src/turbostat.c

   1 /*
   2  * turbostat -- Log CPU frequency and C-state residency
   3  * on modern Intel turbo-capable processors for collectd.
   4  *
   5  * Based on the 'turbostat' tool of the Linux kernel, found at
   6  * linux/tools/power/x86/turbostat/turbostat.c:
   7  * ----
   8  * Copyright (c) 2013 Intel Corporation.
   9  * Len Brown <len.brown@intel.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms and conditions of the GNU General Public License,
  13  * version 2, as published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  23  * ----
  24  * Ported to collectd by Vincent Brillault <git@lerya.net>
  25  */
  26
  27 /*
  28  * _GNU_SOURCE is required because of the following functions:
  29  * - CPU_ISSET_S
  30  * - CPU_ZERO_S
  31  * - CPU_SET_S
  32  * - CPU_FREE
  33  * - CPU_ALLOC
  34  * - CPU_ALLOC_SIZE
  35  */
  36 #define _GNU_SOURCE
  37
  38 #include <asm/msr-index.h>
  39 #include <stdarg.h>
  40 #include <stdio.h>
  41 #include <err.h>
  42 #include <unistd.h>
  43 #include <sys/types.h>
  44 #include <sys/wait.h>
  45 #include <sys/stat.h>
  46 #include <sys/resource.h>
  47 #include <fcntl.h>
  48 #include <signal.h>
  49 #include <sys/time.h>
  50 #include <stdlib.h>
  51 #include <dirent.h>
  52 #include <string.h>
  53 #include <ctype.h>
  54 #include <sched.h>
  55 #include <cpuid.h>
  56
  57 #include "collectd.h"
  58 #include "common.h"
  59 #include "plugin.h"
  60
  61 #define PLUGIN_NAME "turbostat"
  62
  63 static const char *proc_stat = "/proc/stat";
  64 static unsigned int skip_c0;
  65 static unsigned int skip_c1;
  66 static unsigned int do_nhm_cstates;
  67 static unsigned int do_snb_cstates;
  68 static unsigned int do_c8_c9_c10;
  69 static unsigned int do_slm_cstates;
  70 static unsigned int has_aperf;
  71 static unsigned int has_epb;
  72 static unsigned int units = 1000000000; /* Ghz etc */
  73 static unsigned int genuine_intel;
  74 static unsigned int has_invariant_tsc;
  75 static unsigned int do_nehalem_platform_info;
  76 static int do_smi;
  77 static unsigned int show_pkg;
  78 static unsigned int show_core;
  79 static unsigned int show_cpu;
  80 static unsigned int do_rapl;
  81 static unsigned int do_dts;
  82 static unsigned int do_ptm;
  83 static unsigned int tcc_activation_temp;
  84 static unsigned int tcc_activation_temp_override;
  85 static double rapl_power_units, rapl_energy_units, rapl_time_units;
  86 static double rapl_joule_counter_range;
  87
  88 #define RAPL_PKG                (1 << 0)
  89                                         /* 0x610 MSR_PKG_POWER_LIMIT */
  90                                         /* 0x611 MSR_PKG_ENERGY_STATUS */
  91 #define RAPL_PKG_PERF_STATUS    (1 << 1)
  92                                         /* 0x613 MSR_PKG_PERF_STATUS */
  93 #define RAPL_PKG_POWER_INFO     (1 << 2)
  94                                         /* 0x614 MSR_PKG_POWER_INFO */
  95
  96 #define RAPL_DRAM               (1 << 3)
  97                                         /* 0x618 MSR_DRAM_POWER_LIMIT */
  98                                         /* 0x619 MSR_DRAM_ENERGY_STATUS */
  99                                         /* 0x61c MSR_DRAM_POWER_INFO */
 100 #define RAPL_DRAM_PERF_STATUS   (1 << 4)
 101                                         /* 0x61b MSR_DRAM_PERF_STATUS */
 102
 103 #define RAPL_CORES              (1 << 5)
 104                                         /* 0x638 MSR_PP0_POWER_LIMIT */
 105                                         /* 0x639 MSR_PP0_ENERGY_STATUS */
 106 #define RAPL_CORE_POLICY        (1 << 6)
 107                                         /* 0x63a MSR_PP0_POLICY */
 108
 109
 110 #define RAPL_GFX                (1 << 7)
 111                                         /* 0x640 MSR_PP1_POWER_LIMIT */
 112                                         /* 0x641 MSR_PP1_ENERGY_STATUS */
 113                                         /* 0x642 MSR_PP1_POLICY */
 114 #define TJMAX_DEFAULT   100
 115
 116 int aperf_mperf_unstable;
 117 int backwards_count;
 118 char *progname;
 119
 120 cpu_set_t *cpu_present_set, *cpu_affinity_set;
 121 size_t cpu_present_setsize, cpu_affinity_setsize;
 122
 123 struct thread_data {
 124         unsigned long long tsc;
 125         unsigned long long aperf;
 126         unsigned long long mperf;
 127         unsigned long long c1;
 128         unsigned int smi_count;
 129         unsigned int cpu_id;
 130         unsigned int flags;
 131 #define CPU_IS_FIRST_THREAD_IN_CORE     0x2
 132 #define CPU_IS_FIRST_CORE_IN_PACKAGE    0x4
 133 } *thread_even, *thread_odd;
 134
 135 struct core_data {
 136         unsigned long long c3;
 137         unsigned long long c6;
 138         unsigned long long c7;
 139         unsigned int core_temp_c;
 140         unsigned int core_id;
 141 } *core_even, *core_odd;
 142
 143 struct pkg_data {
 144         unsigned long long pc2;
 145         unsigned long long pc3;
 146         unsigned long long pc6;
 147         unsigned long long pc7;
 148         unsigned long long pc8;
 149         unsigned long long pc9;
 150         unsigned long long pc10;
 151         unsigned int package_id;
 152         unsigned int energy_pkg;        /* MSR_PKG_ENERGY_STATUS */
 153         unsigned int energy_dram;       /* MSR_DRAM_ENERGY_STATUS */
 154         unsigned int energy_cores;      /* MSR_PP0_ENERGY_STATUS */
 155         unsigned int energy_gfx;        /* MSR_PP1_ENERGY_STATUS */
 156         unsigned int rapl_pkg_perf_status;      /* MSR_PKG_PERF_STATUS */
 157         unsigned int rapl_dram_perf_status;     /* MSR_DRAM_PERF_STATUS */
 158         unsigned int pkg_temp_c;
 159
 160 } *package_even, *package_odd;
 161
 162 #define ODD_COUNTERS thread_odd, core_odd, package_odd
 163 #define EVEN_COUNTERS thread_even, core_even, package_even
 164 static _Bool is_even = 1;
 165
 166 static _Bool allocated = 0;
 167 static _Bool initialized = 0;
 168
 169 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
 170         (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
 171                 topo.num_threads_per_core + \
 172                 (core_no) * topo.num_threads_per_core + (thread_no))
 173 #define GET_CORE(core_base, core_no, pkg_no) \
 174         (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
 175 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
 176
 177 struct topo_params {
 178         int num_packages;
 179         int num_cpus;
 180         int num_cores;
 181         int max_cpu_num;
 182         int num_cores_per_pkg;
 183         int num_threads_per_core;
 184 } topo;
 185
 186 struct timeval tv_even, tv_odd, tv_delta;
 187
 188 enum return_values {
 189         OK = 0,
 190         ERR_CPU_MIGRATE,
 191         ERR_MSR_IA32_APERF,
 192         ERR_MSR_IA32_MPERF,
 193         ERR_MSR_SMI_COUNT,
 194         ERR_MSR_CORE_C3_RESIDENCY,
 195         ERR_MSR_CORE_C6_RESIDENCY,
 196         ERR_MSR_CORE_C7_RESIDENCY,
 197         ERR_MSR_IA32_THERM_STATUS,
 198         ERR_MSR_PKG_C3_RESIDENCY,
 199         ERR_MSR_PKG_C6_RESIDENCY,
 200         ERR_MSR_PKG_C2_RESIDENCY,
 201         ERR_MSR_PKG_C7_RESIDENCY,
 202         ERR_MSR_PKG_C8_RESIDENCY,
 203         ERR_MSR_PKG_C9_RESIDENCY,
 204         ERR_MSR_PKG_C10_RESIDENCY,
 205         ERR_MSR_PKG_ENERGY_STATUS,
 206         ERR_MSR_PP0_ENERGY_STATUS,
 207         ERR_MSR_DRAM_ENERGY_STATUS,
 208         ERR_MSR_PP1_ENERGY_STATUS,
 209         ERR_MSR_PKG_PERF_STATUS,
 210         ERR_MSR_DRAM_PERF_STATUS,
 211         ERR_MSR_IA32_PACKAGE_THERM_STATUS,
 212         ERR_CPU_NOT_PRESENT,
 213         ERR_NO_MSR,
 214         ERR_CANT_OPEN_FILE,
 215         ERR_CANT_READ_NUMBER,
 216         ERR_CANT_READ_PROC_STAT,
 217         ERR_NO_INVARIANT_TSC,
 218         ERR_NO_APERF,
 219         ERR_CALLOC,
 220         ERR_CPU_ALLOC,
 221         ERR_NOT_ROOT,
 222 };
 223
 224 static int setup_all_buffers(void);
 225
 226 static int
 227 cpu_is_not_present(int cpu)
 228 {
 229         return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
 230 }
 231 /*
 232  * run func(thread, core, package) in topology order
 233  * skip non-present cpus
 234  */
 235
 236 static int __attribute__((warn_unused_result))
 237 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
 238         struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
 239 {
 240         int retval, pkg_no, core_no, thread_no;
 241
 242         for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
 243                 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
 244                         for (thread_no = 0; thread_no <
 245                                 topo.num_threads_per_core; ++thread_no) {
 246                                 struct thread_data *t;
 247                                 struct core_data *c;
 248                                 struct pkg_data *p;
 249
 250                                 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
 251
 252                                 if (cpu_is_not_present(t->cpu_id))
 253                                         continue;
 254
 255                                 c = GET_CORE(core_base, core_no, pkg_no);
 256                                 p = GET_PKG(pkg_base, pkg_no);
 257
 258                                 retval = func(t, c, p);
 259                                 if (retval)
 260                                         return retval;
 261                         }
 262                 }
 263         }
 264         return 0;
 265 }
 266
 267 static int __attribute__((warn_unused_result))
 268 cpu_migrate(int cpu)
 269 {
 270         CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
 271         CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
 272         if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
 273                 return -ERR_CPU_MIGRATE;
 274         else
 275                 return 0;
 276 }
 277
 278 static int __attribute__((warn_unused_result))
 279 get_msr(int cpu, off_t offset, unsigned long long *msr)
 280 {
 281         ssize_t retval;
 282         char pathname[32];
 283         int fd;
 284
 285         ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
 286         fd = open(pathname, O_RDONLY);
 287         if (fd < 0)
 288                 return -1;
 289
 290         retval = pread(fd, msr, sizeof *msr, offset);
 291         close(fd);
 292
 293         if (retval != sizeof *msr) {
 294                 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
 295                 return -1;
 296         }
 297
 298         return 0;
 299 }
 300
 301 #define DELTA_WRAP32(new, old)                  \
 302         if (new > old) {                        \
 303                 old = new - old;                \
 304         } else {                                \
 305                 old = 0x100000000 + new - old;  \
 306         }
 307
 308 static void
 309 delta_package(struct pkg_data *new, struct pkg_data *old)
 310 {
 311         old->pc2 = new->pc2 - old->pc2;
 312         old->pc3 = new->pc3 - old->pc3;
 313         old->pc6 = new->pc6 - old->pc6;
 314         old->pc7 = new->pc7 - old->pc7;
 315         old->pc8 = new->pc8 - old->pc8;
 316         old->pc9 = new->pc9 - old->pc9;
 317         old->pc10 = new->pc10 - old->pc10;
 318         old->pkg_temp_c = new->pkg_temp_c;
 319
 320         DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
 321         DELTA_WRAP32(new->energy_cores, old->energy_cores);
 322         DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
 323         DELTA_WRAP32(new->energy_dram, old->energy_dram);
 324         DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
 325         DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
 326 }
 327
 328 static void
 329 delta_core(struct core_data *new, struct core_data *old)
 330 {
 331         old->c3 = new->c3 - old->c3;
 332         old->c6 = new->c6 - old->c6;
 333         old->c7 = new->c7 - old->c7;
 334         old->core_temp_c = new->core_temp_c;
 335 }
 336
 337 /*
 338  * old = new - old
 339  */
 340 static int __attribute__((warn_unused_result))
 341 delta_thread(struct thread_data *new, struct thread_data *old,
 342         struct core_data *core_delta)
 343 {
 344         old->tsc = new->tsc - old->tsc;
 345
 346         /* check for TSC < 1 Mcycles over interval */
 347         if (old->tsc < (1000 * 1000)) {
 348                 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
 349                         "You can disable all c-states by booting with \"idle=poll\"\n"
 350                         "or just the deep ones with \"processor.max_cstate=1\"");
 351                 return -1;
 352         }
 353
 354         old->c1 = new->c1 - old->c1;
 355
 356         if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
 357                 old->aperf = new->aperf - old->aperf;
 358                 old->mperf = new->mperf - old->mperf;
 359         } else {
 360
 361                 if (!aperf_mperf_unstable) {
 362                         WARNING("%s: APERF or MPERF went backwards *\n", progname);
 363                         WARNING("* Frequency results do not cover entire interval *\n");
 364                         WARNING("* fix this by running Linux-2.6.30 or later *\n");
 365
 366                         aperf_mperf_unstable = 1;
 367                 }
 368                 /*
 369                  * mperf delta is likely a huge "positive" number
 370                  * can not use it for calculating c0 time
 371                  */
 372                 skip_c0 = 1;
 373                 skip_c1 = 1;
 374         }
 375
 376
 377         /*
 378          * As counter collection is not atomic,
 379          * it is possible for mperf's non-halted cycles + idle states
 380          * to exceed TSC's all cycles: show c1 = 0% in that case.
 381          */
 382         if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
 383                 old->c1 = 0;
 384         else {
 385                 /* normal case, derive c1 */
 386                 old->c1 = old->tsc - old->mperf - core_delta->c3
 387                         - core_delta->c6 - core_delta->c7;
 388         }
 389
 390         if (old->mperf == 0) {
 391                 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
 392                 old->mperf = 1; /* divide by 0 protection */
 393         }
 394
 395         if (do_smi)
 396                 old->smi_count = new->smi_count - old->smi_count;
 397
 398         return 0;
 399 }
 400
 401 static int __attribute__((warn_unused_result))
 402 delta_cpu(struct thread_data *t, struct core_data *c,
 403         struct pkg_data *p, struct thread_data *t2,
 404         struct core_data *c2, struct pkg_data *p2)
 405 {
 406         int ret;
 407
 408         /* calculate core delta only for 1st thread in core */
 409         if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
 410                 delta_core(c, c2);
 411
 412         /* always calculate thread delta */
 413         ret = delta_thread(t, t2, c2);  /* c2 is core delta */
 414         if (ret != 0)
 415                 return ret;
 416
 417         /* calculate package delta only for 1st core in package */
 418         if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
 419                 delta_package(p, p2);
 420
 421         return 0;
 422 }
 423
 424 static unsigned long long
 425 rdtsc(void)
 426 {
 427         unsigned int low, high;
 428
 429         asm volatile("rdtsc" : "=a" (low), "=d" (high));
 430
 431         return low | ((unsigned long long)high) << 32;
 432 }
 433
 434
 435 /*
 436  * get_counters(...)
 437  * migrate to cpu
 438  * acquire and record local counters for that cpu
 439  */
 440 static int __attribute__((warn_unused_result))
 441 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 442 {
 443         int cpu = t->cpu_id;
 444         unsigned long long msr;
 445
 446         if (cpu_migrate(cpu)) {
 447                 WARNING("Could not migrate to CPU %d\n", cpu);
 448                 return -ERR_CPU_MIGRATE;
 449         }
 450
 451         t->tsc = rdtsc();       /* we are running on local CPU of interest */
 452
 453         if (has_aperf) {
 454                 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
 455                         return -ERR_MSR_IA32_APERF;
 456                 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
 457                         return -ERR_MSR_IA32_MPERF;
 458         }
 459
 460         if (do_smi) {
 461                 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
 462                         return -ERR_MSR_SMI_COUNT;
 463                 t->smi_count = msr & 0xFFFFFFFF;
 464         }
 465
 466         /* collect core counters only for 1st thread in core */
 467         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 468                 return 0;
 469
 470         if (do_nhm_cstates && !do_slm_cstates) {
 471                 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
 472                         return -ERR_MSR_CORE_C3_RESIDENCY;
 473         }
 474
 475         if (do_nhm_cstates) {
 476                 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
 477                         return -ERR_MSR_CORE_C6_RESIDENCY;
 478         }
 479
 480         if (do_snb_cstates)
 481                 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
 482                         return -ERR_MSR_CORE_C7_RESIDENCY;
 483
 484         if (do_dts) {
 485                 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
 486                         return -ERR_MSR_IA32_THERM_STATUS;
 487                 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
 488         }
 489
 490
 491         /* collect package counters only for 1st core in package */
 492         if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 493                 return 0;
 494
 495         if (do_nhm_cstates && !do_slm_cstates) {
 496                 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
 497                         return -ERR_MSR_PKG_C3_RESIDENCY;
 498                 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
 499                         return -ERR_MSR_PKG_C6_RESIDENCY;
 500         }
 501         if (do_snb_cstates) {
 502                 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
 503                         return -ERR_MSR_PKG_C2_RESIDENCY;
 504                 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
 505                         return -ERR_MSR_PKG_C7_RESIDENCY;
 506         }
 507         if (do_c8_c9_c10) {
 508                 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
 509                         return -ERR_MSR_PKG_C8_RESIDENCY;
 510                 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
 511                         return -ERR_MSR_PKG_C9_RESIDENCY;
 512                 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
 513                         return -ERR_MSR_PKG_C10_RESIDENCY;
 514         }
 515         if (do_rapl & RAPL_PKG) {
 516                 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
 517                         return -ERR_MSR_PKG_ENERGY_STATUS;
 518                 p->energy_pkg = msr & 0xFFFFFFFF;
 519         }
 520         if (do_rapl & RAPL_CORES) {
 521                 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
 522                         return MSR_PP0_ENERGY_STATUS;
 523                 p->energy_cores = msr & 0xFFFFFFFF;
 524         }
 525         if (do_rapl & RAPL_DRAM) {
 526                 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
 527                         return -ERR_MSR_DRAM_ENERGY_STATUS;
 528                 p->energy_dram = msr & 0xFFFFFFFF;
 529         }
 530         if (do_rapl & RAPL_GFX) {
 531                 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
 532                         return -ERR_MSR_PP1_ENERGY_STATUS;
 533                 p->energy_gfx = msr & 0xFFFFFFFF;
 534         }
 535         if (do_rapl & RAPL_PKG_PERF_STATUS) {
 536                 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
 537                         return -ERR_MSR_PKG_PERF_STATUS;
 538                 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
 539         }
 540         if (do_rapl & RAPL_DRAM_PERF_STATUS) {
 541                 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
 542                         return -ERR_MSR_DRAM_PERF_STATUS;
 543                 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
 544         }
 545         if (do_ptm) {
 546                 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
 547                         return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
 548                 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
 549         }
 550         return 0;
 551 }
 552
 553 static void
 554 free_all_buffers(void)
 555 {
 556         allocated = 0;
 557         initialized = 0;
 558
 559         CPU_FREE(cpu_present_set);
 560         cpu_present_set = NULL;
 561         cpu_present_set = 0;
 562
 563         CPU_FREE(cpu_affinity_set);
 564         cpu_affinity_set = NULL;
 565         cpu_affinity_setsize = 0;
 566
 567         free(thread_even);
 568         free(core_even);
 569         free(package_even);
 570
 571         thread_even = NULL;
 572         core_even = NULL;
 573         package_even = NULL;
 574
 575         free(thread_odd);
 576         free(core_odd);
 577         free(package_odd);
 578
 579         thread_odd = NULL;
 580         core_odd = NULL;
 581         package_odd = NULL;
 582 }
 583
 584 /*
 585  * Parse a file containing a single int.
 586  */
 587 static int __attribute__ ((format(printf,1,2)))
 588 parse_int_file(const char *fmt, ...)
 589 {
 590         va_list args;
 591         char path[PATH_MAX];
 592         FILE *filep;
 593         int value;
 594
 595         va_start(args, fmt);
 596         vsnprintf(path, sizeof(path), fmt, args);
 597         va_end(args);
 598         filep = fopen(path, "r");
 599         if (!filep) {
 600                 ERROR("%s: open failed", path);
 601                 return -ERR_CANT_OPEN_FILE;
 602         }
 603         if (fscanf(filep, "%d", &value) != 1) {
 604                 ERROR("%s: failed to parse number from file", path);
 605                 return -ERR_CANT_READ_NUMBER;
 606         }
 607         fclose(filep);
 608         return value;
 609 }
 610
 611 /*
 612  * cpu_is_first_sibling_in_core(cpu)
 613  * return 1 if given CPU is 1st HT sibling in the core
 614  */
 615 static int
 616 cpu_is_first_sibling_in_core(int cpu)
 617 {
 618         return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
 619 }
 620
 621 /*
 622  * cpu_is_first_core_in_package(cpu)
 623  * return 1 if given CPU is 1st core in package
 624  */
 625 static int
 626 cpu_is_first_core_in_package(int cpu)
 627 {
 628         return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
 629 }
 630
 631 static int
 632 get_physical_package_id(int cpu)
 633 {
 634         return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
 635 }
 636
 637 static int
 638 get_core_id(int cpu)
 639 {
 640         return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
 641 }
 642
 643 static int
 644 get_num_ht_siblings(int cpu)
 645 {
 646         char path[80];
 647         FILE *filep;
 648         int sib1, sib2;
 649         int matches;
 650         char character;
 651
 652         ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
 653         filep = fopen(path, "r");
 654         if (!filep) {
 655                 ERROR("%s: open failed", path);
 656                 return -ERR_CANT_OPEN_FILE;
 657         }
 658         /*
 659          * file format:
 660          * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
 661          * otherwinse 1 sibling (self).
 662          */
 663         matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
 664
 665         fclose(filep);
 666
 667         if (matches == 3)
 668                 return 2;
 669         else
 670                 return 1;
 671 }
 672
 673 /*
 674  * run func(thread, core, package) in topology order
 675  * skip non-present cpus
 676  */
 677
 678
 679 static int __attribute__((warn_unused_result))
 680 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
 681         struct pkg_data *, struct thread_data *, struct core_data *,
 682         struct pkg_data *), struct thread_data *thread_base,
 683         struct core_data *core_base, struct pkg_data *pkg_base,
 684         struct thread_data *thread_base2, struct core_data *core_base2,
 685         struct pkg_data *pkg_base2)
 686 {
 687         int retval, pkg_no, core_no, thread_no;
 688
 689         for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
 690                 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
 691                         for (thread_no = 0; thread_no <
 692                                 topo.num_threads_per_core; ++thread_no) {
 693                                 struct thread_data *t, *t2;
 694                                 struct core_data *c, *c2;
 695                                 struct pkg_data *p, *p2;
 696
 697                                 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
 698
 699                                 if (cpu_is_not_present(t->cpu_id))
 700                                         continue;
 701
 702                                 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
 703
 704                                 c = GET_CORE(core_base, core_no, pkg_no);
 705                                 c2 = GET_CORE(core_base2, core_no, pkg_no);
 706
 707                                 p = GET_PKG(pkg_base, pkg_no);
 708                                 p2 = GET_PKG(pkg_base2, pkg_no);
 709
 710                                 retval = func(t, c, p, t2, c2, p2);
 711                                 if (retval)
 712                                         return retval;
 713                         }
 714                 }
 715         }
 716         return 0;
 717 }
 718
 719 /*
 720  * run func(cpu) on every cpu in /proc/stat
 721  * return max_cpu number
 722  */
 723 static int __attribute__((warn_unused_result))
 724 for_all_proc_cpus(int (func)(int))
 725 {
 726         FILE *fp;
 727         int cpu_num;
 728         int retval;
 729
 730         fp = fopen(proc_stat, "r");
 731         if (!fp) {
 732                 ERROR("%s: open failed", proc_stat);
 733                 return -ERR_CANT_OPEN_FILE;
 734         }
 735
 736         retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
 737         if (retval != 0) {
 738                 ERROR("%s: failed to parse format", proc_stat);
 739                 return -ERR_CANT_READ_PROC_STAT;
 740         }
 741
 742         while (1) {
 743                 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
 744                 if (retval != 1)
 745                         break;
 746
 747                 retval = func(cpu_num);
 748                 if (retval) {
 749                         fclose(fp);
 750                         return(retval);
 751                 }
 752         }
 753         fclose(fp);
 754         return 0;
 755 }
 756
 757 /*
 758  * count_cpus()
 759  * remember the last one seen, it will be the max
 760  */
 761 static int
 762 count_cpus(int cpu)
 763 {
 764         if (topo.max_cpu_num < cpu)
 765                 topo.max_cpu_num = cpu;
 766
 767         topo.num_cpus += 1;
 768         return 0;
 769 }
 770 static int
 771 mark_cpu_present(int cpu)
 772 {
 773         CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
 774         return 0;
 775 }
 776
 777
 778 static void
 779 turbostat_submit (const char *plugin_instance,
 780         const char *type, const char *type_instance,
 781         gauge_t value)
 782 {
 783         value_list_t vl = VALUE_LIST_INIT;
 784         value_t v;
 785
 786         v.gauge = value;
 787         vl.values = &v;
 788         vl.values_len = 1;
 789         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 790         sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
 791         if (plugin_instance != NULL)
 792                 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
 793         sstrncpy (vl.type, type, sizeof (vl.type));
 794         if (type_instance != NULL)
 795                 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 796
 797         plugin_dispatch_values (&vl);
 798 }
 799
 800 /*
 801  * column formatting convention & formats
 802  * package: "pk" 2 columns %2d
 803  * core: "cor" 3 columns %3d
 804  * CPU: "CPU" 3 columns %3d
 805  * Pkg_W: %6.2
 806  * Cor_W: %6.2
 807  * GFX_W: %5.2
 808  * RAM_W: %5.2
 809  * GHz: "GHz" 3 columns %3.2
 810  * TSC: "TSC" 3 columns %3.2
 811  * SMI: "SMI" 4 columns %4d
 812  * percentage " %pc3" %6.2
 813  * Perf Status percentage: %5.2
 814  * "CTMP" 4 columns %4d
 815  */
 816 #define NAME_LEN 12
 817 static int
 818 submit_counters(struct thread_data *t, struct core_data *c,
 819         struct pkg_data *p)
 820 {
 821         char name[NAME_LEN];
 822         double interval_float;
 823
 824         interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
 825
 826         snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
 827
 828         if (do_nhm_cstates) {
 829                 if (!skip_c0)
 830                         turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
 831                 if (!skip_c1)
 832                         turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
 833         }
 834
 835         /* GHz */
 836         if (has_aperf && ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc))))
 837                 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / units * t->aperf / t->mperf / interval_float);
 838
 839         /* SMI */
 840         if (do_smi)
 841                 turbostat_submit(NULL, "current", name, t->smi_count);
 842
 843         /* print per-core data only for 1st thread in core */
 844         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 845                 goto done;
 846
 847         snprintf(name, NAME_LEN, "core%02d", c->core_id);
 848
 849         if (do_nhm_cstates && !do_slm_cstates)
 850                 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
 851         if (do_nhm_cstates)
 852                 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
 853         if (do_snb_cstates)
 854                 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
 855
 856         if (do_dts)
 857                 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
 858
 859         /* print per-package data only for 1st core in package */
 860         if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 861                 goto done;
 862
 863         snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
 864
 865         if (do_ptm)
 866                 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
 867
 868         if (do_snb_cstates)
 869                 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
 870         if (do_nhm_cstates && !do_slm_cstates)
 871                 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
 872         if (do_nhm_cstates && !do_slm_cstates)
 873                 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
 874         if (do_snb_cstates)
 875                 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
 876         if (do_c8_c9_c10) {
 877                 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
 878                 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
 879                 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
 880         }
 881
 882         if (do_rapl) {
 883                 if (do_rapl & RAPL_PKG)
 884                         turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
 885                 if (do_rapl & RAPL_CORES)
 886                         turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
 887                 if (do_rapl & RAPL_GFX)
 888                         turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
 889                 if (do_rapl & RAPL_DRAM)
 890                         turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
 891         }
 892 done:
 893         return 0;
 894 }
 895
 896 static int
 897 turbostat_read(user_data_t * not_used)
 898 {
 899         int ret;
 900
 901         if (!allocated) {
 902                 if ((ret = setup_all_buffers()) < 0)
 903                         return ret;
 904         }
 905
 906         if (for_all_proc_cpus(cpu_is_not_present)) {
 907                 free_all_buffers();
 908                 if ((ret = setup_all_buffers()) < 0)
 909                         return ret;
 910                 if (for_all_proc_cpus(cpu_is_not_present))
 911                         return -ERR_CPU_NOT_PRESENT;
 912         }
 913
 914         if (!initialized) {
 915                 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
 916                         return ret;
 917                 gettimeofday(&tv_even, (struct timezone *)NULL);
 918                 is_even = 1;
 919                 initialized = 1;
 920                 return 0;
 921         }
 922
 923         if (is_even) {
 924                 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
 925                         return ret;
 926                 gettimeofday(&tv_odd, (struct timezone *)NULL);
 927                 is_even = 0;
 928                 timersub(&tv_odd, &tv_even, &tv_delta);
 929                 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
 930                         return ret;
 931                 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
 932                         return ret;
 933         } else {
 934                 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
 935                         return ret;
 936                 gettimeofday(&tv_even, (struct timezone *)NULL);
 937                 is_even = 1;
 938                 timersub(&tv_even, &tv_odd, &tv_delta);
 939                 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
 940                         return ret;
 941                 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
 942                         return ret;
 943         }
 944         return 0;
 945 }
 946
 947 static int __attribute__((warn_unused_result))
 948 check_dev_msr()
 949 {
 950         struct stat sb;
 951
 952         if (stat("/dev/cpu/0/msr", &sb)) {
 953                 ERROR("no /dev/cpu/0/msr\n"
 954                         "Try \"# modprobe msr\"");
 955                 return -ERR_NO_MSR;
 956         }
 957         return 0;
 958 }
 959
 960 static int __attribute__((warn_unused_result))
 961 check_super_user()
 962 {
 963         if (getuid() != 0) {
 964                 ERROR("must be root");
 965                 return -ERR_NOT_ROOT;
 966         }
 967         return 0;
 968 }
 969
 970
 971 #define RAPL_POWER_GRANULARITY  0x7FFF  /* 15 bit power granularity */
 972 #define RAPL_TIME_GRANULARITY   0x3F /* 6 bit time granularity */
 973
 974 static double
 975 get_tdp(unsigned int model)
 976 {
 977         unsigned long long msr;
 978
 979         if (do_rapl & RAPL_PKG_POWER_INFO)
 980                 if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
 981                         return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
 982
 983         switch (model) {
 984         case 0x37:
 985         case 0x4D:
 986                 return 30.0;
 987         default:
 988                 return 135.0;
 989         }
 990 }
 991
 992
 993 /*
 994  * rapl_probe()
 995  *
 996  * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
 997  */
 998 static void
 999 rapl_probe(unsigned int family, unsigned int model)
1000 {
1001         unsigned long long msr;
1002         unsigned int time_unit;
1003         double tdp;
1004
1005         if (!genuine_intel)
1006                 return;
1007
1008         if (family != 6)
1009                 return;
1010
1011         switch (model) {
1012         case 0x2A:
1013         case 0x3A:
1014         case 0x3C:      /* HSW */
1015         case 0x45:      /* HSW */
1016         case 0x46:      /* HSW */
1017                 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
1018                 break;
1019         case 0x3F:      /* HSX */
1020                 do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
1021                 break;
1022         case 0x2D:
1023         case 0x3E:
1024                 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
1025                 break;
1026         case 0x37:      /* BYT */
1027         case 0x4D:      /* AVN */
1028                 do_rapl = RAPL_PKG | RAPL_CORES ;
1029                 break;
1030         default:
1031                 return;
1032         }
1033
1034         /* units on package 0, verify later other packages match */
1035         if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1036                 return;
1037
1038         rapl_power_units = 1.0 / (1 << (msr & 0xF));
1039         if (model == 0x37)
1040                 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1041         else
1042                 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1043
1044         time_unit = msr >> 16 & 0xF;
1045         if (time_unit == 0)
1046                 time_unit = 0xA;
1047
1048         rapl_time_units = 1.0 / (1 << (time_unit));
1049
1050         tdp = get_tdp(model);
1051
1052         rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
1053 //      if (verbose)
1054 //              fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
1055
1056         return;
1057 }
1058
1059 static int
1060 is_snb(unsigned int family, unsigned int model)
1061 {
1062         if (!genuine_intel)
1063                 return 0;
1064
1065         switch (model) {
1066         case 0x2A:
1067         case 0x2D:
1068         case 0x3A:      /* IVB */
1069         case 0x3E:      /* IVB Xeon */
1070         case 0x3C:      /* HSW */
1071         case 0x3F:      /* HSW */
1072         case 0x45:      /* HSW */
1073         case 0x46:      /* HSW */
1074                 return 1;
1075         }
1076         return 0;
1077 }
1078
1079 static int
1080 has_c8_c9_c10(unsigned int family, unsigned int model)
1081 {
1082         if (!genuine_intel)
1083                 return 0;
1084
1085         switch (model) {
1086         case 0x45:
1087                 return 1;
1088         }
1089         return 0;
1090 }
1091
1092
1093 static int
1094 is_slm(unsigned int family, unsigned int model)
1095 {
1096         if (!genuine_intel)
1097                 return 0;
1098         switch (model) {
1099         case 0x37:      /* BYT */
1100         case 0x4D:      /* AVN */
1101                 return 1;
1102         }
1103         return 0;
1104 }
1105
1106 /*
1107  * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
1108  * the Thermal Control Circuit (TCC) activates.
1109  * This is usually equal to tjMax.
1110  *
1111  * Older processors do not have this MSR, so there we guess,
1112  * but also allow cmdline over-ride with -T.
1113  *
1114  * Several MSR temperature values are in units of degrees-C
1115  * below this value, including the Digital Thermal Sensor (DTS),
1116  * Package Thermal Management Sensor (PTM), and thermal event thresholds.
1117  */
1118 static int __attribute__((warn_unused_result))
1119 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1120 {
1121         unsigned long long msr;
1122         unsigned int target_c_local;
1123         int cpu;
1124
1125         /* tcc_activation_temp is used only for dts or ptm */
1126         if (!(do_dts || do_ptm))
1127                 return 0;
1128
1129         /* this is a per-package concept */
1130         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1131                 return 0;
1132
1133         cpu = t->cpu_id;
1134         if (cpu_migrate(cpu)) {
1135                 ERROR("Could not migrate to CPU %d\n", cpu);
1136                 return -ERR_CPU_MIGRATE;
1137         }
1138
1139         if (tcc_activation_temp_override != 0) {
1140                 tcc_activation_temp = tcc_activation_temp_override;
1141                 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
1142                         cpu, tcc_activation_temp);
1143                 return 0;
1144         }
1145
1146         /* Temperature Target MSR is Nehalem and newer only */
1147         if (!do_nehalem_platform_info)
1148                 goto guess;
1149
1150         if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
1151                 goto guess;
1152
1153         target_c_local = (msr >> 16) & 0x7F;
1154
1155         if (target_c_local < 85 || target_c_local > 127)
1156                 goto guess;
1157
1158         tcc_activation_temp = target_c_local;
1159
1160         return 0;
1161
1162 guess:
1163         tcc_activation_temp = TJMAX_DEFAULT;
1164         WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1165                 cpu, tcc_activation_temp);
1166
1167         return 0;
1168 }
1169
1170 static int __attribute__((warn_unused_result))
1171 check_cpuid()
1172 {
1173         unsigned int eax, ebx, ecx, edx, max_level;
1174         unsigned int fms, family, model;
1175
1176         eax = ebx = ecx = edx = 0;
1177
1178         __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1179
1180         if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1181                 genuine_intel = 1;
1182
1183         fms = 0;
1184         __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1185         family = (fms >> 8) & 0xf;
1186         model = (fms >> 4) & 0xf;
1187         if (family == 6 || family == 0xf)
1188                 model += ((fms >> 16) & 0xf) << 4;
1189
1190         if (!(edx & (1 << 5))) {
1191                 ERROR("CPUID: no MSR");
1192                 return -ERR_NO_MSR;
1193         }
1194
1195         /*
1196          * check max extended function levels of CPUID.
1197          * This is needed to check for invariant TSC.
1198          * This check is valid for both Intel and AMD.
1199          */
1200         ebx = ecx = edx = 0;
1201         __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1202
1203         if (max_level < 0x80000007) {
1204                 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1205                 return -ERR_NO_INVARIANT_TSC;
1206         }
1207
1208         /*
1209          * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1210          * this check is valid for both Intel and AMD
1211          */
1212         __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1213         has_invariant_tsc = edx & (1 << 8);
1214
1215         if (!has_invariant_tsc) {
1216                 ERROR("No invariant TSC");
1217                 return -ERR_NO_INVARIANT_TSC;
1218         }
1219
1220         /*
1221          * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1222          * this check is valid for both Intel and AMD
1223          */
1224
1225         __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1226         has_aperf = ecx & (1 << 0);
1227         do_dts = eax & (1 << 0);
1228         do_ptm = eax & (1 << 6);
1229         has_epb = ecx & (1 << 3);
1230
1231         if (!has_aperf) {
1232                 ERROR("No APERF");
1233                 return -ERR_NO_APERF;
1234         }
1235
1236         do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
1237         do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1238         do_smi = do_nhm_cstates;
1239         do_snb_cstates = is_snb(family, model);
1240         do_c8_c9_c10 = has_c8_c9_c10(family, model);
1241         do_slm_cstates = is_slm(family, model);
1242
1243         rapl_probe(family, model);
1244
1245         return 0;
1246 }
1247
1248
1249
1250 static int __attribute__((warn_unused_result))
1251 topology_probe()
1252 {
1253         int i;
1254         int ret;
1255         int max_core_id = 0;
1256         int max_package_id = 0;
1257         int max_siblings = 0;
1258         struct cpu_topology {
1259                 int core_id;
1260                 int physical_package_id;
1261         } *cpus;
1262
1263         /* Initialize num_cpus, max_cpu_num */
1264         topo.num_cpus = 0;
1265         topo.max_cpu_num = 0;
1266         ret = for_all_proc_cpus(count_cpus);
1267         if (ret < 0)
1268                 return ret;
1269         if (topo.num_cpus > 1)
1270                 show_cpu = 1;
1271
1272         DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1273
1274         cpus = calloc(1, (topo.max_cpu_num  + 1) * sizeof(struct cpu_topology));
1275         if (cpus == NULL) {
1276                 ERROR("calloc cpus");
1277                 return -ERR_CALLOC;
1278         }
1279
1280         /*
1281          * Allocate and initialize cpu_present_set
1282          */
1283         cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1284         if (cpu_present_set == NULL) {
1285                 free(cpus);
1286                 ERROR("CPU_ALLOC");
1287                 return -ERR_CPU_ALLOC;
1288         }
1289         cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1290         CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1291         ret = for_all_proc_cpus(mark_cpu_present);
1292         if (ret < 0) {
1293                 free(cpus);
1294                 return ret;
1295         }
1296
1297         /*
1298          * Allocate and initialize cpu_affinity_set
1299          */
1300         cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1301         if (cpu_affinity_set == NULL) {
1302                 free(cpus);
1303                 ERROR("CPU_ALLOC");
1304                 return -ERR_CPU_ALLOC;
1305         }
1306         cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1307         CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1308
1309
1310         /*
1311          * For online cpus
1312          * find max_core_id, max_package_id
1313          */
1314         for (i = 0; i <= topo.max_cpu_num; ++i) {
1315                 int siblings;
1316
1317                 if (cpu_is_not_present(i)) {
1318                         //if (verbose > 1)
1319                                 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1320                         continue;
1321                 }
1322                 cpus[i].core_id = get_core_id(i);
1323                 if (cpus[i].core_id < 0)
1324                         return cpus[i].core_id;
1325                 if (cpus[i].core_id > max_core_id)
1326                         max_core_id = cpus[i].core_id;
1327
1328                 cpus[i].physical_package_id = get_physical_package_id(i);
1329                 if (cpus[i].physical_package_id < 0)
1330                         return cpus[i].physical_package_id;
1331                 if (cpus[i].physical_package_id > max_package_id)
1332                         max_package_id = cpus[i].physical_package_id;
1333
1334                 siblings = get_num_ht_siblings(i);
1335                 if (siblings < 0)
1336                         return siblings;
1337                 if (siblings > max_siblings)
1338                         max_siblings = siblings;
1339                 DEBUG("cpu %d pkg %d core %d\n",
1340                         i, cpus[i].physical_package_id, cpus[i].core_id);
1341         }
1342         topo.num_cores_per_pkg = max_core_id + 1;
1343         DEBUG("max_core_id %d, sizing for %d cores per package\n",
1344                 max_core_id, topo.num_cores_per_pkg);
1345         if (topo.num_cores_per_pkg > 1)
1346                 show_core = 1;
1347
1348         topo.num_packages = max_package_id + 1;
1349         DEBUG("max_package_id %d, sizing for %d packages\n",
1350                 max_package_id, topo.num_packages);
1351         if (topo.num_packages > 1)
1352                 show_pkg = 1;
1353
1354         topo.num_threads_per_core = max_siblings;
1355         DEBUG("max_siblings %d\n", max_siblings);
1356
1357         free(cpus);
1358         return 0;
1359 }
1360
1361 static int
1362 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1363 {
1364         int i;
1365
1366         *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1367                 topo.num_packages, sizeof(struct thread_data));
1368         if (*t == NULL)
1369                 goto error;
1370
1371         for (i = 0; i < topo.num_threads_per_core *
1372                 topo.num_cores_per_pkg * topo.num_packages; i++)
1373                 (*t)[i].cpu_id = -1;
1374
1375         *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1376                 sizeof(struct core_data));
1377         if (*c == NULL)
1378                 goto error;
1379
1380         for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1381                 (*c)[i].core_id = -1;
1382
1383         *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1384         if (*p == NULL)
1385                 goto error;
1386
1387         for (i = 0; i < topo.num_packages; i++)
1388                 (*p)[i].package_id = i;
1389
1390         return 0;
1391 error:
1392         ERROR("calloc counters");
1393         return -ERR_CALLOC;
1394 }
1395 /*
1396  * init_counter()
1397  *
1398  * set cpu_id, core_num, pkg_num
1399  * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1400  *
1401  * increment topo.num_cores when 1st core in pkg seen
1402  */
1403 static int
1404 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1405         struct pkg_data *pkg_base, int thread_num, int core_num,
1406         int pkg_num, int cpu_id)
1407 {
1408         int ret;
1409         struct thread_data *t;
1410         struct core_data *c;
1411         struct pkg_data *p;
1412
1413         t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1414         c = GET_CORE(core_base, core_num, pkg_num);
1415         p = GET_PKG(pkg_base, pkg_num);
1416
1417         t->cpu_id = cpu_id;
1418         if (thread_num == 0) {
1419                 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1420                 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1421                         return ret;
1422                 } else if (ret != 0) {
1423                         t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1424                 }
1425         }
1426
1427         c->core_id = core_num;
1428         p->package_id = pkg_num;
1429
1430         return 0;
1431 }
1432
1433
1434 static int
1435 initialize_counters(int cpu_id)
1436 {
1437         int my_thread_id, my_core_id, my_package_id;
1438         int ret;
1439
1440         my_package_id = get_physical_package_id(cpu_id);
1441         if (my_package_id < 0)
1442                 return my_package_id;
1443         my_core_id = get_core_id(cpu_id);
1444         if (my_core_id < 0)
1445                 return my_core_id;
1446
1447         if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1448                 return ret;
1449         } else if (ret != 0) {
1450                 my_thread_id = 0;
1451                 topo.num_cores++;
1452         } else {
1453                 my_thread_id = 1;
1454         }
1455
1456         ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1457         if (ret < 0)
1458                 return ret;
1459         ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1460         if (ret < 0)
1461                 return ret;
1462         return 0;
1463 }
1464
1465 #define DO_OR_GOTO_ERR(something) \
1466 do {                         \
1467         ret = (something);     \
1468         if (ret < 0)         \
1469                 goto err;    \
1470 } while (0)
1471
1472 static int setup_all_buffers(void)
1473 {
1474         int ret;
1475
1476         DO_OR_GOTO_ERR(topology_probe());
1477         DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1478         DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1479         DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1480
1481         allocated = 1;
1482         return 0;
1483 err:
1484         free_all_buffers();
1485         return ret;
1486 }
1487
1488 static int
1489 turbostat_init(void)
1490 {
1491         int ret;
1492
1493         DO_OR_GOTO_ERR(check_cpuid());
1494         DO_OR_GOTO_ERR(check_dev_msr());
1495         DO_OR_GOTO_ERR(check_super_user());
1496         DO_OR_GOTO_ERR(setup_all_buffers());
1497         DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1498
1499         plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1500
1501         return 0;
1502 err:
1503         free_all_buffers();
1504         return ret;
1505 }
1506
1507 void module_register(void);
1508 void module_register(void)
1509 {
1510         plugin_register_init(PLUGIN_NAME, turbostat_init);
1511 }