tools/power/x86/turbostat/turbostat.c

   1 /*
   2  * turbostat -- show CPU frequency and C-state residency
   3  * on modern Intel turbo-capable processors.
   4  *
   5  * Copyright (c) 2013 Intel Corporation.
   6  * Len Brown <len.brown@intel.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms and conditions of the GNU General Public License,
  10  * version 2, as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #define _GNU_SOURCE
  23 #include MSRHEADER
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26 #include <err.h>
  27 #include <unistd.h>
  28 #include <sys/types.h>
  29 #include <sys/wait.h>
  30 #include <sys/stat.h>
  31 #include <sys/resource.h>
  32 #include <fcntl.h>
  33 #include <signal.h>
  34 #include <sys/time.h>
  35 #include <stdlib.h>
  36 #include <getopt.h>
  37 #include <dirent.h>
  38 #include <string.h>
  39 #include <ctype.h>
  40 #include <sched.h>
  41 #include <cpuid.h>
  42 #include <linux/capability.h>
  43 #include <errno.h>
  44
  45 char *proc_stat = "/proc/stat";
  46 unsigned int interval_sec = 5;
  47 unsigned int debug;
  48 unsigned int rapl_joules;
  49 unsigned int summary_only;
  50 unsigned int dump_only;
  51 unsigned int skip_c0;
  52 unsigned int skip_c1;
  53 unsigned int do_nhm_cstates;
  54 unsigned int do_snb_cstates;
  55 unsigned int do_pc2;
  56 unsigned int do_pc3;
  57 unsigned int do_pc6;
  58 unsigned int do_pc7;
  59 unsigned int do_c8_c9_c10;
  60 unsigned int do_slm_cstates;
  61 unsigned int use_c1_residency_msr;
  62 unsigned int has_aperf;
  63 unsigned int has_epb;
  64 unsigned int units = 1000000;   /* MHz etc */
  65 unsigned int genuine_intel;
  66 unsigned int has_invariant_tsc;
  67 unsigned int do_nhm_platform_info;
  68 unsigned int do_nhm_turbo_ratio_limit;
  69 unsigned int do_ivt_turbo_ratio_limit;
  70 unsigned int extra_msr_offset32;
  71 unsigned int extra_msr_offset64;
  72 unsigned int extra_delta_offset32;
  73 unsigned int extra_delta_offset64;
  74 int do_smi;
  75 double bclk;
  76 unsigned int show_pkg;
  77 unsigned int show_core;
  78 unsigned int show_cpu;
  79 unsigned int show_pkg_only;
  80 unsigned int show_core_only;
  81 char *output_buffer, *outp;
  82 unsigned int do_rapl;
  83 unsigned int do_dts;
  84 unsigned int do_ptm;
  85 unsigned int tcc_activation_temp;
  86 unsigned int tcc_activation_temp_override;
  87 double rapl_power_units, rapl_energy_units, rapl_time_units;
  88 double rapl_joule_counter_range;
  89 unsigned int do_core_perf_limit_reasons;
  90 unsigned int do_gfx_perf_limit_reasons;
  91 unsigned int do_ring_perf_limit_reasons;
  92
  93 #define RAPL_PKG                (1 << 0)
  94                                         /* 0x610 MSR_PKG_POWER_LIMIT */
  95                                         /* 0x611 MSR_PKG_ENERGY_STATUS */
  96 #define RAPL_PKG_PERF_STATUS    (1 << 1)
  97                                         /* 0x613 MSR_PKG_PERF_STATUS */
  98 #define RAPL_PKG_POWER_INFO     (1 << 2)
  99                                         /* 0x614 MSR_PKG_POWER_INFO */
 100
 101 #define RAPL_DRAM               (1 << 3)
 102                                         /* 0x618 MSR_DRAM_POWER_LIMIT */
 103                                         /* 0x619 MSR_DRAM_ENERGY_STATUS */
 104                                         /* 0x61c MSR_DRAM_POWER_INFO */
 105 #define RAPL_DRAM_PERF_STATUS   (1 << 4)
 106                                         /* 0x61b MSR_DRAM_PERF_STATUS */
 107
 108 #define RAPL_CORES              (1 << 5)
 109                                         /* 0x638 MSR_PP0_POWER_LIMIT */
 110                                         /* 0x639 MSR_PP0_ENERGY_STATUS */
 111 #define RAPL_CORE_POLICY        (1 << 6)
 112                                         /* 0x63a MSR_PP0_POLICY */
 113
 114
 115 #define RAPL_GFX                (1 << 7)
 116                                         /* 0x640 MSR_PP1_POWER_LIMIT */
 117                                         /* 0x641 MSR_PP1_ENERGY_STATUS */
 118                                         /* 0x642 MSR_PP1_POLICY */
 119 #define TJMAX_DEFAULT   100
 120
 121 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 122
 123 int aperf_mperf_unstable;
 124 int backwards_count;
 125 char *progname;
 126
 127 cpu_set_t *cpu_present_set, *cpu_affinity_set;
 128 size_t cpu_present_setsize, cpu_affinity_setsize;
 129
 130 struct thread_data {
 131         unsigned long long tsc;
 132         unsigned long long aperf;
 133         unsigned long long mperf;
 134         unsigned long long c1;
 135         unsigned long long extra_msr64;
 136         unsigned long long extra_delta64;
 137         unsigned long long extra_msr32;
 138         unsigned long long extra_delta32;
 139         unsigned int smi_count;
 140         unsigned int cpu_id;
 141         unsigned int flags;
 142 #define CPU_IS_FIRST_THREAD_IN_CORE     0x2
 143 #define CPU_IS_FIRST_CORE_IN_PACKAGE    0x4
 144 } *thread_even, *thread_odd;
 145
 146 struct core_data {
 147         unsigned long long c3;
 148         unsigned long long c6;
 149         unsigned long long c7;
 150         unsigned int core_temp_c;
 151         unsigned int core_id;
 152 } *core_even, *core_odd;
 153
 154 struct pkg_data {
 155         unsigned long long pc2;
 156         unsigned long long pc3;
 157         unsigned long long pc6;
 158         unsigned long long pc7;
 159         unsigned long long pc8;
 160         unsigned long long pc9;
 161         unsigned long long pc10;
 162         unsigned int package_id;
 163         unsigned int energy_pkg;        /* MSR_PKG_ENERGY_STATUS */
 164         unsigned int energy_dram;       /* MSR_DRAM_ENERGY_STATUS */
 165         unsigned int energy_cores;      /* MSR_PP0_ENERGY_STATUS */
 166         unsigned int energy_gfx;        /* MSR_PP1_ENERGY_STATUS */
 167         unsigned int rapl_pkg_perf_status;      /* MSR_PKG_PERF_STATUS */
 168         unsigned int rapl_dram_perf_status;     /* MSR_DRAM_PERF_STATUS */
 169         unsigned int pkg_temp_c;
 170
 171 } *package_even, *package_odd;
 172
 173 #define ODD_COUNTERS thread_odd, core_odd, package_odd
 174 #define EVEN_COUNTERS thread_even, core_even, package_even
 175
 176 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
 177         (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
 178                 topo.num_threads_per_core + \
 179                 (core_no) * topo.num_threads_per_core + (thread_no))
 180 #define GET_CORE(core_base, core_no, pkg_no) \
 181         (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
 182 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
 183
 184 struct system_summary {
 185         struct thread_data threads;
 186         struct core_data cores;
 187         struct pkg_data packages;
 188 } sum, average;
 189
 190
 191 struct topo_params {
 192         int num_packages;
 193         int num_cpus;
 194         int num_cores;
 195         int max_cpu_num;
 196         int num_cores_per_pkg;
 197         int num_threads_per_core;
 198 } topo;
 199
 200 struct timeval tv_even, tv_odd, tv_delta;
 201
 202 void setup_all_buffers(void);
 203
 204 int cpu_is_not_present(int cpu)
 205 {
 206         return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
 207 }
 208 /*
 209  * run func(thread, core, package) in topology order
 210  * skip non-present cpus
 211  */
 212
 213 int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
 214         struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
 215 {
 216         int retval, pkg_no, core_no, thread_no;
 217
 218         for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
 219                 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
 220                         for (thread_no = 0; thread_no <
 221                                 topo.num_threads_per_core; ++thread_no) {
 222                                 struct thread_data *t;
 223                                 struct core_data *c;
 224                                 struct pkg_data *p;
 225
 226                                 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
 227
 228                                 if (cpu_is_not_present(t->cpu_id))
 229                                         continue;
 230
 231                                 c = GET_CORE(core_base, core_no, pkg_no);
 232                                 p = GET_PKG(pkg_base, pkg_no);
 233
 234                                 retval = func(t, c, p);
 235                                 if (retval)
 236                                         return retval;
 237                         }
 238                 }
 239         }
 240         return 0;
 241 }
 242
 243 int cpu_migrate(int cpu)
 244 {
 245         CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
 246         CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
 247         if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
 248                 return -1;
 249         else
 250                 return 0;
 251 }
 252
 253 int get_msr(int cpu, off_t offset, unsigned long long *msr)
 254 {
 255         ssize_t retval;
 256         char pathname[32];
 257         int fd;
 258
 259         sprintf(pathname, "/dev/cpu/%d/msr", cpu);
 260         fd = open(pathname, O_RDONLY);
 261         if (fd < 0)
 262                 err(-1, "%s open failed, try chown or chmod +r /dev/cpu/*/msr, or run as root", pathname);
 263
 264         retval = pread(fd, msr, sizeof *msr, offset);
 265         close(fd);
 266
 267         if (retval != sizeof *msr)
 268                 err(-1, "%s offset 0x%llx read failed", pathname, (unsigned long long)offset);
 269
 270         return 0;
 271 }
 272
 273 /*
 274  * Example Format w/ field column widths:
 275  *
 276  *  Package    Core     CPU Avg_MHz Bzy_MHz TSC_MHz     SMI   %Busy CPU_%c1 CPU_%c3 CPU_%c6 CPU_%c7 CoreTmp  PkgTmp Pkg%pc2 Pkg%pc3 Pkg%pc6 Pkg%pc7 PkgWatt CorWatt GFXWatt
 277  * 123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678123456781234567812345678
 278  */
 279
 280 void print_header(void)
 281 {
 282         if (show_pkg)
 283                 outp += sprintf(outp, " Package");
 284         if (show_core)
 285                 outp += sprintf(outp, "    Core");
 286         if (show_cpu)
 287                 outp += sprintf(outp, "     CPU");
 288         if (has_aperf)
 289                 outp += sprintf(outp, " Avg_MHz");
 290         if (has_aperf)
 291                 outp += sprintf(outp, "   %%Busy");
 292         if (has_aperf)
 293                 outp += sprintf(outp, " Bzy_MHz");
 294         outp += sprintf(outp, " TSC_MHz");
 295         if (do_smi)
 296                 outp += sprintf(outp, "     SMI");
 297         if (extra_delta_offset32)
 298                 outp += sprintf(outp, "  count 0x%03X", extra_delta_offset32);
 299         if (extra_delta_offset64)
 300                 outp += sprintf(outp, "  COUNT 0x%03X", extra_delta_offset64);
 301         if (extra_msr_offset32)
 302                 outp += sprintf(outp, "   MSR 0x%03X", extra_msr_offset32);
 303         if (extra_msr_offset64)
 304                 outp += sprintf(outp, "           MSR 0x%03X", extra_msr_offset64);
 305         if (do_nhm_cstates)
 306                 outp += sprintf(outp, "  CPU%%c1");
 307         if (do_nhm_cstates && !do_slm_cstates)
 308                 outp += sprintf(outp, "  CPU%%c3");
 309         if (do_nhm_cstates)
 310                 outp += sprintf(outp, "  CPU%%c6");
 311         if (do_snb_cstates)
 312                 outp += sprintf(outp, "  CPU%%c7");
 313
 314         if (do_dts)
 315                 outp += sprintf(outp, " CoreTmp");
 316         if (do_ptm)
 317                 outp += sprintf(outp, "  PkgTmp");
 318
 319         if (do_pc2)
 320                 outp += sprintf(outp, " Pkg%%pc2");
 321         if (do_pc3)
 322                 outp += sprintf(outp, " Pkg%%pc3");
 323         if (do_pc6)
 324                 outp += sprintf(outp, " Pkg%%pc6");
 325         if (do_pc7)
 326                 outp += sprintf(outp, " Pkg%%pc7");
 327         if (do_c8_c9_c10) {
 328                 outp += sprintf(outp, " Pkg%%pc8");
 329                 outp += sprintf(outp, " Pkg%%pc9");
 330                 outp += sprintf(outp, " Pk%%pc10");
 331         }
 332
 333         if (do_rapl && !rapl_joules) {
 334                 if (do_rapl & RAPL_PKG)
 335                         outp += sprintf(outp, " PkgWatt");
 336                 if (do_rapl & RAPL_CORES)
 337                         outp += sprintf(outp, " CorWatt");
 338                 if (do_rapl & RAPL_GFX)
 339                         outp += sprintf(outp, " GFXWatt");
 340                 if (do_rapl & RAPL_DRAM)
 341                         outp += sprintf(outp, " RAMWatt");
 342                 if (do_rapl & RAPL_PKG_PERF_STATUS)
 343                         outp += sprintf(outp, "   PKG_%%");
 344                 if (do_rapl & RAPL_DRAM_PERF_STATUS)
 345                         outp += sprintf(outp, "   RAM_%%");
 346         } else if (do_rapl && rapl_joules) {
 347                 if (do_rapl & RAPL_PKG)
 348                         outp += sprintf(outp, "   Pkg_J");
 349                 if (do_rapl & RAPL_CORES)
 350                         outp += sprintf(outp, "   Cor_J");
 351                 if (do_rapl & RAPL_GFX)
 352                         outp += sprintf(outp, "   GFX_J");
 353                 if (do_rapl & RAPL_DRAM)
 354                         outp += sprintf(outp, "   RAM_W");
 355                 if (do_rapl & RAPL_PKG_PERF_STATUS)
 356                         outp += sprintf(outp, "   PKG_%%");
 357                 if (do_rapl & RAPL_DRAM_PERF_STATUS)
 358                         outp += sprintf(outp, "   RAM_%%");
 359                 outp += sprintf(outp, "   time");
 360
 361         }
 362         outp += sprintf(outp, "\n");
 363 }
 364
 365 int dump_counters(struct thread_data *t, struct core_data *c,
 366         struct pkg_data *p)
 367 {
 368         outp += sprintf(outp, "t %p, c %p, p %p\n", t, c, p);
 369
 370         if (t) {
 371                 outp += sprintf(outp, "CPU: %d flags 0x%x\n",
 372                         t->cpu_id, t->flags);
 373                 outp += sprintf(outp, "TSC: %016llX\n", t->tsc);
 374                 outp += sprintf(outp, "aperf: %016llX\n", t->aperf);
 375                 outp += sprintf(outp, "mperf: %016llX\n", t->mperf);
 376                 outp += sprintf(outp, "c1: %016llX\n", t->c1);
 377                 outp += sprintf(outp, "msr0x%x: %08llX\n",
 378                         extra_delta_offset32, t->extra_delta32);
 379                 outp += sprintf(outp, "msr0x%x: %016llX\n",
 380                         extra_delta_offset64, t->extra_delta64);
 381                 outp += sprintf(outp, "msr0x%x: %08llX\n",
 382                         extra_msr_offset32, t->extra_msr32);
 383                 outp += sprintf(outp, "msr0x%x: %016llX\n",
 384                         extra_msr_offset64, t->extra_msr64);
 385                 if (do_smi)
 386                         outp += sprintf(outp, "SMI: %08X\n", t->smi_count);
 387         }
 388
 389         if (c) {
 390                 outp += sprintf(outp, "core: %d\n", c->core_id);
 391                 outp += sprintf(outp, "c3: %016llX\n", c->c3);
 392                 outp += sprintf(outp, "c6: %016llX\n", c->c6);
 393                 outp += sprintf(outp, "c7: %016llX\n", c->c7);
 394                 outp += sprintf(outp, "DTS: %dC\n", c->core_temp_c);
 395         }
 396
 397         if (p) {
 398                 outp += sprintf(outp, "package: %d\n", p->package_id);
 399                 outp += sprintf(outp, "pc2: %016llX\n", p->pc2);
 400                 if (do_pc3)
 401                         outp += sprintf(outp, "pc3: %016llX\n", p->pc3);
 402                 if (do_pc6)
 403                         outp += sprintf(outp, "pc6: %016llX\n", p->pc6);
 404                 if (do_pc7)
 405                         outp += sprintf(outp, "pc7: %016llX\n", p->pc7);
 406                 outp += sprintf(outp, "pc8: %016llX\n", p->pc8);
 407                 outp += sprintf(outp, "pc9: %016llX\n", p->pc9);
 408                 outp += sprintf(outp, "pc10: %016llX\n", p->pc10);
 409                 outp += sprintf(outp, "Joules PKG: %0X\n", p->energy_pkg);
 410                 outp += sprintf(outp, "Joules COR: %0X\n", p->energy_cores);
 411                 outp += sprintf(outp, "Joules GFX: %0X\n", p->energy_gfx);
 412                 outp += sprintf(outp, "Joules RAM: %0X\n", p->energy_dram);
 413                 outp += sprintf(outp, "Throttle PKG: %0X\n",
 414                         p->rapl_pkg_perf_status);
 415                 outp += sprintf(outp, "Throttle RAM: %0X\n",
 416                         p->rapl_dram_perf_status);
 417                 outp += sprintf(outp, "PTM: %dC\n", p->pkg_temp_c);
 418         }
 419
 420         outp += sprintf(outp, "\n");
 421
 422         return 0;
 423 }
 424
 425 /*
 426  * column formatting convention & formats
 427  */
 428 int format_counters(struct thread_data *t, struct core_data *c,
 429         struct pkg_data *p)
 430 {
 431         double interval_float;
 432         char *fmt8;
 433
 434          /* if showing only 1st thread in core and this isn't one, bail out */
 435         if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 436                 return 0;
 437
 438          /* if showing only 1st thread in pkg and this isn't one, bail out */
 439         if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 440                 return 0;
 441
 442         interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
 443
 444         /* topo columns, print blanks on 1st (average) line */
 445         if (t == &average.threads) {
 446                 if (show_pkg)
 447                         outp += sprintf(outp, "       -");
 448                 if (show_core)
 449                         outp += sprintf(outp, "       -");
 450                 if (show_cpu)
 451                         outp += sprintf(outp, "       -");
 452         } else {
 453                 if (show_pkg) {
 454                         if (p)
 455                                 outp += sprintf(outp, "%8d", p->package_id);
 456                         else
 457                                 outp += sprintf(outp, "       -");
 458                 }
 459                 if (show_core) {
 460                         if (c)
 461                                 outp += sprintf(outp, "%8d", c->core_id);
 462                         else
 463                                 outp += sprintf(outp, "       -");
 464                 }
 465                 if (show_cpu)
 466                         outp += sprintf(outp, "%8d", t->cpu_id);
 467         }
 468
 469         /* Avg_MHz */
 470         if (has_aperf)
 471                 outp += sprintf(outp, "%8.0f",
 472                         1.0 / units * t->aperf / interval_float);
 473
 474         /* %Busy */
 475         if (has_aperf) {
 476                 if (!skip_c0)
 477                         outp += sprintf(outp, "%8.2f", 100.0 * t->mperf/t->tsc);
 478                 else
 479                         outp += sprintf(outp, "********");
 480         }
 481
 482         /* Bzy_MHz */
 483         if (has_aperf)
 484                 outp += sprintf(outp, "%8.0f",
 485                         1.0 * t->tsc / units * t->aperf / t->mperf / interval_float);
 486
 487         /* TSC_MHz */
 488         outp += sprintf(outp, "%8.0f", 1.0 * t->tsc/units/interval_float);
 489
 490         /* SMI */
 491         if (do_smi)
 492                 outp += sprintf(outp, "%8d", t->smi_count);
 493
 494         /* delta */
 495         if (extra_delta_offset32)
 496                 outp += sprintf(outp, "  %11llu", t->extra_delta32);
 497
 498         /* DELTA */
 499         if (extra_delta_offset64)
 500                 outp += sprintf(outp, "  %11llu", t->extra_delta64);
 501         /* msr */
 502         if (extra_msr_offset32)
 503                 outp += sprintf(outp, "  0x%08llx", t->extra_msr32);
 504
 505         /* MSR */
 506         if (extra_msr_offset64)
 507                 outp += sprintf(outp, "  0x%016llx", t->extra_msr64);
 508
 509         if (do_nhm_cstates) {
 510                 if (!skip_c1)
 511                         outp += sprintf(outp, "%8.2f", 100.0 * t->c1/t->tsc);
 512                 else
 513                         outp += sprintf(outp, "********");
 514         }
 515
 516         /* print per-core data only for 1st thread in core */
 517         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 518                 goto done;
 519
 520         if (do_nhm_cstates && !do_slm_cstates)
 521                 outp += sprintf(outp, "%8.2f", 100.0 * c->c3/t->tsc);
 522         if (do_nhm_cstates)
 523                 outp += sprintf(outp, "%8.2f", 100.0 * c->c6/t->tsc);
 524         if (do_snb_cstates)
 525                 outp += sprintf(outp, "%8.2f", 100.0 * c->c7/t->tsc);
 526
 527         if (do_dts)
 528                 outp += sprintf(outp, "%8d", c->core_temp_c);
 529
 530         /* print per-package data only for 1st core in package */
 531         if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 532                 goto done;
 533
 534         if (do_ptm)
 535                 outp += sprintf(outp, "%8d", p->pkg_temp_c);
 536
 537         if (do_pc2)
 538                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc2/t->tsc);
 539         if (do_pc3)
 540                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc3/t->tsc);
 541         if (do_pc6)
 542                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc6/t->tsc);
 543         if (do_pc7)
 544                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc7/t->tsc);
 545         if (do_c8_c9_c10) {
 546                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc8/t->tsc);
 547                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc9/t->tsc);
 548                 outp += sprintf(outp, "%8.2f", 100.0 * p->pc10/t->tsc);
 549         }
 550
 551         /*
 552          * If measurement interval exceeds minimum RAPL Joule Counter range,
 553          * indicate that results are suspect by printing "**" in fraction place.
 554          */
 555         if (interval_float < rapl_joule_counter_range)
 556                 fmt8 = "%8.2f";
 557         else
 558                 fmt8 = " %6.0f**";
 559
 560         if (do_rapl && !rapl_joules) {
 561                 if (do_rapl & RAPL_PKG)
 562                         outp += sprintf(outp, fmt8, p->energy_pkg * rapl_energy_units / interval_float);
 563                 if (do_rapl & RAPL_CORES)
 564                         outp += sprintf(outp, fmt8, p->energy_cores * rapl_energy_units / interval_float);
 565                 if (do_rapl & RAPL_GFX)
 566                         outp += sprintf(outp, fmt8, p->energy_gfx * rapl_energy_units / interval_float);
 567                 if (do_rapl & RAPL_DRAM)
 568                         outp += sprintf(outp, fmt8, p->energy_dram * rapl_energy_units / interval_float);
 569                 if (do_rapl & RAPL_PKG_PERF_STATUS)
 570                         outp += sprintf(outp, fmt8, 100.0 * p->rapl_pkg_perf_status * rapl_time_units / interval_float);
 571                 if (do_rapl & RAPL_DRAM_PERF_STATUS)
 572                         outp += sprintf(outp, fmt8, 100.0 * p->rapl_dram_perf_status * rapl_time_units / interval_float);
 573         } else if (do_rapl && rapl_joules) {
 574                 if (do_rapl & RAPL_PKG)
 575                         outp += sprintf(outp, fmt8,
 576                                         p->energy_pkg * rapl_energy_units);
 577                 if (do_rapl & RAPL_CORES)
 578                         outp += sprintf(outp, fmt8,
 579                                         p->energy_cores * rapl_energy_units);
 580                 if (do_rapl & RAPL_GFX)
 581                         outp += sprintf(outp, fmt8,
 582                                         p->energy_gfx * rapl_energy_units);
 583                 if (do_rapl & RAPL_DRAM)
 584                         outp += sprintf(outp, fmt8,
 585                                         p->energy_dram * rapl_energy_units);
 586                 if (do_rapl & RAPL_PKG_PERF_STATUS)
 587                         outp += sprintf(outp, fmt8, 100.0 * p->rapl_pkg_perf_status * rapl_time_units / interval_float);
 588                 if (do_rapl & RAPL_DRAM_PERF_STATUS)
 589                         outp += sprintf(outp, fmt8, 100.0 * p->rapl_dram_perf_status * rapl_time_units / interval_float);
 590
 591                 outp += sprintf(outp, fmt8, interval_float);
 592         }
 593 done:
 594         outp += sprintf(outp, "\n");
 595
 596         return 0;
 597 }
 598
 599 void flush_stdout()
 600 {
 601         fputs(output_buffer, stdout);
 602         fflush(stdout);
 603         outp = output_buffer;
 604 }
 605 void flush_stderr()
 606 {
 607         fputs(output_buffer, stderr);
 608         outp = output_buffer;
 609 }
 610 void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 611 {
 612         static int printed;
 613
 614         if (!printed || !summary_only)
 615                 print_header();
 616
 617         if (topo.num_cpus > 1)
 618                 format_counters(&average.threads, &average.cores,
 619                         &average.packages);
 620
 621         printed = 1;
 622
 623         if (summary_only)
 624                 return;
 625
 626         for_all_cpus(format_counters, t, c, p);
 627 }
 628
 629 #define DELTA_WRAP32(new, old)                  \
 630         if (new > old) {                        \
 631                 old = new - old;                \
 632         } else {                                \
 633                 old = 0x100000000 + new - old;  \
 634         }
 635
 636 void
 637 delta_package(struct pkg_data *new, struct pkg_data *old)
 638 {
 639         old->pc2 = new->pc2 - old->pc2;
 640         if (do_pc3)
 641                 old->pc3 = new->pc3 - old->pc3;
 642         if (do_pc6)
 643                 old->pc6 = new->pc6 - old->pc6;
 644         if (do_pc7)
 645                 old->pc7 = new->pc7 - old->pc7;
 646         old->pc8 = new->pc8 - old->pc8;
 647         old->pc9 = new->pc9 - old->pc9;
 648         old->pc10 = new->pc10 - old->pc10;
 649         old->pkg_temp_c = new->pkg_temp_c;
 650
 651         DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
 652         DELTA_WRAP32(new->energy_cores, old->energy_cores);
 653         DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
 654         DELTA_WRAP32(new->energy_dram, old->energy_dram);
 655         DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
 656         DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
 657 }
 658
 659 void
 660 delta_core(struct core_data *new, struct core_data *old)
 661 {
 662         old->c3 = new->c3 - old->c3;
 663         old->c6 = new->c6 - old->c6;
 664         old->c7 = new->c7 - old->c7;
 665         old->core_temp_c = new->core_temp_c;
 666 }
 667
 668 /*
 669  * old = new - old
 670  */
 671 void
 672 delta_thread(struct thread_data *new, struct thread_data *old,
 673         struct core_data *core_delta)
 674 {
 675         old->tsc = new->tsc - old->tsc;
 676
 677         /* check for TSC < 1 Mcycles over interval */
 678         if (old->tsc < (1000 * 1000))
 679                 errx(-3, "Insanely slow TSC rate, TSC stops in idle?\n"
 680                      "You can disable all c-states by booting with \"idle=poll\"\n"
 681                      "or just the deep ones with \"processor.max_cstate=1\"");
 682
 683         old->c1 = new->c1 - old->c1;
 684
 685         if (has_aperf) {
 686                 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
 687                         old->aperf = new->aperf - old->aperf;
 688                         old->mperf = new->mperf - old->mperf;
 689                 } else {
 690
 691                         if (!aperf_mperf_unstable) {
 692                                 fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
 693                                 fprintf(stderr, "* Frequency results do not cover entire interval *\n");
 694                                 fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
 695
 696                                 aperf_mperf_unstable = 1;
 697                         }
 698                         /*
 699                          * mperf delta is likely a huge "positive" number
 700                          * can not use it for calculating c0 time
 701                          */
 702                         skip_c0 = 1;
 703                         skip_c1 = 1;
 704                 }
 705         }
 706
 707
 708         if (use_c1_residency_msr) {
 709                 /*
 710                  * Some models have a dedicated C1 residency MSR,
 711                  * which should be more accurate than the derivation below.
 712                  */
 713         } else {
 714                 /*
 715                  * As counter collection is not atomic,
 716                  * it is possible for mperf's non-halted cycles + idle states
 717                  * to exceed TSC's all cycles: show c1 = 0% in that case.
 718                  */
 719                 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
 720                         old->c1 = 0;
 721                 else {
 722                         /* normal case, derive c1 */
 723                         old->c1 = old->tsc - old->mperf - core_delta->c3
 724                                 - core_delta->c6 - core_delta->c7;
 725                 }
 726         }
 727
 728         if (old->mperf == 0) {
 729                 if (debug > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
 730                 old->mperf = 1; /* divide by 0 protection */
 731         }
 732
 733         old->extra_delta32 = new->extra_delta32 - old->extra_delta32;
 734         old->extra_delta32 &= 0xFFFFFFFF;
 735
 736         old->extra_delta64 = new->extra_delta64 - old->extra_delta64;
 737
 738         /*
 739          * Extra MSR is just a snapshot, simply copy latest w/o subtracting
 740          */
 741         old->extra_msr32 = new->extra_msr32;
 742         old->extra_msr64 = new->extra_msr64;
 743
 744         if (do_smi)
 745                 old->smi_count = new->smi_count - old->smi_count;
 746 }
 747
 748 int delta_cpu(struct thread_data *t, struct core_data *c,
 749         struct pkg_data *p, struct thread_data *t2,
 750         struct core_data *c2, struct pkg_data *p2)
 751 {
 752         /* calculate core delta only for 1st thread in core */
 753         if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
 754                 delta_core(c, c2);
 755
 756         /* always calculate thread delta */
 757         delta_thread(t, t2, c2);        /* c2 is core delta */
 758
 759         /* calculate package delta only for 1st core in package */
 760         if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
 761                 delta_package(p, p2);
 762
 763         return 0;
 764 }
 765
 766 void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 767 {
 768         t->tsc = 0;
 769         t->aperf = 0;
 770         t->mperf = 0;
 771         t->c1 = 0;
 772
 773         t->smi_count = 0;
 774         t->extra_delta32 = 0;
 775         t->extra_delta64 = 0;
 776
 777         /* tells format_counters to dump all fields from this set */
 778         t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;
 779
 780         c->c3 = 0;
 781         c->c6 = 0;
 782         c->c7 = 0;
 783         c->core_temp_c = 0;
 784
 785         p->pc2 = 0;
 786         if (do_pc3)
 787                 p->pc3 = 0;
 788         if (do_pc6)
 789                 p->pc6 = 0;
 790         if (do_pc7)
 791                 p->pc7 = 0;
 792         p->pc8 = 0;
 793         p->pc9 = 0;
 794         p->pc10 = 0;
 795
 796         p->energy_pkg = 0;
 797         p->energy_dram = 0;
 798         p->energy_cores = 0;
 799         p->energy_gfx = 0;
 800         p->rapl_pkg_perf_status = 0;
 801         p->rapl_dram_perf_status = 0;
 802         p->pkg_temp_c = 0;
 803 }
 804 int sum_counters(struct thread_data *t, struct core_data *c,
 805         struct pkg_data *p)
 806 {
 807         average.threads.tsc += t->tsc;
 808         average.threads.aperf += t->aperf;
 809         average.threads.mperf += t->mperf;
 810         average.threads.c1 += t->c1;
 811
 812         average.threads.extra_delta32 += t->extra_delta32;
 813         average.threads.extra_delta64 += t->extra_delta64;
 814
 815         /* sum per-core values only for 1st thread in core */
 816         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 817                 return 0;
 818
 819         average.cores.c3 += c->c3;
 820         average.cores.c6 += c->c6;
 821         average.cores.c7 += c->c7;
 822
 823         average.cores.core_temp_c = MAX(average.cores.core_temp_c, c->core_temp_c);
 824
 825         /* sum per-pkg values only for 1st core in pkg */
 826         if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 827                 return 0;
 828
 829         average.packages.pc2 += p->pc2;
 830         if (do_pc3)
 831                 average.packages.pc3 += p->pc3;
 832         if (do_pc6)
 833                 average.packages.pc6 += p->pc6;
 834         if (do_pc7)
 835                 average.packages.pc7 += p->pc7;
 836         average.packages.pc8 += p->pc8;
 837         average.packages.pc9 += p->pc9;
 838         average.packages.pc10 += p->pc10;
 839
 840         average.packages.energy_pkg += p->energy_pkg;
 841         average.packages.energy_dram += p->energy_dram;
 842         average.packages.energy_cores += p->energy_cores;
 843         average.packages.energy_gfx += p->energy_gfx;
 844
 845         average.packages.pkg_temp_c = MAX(average.packages.pkg_temp_c, p->pkg_temp_c);
 846
 847         average.packages.rapl_pkg_perf_status += p->rapl_pkg_perf_status;
 848         average.packages.rapl_dram_perf_status += p->rapl_dram_perf_status;
 849         return 0;
 850 }
 851 /*
 852  * sum the counters for all cpus in the system
 853  * compute the weighted average
 854  */
 855 void compute_average(struct thread_data *t, struct core_data *c,
 856         struct pkg_data *p)
 857 {
 858         clear_counters(&average.threads, &average.cores, &average.packages);
 859
 860         for_all_cpus(sum_counters, t, c, p);
 861
 862         average.threads.tsc /= topo.num_cpus;
 863         average.threads.aperf /= topo.num_cpus;
 864         average.threads.mperf /= topo.num_cpus;
 865         average.threads.c1 /= topo.num_cpus;
 866
 867         average.threads.extra_delta32 /= topo.num_cpus;
 868         average.threads.extra_delta32 &= 0xFFFFFFFF;
 869
 870         average.threads.extra_delta64 /= topo.num_cpus;
 871
 872         average.cores.c3 /= topo.num_cores;
 873         average.cores.c6 /= topo.num_cores;
 874         average.cores.c7 /= topo.num_cores;
 875
 876         average.packages.pc2 /= topo.num_packages;
 877         if (do_pc3)
 878                 average.packages.pc3 /= topo.num_packages;
 879         if (do_pc6)
 880                 average.packages.pc6 /= topo.num_packages;
 881         if (do_pc7)
 882                 average.packages.pc7 /= topo.num_packages;
 883
 884         average.packages.pc8 /= topo.num_packages;
 885         average.packages.pc9 /= topo.num_packages;
 886         average.packages.pc10 /= topo.num_packages;
 887 }
 888
 889 static unsigned long long rdtsc(void)
 890 {
 891         unsigned int low, high;
 892
 893         asm volatile("rdtsc" : "=a" (low), "=d" (high));
 894
 895         return low | ((unsigned long long)high) << 32;
 896 }
 897
 898
 899 /*
 900  * get_counters(...)
 901  * migrate to cpu
 902  * acquire and record local counters for that cpu
 903  */
 904 int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 905 {
 906         int cpu = t->cpu_id;
 907         unsigned long long msr;
 908
 909         if (cpu_migrate(cpu)) {
 910                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
 911                 return -1;
 912         }
 913
 914         t->tsc = rdtsc();       /* we are running on local CPU of interest */
 915
 916         if (has_aperf) {
 917                 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
 918                         return -3;
 919                 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
 920                         return -4;
 921         }
 922
 923         if (do_smi) {
 924                 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
 925                         return -5;
 926                 t->smi_count = msr & 0xFFFFFFFF;
 927         }
 928         if (extra_delta_offset32) {
 929                 if (get_msr(cpu, extra_delta_offset32, &msr))
 930                         return -5;
 931                 t->extra_delta32 = msr & 0xFFFFFFFF;
 932         }
 933
 934         if (extra_delta_offset64)
 935                 if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))
 936                         return -5;
 937
 938         if (extra_msr_offset32) {
 939                 if (get_msr(cpu, extra_msr_offset32, &msr))
 940                         return -5;
 941                 t->extra_msr32 = msr & 0xFFFFFFFF;
 942         }
 943
 944         if (extra_msr_offset64)
 945                 if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
 946                         return -5;
 947
 948         if (use_c1_residency_msr) {
 949                 if (get_msr(cpu, MSR_CORE_C1_RES, &t->c1))
 950                         return -6;
 951         }
 952
 953         /* collect core counters only for 1st thread in core */
 954         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 955                 return 0;
 956
 957         if (do_nhm_cstates && !do_slm_cstates) {
 958                 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
 959                         return -6;
 960         }
 961
 962         if (do_nhm_cstates) {
 963                 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
 964                         return -7;
 965         }
 966
 967         if (do_snb_cstates)
 968                 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
 969                         return -8;
 970
 971         if (do_dts) {
 972                 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
 973                         return -9;
 974                 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
 975         }
 976
 977
 978         /* collect package counters only for 1st core in package */
 979         if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 980                 return 0;
 981
 982         if (do_pc3)
 983                 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
 984                         return -9;
 985         if (do_pc6)
 986                 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
 987                         return -10;
 988         if (do_pc2)
 989                 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
 990                         return -11;
 991         if (do_pc7)
 992                 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
 993                         return -12;
 994         if (do_c8_c9_c10) {
 995                 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
 996                         return -13;
 997                 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
 998                         return -13;
 999                 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
1000                         return -13;
1001         }
1002         if (do_rapl & RAPL_PKG) {
1003                 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
1004                         return -13;
1005                 p->energy_pkg = msr & 0xFFFFFFFF;
1006         }
1007         if (do_rapl & RAPL_CORES) {
1008                 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
1009                         return -14;
1010                 p->energy_cores = msr & 0xFFFFFFFF;
1011         }
1012         if (do_rapl & RAPL_DRAM) {
1013                 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
1014                         return -15;
1015                 p->energy_dram = msr & 0xFFFFFFFF;
1016         }
1017         if (do_rapl & RAPL_GFX) {
1018                 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
1019                         return -16;
1020                 p->energy_gfx = msr & 0xFFFFFFFF;
1021         }
1022         if (do_rapl & RAPL_PKG_PERF_STATUS) {
1023                 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
1024                         return -16;
1025                 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
1026         }
1027         if (do_rapl & RAPL_DRAM_PERF_STATUS) {
1028                 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
1029                         return -16;
1030                 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
1031         }
1032         if (do_ptm) {
1033                 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
1034                         return -17;
1035                 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
1036         }
1037         return 0;
1038 }
1039
1040 /*
1041  * MSR_PKG_CST_CONFIG_CONTROL decoding for pkg_cstate_limit:
1042  * If you change the values, note they are used both in comparisons
1043  * (>= PCL__7) and to index pkg_cstate_limit_strings[].
1044  */
1045
1046 #define PCLUKN 0 /* Unknown */
1047 #define PCLRSV 1 /* Reserved */
1048 #define PCL__0 2 /* PC0 */
1049 #define PCL__1 3 /* PC1 */
1050 #define PCL__2 4 /* PC2 */
1051 #define PCL__3 5 /* PC3 */
1052 #define PCL__4 6 /* PC4 */
1053 #define PCL__6 7 /* PC6 */
1054 #define PCL_6N 8 /* PC6 No Retention */
1055 #define PCL_6R 9 /* PC6 Retention */
1056 #define PCL__7 10 /* PC7 */
1057 #define PCL_7S 11 /* PC7 Shrink */
1058 #define PCLUNL 12 /* Unlimited */
1059
1060 int pkg_cstate_limit = PCLUKN;
1061 char *pkg_cstate_limit_strings[] = { "reserved", "unknown", "pc0", "pc1", "pc2",
1062         "pc3", "pc4", "pc6", "pc6n", "pc6r", "pc7", "pc7s", "unlimited"};
1063
1064 int nhm_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCL__3, PCL__6, PCL__7, PCLRSV, PCLRSV, PCLUNL};
1065 int snb_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCL__7, PCL_7S, PCLRSV, PCLUNL};
1066 int hsw_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL__3, PCL__6, PCL__7, PCL_7S, PCLRSV, PCLUNL};
1067 int slv_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, PCL__6, PCL__7};
1068 int amt_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCL__2, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7};
1069 int phi_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL};
1070
1071 void print_verbose_header(void)
1072 {
1073         unsigned long long msr;
1074         unsigned int ratio;
1075
1076         if (!do_nhm_platform_info)
1077                 return;
1078
1079         get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);
1080
1081         fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
1082
1083         ratio = (msr >> 40) & 0xFF;
1084         fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
1085                 ratio, bclk, ratio * bclk);
1086
1087         ratio = (msr >> 8) & 0xFF;
1088         fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
1089                 ratio, bclk, ratio * bclk);
1090
1091         get_msr(0, MSR_IA32_POWER_CTL, &msr);
1092         fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E auto-promotion: %sabled)\n",
1093                 msr, msr & 0x2 ? "EN" : "DIS");
1094
1095         if (!do_ivt_turbo_ratio_limit)
1096                 goto print_nhm_turbo_ratio_limits;
1097
1098         get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr);
1099
1100         fprintf(stderr, "cpu0: MSR_IVT_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
1101
1102         ratio = (msr >> 56) & 0xFF;
1103         if (ratio)
1104                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 16 active cores\n",
1105                         ratio, bclk, ratio * bclk);
1106
1107         ratio = (msr >> 48) & 0xFF;
1108         if (ratio)
1109                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 15 active cores\n",
1110                         ratio, bclk, ratio * bclk);
1111
1112         ratio = (msr >> 40) & 0xFF;
1113         if (ratio)
1114                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 14 active cores\n",
1115                         ratio, bclk, ratio * bclk);
1116
1117         ratio = (msr >> 32) & 0xFF;
1118         if (ratio)
1119                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 13 active cores\n",
1120                         ratio, bclk, ratio * bclk);
1121
1122         ratio = (msr >> 24) & 0xFF;
1123         if (ratio)
1124                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 12 active cores\n",
1125                         ratio, bclk, ratio * bclk);
1126
1127         ratio = (msr >> 16) & 0xFF;
1128         if (ratio)
1129                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 11 active cores\n",
1130                         ratio, bclk, ratio * bclk);
1131
1132         ratio = (msr >> 8) & 0xFF;
1133         if (ratio)
1134                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 10 active cores\n",
1135                         ratio, bclk, ratio * bclk);
1136
1137         ratio = (msr >> 0) & 0xFF;
1138         if (ratio)
1139                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n",
1140                         ratio, bclk, ratio * bclk);
1141
1142 print_nhm_turbo_ratio_limits:
1143         get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
1144
1145 #define SNB_C1_AUTO_UNDEMOTE              (1UL << 27)
1146 #define SNB_C3_AUTO_UNDEMOTE              (1UL << 28)
1147
1148         fprintf(stderr, "cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x%08llx", msr);
1149
1150         fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: %s)\n",
1151                 (msr & SNB_C3_AUTO_UNDEMOTE) ? "UNdemote-C3, " : "",
1152                 (msr & SNB_C1_AUTO_UNDEMOTE) ? "UNdemote-C1, " : "",
1153                 (msr & NHM_C3_AUTO_DEMOTE) ? "demote-C3, " : "",
1154                 (msr & NHM_C1_AUTO_DEMOTE) ? "demote-C1, " : "",
1155                 (msr & (1 << 15)) ? "" : "UN",
1156                 (unsigned int)msr & 7,
1157                 pkg_cstate_limit_strings[pkg_cstate_limit]);
1158
1159         if (!do_nhm_turbo_ratio_limit)
1160                 return;
1161
1162         get_msr(0, MSR_NHM_TURBO_RATIO_LIMIT, &msr);
1163
1164         fprintf(stderr, "cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
1165
1166         ratio = (msr >> 56) & 0xFF;
1167         if (ratio)
1168                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 8 active cores\n",
1169                         ratio, bclk, ratio * bclk);
1170
1171         ratio = (msr >> 48) & 0xFF;
1172         if (ratio)
1173                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 7 active cores\n",
1174                         ratio, bclk, ratio * bclk);
1175
1176         ratio = (msr >> 40) & 0xFF;
1177         if (ratio)
1178                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 6 active cores\n",
1179                         ratio, bclk, ratio * bclk);
1180
1181         ratio = (msr >> 32) & 0xFF;
1182         if (ratio)
1183                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 5 active cores\n",
1184                         ratio, bclk, ratio * bclk);
1185
1186         ratio = (msr >> 24) & 0xFF;
1187         if (ratio)
1188                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
1189                         ratio, bclk, ratio * bclk);
1190
1191         ratio = (msr >> 16) & 0xFF;
1192         if (ratio)
1193                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
1194                         ratio, bclk, ratio * bclk);
1195
1196         ratio = (msr >> 8) & 0xFF;
1197         if (ratio)
1198                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
1199                         ratio, bclk, ratio * bclk);
1200
1201         ratio = (msr >> 0) & 0xFF;
1202         if (ratio)
1203                 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
1204                         ratio, bclk, ratio * bclk);
1205
1206 }
1207
1208 void free_all_buffers(void)
1209 {
1210         CPU_FREE(cpu_present_set);
1211         cpu_present_set = NULL;
1212         cpu_present_set = 0;
1213
1214         CPU_FREE(cpu_affinity_set);
1215         cpu_affinity_set = NULL;
1216         cpu_affinity_setsize = 0;
1217
1218         free(thread_even);
1219         free(core_even);
1220         free(package_even);
1221
1222         thread_even = NULL;
1223         core_even = NULL;
1224         package_even = NULL;
1225
1226         free(thread_odd);
1227         free(core_odd);
1228         free(package_odd);
1229
1230         thread_odd = NULL;
1231         core_odd = NULL;
1232         package_odd = NULL;
1233
1234         free(output_buffer);
1235         output_buffer = NULL;
1236         outp = NULL;
1237 }
1238
1239 /*
1240  * Open a file, and exit on failure
1241  */
1242 FILE *fopen_or_die(const char *path, const char *mode)
1243 {
1244         FILE *filep = fopen(path, "r");
1245         if (!filep)
1246                 err(1, "%s: open failed", path);
1247         return filep;
1248 }
1249
1250 /*
1251  * Parse a file containing a single int.
1252  */
1253 int parse_int_file(const char *fmt, ...)
1254 {
1255         va_list args;
1256         char path[PATH_MAX];
1257         FILE *filep;
1258         int value;
1259
1260         va_start(args, fmt);
1261         vsnprintf(path, sizeof(path), fmt, args);
1262         va_end(args);
1263         filep = fopen_or_die(path, "r");
1264         if (fscanf(filep, "%d", &value) != 1)
1265                 err(1, "%s: failed to parse number from file", path);
1266         fclose(filep);
1267         return value;
1268 }
1269
1270 /*
1271  * cpu_is_first_sibling_in_core(cpu)
1272  * return 1 if given CPU is 1st HT sibling in the core
1273  */
1274 int cpu_is_first_sibling_in_core(int cpu)
1275 {
1276         return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
1277 }
1278
1279 /*
1280  * cpu_is_first_core_in_package(cpu)
1281  * return 1 if given CPU is 1st core in package
1282  */
1283 int cpu_is_first_core_in_package(int cpu)
1284 {
1285         return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
1286 }
1287
1288 int get_physical_package_id(int cpu)
1289 {
1290         return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
1291 }
1292
1293 int get_core_id(int cpu)
1294 {
1295         return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
1296 }
1297
1298 int get_num_ht_siblings(int cpu)
1299 {
1300         char path[80];
1301         FILE *filep;
1302         int sib1, sib2;
1303         int matches;
1304         char character;
1305
1306         sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
1307         filep = fopen_or_die(path, "r");
1308         /*
1309          * file format:
1310          * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
1311          * otherwinse 1 sibling (self).
1312          */
1313         matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
1314
1315         fclose(filep);
1316
1317         if (matches == 3)
1318                 return 2;
1319         else
1320                 return 1;
1321 }
1322
1323 /*
1324  * run func(thread, core, package) in topology order
1325  * skip non-present cpus
1326  */
1327
1328 int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
1329         struct pkg_data *, struct thread_data *, struct core_data *,
1330         struct pkg_data *), struct thread_data *thread_base,
1331         struct core_data *core_base, struct pkg_data *pkg_base,
1332         struct thread_data *thread_base2, struct core_data *core_base2,
1333         struct pkg_data *pkg_base2)
1334 {
1335         int retval, pkg_no, core_no, thread_no;
1336
1337         for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
1338                 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
1339                         for (thread_no = 0; thread_no <
1340                                 topo.num_threads_per_core; ++thread_no) {
1341                                 struct thread_data *t, *t2;
1342                                 struct core_data *c, *c2;
1343                                 struct pkg_data *p, *p2;
1344
1345                                 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
1346
1347                                 if (cpu_is_not_present(t->cpu_id))
1348                                         continue;
1349
1350                                 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
1351
1352                                 c = GET_CORE(core_base, core_no, pkg_no);
1353                                 c2 = GET_CORE(core_base2, core_no, pkg_no);
1354
1355                                 p = GET_PKG(pkg_base, pkg_no);
1356                                 p2 = GET_PKG(pkg_base2, pkg_no);
1357
1358                                 retval = func(t, c, p, t2, c2, p2);
1359                                 if (retval)
1360                                         return retval;
1361                         }
1362                 }
1363         }
1364         return 0;
1365 }
1366
1367 /*
1368  * run func(cpu) on every cpu in /proc/stat
1369  * return max_cpu number
1370  */
1371 int for_all_proc_cpus(int (func)(int))
1372 {
1373         FILE *fp;
1374         int cpu_num;
1375         int retval;
1376
1377         fp = fopen_or_die(proc_stat, "r");
1378
1379         retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
1380         if (retval != 0)
1381                 err(1, "%s: failed to parse format", proc_stat);
1382
1383         while (1) {
1384                 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
1385                 if (retval != 1)
1386                         break;
1387
1388                 retval = func(cpu_num);
1389                 if (retval) {
1390                         fclose(fp);
1391                         return(retval);
1392                 }
1393         }
1394         fclose(fp);
1395         return 0;
1396 }
1397
1398 void re_initialize(void)
1399 {
1400         free_all_buffers();
1401         setup_all_buffers();
1402         printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
1403 }
1404
1405
1406 /*
1407  * count_cpus()
1408  * remember the last one seen, it will be the max
1409  */
1410 int count_cpus(int cpu)
1411 {
1412         if (topo.max_cpu_num < cpu)
1413                 topo.max_cpu_num = cpu;
1414
1415         topo.num_cpus += 1;
1416         return 0;
1417 }
1418 int mark_cpu_present(int cpu)
1419 {
1420         CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
1421         return 0;
1422 }
1423
1424 void turbostat_loop()
1425 {
1426         int retval;
1427         int restarted = 0;
1428
1429 restart:
1430         restarted++;
1431
1432         retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1433         if (retval < -1) {
1434                 exit(retval);
1435         } else if (retval == -1) {
1436                 if (restarted > 1) {
1437                         exit(retval);
1438                 }
1439                 re_initialize();
1440                 goto restart;
1441         }
1442         restarted = 0;
1443         gettimeofday(&tv_even, (struct timezone *)NULL);
1444
1445         while (1) {
1446                 if (for_all_proc_cpus(cpu_is_not_present)) {
1447                         re_initialize();
1448                         goto restart;
1449                 }
1450                 sleep(interval_sec);
1451                 retval = for_all_cpus(get_counters, ODD_COUNTERS);
1452                 if (retval < -1) {
1453                         exit(retval);
1454                 } else if (retval == -1) {
1455                         re_initialize();
1456                         goto restart;
1457                 }
1458                 gettimeofday(&tv_odd, (struct timezone *)NULL);
1459                 timersub(&tv_odd, &tv_even, &tv_delta);
1460                 for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
1461                 compute_average(EVEN_COUNTERS);
1462                 format_all_counters(EVEN_COUNTERS);
1463                 flush_stdout();
1464                 sleep(interval_sec);
1465                 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1466                 if (retval < -1) {
1467                         exit(retval);
1468                 } else if (retval == -1) {
1469                         re_initialize();
1470                         goto restart;
1471                 }
1472                 gettimeofday(&tv_even, (struct timezone *)NULL);
1473                 timersub(&tv_even, &tv_odd, &tv_delta);
1474                 for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
1475                 compute_average(ODD_COUNTERS);
1476                 format_all_counters(ODD_COUNTERS);
1477                 flush_stdout();
1478         }
1479 }
1480
1481 void check_dev_msr()
1482 {
1483         struct stat sb;
1484
1485         if (stat("/dev/cpu/0/msr", &sb))
1486                 err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" ");
1487 }
1488
1489 void check_permissions()
1490 {
1491         struct __user_cap_header_struct cap_header_data;
1492         cap_user_header_t cap_header = &cap_header_data;
1493         struct __user_cap_data_struct cap_data_data;
1494         cap_user_data_t cap_data = &cap_data_data;
1495         extern int capget(cap_user_header_t hdrp, cap_user_data_t datap);
1496         int do_exit = 0;
1497
1498         /* check for CAP_SYS_RAWIO */
1499         cap_header->pid = getpid();
1500         cap_header->version = _LINUX_CAPABILITY_VERSION;
1501         if (capget(cap_header, cap_data) < 0)
1502                 err(-6, "capget(2) failed");
1503
1504         if ((cap_data->effective & (1 << CAP_SYS_RAWIO)) == 0) {
1505                 do_exit++;
1506                 warnx("capget(CAP_SYS_RAWIO) failed,"
1507                         " try \"# setcap cap_sys_rawio=ep %s\"", progname);
1508         }
1509
1510         /* test file permissions */
1511         if (euidaccess("/dev/cpu/0/msr", R_OK)) {
1512                 do_exit++;
1513                 warn("/dev/cpu/0/msr open failed, try chown or chmod +r /dev/cpu/*/msr");
1514         }
1515
1516         /* if all else fails, thell them to be root */
1517         if (do_exit)
1518                 if (getuid() != 0)
1519                         warnx("... or simply run as root");
1520
1521         if (do_exit)
1522                 exit(-6);
1523 }
1524
1525 /*
1526  * NHM adds support for additional MSRs:
1527  *
1528  * MSR_SMI_COUNT                   0x00000034
1529  *
1530  * MSR_NHM_PLATFORM_INFO           0x000000ce
1531  * MSR_NHM_SNB_PKG_CST_CFG_CTL     0x000000e2
1532  *
1533  * MSR_PKG_C3_RESIDENCY            0x000003f8
1534  * MSR_PKG_C6_RESIDENCY            0x000003f9
1535  * MSR_CORE_C3_RESIDENCY           0x000003fc
1536  * MSR_CORE_C6_RESIDENCY           0x000003fd
1537  *
1538  * Side effect:
1539  * sets global pkg_cstate_limit to decode MSR_NHM_SNB_PKG_CST_CFG_CTL
1540  */
1541 int probe_nhm_msrs(unsigned int family, unsigned int model)
1542 {
1543         unsigned long long msr;
1544         int *pkg_cstate_limits;
1545
1546         if (!genuine_intel)
1547                 return 0;
1548
1549         if (family != 6)
1550                 return 0;
1551
1552         switch (model) {
1553         case 0x1A:      /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1554         case 0x1E:      /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1555         case 0x1F:      /* Core i7 and i5 Processor - Nehalem */
1556         case 0x25:      /* Westmere Client - Clarkdale, Arrandale */
1557         case 0x2C:      /* Westmere EP - Gulftown */
1558         case 0x2E:      /* Nehalem-EX Xeon - Beckton */
1559         case 0x2F:      /* Westmere-EX Xeon - Eagleton */
1560                 pkg_cstate_limits = nhm_pkg_cstate_limits;
1561                 break;
1562         case 0x2A:      /* SNB */
1563         case 0x2D:      /* SNB Xeon */
1564         case 0x3A:      /* IVB */
1565         case 0x3E:      /* IVB Xeon */
1566                 pkg_cstate_limits = snb_pkg_cstate_limits;
1567                 break;
1568         case 0x3C:      /* HSW */
1569         case 0x3F:      /* HSX */
1570         case 0x45:      /* HSW */
1571         case 0x46:      /* HSW */
1572         case 0x3D:      /* BDW */
1573         case 0x4F:      /* BDX */
1574         case 0x56:      /* BDX-DE */
1575                 pkg_cstate_limits = hsw_pkg_cstate_limits;
1576                 break;
1577         case 0x37:      /* BYT */
1578         case 0x4D:      /* AVN */
1579                 pkg_cstate_limits = slv_pkg_cstate_limits;
1580                 break;
1581         case 0x4C:      /* AMT */
1582                 pkg_cstate_limits = amt_pkg_cstate_limits;
1583                 break;
1584         case 0x57:      /* PHI */
1585                 pkg_cstate_limits = phi_pkg_cstate_limits;
1586                 break;
1587         default:
1588                 return 0;
1589         }
1590         get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
1591
1592         pkg_cstate_limit = pkg_cstate_limits[msr & 0x7];
1593
1594         return 1;
1595 }
1596 int has_nhm_turbo_ratio_limit(unsigned int family, unsigned int model)
1597 {
1598         switch (model) {
1599         /* Nehalem compatible, but do not include turbo-ratio limit support */
1600         case 0x2E:      /* Nehalem-EX Xeon - Beckton */
1601         case 0x2F:      /* Westmere-EX Xeon - Eagleton */
1602                 return 0;
1603         default:
1604                 return 1;
1605         }
1606 }
1607 int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model)
1608 {
1609         if (!genuine_intel)
1610                 return 0;
1611
1612         if (family != 6)
1613                 return 0;
1614
1615         switch (model) {
1616         case 0x3E:      /* IVB Xeon */
1617                 return 1;
1618         default:
1619                 return 0;
1620         }
1621 }
1622
1623 /*
1624  * print_epb()
1625  * Decode the ENERGY_PERF_BIAS MSR
1626  */
1627 int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1628 {
1629         unsigned long long msr;
1630         char *epb_string;
1631         int cpu;
1632
1633         if (!has_epb)
1634                 return 0;
1635
1636         cpu = t->cpu_id;
1637
1638         /* EPB is per-package */
1639         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1640                 return 0;
1641
1642         if (cpu_migrate(cpu)) {
1643                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
1644                 return -1;
1645         }
1646
1647         if (get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &msr))
1648                 return 0;
1649
1650         switch (msr & 0x7) {
1651         case ENERGY_PERF_BIAS_PERFORMANCE:
1652                 epb_string = "performance";
1653                 break;
1654         case ENERGY_PERF_BIAS_NORMAL:
1655                 epb_string = "balanced";
1656                 break;
1657         case ENERGY_PERF_BIAS_POWERSAVE:
1658                 epb_string = "powersave";
1659                 break;
1660         default:
1661                 epb_string = "custom";
1662                 break;
1663         }
1664         fprintf(stderr, "cpu%d: MSR_IA32_ENERGY_PERF_BIAS: 0x%08llx (%s)\n", cpu, msr, epb_string);
1665
1666         return 0;
1667 }
1668
1669 /*
1670  * print_perf_limit()
1671  */
1672 int print_perf_limit(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1673 {
1674         unsigned long long msr;
1675         int cpu;
1676
1677         cpu = t->cpu_id;
1678
1679         /* per-package */
1680         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1681                 return 0;
1682
1683         if (cpu_migrate(cpu)) {
1684                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
1685                 return -1;
1686         }
1687
1688         if (do_core_perf_limit_reasons) {
1689                 get_msr(cpu, MSR_CORE_PERF_LIMIT_REASONS, &msr);
1690                 fprintf(stderr, "cpu%d: MSR_CORE_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr);
1691                 fprintf(stderr, " (Active: %s%s%s%s%s%s%s%s%s%s%s%s%s%s)",
1692                         (msr & 1 << 0) ? "PROCHOT, " : "",
1693                         (msr & 1 << 1) ? "ThermStatus, " : "",
1694                         (msr & 1 << 2) ? "bit2, " : "",
1695                         (msr & 1 << 4) ? "Graphics, " : "",
1696                         (msr & 1 << 5) ? "Auto-HWP, " : "",
1697                         (msr & 1 << 6) ? "VR-Therm, " : "",
1698                         (msr & 1 << 8) ? "Amps, " : "",
1699                         (msr & 1 << 9) ? "CorePwr, " : "",
1700                         (msr & 1 << 10) ? "PkgPwrL1, " : "",
1701                         (msr & 1 << 11) ? "PkgPwrL2, " : "",
1702                         (msr & 1 << 12) ? "MultiCoreTurbo, " : "",
1703                         (msr & 1 << 13) ? "Transitions, " : "",
1704                         (msr & 1 << 14) ? "bit14, " : "",
1705                         (msr & 1 << 15) ? "bit15, " : "");
1706                 fprintf(stderr, " (Logged: %s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",
1707                         (msr & 1 << 16) ? "PROCHOT, " : "",
1708                         (msr & 1 << 17) ? "ThermStatus, " : "",
1709                         (msr & 1 << 18) ? "bit18, " : "",
1710                         (msr & 1 << 20) ? "Graphics, " : "",
1711                         (msr & 1 << 21) ? "Auto-HWP, " : "",
1712                         (msr & 1 << 22) ? "VR-Therm, " : "",
1713                         (msr & 1 << 24) ? "Amps, " : "",
1714                         (msr & 1 << 25) ? "CorePwr, " : "",
1715                         (msr & 1 << 26) ? "PkgPwrL1, " : "",
1716                         (msr & 1 << 27) ? "PkgPwrL2, " : "",
1717                         (msr & 1 << 28) ? "MultiCoreTurbo, " : "",
1718                         (msr & 1 << 29) ? "Transitions, " : "",
1719                         (msr & 1 << 30) ? "bit30, " : "",
1720                         (msr & 1 << 31) ? "bit31, " : "");
1721
1722         }
1723         if (do_gfx_perf_limit_reasons) {
1724                 get_msr(cpu, MSR_GFX_PERF_LIMIT_REASONS, &msr);
1725                 fprintf(stderr, "cpu%d: MSR_GFX_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr);
1726                 fprintf(stderr, " (Active: %s%s%s%s%s%s%s%s)",
1727                         (msr & 1 << 0) ? "PROCHOT, " : "",
1728                         (msr & 1 << 1) ? "ThermStatus, " : "",
1729                         (msr & 1 << 4) ? "Graphics, " : "",
1730                         (msr & 1 << 6) ? "VR-Therm, " : "",
1731                         (msr & 1 << 8) ? "Amps, " : "",
1732                         (msr & 1 << 9) ? "GFXPwr, " : "",
1733                         (msr & 1 << 10) ? "PkgPwrL1, " : "",
1734                         (msr & 1 << 11) ? "PkgPwrL2, " : "");
1735                 fprintf(stderr, " (Logged: %s%s%s%s%s%s%s%s)\n",
1736                         (msr & 1 << 16) ? "PROCHOT, " : "",
1737                         (msr & 1 << 17) ? "ThermStatus, " : "",
1738                         (msr & 1 << 20) ? "Graphics, " : "",
1739                         (msr & 1 << 22) ? "VR-Therm, " : "",
1740                         (msr & 1 << 24) ? "Amps, " : "",
1741                         (msr & 1 << 25) ? "GFXPwr, " : "",
1742                         (msr & 1 << 26) ? "PkgPwrL1, " : "",
1743                         (msr & 1 << 27) ? "PkgPwrL2, " : "");
1744         }
1745         if (do_ring_perf_limit_reasons) {
1746                 get_msr(cpu, MSR_RING_PERF_LIMIT_REASONS, &msr);
1747                 fprintf(stderr, "cpu%d: MSR_RING_PERF_LIMIT_REASONS, 0x%08llx", cpu, msr);
1748                 fprintf(stderr, " (Active: %s%s%s%s%s%s)",
1749                         (msr & 1 << 0) ? "PROCHOT, " : "",
1750                         (msr & 1 << 1) ? "ThermStatus, " : "",
1751                         (msr & 1 << 6) ? "VR-Therm, " : "",
1752                         (msr & 1 << 8) ? "Amps, " : "",
1753                         (msr & 1 << 10) ? "PkgPwrL1, " : "",
1754                         (msr & 1 << 11) ? "PkgPwrL2, " : "");
1755                 fprintf(stderr, " (Logged: %s%s%s%s%s%s)\n",
1756                         (msr & 1 << 16) ? "PROCHOT, " : "",
1757                         (msr & 1 << 17) ? "ThermStatus, " : "",
1758                         (msr & 1 << 22) ? "VR-Therm, " : "",
1759                         (msr & 1 << 24) ? "Amps, " : "",
1760                         (msr & 1 << 26) ? "PkgPwrL1, " : "",
1761                         (msr & 1 << 27) ? "PkgPwrL2, " : "");
1762         }
1763         return 0;
1764 }
1765
1766 #define RAPL_POWER_GRANULARITY  0x7FFF  /* 15 bit power granularity */
1767 #define RAPL_TIME_GRANULARITY   0x3F /* 6 bit time granularity */
1768
1769 double get_tdp(model)
1770 {
1771         unsigned long long msr;
1772
1773         if (do_rapl & RAPL_PKG_POWER_INFO)
1774                 if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
1775                         return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
1776
1777         switch (model) {
1778         case 0x37:
1779         case 0x4D:
1780                 return 30.0;
1781         default:
1782                 return 135.0;
1783         }
1784 }
1785
1786
1787 /*
1788  * rapl_probe()
1789  *
1790  * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
1791  */
1792 void rapl_probe(unsigned int family, unsigned int model)
1793 {
1794         unsigned long long msr;
1795         unsigned int time_unit;
1796         double tdp;
1797
1798         if (!genuine_intel)
1799                 return;
1800
1801         if (family != 6)
1802                 return;
1803
1804         switch (model) {
1805         case 0x2A:
1806         case 0x3A:
1807         case 0x3C:      /* HSW */
1808         case 0x45:      /* HSW */
1809         case 0x46:      /* HSW */
1810         case 0x3D:      /* BDW */
1811                 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
1812                 break;
1813         case 0x3F:      /* HSX */
1814         case 0x4F:      /* BDX */
1815         case 0x56:      /* BDX-DE */
1816                 do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
1817                 break;
1818         case 0x2D:
1819         case 0x3E:
1820                 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
1821                 break;
1822         case 0x37:      /* BYT */
1823         case 0x4D:      /* AVN */
1824                 do_rapl = RAPL_PKG | RAPL_CORES ;
1825                 break;
1826         default:
1827                 return;
1828         }
1829
1830         /* units on package 0, verify later other packages match */
1831         if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1832                 return;
1833
1834         rapl_power_units = 1.0 / (1 << (msr & 0xF));
1835         if (model == 0x37)
1836                 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1837         else
1838                 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1839
1840         time_unit = msr >> 16 & 0xF;
1841         if (time_unit == 0)
1842                 time_unit = 0xA;
1843
1844         rapl_time_units = 1.0 / (1 << (time_unit));
1845
1846         tdp = get_tdp(model);
1847
1848         rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
1849         if (debug)
1850                 fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
1851
1852         return;
1853 }
1854
1855 void perf_limit_reasons_probe(family, model)
1856 {
1857         if (!genuine_intel)
1858                 return;
1859
1860         if (family != 6)
1861                 return;
1862
1863         switch (model) {
1864         case 0x3C:      /* HSW */
1865         case 0x45:      /* HSW */
1866         case 0x46:      /* HSW */
1867                 do_gfx_perf_limit_reasons = 1;
1868         case 0x3F:      /* HSX */
1869                 do_core_perf_limit_reasons = 1;
1870                 do_ring_perf_limit_reasons = 1;
1871         default:
1872                 return;
1873         }
1874 }
1875
1876 int print_thermal(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1877 {
1878         unsigned long long msr;
1879         unsigned int dts;
1880         int cpu;
1881
1882         if (!(do_dts || do_ptm))
1883                 return 0;
1884
1885         cpu = t->cpu_id;
1886
1887         /* DTS is per-core, no need to print for each thread */
1888         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
1889                 return 0;
1890
1891         if (cpu_migrate(cpu)) {
1892                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
1893                 return -1;
1894         }
1895
1896         if (do_ptm && (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) {
1897                 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
1898                         return 0;
1899
1900                 dts = (msr >> 16) & 0x7F;
1901                 fprintf(stderr, "cpu%d: MSR_IA32_PACKAGE_THERM_STATUS: 0x%08llx (%d C)\n",
1902                         cpu, msr, tcc_activation_temp - dts);
1903
1904 #ifdef  THERM_DEBUG
1905                 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, &msr))
1906                         return 0;
1907
1908                 dts = (msr >> 16) & 0x7F;
1909                 dts2 = (msr >> 8) & 0x7F;
1910                 fprintf(stderr, "cpu%d: MSR_IA32_PACKAGE_THERM_INTERRUPT: 0x%08llx (%d C, %d C)\n",
1911                         cpu, msr, tcc_activation_temp - dts, tcc_activation_temp - dts2);
1912 #endif
1913         }
1914
1915
1916         if (do_dts) {
1917                 unsigned int resolution;
1918
1919                 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
1920                         return 0;
1921
1922                 dts = (msr >> 16) & 0x7F;
1923                 resolution = (msr >> 27) & 0xF;
1924                 fprintf(stderr, "cpu%d: MSR_IA32_THERM_STATUS: 0x%08llx (%d C +/- %d)\n",
1925                         cpu, msr, tcc_activation_temp - dts, resolution);
1926
1927 #ifdef THERM_DEBUG
1928                 if (get_msr(cpu, MSR_IA32_THERM_INTERRUPT, &msr))
1929                         return 0;
1930
1931                 dts = (msr >> 16) & 0x7F;
1932                 dts2 = (msr >> 8) & 0x7F;
1933                 fprintf(stderr, "cpu%d: MSR_IA32_THERM_INTERRUPT: 0x%08llx (%d C, %d C)\n",
1934                         cpu, msr, tcc_activation_temp - dts, tcc_activation_temp - dts2);
1935 #endif
1936         }
1937
1938         return 0;
1939 }
1940
1941 void print_power_limit_msr(int cpu, unsigned long long msr, char *label)
1942 {
1943         fprintf(stderr, "cpu%d: %s: %sabled (%f Watts, %f sec, clamp %sabled)\n",
1944                 cpu, label,
1945                 ((msr >> 15) & 1) ? "EN" : "DIS",
1946                 ((msr >> 0) & 0x7FFF) * rapl_power_units,
1947                 (1.0 + (((msr >> 22) & 0x3)/4.0)) * (1 << ((msr >> 17) & 0x1F)) * rapl_time_units,
1948                 (((msr >> 16) & 1) ? "EN" : "DIS"));
1949
1950         return;
1951 }
1952
1953 int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1954 {
1955         unsigned long long msr;
1956         int cpu;
1957
1958         if (!do_rapl)
1959                 return 0;
1960
1961         /* RAPL counters are per package, so print only for 1st thread/package */
1962         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1963                 return 0;
1964
1965         cpu = t->cpu_id;
1966         if (cpu_migrate(cpu)) {
1967                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
1968                 return -1;
1969         }
1970
1971         if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr))
1972                 return -1;
1973
1974         if (debug) {
1975                 fprintf(stderr, "cpu%d: MSR_RAPL_POWER_UNIT: 0x%08llx "
1976                         "(%f Watts, %f Joules, %f sec.)\n", cpu, msr,
1977                         rapl_power_units, rapl_energy_units, rapl_time_units);
1978         }
1979         if (do_rapl & RAPL_PKG_POWER_INFO) {
1980
1981                 if (get_msr(cpu, MSR_PKG_POWER_INFO, &msr))
1982                         return -5;
1983
1984
1985                 fprintf(stderr, "cpu%d: MSR_PKG_POWER_INFO: 0x%08llx (%.0f W TDP, RAPL %.0f - %.0f W, %f sec.)\n",
1986                         cpu, msr,
1987                         ((msr >>  0) & RAPL_POWER_GRANULARITY) * rapl_power_units,
1988                         ((msr >> 16) & RAPL_POWER_GRANULARITY) * rapl_power_units,
1989                         ((msr >> 32) & RAPL_POWER_GRANULARITY) * rapl_power_units,
1990                         ((msr >> 48) & RAPL_TIME_GRANULARITY) * rapl_time_units);
1991
1992         }
1993         if (do_rapl & RAPL_PKG) {
1994
1995                 if (get_msr(cpu, MSR_PKG_POWER_LIMIT, &msr))
1996                         return -9;
1997
1998                 fprintf(stderr, "cpu%d: MSR_PKG_POWER_LIMIT: 0x%08llx (%slocked)\n",
1999                         cpu, msr, (msr >> 63) & 1 ? "": "UN");
2000
2001                 print_power_limit_msr(cpu, msr, "PKG Limit #1");
2002                 fprintf(stderr, "cpu%d: PKG Limit #2: %sabled (%f Watts, %f* sec, clamp %sabled)\n",
2003                         cpu,
2004                         ((msr >> 47) & 1) ? "EN" : "DIS",
2005                         ((msr >> 32) & 0x7FFF) * rapl_power_units,
2006                         (1.0 + (((msr >> 54) & 0x3)/4.0)) * (1 << ((msr >> 49) & 0x1F)) * rapl_time_units,
2007                         ((msr >> 48) & 1) ? "EN" : "DIS");
2008         }
2009
2010         if (do_rapl & RAPL_DRAM) {
2011                 if (get_msr(cpu, MSR_DRAM_POWER_INFO, &msr))
2012                         return -6;
2013
2014
2015                 fprintf(stderr, "cpu%d: MSR_DRAM_POWER_INFO,: 0x%08llx (%.0f W TDP, RAPL %.0f - %.0f W, %f sec.)\n",
2016                         cpu, msr,
2017                         ((msr >>  0) & RAPL_POWER_GRANULARITY) * rapl_power_units,
2018                         ((msr >> 16) & RAPL_POWER_GRANULARITY) * rapl_power_units,
2019                         ((msr >> 32) & RAPL_POWER_GRANULARITY) * rapl_power_units,
2020                         ((msr >> 48) & RAPL_TIME_GRANULARITY) * rapl_time_units);
2021
2022
2023                 if (get_msr(cpu, MSR_DRAM_POWER_LIMIT, &msr))
2024                         return -9;
2025                 fprintf(stderr, "cpu%d: MSR_DRAM_POWER_LIMIT: 0x%08llx (%slocked)\n",
2026                                 cpu, msr, (msr >> 31) & 1 ? "": "UN");
2027
2028                 print_power_limit_msr(cpu, msr, "DRAM Limit");
2029         }
2030         if (do_rapl & RAPL_CORE_POLICY) {
2031                 if (debug) {
2032                         if (get_msr(cpu, MSR_PP0_POLICY, &msr))
2033                                 return -7;
2034
2035                         fprintf(stderr, "cpu%d: MSR_PP0_POLICY: %lld\n", cpu, msr & 0xF);
2036                 }
2037         }
2038         if (do_rapl & RAPL_CORES) {
2039                 if (debug) {
2040
2041                         if (get_msr(cpu, MSR_PP0_POWER_LIMIT, &msr))
2042                                 return -9;
2043                         fprintf(stderr, "cpu%d: MSR_PP0_POWER_LIMIT: 0x%08llx (%slocked)\n",
2044                                         cpu, msr, (msr >> 31) & 1 ? "": "UN");
2045                         print_power_limit_msr(cpu, msr, "Cores Limit");
2046                 }
2047         }
2048         if (do_rapl & RAPL_GFX) {
2049                 if (debug) {
2050                         if (get_msr(cpu, MSR_PP1_POLICY, &msr))
2051                                 return -8;
2052
2053                         fprintf(stderr, "cpu%d: MSR_PP1_POLICY: %lld\n", cpu, msr & 0xF);
2054
2055                         if (get_msr(cpu, MSR_PP1_POWER_LIMIT, &msr))
2056                                 return -9;
2057                         fprintf(stderr, "cpu%d: MSR_PP1_POWER_LIMIT: 0x%08llx (%slocked)\n",
2058                                         cpu, msr, (msr >> 31) & 1 ? "": "UN");
2059                         print_power_limit_msr(cpu, msr, "GFX Limit");
2060                 }
2061         }
2062         return 0;
2063 }
2064
2065 /*
2066  * SNB adds support for additional MSRs:
2067  *
2068  * MSR_PKG_C7_RESIDENCY            0x000003fa
2069  * MSR_CORE_C7_RESIDENCY           0x000003fe
2070  * MSR_PKG_C2_RESIDENCY            0x0000060d
2071  */
2072
2073 int has_snb_msrs(unsigned int family, unsigned int model)
2074 {
2075         if (!genuine_intel)
2076                 return 0;
2077
2078         switch (model) {
2079         case 0x2A:
2080         case 0x2D:
2081         case 0x3A:      /* IVB */
2082         case 0x3E:      /* IVB Xeon */
2083         case 0x3C:      /* HSW */
2084         case 0x3F:      /* HSW */
2085         case 0x45:      /* HSW */
2086         case 0x46:      /* HSW */
2087         case 0x3D:      /* BDW */
2088         case 0x4F:      /* BDX */
2089         case 0x56:      /* BDX-DE */
2090                 return 1;
2091         }
2092         return 0;
2093 }
2094
2095 /*
2096  * HSW adds support for additional MSRs:
2097  *
2098  * MSR_PKG_C8_RESIDENCY            0x00000630
2099  * MSR_PKG_C9_RESIDENCY            0x00000631
2100  * MSR_PKG_C10_RESIDENCY           0x00000632
2101  */
2102 int has_hsw_msrs(unsigned int family, unsigned int model)
2103 {
2104         if (!genuine_intel)
2105                 return 0;
2106
2107         switch (model) {
2108         case 0x45:      /* HSW */
2109         case 0x3D:      /* BDW */
2110                 return 1;
2111         }
2112         return 0;
2113 }
2114
2115
2116 int is_slm(unsigned int family, unsigned int model)
2117 {
2118         if (!genuine_intel)
2119                 return 0;
2120         switch (model) {
2121         case 0x37:      /* BYT */
2122         case 0x4D:      /* AVN */
2123                 return 1;
2124         }
2125         return 0;
2126 }
2127
2128 #define SLM_BCLK_FREQS 5
2129 double slm_freq_table[SLM_BCLK_FREQS] = { 83.3, 100.0, 133.3, 116.7, 80.0};
2130
2131 double slm_bclk(void)
2132 {
2133         unsigned long long msr = 3;
2134         unsigned int i;
2135         double freq;
2136
2137         if (get_msr(0, MSR_FSB_FREQ, &msr))
2138                 fprintf(stderr, "SLM BCLK: unknown\n");
2139
2140         i = msr & 0xf;
2141         if (i >= SLM_BCLK_FREQS) {
2142                 fprintf(stderr, "SLM BCLK[%d] invalid\n", i);
2143                 msr = 3;
2144         }
2145         freq = slm_freq_table[i];
2146
2147         fprintf(stderr, "SLM BCLK: %.1f Mhz\n", freq);
2148
2149         return freq;
2150 }
2151
2152 double discover_bclk(unsigned int family, unsigned int model)
2153 {
2154         if (has_snb_msrs(family, model))
2155                 return 100.00;
2156         else if (is_slm(family, model))
2157                 return slm_bclk();
2158         else
2159                 return 133.33;
2160 }
2161
2162 /*
2163  * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
2164  * the Thermal Control Circuit (TCC) activates.
2165  * This is usually equal to tjMax.
2166  *
2167  * Older processors do not have this MSR, so there we guess,
2168  * but also allow cmdline over-ride with -T.
2169  *
2170  * Several MSR temperature values are in units of degrees-C
2171  * below this value, including the Digital Thermal Sensor (DTS),
2172  * Package Thermal Management Sensor (PTM), and thermal event thresholds.
2173  */
2174 int set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
2175 {
2176         unsigned long long msr;
2177         unsigned int target_c_local;
2178         int cpu;
2179
2180         /* tcc_activation_temp is used only for dts or ptm */
2181         if (!(do_dts || do_ptm))
2182                 return 0;
2183
2184         /* this is a per-package concept */
2185         if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
2186                 return 0;
2187
2188         cpu = t->cpu_id;
2189         if (cpu_migrate(cpu)) {
2190                 fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
2191                 return -1;
2192         }
2193
2194         if (tcc_activation_temp_override != 0) {
2195                 tcc_activation_temp = tcc_activation_temp_override;
2196                 fprintf(stderr, "cpu%d: Using cmdline TCC Target (%d C)\n",
2197                         cpu, tcc_activation_temp);
2198                 return 0;
2199         }
2200
2201         /* Temperature Target MSR is Nehalem and newer only */
2202         if (!do_nhm_platform_info)
2203                 goto guess;
2204
2205         if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
2206                 goto guess;
2207
2208         target_c_local = (msr >> 16) & 0xFF;
2209
2210         if (debug)
2211                 fprintf(stderr, "cpu%d: MSR_IA32_TEMPERATURE_TARGET: 0x%08llx (%d C)\n",
2212                         cpu, msr, target_c_local);
2213
2214         if (!target_c_local)
2215                 goto guess;
2216
2217         tcc_activation_temp = target_c_local;
2218
2219         return 0;
2220
2221 guess:
2222         tcc_activation_temp = TJMAX_DEFAULT;
2223         fprintf(stderr, "cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
2224                 cpu, tcc_activation_temp);
2225
2226         return 0;
2227 }
2228 void check_cpuid()
2229 {
2230         unsigned int eax, ebx, ecx, edx, max_level;
2231         unsigned int fms, family, model, stepping;
2232
2233         eax = ebx = ecx = edx = 0;
2234
2235         __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
2236
2237         if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
2238                 genuine_intel = 1;
2239
2240         if (debug)
2241                 fprintf(stderr, "CPUID(0): %.4s%.4s%.4s ",
2242                         (char *)&ebx, (char *)&edx, (char *)&ecx);
2243
2244         __get_cpuid(1, &fms, &ebx, &ecx, &edx);
2245         family = (fms >> 8) & 0xf;
2246         model = (fms >> 4) & 0xf;
2247         stepping = fms & 0xf;
2248         if (family == 6 || family == 0xf)
2249                 model += ((fms >> 16) & 0xf) << 4;
2250
2251         if (debug)
2252                 fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
2253                         max_level, family, model, stepping, family, model, stepping);
2254
2255         if (!(edx & (1 << 5)))
2256                 errx(1, "CPUID: no MSR");
2257
2258         /*
2259          * check max extended function levels of CPUID.
2260          * This is needed to check for invariant TSC.
2261          * This check is valid for both Intel and AMD.
2262          */
2263         ebx = ecx = edx = 0;
2264         __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
2265
2266         if (max_level >= 0x80000007) {
2267
2268                 /*
2269                  * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
2270                  * this check is valid for both Intel and AMD
2271                  */
2272                 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
2273                 has_invariant_tsc = edx & (1 << 8);
2274         }
2275
2276         /*
2277          * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
2278          * this check is valid for both Intel and AMD
2279          */
2280
2281         __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
2282         has_aperf = ecx & (1 << 0);
2283         do_dts = eax & (1 << 0);
2284         do_ptm = eax & (1 << 6);
2285         has_epb = ecx & (1 << 3);
2286
2287         if (debug)
2288                 fprintf(stderr, "CPUID(6): %sAPERF, %sDTS, %sPTM, %sEPB\n",
2289                         has_aperf ? "" : "No ",
2290                         do_dts ? "" : "No ",
2291                         do_ptm ? "" : "No ",
2292                         has_epb ? "" : "No ");
2293
2294         do_nhm_platform_info = do_nhm_cstates = do_smi = probe_nhm_msrs(family, model);
2295         do_snb_cstates = has_snb_msrs(family, model);
2296         do_pc2 = do_snb_cstates && (pkg_cstate_limit >= PCL__2);
2297         do_pc3 = (pkg_cstate_limit >= PCL__3);
2298         do_pc6 = (pkg_cstate_limit >= PCL__6);
2299         do_pc7 = do_snb_cstates && (pkg_cstate_limit >= PCL__7);
2300         do_c8_c9_c10 = has_hsw_msrs(family, model);
2301         do_slm_cstates = is_slm(family, model);
2302         bclk = discover_bclk(family, model);
2303
2304         do_nhm_turbo_ratio_limit = do_nhm_platform_info && has_nhm_turbo_ratio_limit(family, model);
2305         do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);
2306         rapl_probe(family, model);
2307         perf_limit_reasons_probe(family, model);
2308
2309         return;
2310 }
2311
2312
2313 void help()
2314 {
2315         fprintf(stderr,
2316         "Usage: turbostat [OPTIONS][(--interval seconds) | COMMAND ...]\n"
2317         "\n"
2318         "Turbostat forks the specified COMMAND and prints statistics\n"
2319         "when COMMAND completes.\n"
2320         "If no COMMAND is specified, turbostat wakes every 5-seconds\n"
2321         "to print statistics, until interrupted.\n"
2322         "--debug        run in \"debug\" mode\n"
2323         "--interval sec Override default 5-second measurement interval\n"
2324         "--help         print this help message\n"
2325         "--counter msr  print 32-bit counter at address \"msr\"\n"
2326         "--Counter msr  print 64-bit Counter at address \"msr\"\n"
2327         "--msr msr      print 32-bit value at address \"msr\"\n"
2328         "--MSR msr      print 64-bit Value at address \"msr\"\n"
2329         "--version      print version information\n"
2330         "\n"
2331         "For more help, run \"man turbostat\"\n");
2332 }
2333
2334
2335 /*
2336  * in /dev/cpu/ return success for names that are numbers
2337  * ie. filter out ".", "..", "microcode".
2338  */
2339 int dir_filter(const struct dirent *dirp)
2340 {
2341         if (isdigit(dirp->d_name[0]))
2342                 return 1;
2343         else
2344                 return 0;
2345 }
2346
2347 int open_dev_cpu_msr(int dummy1)
2348 {
2349         return 0;
2350 }
2351
2352 void topology_probe()
2353 {
2354         int i;
2355         int max_core_id = 0;
2356         int max_package_id = 0;
2357         int max_siblings = 0;
2358         struct cpu_topology {
2359                 int core_id;
2360                 int physical_package_id;
2361         } *cpus;
2362
2363         /* Initialize num_cpus, max_cpu_num */
2364         topo.num_cpus = 0;
2365         topo.max_cpu_num = 0;
2366         for_all_proc_cpus(count_cpus);
2367         if (!summary_only && topo.num_cpus > 1)
2368                 show_cpu = 1;
2369
2370         if (debug > 1)
2371                 fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
2372
2373         cpus = calloc(1, (topo.max_cpu_num  + 1) * sizeof(struct cpu_topology));
2374         if (cpus == NULL)
2375                 err(1, "calloc cpus");
2376
2377         /*
2378          * Allocate and initialize cpu_present_set
2379          */
2380         cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
2381         if (cpu_present_set == NULL)
2382                 err(3, "CPU_ALLOC");
2383         cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
2384         CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
2385         for_all_proc_cpus(mark_cpu_present);
2386
2387         /*
2388          * Allocate and initialize cpu_affinity_set
2389          */
2390         cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
2391         if (cpu_affinity_set == NULL)
2392                 err(3, "CPU_ALLOC");
2393         cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
2394         CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
2395
2396
2397         /*
2398          * For online cpus
2399          * find max_core_id, max_package_id
2400          */
2401         for (i = 0; i <= topo.max_cpu_num; ++i) {
2402                 int siblings;
2403
2404                 if (cpu_is_not_present(i)) {
2405                         if (debug > 1)
2406                                 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
2407                         continue;
2408                 }
2409                 cpus[i].core_id = get_core_id(i);
2410                 if (cpus[i].core_id > max_core_id)
2411                         max_core_id = cpus[i].core_id;
2412
2413                 cpus[i].physical_package_id = get_physical_package_id(i);
2414                 if (cpus[i].physical_package_id > max_package_id)
2415                         max_package_id = cpus[i].physical_package_id;
2416
2417                 siblings = get_num_ht_siblings(i);
2418                 if (siblings > max_siblings)
2419                         max_siblings = siblings;
2420                 if (debug > 1)
2421                         fprintf(stderr, "cpu %d pkg %d core %d\n",
2422                                 i, cpus[i].physical_package_id, cpus[i].core_id);
2423         }
2424         topo.num_cores_per_pkg = max_core_id + 1;
2425         if (debug > 1)
2426                 fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
2427                         max_core_id, topo.num_cores_per_pkg);
2428         if (!summary_only && topo.num_cores_per_pkg > 1)
2429                 show_core = 1;
2430
2431         topo.num_packages = max_package_id + 1;
2432         if (debug > 1)
2433                 fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
2434                         max_package_id, topo.num_packages);
2435         if (!summary_only && topo.num_packages > 1)
2436                 show_pkg = 1;
2437
2438         topo.num_threads_per_core = max_siblings;
2439         if (debug > 1)
2440                 fprintf(stderr, "max_siblings %d\n", max_siblings);
2441
2442         free(cpus);
2443 }
2444
2445 void
2446 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
2447 {
2448         int i;
2449
2450         *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
2451                 topo.num_packages, sizeof(struct thread_data));
2452         if (*t == NULL)
2453                 goto error;
2454
2455         for (i = 0; i < topo.num_threads_per_core *
2456                 topo.num_cores_per_pkg * topo.num_packages; i++)
2457                 (*t)[i].cpu_id = -1;
2458
2459         *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
2460                 sizeof(struct core_data));
2461         if (*c == NULL)
2462                 goto error;
2463
2464         for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
2465                 (*c)[i].core_id = -1;
2466
2467         *p = calloc(topo.num_packages, sizeof(struct pkg_data));
2468         if (*p == NULL)
2469                 goto error;
2470
2471         for (i = 0; i < topo.num_packages; i++)
2472                 (*p)[i].package_id = i;
2473
2474         return;
2475 error:
2476         err(1, "calloc counters");
2477 }
2478 /*
2479  * init_counter()
2480  *
2481  * set cpu_id, core_num, pkg_num
2482  * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
2483  *
2484  * increment topo.num_cores when 1st core in pkg seen
2485  */
2486 void init_counter(struct thread_data *thread_base, struct core_data *core_base,
2487         struct pkg_data *pkg_base, int thread_num, int core_num,
2488         int pkg_num, int cpu_id)
2489 {
2490         struct thread_data *t;
2491         struct core_data *c;
2492         struct pkg_data *p;
2493
2494         t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
2495         c = GET_CORE(core_base, core_num, pkg_num);
2496         p = GET_PKG(pkg_base, pkg_num);
2497
2498         t->cpu_id = cpu_id;
2499         if (thread_num == 0) {
2500                 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
2501                 if (cpu_is_first_core_in_package(cpu_id))
2502                         t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
2503         }
2504
2505         c->core_id = core_num;
2506         p->package_id = pkg_num;
2507 }
2508
2509
2510 int initialize_counters(int cpu_id)
2511 {
2512         int my_thread_id, my_core_id, my_package_id;
2513
2514         my_package_id = get_physical_package_id(cpu_id);
2515         my_core_id = get_core_id(cpu_id);
2516
2517         if (cpu_is_first_sibling_in_core(cpu_id)) {
2518                 my_thread_id = 0;
2519                 topo.num_cores++;
2520         } else {
2521                 my_thread_id = 1;
2522         }
2523
2524         init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
2525         init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
2526         return 0;
2527 }
2528
2529 void allocate_output_buffer()
2530 {
2531         output_buffer = calloc(1, (1 + topo.num_cpus) * 1024);
2532         outp = output_buffer;
2533         if (outp == NULL)
2534                 err(-1, "calloc output buffer");
2535 }
2536
2537 void setup_all_buffers(void)
2538 {
2539         topology_probe();
2540         allocate_counters(&thread_even, &core_even, &package_even);
2541         allocate_counters(&thread_odd, &core_odd, &package_odd);
2542         allocate_output_buffer();
2543         for_all_proc_cpus(initialize_counters);
2544 }
2545
2546 void turbostat_init()
2547 {
2548         check_dev_msr();
2549         check_permissions();
2550         check_cpuid();
2551
2552         setup_all_buffers();
2553
2554         if (debug)
2555                 print_verbose_header();
2556
2557         if (debug)
2558                 for_all_cpus(print_epb, ODD_COUNTERS);
2559
2560         if (debug)
2561                 for_all_cpus(print_perf_limit, ODD_COUNTERS);
2562
2563         if (debug)
2564                 for_all_cpus(print_rapl, ODD_COUNTERS);
2565
2566         for_all_cpus(set_temperature_target, ODD_COUNTERS);
2567
2568         if (debug)
2569                 for_all_cpus(print_thermal, ODD_COUNTERS);
2570 }
2571
2572 int fork_it(char **argv)
2573 {
2574         pid_t child_pid;
2575         int status;
2576
2577         status = for_all_cpus(get_counters, EVEN_COUNTERS);
2578         if (status)
2579                 exit(status);
2580         /* clear affinity side-effect of get_counters() */
2581         sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
2582         gettimeofday(&tv_even, (struct timezone *)NULL);
2583
2584         child_pid = fork();
2585         if (!child_pid) {
2586                 /* child */
2587                 execvp(argv[0], argv);
2588         } else {
2589
2590                 /* parent */
2591                 if (child_pid == -1)
2592                         err(1, "fork");
2593
2594                 signal(SIGINT, SIG_IGN);
2595                 signal(SIGQUIT, SIG_IGN);
2596                 if (waitpid(child_pid, &status, 0) == -1)
2597                         err(status, "waitpid");
2598         }
2599         /*
2600          * n.b. fork_it() does not check for errors from for_all_cpus()
2601          * because re-starting is problematic when forking
2602          */
2603         for_all_cpus(get_counters, ODD_COUNTERS);
2604         gettimeofday(&tv_odd, (struct timezone *)NULL);
2605         timersub(&tv_odd, &tv_even, &tv_delta);
2606         for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
2607         compute_average(EVEN_COUNTERS);
2608         format_all_counters(EVEN_COUNTERS);
2609         flush_stderr();
2610
2611         fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
2612
2613         return status;
2614 }
2615
2616 int get_and_dump_counters(void)
2617 {
2618         int status;
2619
2620         status = for_all_cpus(get_counters, ODD_COUNTERS);
2621         if (status)
2622                 return status;
2623
2624         status = for_all_cpus(dump_counters, ODD_COUNTERS);
2625         if (status)
2626                 return status;
2627
2628         flush_stdout();
2629
2630         return status;
2631 }
2632
2633 void print_version() {
2634         fprintf(stderr, "turbostat version 4.0 10-Feb, 2015"
2635                 " - Len Brown <lenb@kernel.org>\n");
2636 }
2637
2638 void cmdline(int argc, char **argv)
2639 {
2640         int opt;
2641         int option_index = 0;
2642         static struct option long_options[] = {
2643                 {"Counter",     required_argument,      0, 'C'},
2644                 {"counter",     required_argument,      0, 'c'},
2645                 {"Dump",        no_argument,            0, 'D'},
2646                 {"debug",       no_argument,            0, 'd'},
2647                 {"interval",    required_argument,      0, 'i'},
2648                 {"help",        no_argument,            0, 'h'},
2649                 {"Joules",      no_argument,            0, 'J'},
2650                 {"MSR",         required_argument,      0, 'M'},
2651                 {"msr",         required_argument,      0, 'm'},
2652                 {"Package",     no_argument,            0, 'p'},
2653                 {"processor",   no_argument,            0, 'p'},
2654                 {"Summary",     no_argument,            0, 'S'},
2655                 {"TCC",         required_argument,      0, 'T'},
2656                 {"version",     no_argument,            0, 'v' },
2657                 {0,             0,                      0,  0 }
2658         };
2659
2660         progname = argv[0];
2661
2662         while ((opt = getopt_long_only(argc, argv, "C:c:Ddhi:JM:m:PpST:v",
2663                                 long_options, &option_index)) != -1) {
2664                 switch (opt) {
2665                 case 'C':
2666                         sscanf(optarg, "%x", &extra_delta_offset64);
2667                         break;
2668                 case 'c':
2669                         sscanf(optarg, "%x", &extra_delta_offset32);
2670                         break;
2671                 case 'D':
2672                         dump_only++;
2673                         break;
2674                 case 'd':
2675                         debug++;
2676                         break;
2677                 case 'h':
2678                 default:
2679                         help();
2680                         exit(1);
2681                 case 'i':
2682                         interval_sec = atoi(optarg);
2683                         break;
2684                 case 'J':
2685                         rapl_joules++;
2686                         break;
2687                 case 'M':
2688                         sscanf(optarg, "%x", &extra_msr_offset64);
2689                         break;
2690                 case 'm':
2691                         sscanf(optarg, "%x", &extra_msr_offset32);
2692                         break;
2693                 case 'P':
2694                         show_pkg_only++;
2695                         break;
2696                 case 'p':
2697                         show_core_only++;
2698                         break;
2699                 case 'S':
2700                         summary_only++;
2701                         break;
2702                 case 'T':
2703                         tcc_activation_temp_override = atoi(optarg);
2704                         break;
2705                 case 'v':
2706                         print_version();
2707                         exit(0);
2708                         break;
2709                 }
2710         }
2711 }
2712
2713 int main(int argc, char **argv)
2714 {
2715         cmdline(argc, argv);
2716
2717         if (debug)
2718                 print_version();
2719
2720         turbostat_init();
2721
2722         /* dump counters and exit */
2723         if (dump_only)
2724                 return get_and_dump_counters();
2725
2726         /*
2727          * if any params left, it must be a command to fork
2728          */
2729         if (argc - optind)
2730                 return fork_it(argv + optind);
2731         else
2732                 turbostat_loop();
2733
2734         return 0;
2735 }