;
1978                 cpuc->shared_regs->refcnt++;
1979         }
1980
1981         if (x86_pmu.lbr_sel_map)
1982                 cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
1983 }
1984
1985 static void intel_pmu_cpu_dying(int cpu)
1986 {
1987         struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
1988         struct intel_shared_regs *pc;
1989
1990         pc = cpuc->shared_regs;
1991         if (pc) {
1992                 if (pc->core_id == -1 || --pc->refcnt == 0)
1993                         kfree(pc);
1994                 cpuc->shared_regs = NULL;
1995         }
1996
1997         fini_debug_store_on_cpu(cpu);
1998 }
1999
2000 static void intel_pmu_flush_branch_stack(void)
2001 {
2002         /*
2003          * Intel LBR does not tag entries with the
2004          * PID of the current task, then we need to
2005          * flush it on ctxsw
2006          * For now, we simply reset it
2007          */
2008         if (x86_pmu.lbr_nr)
2009                 intel_pmu_lbr_reset();
2010 }
2011
2012 PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
2013
2014 PMU_FORMAT_ATTR(ldlat, "config1:0-15");
2015
2016 static struct attribute *intel_arch3_formats_attr[] = {
2017         &format_attr_event.attr,
2018         &format_attr_umask.attr,
2019         &format_attr_edge.attr,
2020         &format_attr_pc.attr,
2021         &format_attr_any.attr,
2022         &format_attr_inv.attr,
2023         &format_attr_cmask.attr,
2024         &format_attr_in_tx.attr,
2025         &format_attr_in_tx_cp.attr,
2026
2027         &format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
2028         &format_attr_ldlat.attr, /* PEBS load latency */
2029         NULL,
2030 };
2031
2032 static __initconst const struct x86_pmu intel_pmu = {
2033         .name                   = "Intel",
2034         .handle_irq             = intel_pmu_handle_irq,
2035         .disable_all            = intel_pmu_disable_all,
2036         .enable_all             = intel_pmu_enable_all,
2037         .enable                 = intel_pmu_enable_event,
2038         .disable                = intel_pmu_disable_event,
2039         .hw_config              = intel_pmu_hw_config,
2040         .schedule_events        = x86_schedule_events,
2041         .eventsel               = MSR_ARCH_PERFMON_EVENTSEL0,
2042         .perfctr                = MSR_ARCH_PERFMON_PERFCTR0,
2043         .event_map              = intel_pmu_event_map,
2044         .max_events             = ARRAY_SIZE(intel_perfmon_event_map),
2045         .apic                   = 1,
2046         /*
2047          * Intel PMCs cannot be accessed sanely above 32 bit width,
2048          * so we install an artificial 1<<31 period regardless of
2049          * the generic event period:
2050          */
2051         .max_period             = (1ULL << 31) - 1,
2052         .get_event_constraints  = intel_get_event_constraints,
2053         .put_event_constraints  = intel_put_event_constraints,
2054         .pebs_aliases           = intel_pebs_aliases_core2,
2055
2056         .format_attrs           = intel_arch3_formats_attr,
2057         .events_sysfs_show      = intel_event_sysfs_show,
2058
2059         .cpu_prepare            = intel_pmu_cpu_prepare,
2060         .cpu_starting           = intel_pmu_cpu_starting,
2061         .cpu_dying              = intel_pmu_cpu_dying,
2062         .guest_get_msrs         = intel_guest_get_msrs,
2063         .flush_branch_stack     = intel_pmu_flush_branch_stack,
2064 };
2065
2066 static __init void intel_clovertown_quirk(void)
2067 {
2068         /*
2069          * PEBS is unreliable due to:
2070          *
2071          *   AJ67  - PEBS may experience CPL leaks
2072          *   AJ68  - PEBS PMI may be delayed by one event
2073          *   AJ69  - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
2074          *   AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
2075          *
2076          * AJ67 could be worked around by restricting the OS/USR flags.
2077          * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
2078          *
2079          * AJ106 could possibly be worked around by not allowing LBR
2080          *       usage from PEBS, including the fixup.
2081          * AJ68  could possibly be worked around by always programming
2082          *       a pebs_event_reset[0] value and coping with the lost events.
2083          *
2084          * But taken together it might just make sense to not enable PEBS on
2085          * these chips.
2086          */
2087         pr_warn("PEBS disabled due to CPU errata\n");
2088         x86_pmu.pebs = 0;
2089         x86_pmu.pebs_constraints = NULL;
2090 }
2091
2092 static int intel_snb_pebs_broken(int cpu)
2093 {
2094         u32 rev = UINT_MAX; /* default to broken for unknown models */
2095
2096         switch (cpu_data(cpu).x86_model) {
2097         case 42: /* SNB */
2098                 rev = 0x28;
2099                 break;
2100
2101         case 45: /* SNB-EP */
2102                 switch (cpu_data(cpu).x86_mask) {
2103                 case 6: rev = 0x618; break;
2104                 case 7: rev = 0x70c; break;
2105                 }
2106         }
2107
2108         return (cpu_data(cpu).microcode < rev);
2109 }
2110
2111 static void intel_snb_check_microcode(void)
2112 {
2113         int pebs_broken = 0;
2114         int cpu;
2115
2116         get_online_cpus();
2117         for_each_online_cpu(cpu) {
2118                 if ((pebs_broken = intel_snb_pebs_broken(cpu)))
2119                         break;
2120         }
2121         put_online_cpus();
2122
2123         if (pebs_broken == x86_pmu.pebs_broken)
2124                 return;
2125
2126         /*
2127          * Serialized by the microcode lock..
2128          */
2129         if (x86_pmu.pebs_broken) {
2130                 pr_info("PEBS enabled due to microcode update\n");
2131                 x86_pmu.pebs_broken = 0;
2132         } else {
2133                 pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
2134                 x86_pmu.pebs_broken = 1;
2135         }
2136 }
2137
2138 static __init void intel_sandybridge_quirk(void)
2139 {
2140         x86_pmu.check_microcode = intel_snb_check_microcode;
2141         intel_snb_check_microcode();
2142 }
2143
2144 static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
2145         { PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
2146         { PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
2147         { PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
2148         { PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
2149         { PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
2150         { PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
2151         { PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
2152 };
2153
2154 static __init void intel_arch_events_quirk(void)
2155 {
2156         int bit;
2157
2158         /* disable event that reported as not presend by cpuid */
2159         for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
2160                 intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
2161                 pr_warn("CPUID marked event: \'%s\' unavailable\n",
2162                         intel_arch_events_map[bit].name);
2163         }
2164 }
2165
2166 static __init void intel_nehalem_quirk(void)
2167 {
2168         union cpuid10_ebx ebx;
2169
2170         ebx.full = x86_pmu.events_maskl;
2171         if (ebx.split.no_branch_misses_retired) {
2172                 /*
2173                  * Erratum AAJ80 detected, we work it around by using
2174                  * the BR_MISP_EXEC.ANY event. This will over-count
2175                  * branch-misses, but it's still much better than the
2176                  * architectural event which is often completely bogus:
2177                  */
2178                 intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
2179                 ebx.split.no_branch_misses_retired = 0;
2180                 x86_pmu.events_maskl = ebx.full;
2181                 pr_info("CPU erratum AAJ80 worked around\n");
2182         }
2183 }
2184
2185 EVENT_ATTR_STR(mem-loads,      mem_ld_hsw,     "event=0xcd,umask=0x1,ldlat=3");
2186 EVENT_ATTR_STR(mem-stores,     mem_st_hsw,     "event=0xd0,umask=0x82")
2187
2188 static struct attribute *hsw_events_attrs[] = {
2189         EVENT_PTR(mem_ld_hsw),
2190         EVENT_PTR(mem_st_hsw),
2191         NULL
2192 };
2193
2194 __init int intel_pmu_init(void)
2195 {
2196         union cpuid10_edx edx;
2197         union cpuid10_eax eax;
2198         union cpuid10_ebx ebx;
2199         struct event_constraint *c;
2200         unsigned int unused;
2201         int version;
2202
2203         if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
2204                 switch (boot_cpu_data.x86) {
2205                 case 0x6:
2206                         return p6_pmu_init();
2207                 case 0xb:
2208                         return knc_pmu_init();
2209                 case 0xf:
2210                         return p4_pmu_init();
2211                 }
2212                 return -ENODEV;
2213         }
2214
2215         /*
2216          * Check whether the Architectural PerfMon supports
2217          * Branch Misses Retired hw_event or not.
2218          */
2219         cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
2220         if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
2221                 return -ENODEV;
2222
2223         version = eax.split.version_id;
2224         if (version < 2)
2225                 x86_pmu = core_pmu;
2226         else
2227                 x86_pmu = intel_pmu;
2228
2229         x86_pmu.version                 = version;
2230         x86_pmu.num_counters            = eax.split.num_counters;
2231         x86_pmu.cntval_bits             = eax.split.bit_width;
2232         x86_pmu.cntval_mask             = (1ULL << eax.split.bit_width) - 1;
2233
2234         x86_pmu.events_maskl            = ebx.full;
2235         x86_pmu.events_mask_len         = eax.split.mask_length;
2236
2237         x86_pmu.max_pebs_events         = min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);
2238
2239         /*
2240          * Quirk: v2 perfmon does not report fixed-purpose events, so
2241          * assume at least 3 events:
2242          */
2243         if (version > 1)
2244                 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
2245
2246         /*
2247          * v2 and above have a perf capabilities MSR
2248          */
2249         if (version > 1) {
2250                 u64 capabilities;
2251
2252                 rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
2253                 x86_pmu.intel_cap.capabilities = capabilities;
2254         }
2255
2256         intel_ds_init();
2257
2258         x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */
2259
2260         /*
2261          * Install the hw-cache-events table:
2262          */
2263         switch (boot_cpu_data.x86_model) {
2264         case 14: /* 65 nm core solo/duo, "Yonah" */
2265                 pr_cont("Core events, ");
2266                 break;
2267
2268         case 15: /* original 65 nm celeron/pentium/core2/xeon, "Merom"/"Conroe" */
2269                 x86_add_quirk(intel_clovertown_quirk);
2270         case 22: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L" */
2271         case 23: /* current 45 nm celeron/core2/xeon "Penryn"/"Wolfdale" */
2272         case 29: /* six-core 45 nm xeon "Dunnington" */
2273                 memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
2274                        sizeof(hw_cache_event_ids));
2275
2276                 intel_pmu_lbr_init_core();
2277
2278                 x86_pmu.event_constraints = intel_core2_event_constraints;
2279                 x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
2280                 pr_cont("Core2 events, ");
2281                 break;
2282
2283         case 26: /* 45 nm nehalem, "Bloomfield" */
2284         case 30: /* 45 nm nehalem, "Lynnfield" */
2285         case 46: /* 45 nm nehalem-ex, "Beckton" */
2286                 memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
2287                        sizeof(hw_cache_event_ids));
2288                 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
2289                        sizeof(hw_cache_extra_regs));
2290
2291                 intel_pmu_lbr_init_nhm();
2292
2293                 x86_pmu.event_constraints = intel_nehalem_event_constraints;
2294                 x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
2295                 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
2296                 x86_pmu.extra_regs = intel_nehalem_extra_regs;
2297
2298                 x86_pmu.cpu_events = nhm_events_attrs;
2299
2300                 /* UOPS_ISSUED.STALLED_CYCLES */
2301                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2302                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2303                 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
2304                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2305                         X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
2306
2307                 x86_add_quirk(intel_nehalem_quirk);
2308
2309                 pr_cont("Nehalem events, ");
2310                 break;
2311
2312         case 28: /* Atom */
2313         case 38: /* Lincroft */
2314         case 39: /* Penwell */
2315         case 53: /* Cloverview */
2316         case 54: /* Cedarview */
2317                 memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
2318                        sizeof(hw_cache_event_ids));
2319
2320                 intel_pmu_lbr_init_atom();
2321
2322                 x86_pmu.event_constraints = intel_gen_event_constraints;
2323                 x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
2324                 pr_cont("Atom events, ");
2325                 break;
2326
2327         case 55: /* Atom 22nm "Silvermont" */
2328                 memcpy(hw_cache_event_ids, slm_hw_cache_event_ids,
2329                         sizeof(hw_cache_event_ids));
2330                 memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs,
2331                        sizeof(hw_cache_extra_regs));
2332
2333                 intel_pmu_lbr_init_atom();
2334
2335                 x86_pmu.event_constraints = intel_slm_event_constraints;
2336                 x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
2337                 x86_pmu.extra_regs = intel_slm_extra_regs;
2338                 x86_pmu.er_flags |= ERF_HAS_RSP_1;
2339                 pr_cont("Silvermont events, ");
2340                 break;
2341
2342         case 37: /* 32 nm nehalem, "Clarkdale" */
2343         case 44: /* 32 nm nehalem, "Gulftown" */
2344         case 47: /* 32 nm Xeon E7 */
2345                 memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
2346                        sizeof(hw_cache_event_ids));
2347                 memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
2348                        sizeof(hw_cache_extra_regs));
2349
2350                 intel_pmu_lbr_init_nhm();
2351
2352                 x86_pmu.event_constraints = intel_westmere_event_constraints;
2353                 x86_pmu.enable_all = intel_pmu_nhm_enable_all;
2354                 x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
2355                 x86_pmu.extra_regs = intel_westmere_extra_regs;
2356                 x86_pmu.er_flags |= ERF_HAS_RSP_1;
2357
2358                 x86_pmu.cpu_events = nhm_events_attrs;
2359
2360                 /* UOPS_ISSUED.STALLED_CYCLES */
2361                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2362                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2363                 /* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
2364                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2365                         X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
2366
2367                 pr_cont("Westmere events, ");
2368                 break;
2369
2370         case 42: /* SandyBridge */
2371         case 45: /* SandyBridge, "Romely-EP" */
2372                 x86_add_quirk(intel_sandybridge_quirk);
2373                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
2374                        sizeof(hw_cache_event_ids));
2375                 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
2376                        sizeof(hw_cache_extra_regs));
2377
2378                 intel_pmu_lbr_init_snb();
2379
2380                 x86_pmu.event_constraints = intel_snb_event_constraints;
2381                 x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
2382                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2383                 if (boot_cpu_data.x86_model == 45)
2384                         x86_pmu.extra_regs = intel_snbep_extra_regs;
2385                 else
2386                         x86_pmu.extra_regs = intel_snb_extra_regs;
2387                 /* all extra regs are per-cpu when HT is on */
2388                 x86_pmu.er_flags |= ERF_HAS_RSP_1;
2389                 x86_pmu.er_flags |= ERF_NO_HT_SHARING;
2390
2391                 x86_pmu.cpu_events = snb_events_attrs;
2392
2393                 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
2394                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2395                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2396                 /* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
2397                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
2398                         X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
2399
2400                 pr_cont("SandyBridge events, ");
2401                 break;
2402         case 58: /* IvyBridge */
2403         case 62: /* IvyBridge EP */
2404                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
2405                        sizeof(hw_cache_event_ids));
2406                 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
2407                        sizeof(hw_cache_extra_regs));
2408
2409                 intel_pmu_lbr_init_snb();
2410
2411                 x86_pmu.event_constraints = intel_ivb_event_constraints;
2412                 x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
2413                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2414                 if (boot_cpu_data.x86_model == 62)
2415                         x86_pmu.extra_regs = intel_snbep_extra_regs;
2416                 else
2417                         x86_pmu.extra_regs = intel_snb_extra_regs;
2418                 /* all extra regs are per-cpu when HT is on */
2419                 x86_pmu.er_flags |= ERF_HAS_RSP_1;
2420                 x86_pmu.er_flags |= ERF_NO_HT_SHARING;
2421
2422                 x86_pmu.cpu_events = snb_events_attrs;
2423
2424                 /* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
2425                 intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
2426                         X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
2427
2428                 pr_cont("IvyBridge events, ");
2429                 break;
2430
2431
2432         case 60: /* Haswell Client */
2433         case 70:
2434         case 71:
2435         case 63:
2436         case 69:
2437                 x86_pmu.late_ack = true;
2438                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids, sizeof(hw_cache_event_ids));
2439                 memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
2440
2441                 intel_pmu_lbr_init_snb();
2442
2443                 x86_pmu.event_constraints = intel_hsw_event_constraints;
2444                 x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
2445                 x86_pmu.extra_regs = intel_snb_extra_regs;
2446                 x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
2447                 /* all extra regs are per-cpu when HT is on */
2448                 x86_pmu.er_flags |= ERF_HAS_RSP_1;
2449                 x86_pmu.er_flags |= ERF_NO_HT_SHARING;
2450
2451                 x86_pmu.hw_config = hsw_hw_config;
2452                 x86_pmu.get_event_constraints = hsw_get_event_constraints;
2453                 x86_pmu.cpu_events = hsw_events_attrs;
2454                 pr_cont("Haswell events, ");
2455                 break;
2456
2457         default:
2458                 switch (x86_pmu.version) {
2459                 case 1:
2460                         x86_pmu.event_constraints = intel_v1_event_constraints;
2461                         pr_cont("generic architected perfmon v1, ");
2462                         break;
2463                 default:
2464                         /*
2465                          * default constraints for v2 and up
2466                          */
2467                         x86_pmu.event_constraints = intel_gen_event_constraints;
2468                         pr_cont("generic architected perfmon, ");
2469                         break;
2470                 }
2471         }
2472
2473         if (x86_pmu.num_counters > INTEL_PMC_MAX_GENERIC) {
2474                 WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
2475                      x86_pmu.num_counters, INTEL_PMC_MAX_GENERIC);
2476                 x86_pmu.num_counters = INTEL_PMC_MAX_GENERIC;
2477         }
2478         x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1;
2479
2480         if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
2481                 WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
2482                      x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
2483                 x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
2484         }
2485
2486         x86_pmu.intel_ctrl |=
2487                 ((1LL << x86_pmu.num_counters_fixed)-1) << INTEL_PMC_IDX_FIXED;
2488
2489         if (x86_pmu.event_constraints) {
2490                 /*
2491                  * event on fixed counter2 (REF_CYCLES) only works on this
2492                  * counter, so do not extend mask to generic counters
2493                  */
2494                 for_each_event_constraint(c, x86_pmu.event_constraints) {
2495                         if (c->cmask != FIXED_EVENT_FLAGS
2496                             || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
2497                                 continue;
2498                         }
2499
2500                         c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
2501                         c->weight += x86_pmu.num_counters;
2502                 }
2503         }
2504
2505         /* Support full width counters using alternative MSR range */
2506         if (x86_pmu.intel_cap.full_width_write) {
2507                 x86_pmu.max_period = x86_pmu.cntval_mask;
2508                 x86_pmu.perfctr = MSR_IA32_PMC0;
2509                 pr_cont("full-width counters, ");
2510         }
2511
2512         return 0;
2513 }