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