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