tools/perf/util/mem-events.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stddef.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <errno.h>
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8 #include <unistd.h>
   9 #include <api/fs/fs.h>
  10 #include <linux/kernel.h>
  11 #include "map_symbol.h"
  12 #include "mem-events.h"
  13 #include "debug.h"
  14 #include "symbol.h"
  15 #include "pmu.h"
  16 #include "pmu-hybrid.h"
  17
  18 unsigned int perf_mem_events__loads_ldlat = 30;
  19
  20 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
  21
  22 static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
  23         E("ldlat-loads",        "cpu/mem-loads,ldlat=%u/P",     "cpu/events/mem-loads"),
  24         E("ldlat-stores",       "cpu/mem-stores/P",             "cpu/events/mem-stores"),
  25         E(NULL,                 NULL,                           NULL),
  26 };
  27 #undef E
  28
  29 static char mem_loads_name[100];
  30 static bool mem_loads_name__init;
  31
  32 struct perf_mem_event * __weak perf_mem_events__ptr(int i)
  33 {
  34         if (i >= PERF_MEM_EVENTS__MAX)
  35                 return NULL;
  36
  37         return &perf_mem_events[i];
  38 }
  39
  40 char * __weak perf_mem_events__name(int i, char *pmu_name  __maybe_unused)
  41 {
  42         struct perf_mem_event *e = perf_mem_events__ptr(i);
  43
  44         if (!e)
  45                 return NULL;
  46
  47         if (i == PERF_MEM_EVENTS__LOAD) {
  48                 if (!mem_loads_name__init) {
  49                         mem_loads_name__init = true;
  50                         scnprintf(mem_loads_name, sizeof(mem_loads_name),
  51                                   e->name, perf_mem_events__loads_ldlat);
  52                 }
  53                 return mem_loads_name;
  54         }
  55
  56         return (char *)e->name;
  57 }
  58
  59 __weak bool is_mem_loads_aux_event(struct evsel *leader __maybe_unused)
  60 {
  61         return false;
  62 }
  63
  64 int perf_mem_events__parse(const char *str)
  65 {
  66         char *tok, *saveptr = NULL;
  67         bool found = false;
  68         char *buf;
  69         int j;
  70
  71         /* We need buffer that we know we can write to. */
  72         buf = malloc(strlen(str) + 1);
  73         if (!buf)
  74                 return -ENOMEM;
  75
  76         strcpy(buf, str);
  77
  78         tok = strtok_r((char *)buf, ",", &saveptr);
  79
  80         while (tok) {
  81                 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
  82                         struct perf_mem_event *e = perf_mem_events__ptr(j);
  83
  84                         if (!e->tag)
  85                                 continue;
  86
  87                         if (strstr(e->tag, tok))
  88                                 e->record = found = true;
  89                 }
  90
  91                 tok = strtok_r(NULL, ",", &saveptr);
  92         }
  93
  94         free(buf);
  95
  96         if (found)
  97                 return 0;
  98
  99         pr_err("failed: event '%s' not found, use '-e list' to get list of available events\n", str);
 100         return -1;
 101 }
 102
 103 static bool perf_mem_event__supported(const char *mnt, char *sysfs_name)
 104 {
 105         char path[PATH_MAX];
 106         struct stat st;
 107
 108         scnprintf(path, PATH_MAX, "%s/devices/%s", mnt, sysfs_name);
 109         return !stat(path, &st);
 110 }
 111
 112 int perf_mem_events__init(void)
 113 {
 114         const char *mnt = sysfs__mount();
 115         bool found = false;
 116         int j;
 117
 118         if (!mnt)
 119                 return -ENOENT;
 120
 121         for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 122                 struct perf_mem_event *e = perf_mem_events__ptr(j);
 123                 struct perf_pmu *pmu;
 124                 char sysfs_name[100];
 125
 126                 /*
 127                  * If the event entry isn't valid, skip initialization
 128                  * and "e->supported" will keep false.
 129                  */
 130                 if (!e->tag)
 131                         continue;
 132
 133                 if (!perf_pmu__has_hybrid()) {
 134                         scnprintf(sysfs_name, sizeof(sysfs_name),
 135                                   e->sysfs_name, "cpu");
 136                         e->supported = perf_mem_event__supported(mnt, sysfs_name);
 137                 } else {
 138                         perf_pmu__for_each_hybrid_pmu(pmu) {
 139                                 scnprintf(sysfs_name, sizeof(sysfs_name),
 140                                           e->sysfs_name, pmu->name);
 141                                 e->supported |= perf_mem_event__supported(mnt, sysfs_name);
 142                         }
 143                 }
 144
 145                 if (e->supported)
 146                         found = true;
 147         }
 148
 149         return found ? 0 : -ENOENT;
 150 }
 151
 152 void perf_mem_events__list(void)
 153 {
 154         int j;
 155
 156         for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 157                 struct perf_mem_event *e = perf_mem_events__ptr(j);
 158
 159                 fprintf(stderr, "%-*s%-*s%s",
 160                         e->tag ? 13 : 0,
 161                         e->tag ? : "",
 162                         e->tag && verbose > 0 ? 25 : 0,
 163                         e->tag && verbose > 0 ? perf_mem_events__name(j, NULL) : "",
 164                         e->supported ? ": available\n" : "");
 165         }
 166 }
 167
 168 static void perf_mem_events__print_unsupport_hybrid(struct perf_mem_event *e,
 169                                                     int idx)
 170 {
 171         const char *mnt = sysfs__mount();
 172         char sysfs_name[100];
 173         struct perf_pmu *pmu;
 174
 175         perf_pmu__for_each_hybrid_pmu(pmu) {
 176                 scnprintf(sysfs_name, sizeof(sysfs_name), e->sysfs_name,
 177                           pmu->name);
 178                 if (!perf_mem_event__supported(mnt, sysfs_name)) {
 179                         pr_err("failed: event '%s' not supported\n",
 180                                perf_mem_events__name(idx, pmu->name));
 181                 }
 182         }
 183 }
 184
 185 int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
 186                                  char **rec_tmp, int *tmp_nr)
 187 {
 188         int i = *argv_nr, k = 0;
 189         struct perf_mem_event *e;
 190         struct perf_pmu *pmu;
 191         char *s;
 192
 193         for (int j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
 194                 e = perf_mem_events__ptr(j);
 195                 if (!e->record)
 196                         continue;
 197
 198                 if (!perf_pmu__has_hybrid()) {
 199                         if (!e->supported) {
 200                                 pr_err("failed: event '%s' not supported\n",
 201                                        perf_mem_events__name(j, NULL));
 202                                 return -1;
 203                         }
 204
 205                         rec_argv[i++] = "-e";
 206                         rec_argv[i++] = perf_mem_events__name(j, NULL);
 207                 } else {
 208                         if (!e->supported) {
 209                                 perf_mem_events__print_unsupport_hybrid(e, j);
 210                                 return -1;
 211                         }
 212
 213                         perf_pmu__for_each_hybrid_pmu(pmu) {
 214                                 rec_argv[i++] = "-e";
 215                                 s = perf_mem_events__name(j, pmu->name);
 216                                 if (s) {
 217                                         s = strdup(s);
 218                                         if (!s)
 219                                                 return -1;
 220
 221                                         rec_argv[i++] = s;
 222                                         rec_tmp[k++] = s;
 223                                 }
 224                         }
 225                 }
 226         }
 227
 228         *argv_nr = i;
 229         *tmp_nr = k;
 230         return 0;
 231 }
 232
 233 static const char * const tlb_access[] = {
 234         "N/A",
 235         "HIT",
 236         "MISS",
 237         "L1",
 238         "L2",
 239         "Walker",
 240         "Fault",
 241 };
 242
 243 int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 244 {
 245         size_t l = 0, i;
 246         u64 m = PERF_MEM_TLB_NA;
 247         u64 hit, miss;
 248
 249         sz -= 1; /* -1 for null termination */
 250         out[0] = '\0';
 251
 252         if (mem_info)
 253                 m = mem_info->data_src.mem_dtlb;
 254
 255         hit = m & PERF_MEM_TLB_HIT;
 256         miss = m & PERF_MEM_TLB_MISS;
 257
 258         /* already taken care of */
 259         m &= ~(PERF_MEM_TLB_HIT|PERF_MEM_TLB_MISS);
 260
 261         for (i = 0; m && i < ARRAY_SIZE(tlb_access); i++, m >>= 1) {
 262                 if (!(m & 0x1))
 263                         continue;
 264                 if (l) {
 265                         strcat(out, " or ");
 266                         l += 4;
 267                 }
 268                 l += scnprintf(out + l, sz - l, tlb_access[i]);
 269         }
 270         if (*out == '\0')
 271                 l += scnprintf(out, sz - l, "N/A");
 272         if (hit)
 273                 l += scnprintf(out + l, sz - l, " hit");
 274         if (miss)
 275                 l += scnprintf(out + l, sz - l, " miss");
 276
 277         return l;
 278 }
 279
 280 static const char * const mem_lvl[] = {
 281         "N/A",
 282         "HIT",
 283         "MISS",
 284         "L1",
 285         "LFB/MAB",
 286         "L2",
 287         "L3",
 288         "Local RAM",
 289         "Remote RAM (1 hop)",
 290         "Remote RAM (2 hops)",
 291         "Remote Cache (1 hop)",
 292         "Remote Cache (2 hops)",
 293         "I/O",
 294         "Uncached",
 295 };
 296
 297 static const char * const mem_lvlnum[] = {
 298         [PERF_MEM_LVLNUM_CXL] = "CXL",
 299         [PERF_MEM_LVLNUM_IO] = "I/O",
 300         [PERF_MEM_LVLNUM_ANY_CACHE] = "Any cache",
 301         [PERF_MEM_LVLNUM_LFB] = "LFB/MAB",
 302         [PERF_MEM_LVLNUM_RAM] = "RAM",
 303         [PERF_MEM_LVLNUM_PMEM] = "PMEM",
 304         [PERF_MEM_LVLNUM_NA] = "N/A",
 305 };
 306
 307 static const char * const mem_hops[] = {
 308         "N/A",
 309         /*
 310          * While printing, 'Remote' will be added to represent
 311          * 'Remote core, same node' accesses as remote field need
 312          * to be set with mem_hops field.
 313          */
 314         "core, same node",
 315         "node, same socket",
 316         "socket, same board",
 317         "board",
 318 };
 319
 320 static int perf_mem__op_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 321 {
 322         u64 op = PERF_MEM_LOCK_NA;
 323         int l;
 324
 325         if (mem_info)
 326                 op = mem_info->data_src.mem_op;
 327
 328         if (op & PERF_MEM_OP_NA)
 329                 l = scnprintf(out, sz, "N/A");
 330         else if (op & PERF_MEM_OP_LOAD)
 331                 l = scnprintf(out, sz, "LOAD");
 332         else if (op & PERF_MEM_OP_STORE)
 333                 l = scnprintf(out, sz, "STORE");
 334         else if (op & PERF_MEM_OP_PFETCH)
 335                 l = scnprintf(out, sz, "PFETCH");
 336         else if (op & PERF_MEM_OP_EXEC)
 337                 l = scnprintf(out, sz, "EXEC");
 338         else
 339                 l = scnprintf(out, sz, "No");
 340
 341         return l;
 342 }
 343
 344 int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 345 {
 346         size_t i, l = 0;
 347         u64 m =  PERF_MEM_LVL_NA;
 348         u64 hit, miss;
 349         int printed = 0;
 350
 351         if (mem_info)
 352                 m  = mem_info->data_src.mem_lvl;
 353
 354         sz -= 1; /* -1 for null termination */
 355         out[0] = '\0';
 356
 357         hit = m & PERF_MEM_LVL_HIT;
 358         miss = m & PERF_MEM_LVL_MISS;
 359
 360         /* already taken care of */
 361         m &= ~(PERF_MEM_LVL_HIT|PERF_MEM_LVL_MISS);
 362
 363         if (mem_info && mem_info->data_src.mem_remote) {
 364                 strcat(out, "Remote ");
 365                 l += 7;
 366         }
 367
 368         /*
 369          * Incase mem_hops field is set, we can skip printing data source via
 370          * PERF_MEM_LVL namespace.
 371          */
 372         if (mem_info && mem_info->data_src.mem_hops) {
 373                 l += scnprintf(out + l, sz - l, "%s ", mem_hops[mem_info->data_src.mem_hops]);
 374         } else {
 375                 for (i = 0; m && i < ARRAY_SIZE(mem_lvl); i++, m >>= 1) {
 376                         if (!(m & 0x1))
 377                                 continue;
 378                         if (printed++) {
 379                                 strcat(out, " or ");
 380                                 l += 4;
 381                         }
 382                         l += scnprintf(out + l, sz - l, mem_lvl[i]);
 383                 }
 384         }
 385
 386         if (mem_info && mem_info->data_src.mem_lvl_num) {
 387                 int lvl = mem_info->data_src.mem_lvl_num;
 388                 if (printed++) {
 389                         strcat(out, " or ");
 390                         l += 4;
 391                 }
 392                 if (mem_lvlnum[lvl])
 393                         l += scnprintf(out + l, sz - l, mem_lvlnum[lvl]);
 394                 else
 395                         l += scnprintf(out + l, sz - l, "L%d", lvl);
 396         }
 397
 398         if (l == 0)
 399                 l += scnprintf(out + l, sz - l, "N/A");
 400         if (hit)
 401                 l += scnprintf(out + l, sz - l, " hit");
 402         if (miss)
 403                 l += scnprintf(out + l, sz - l, " miss");
 404
 405         return l;
 406 }
 407
 408 static const char * const snoop_access[] = {
 409         "N/A",
 410         "None",
 411         "Hit",
 412         "Miss",
 413         "HitM",
 414 };
 415
 416 static const char * const snoopx_access[] = {
 417         "Fwd",
 418         "Peer",
 419 };
 420
 421 int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 422 {
 423         size_t i, l = 0;
 424         u64 m = PERF_MEM_SNOOP_NA;
 425
 426         sz -= 1; /* -1 for null termination */
 427         out[0] = '\0';
 428
 429         if (mem_info)
 430                 m = mem_info->data_src.mem_snoop;
 431
 432         for (i = 0; m && i < ARRAY_SIZE(snoop_access); i++, m >>= 1) {
 433                 if (!(m & 0x1))
 434                         continue;
 435                 if (l) {
 436                         strcat(out, " or ");
 437                         l += 4;
 438                 }
 439                 l += scnprintf(out + l, sz - l, snoop_access[i]);
 440         }
 441
 442         m = 0;
 443         if (mem_info)
 444                 m = mem_info->data_src.mem_snoopx;
 445
 446         for (i = 0; m && i < ARRAY_SIZE(snoopx_access); i++, m >>= 1) {
 447                 if (!(m & 0x1))
 448                         continue;
 449
 450                 if (l) {
 451                         strcat(out, " or ");
 452                         l += 4;
 453                 }
 454                 l += scnprintf(out + l, sz - l, snoopx_access[i]);
 455         }
 456
 457         if (*out == '\0')
 458                 l += scnprintf(out, sz - l, "N/A");
 459
 460         return l;
 461 }
 462
 463 int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 464 {
 465         u64 mask = PERF_MEM_LOCK_NA;
 466         int l;
 467
 468         if (mem_info)
 469                 mask = mem_info->data_src.mem_lock;
 470
 471         if (mask & PERF_MEM_LOCK_NA)
 472                 l = scnprintf(out, sz, "N/A");
 473         else if (mask & PERF_MEM_LOCK_LOCKED)
 474                 l = scnprintf(out, sz, "Yes");
 475         else
 476                 l = scnprintf(out, sz, "No");
 477
 478         return l;
 479 }
 480
 481 int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 482 {
 483         size_t l = 0;
 484         u64 mask = PERF_MEM_BLK_NA;
 485
 486         sz -= 1; /* -1 for null termination */
 487         out[0] = '\0';
 488
 489         if (mem_info)
 490                 mask = mem_info->data_src.mem_blk;
 491
 492         if (!mask || (mask & PERF_MEM_BLK_NA)) {
 493                 l += scnprintf(out + l, sz - l, " N/A");
 494                 return l;
 495         }
 496         if (mask & PERF_MEM_BLK_DATA)
 497                 l += scnprintf(out + l, sz - l, " Data");
 498         if (mask & PERF_MEM_BLK_ADDR)
 499                 l += scnprintf(out + l, sz - l, " Addr");
 500
 501         return l;
 502 }
 503
 504 int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 505 {
 506         int i = 0;
 507
 508         i += scnprintf(out, sz, "|OP ");
 509         i += perf_mem__op_scnprintf(out + i, sz - i, mem_info);
 510         i += scnprintf(out + i, sz - i, "|LVL ");
 511         i += perf_mem__lvl_scnprintf(out + i, sz, mem_info);
 512         i += scnprintf(out + i, sz - i, "|SNP ");
 513         i += perf_mem__snp_scnprintf(out + i, sz - i, mem_info);
 514         i += scnprintf(out + i, sz - i, "|TLB ");
 515         i += perf_mem__tlb_scnprintf(out + i, sz - i, mem_info);
 516         i += scnprintf(out + i, sz - i, "|LCK ");
 517         i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info);
 518         i += scnprintf(out + i, sz - i, "|BLK ");
 519         i += perf_mem__blk_scnprintf(out + i, sz - i, mem_info);
 520
 521         return i;
 522 }
 523
 524 int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)
 525 {
 526         union perf_mem_data_src *data_src = &mi->data_src;
 527         u64 daddr  = mi->daddr.addr;
 528         u64 op     = data_src->mem_op;
 529         u64 lvl    = data_src->mem_lvl;
 530         u64 snoop  = data_src->mem_snoop;
 531         u64 snoopx = data_src->mem_snoopx;
 532         u64 lock   = data_src->mem_lock;
 533         u64 blk    = data_src->mem_blk;
 534         /*
 535          * Skylake might report unknown remote level via this
 536          * bit, consider it when evaluating remote HITMs.
 537          *
 538          * Incase of power, remote field can also be used to denote cache
 539          * accesses from the another core of same node. Hence, setting
 540          * mrem only when HOPS is zero along with set remote field.
 541          */
 542         bool mrem  = (data_src->mem_remote && !data_src->mem_hops);
 543         int err = 0;
 544
 545 #define HITM_INC(__f)           \
 546 do {                            \
 547         stats->__f++;           \
 548         stats->tot_hitm++;      \
 549 } while (0)
 550
 551 #define PEER_INC(__f)           \
 552 do {                            \
 553         stats->__f++;           \
 554         stats->tot_peer++;      \
 555 } while (0)
 556
 557 #define P(a, b) PERF_MEM_##a##_##b
 558
 559         stats->nr_entries++;
 560
 561         if (lock & P(LOCK, LOCKED)) stats->locks++;
 562
 563         if (blk & P(BLK, DATA)) stats->blk_data++;
 564         if (blk & P(BLK, ADDR)) stats->blk_addr++;
 565
 566         if (op & P(OP, LOAD)) {
 567                 /* load */
 568                 stats->load++;
 569
 570                 if (!daddr) {
 571                         stats->ld_noadrs++;
 572                         return -1;
 573                 }
 574
 575                 if (lvl & P(LVL, HIT)) {
 576                         if (lvl & P(LVL, UNC)) stats->ld_uncache++;
 577                         if (lvl & P(LVL, IO))  stats->ld_io++;
 578                         if (lvl & P(LVL, LFB)) stats->ld_fbhit++;
 579                         if (lvl & P(LVL, L1 )) stats->ld_l1hit++;
 580                         if (lvl & P(LVL, L2)) {
 581                                 stats->ld_l2hit++;
 582
 583                                 if (snoopx & P(SNOOPX, PEER))
 584                                         PEER_INC(lcl_peer);
 585                         }
 586                         if (lvl & P(LVL, L3 )) {
 587                                 if (snoop & P(SNOOP, HITM))
 588                                         HITM_INC(lcl_hitm);
 589                                 else
 590                                         stats->ld_llchit++;
 591
 592                                 if (snoopx & P(SNOOPX, PEER))
 593                                         PEER_INC(lcl_peer);
 594                         }
 595
 596                         if (lvl & P(LVL, LOC_RAM)) {
 597                                 stats->lcl_dram++;
 598                                 if (snoop & P(SNOOP, HIT))
 599                                         stats->ld_shared++;
 600                                 else
 601                                         stats->ld_excl++;
 602                         }
 603
 604                         if ((lvl & P(LVL, REM_RAM1)) ||
 605                             (lvl & P(LVL, REM_RAM2)) ||
 606                              mrem) {
 607                                 stats->rmt_dram++;
 608                                 if (snoop & P(SNOOP, HIT))
 609                                         stats->ld_shared++;
 610                                 else
 611                                         stats->ld_excl++;
 612                         }
 613                 }
 614
 615                 if ((lvl & P(LVL, REM_CCE1)) ||
 616                     (lvl & P(LVL, REM_CCE2)) ||
 617                      mrem) {
 618                         if (snoop & P(SNOOP, HIT)) {
 619                                 stats->rmt_hit++;
 620                         } else if (snoop & P(SNOOP, HITM)) {
 621                                 HITM_INC(rmt_hitm);
 622                         } else if (snoopx & P(SNOOPX, PEER)) {
 623                                 stats->rmt_hit++;
 624                                 PEER_INC(rmt_peer);
 625                         }
 626                 }
 627
 628                 if ((lvl & P(LVL, MISS)))
 629                         stats->ld_miss++;
 630
 631         } else if (op & P(OP, STORE)) {
 632                 /* store */
 633                 stats->store++;
 634
 635                 if (!daddr) {
 636                         stats->st_noadrs++;
 637                         return -1;
 638                 }
 639
 640                 if (lvl & P(LVL, HIT)) {
 641                         if (lvl & P(LVL, UNC)) stats->st_uncache++;
 642                         if (lvl & P(LVL, L1 )) stats->st_l1hit++;
 643                 }
 644                 if (lvl & P(LVL, MISS))
 645                         if (lvl & P(LVL, L1)) stats->st_l1miss++;
 646                 if (lvl & P(LVL, NA))
 647                         stats->st_na++;
 648         } else {
 649                 /* unparsable data_src? */
 650                 stats->noparse++;
 651                 return -1;
 652         }
 653
 654         if (!mi->daddr.ms.map || !mi->iaddr.ms.map) {
 655                 stats->nomap++;
 656                 return -1;
 657         }
 658
 659 #undef P
 660 #undef HITM_INC
 661         return err;
 662 }
 663
 664 void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
 665 {
 666         stats->nr_entries       += add->nr_entries;
 667
 668         stats->locks            += add->locks;
 669         stats->store            += add->store;
 670         stats->st_uncache       += add->st_uncache;
 671         stats->st_noadrs        += add->st_noadrs;
 672         stats->st_l1hit         += add->st_l1hit;
 673         stats->st_l1miss        += add->st_l1miss;
 674         stats->st_na            += add->st_na;
 675         stats->load             += add->load;
 676         stats->ld_excl          += add->ld_excl;
 677         stats->ld_shared        += add->ld_shared;
 678         stats->ld_uncache       += add->ld_uncache;
 679         stats->ld_io            += add->ld_io;
 680         stats->ld_miss          += add->ld_miss;
 681         stats->ld_noadrs        += add->ld_noadrs;
 682         stats->ld_fbhit         += add->ld_fbhit;
 683         stats->ld_l1hit         += add->ld_l1hit;
 684         stats->ld_l2hit         += add->ld_l2hit;
 685         stats->ld_llchit        += add->ld_llchit;
 686         stats->lcl_hitm         += add->lcl_hitm;
 687         stats->rmt_hitm         += add->rmt_hitm;
 688         stats->tot_hitm         += add->tot_hitm;
 689         stats->lcl_peer         += add->lcl_peer;
 690         stats->rmt_peer         += add->rmt_peer;
 691         stats->tot_peer         += add->tot_peer;
 692         stats->rmt_hit          += add->rmt_hit;
 693         stats->lcl_dram         += add->lcl_dram;
 694         stats->rmt_dram         += add->rmt_dram;
 695         stats->blk_data         += add->blk_data;
 696         stats->blk_addr         += add->blk_addr;
 697         stats->nomap            += add->nomap;
 698         stats->noparse          += add->noparse;
 699 }