1 /*
2 * turbostat -- Log CPU frequency and C-state residency
3 * on modern Intel turbo-capable processors for collectd.
4 *
5 * Based on the 'turbostat' tool of the Linux kernel, found at
6 * linux/tools/power/x86/turbostat/turbostat.c:
7 * ----
8 * Copyright (c) 2013 Intel Corporation.
9 * Len Brown <len.brown@intel.com>
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms and conditions of the GNU General Public License,
13 * version 2, as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * more details.
19 *
20 * You should have received a copy of the GNU General Public License along with
21 * this program; if not, write to the Free Software Foundation, Inc.,
22 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
23 * ----
24 * Ported to collectd by Vincent Brillault <git@lerya.net>
25 */
27 #define _GNU_SOURCE
28 #include <asm/msr-index.h>
29 #include <stdarg.h>
30 #include <stdio.h>
31 #include <stdbool.h>
32 #include <err.h>
33 #include <unistd.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <sys/stat.h>
37 #include <sys/resource.h>
38 #include <fcntl.h>
39 #include <signal.h>
40 #include <sys/time.h>
41 #include <stdlib.h>
42 #include <dirent.h>
43 #include <string.h>
44 #include <ctype.h>
45 #include <sched.h>
46 #include <cpuid.h>
48 #include "collectd.h"
49 #include "common.h"
50 #include "plugin.h"
52 #define PLUGIN_NAME "turbostat"
54 static const char *proc_stat = "/proc/stat";
55 static unsigned int interval_sec = 5; /* set with -i interval_sec */
56 static unsigned int skip_c0;
57 static unsigned int skip_c1;
58 static unsigned int do_nhm_cstates;
59 static unsigned int do_snb_cstates;
60 static unsigned int do_c8_c9_c10;
61 static unsigned int do_slm_cstates;
62 static unsigned int has_aperf;
63 static unsigned int has_epb;
64 static unsigned int units = 1000000000; /* Ghz etc */
65 static unsigned int genuine_intel;
66 static unsigned int has_invariant_tsc;
67 static unsigned int do_nehalem_platform_info;
68 static int do_smi;
69 static unsigned int show_pkg;
70 static unsigned int show_core;
71 static unsigned int show_cpu;
72 static unsigned int do_rapl;
73 static unsigned int do_dts;
74 static unsigned int do_ptm;
75 static unsigned int tcc_activation_temp;
76 static unsigned int tcc_activation_temp_override;
77 static double rapl_power_units, rapl_energy_units, rapl_time_units;
78 static double rapl_joule_counter_range;
80 #define RAPL_PKG (1 << 0)
81 /* 0x610 MSR_PKG_POWER_LIMIT */
82 /* 0x611 MSR_PKG_ENERGY_STATUS */
83 #define RAPL_PKG_PERF_STATUS (1 << 1)
84 /* 0x613 MSR_PKG_PERF_STATUS */
85 #define RAPL_PKG_POWER_INFO (1 << 2)
86 /* 0x614 MSR_PKG_POWER_INFO */
88 #define RAPL_DRAM (1 << 3)
89 /* 0x618 MSR_DRAM_POWER_LIMIT */
90 /* 0x619 MSR_DRAM_ENERGY_STATUS */
91 /* 0x61c MSR_DRAM_POWER_INFO */
92 #define RAPL_DRAM_PERF_STATUS (1 << 4)
93 /* 0x61b MSR_DRAM_PERF_STATUS */
95 #define RAPL_CORES (1 << 5)
96 /* 0x638 MSR_PP0_POWER_LIMIT */
97 /* 0x639 MSR_PP0_ENERGY_STATUS */
98 #define RAPL_CORE_POLICY (1 << 6)
99 /* 0x63a MSR_PP0_POLICY */
102 #define RAPL_GFX (1 << 7)
103 /* 0x640 MSR_PP1_POWER_LIMIT */
104 /* 0x641 MSR_PP1_ENERGY_STATUS */
105 /* 0x642 MSR_PP1_POLICY */
106 #define TJMAX_DEFAULT 100
108 int aperf_mperf_unstable;
109 int backwards_count;
110 char *progname;
112 cpu_set_t *cpu_present_set, *cpu_affinity_set;
113 size_t cpu_present_setsize, cpu_affinity_setsize;
115 struct thread_data {
116 unsigned long long tsc;
117 unsigned long long aperf;
118 unsigned long long mperf;
119 unsigned long long c1;
120 unsigned int smi_count;
121 unsigned int cpu_id;
122 unsigned int flags;
123 #define CPU_IS_FIRST_THREAD_IN_CORE 0x2
124 #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
125 } *thread_even, *thread_odd;
127 struct core_data {
128 unsigned long long c3;
129 unsigned long long c6;
130 unsigned long long c7;
131 unsigned int core_temp_c;
132 unsigned int core_id;
133 } *core_even, *core_odd;
135 struct pkg_data {
136 unsigned long long pc2;
137 unsigned long long pc3;
138 unsigned long long pc6;
139 unsigned long long pc7;
140 unsigned long long pc8;
141 unsigned long long pc9;
142 unsigned long long pc10;
143 unsigned int package_id;
144 unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
145 unsigned int energy_dram; /* MSR_DRAM_ENERGY_STATUS */
146 unsigned int energy_cores; /* MSR_PP0_ENERGY_STATUS */
147 unsigned int energy_gfx; /* MSR_PP1_ENERGY_STATUS */
148 unsigned int rapl_pkg_perf_status; /* MSR_PKG_PERF_STATUS */
149 unsigned int rapl_dram_perf_status; /* MSR_DRAM_PERF_STATUS */
150 unsigned int pkg_temp_c;
152 } *package_even, *package_odd;
154 #define ODD_COUNTERS thread_odd, core_odd, package_odd
155 #define EVEN_COUNTERS thread_even, core_even, package_even
156 static bool is_even = true;
158 static bool allocated = false;
159 static bool initialized = false;
161 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
162 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
163 topo.num_threads_per_core + \
164 (core_no) * topo.num_threads_per_core + (thread_no))
165 #define GET_CORE(core_base, core_no, pkg_no) \
166 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
167 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
169 struct topo_params {
170 int num_packages;
171 int num_cpus;
172 int num_cores;
173 int max_cpu_num;
174 int num_cores_per_pkg;
175 int num_threads_per_core;
176 } topo;
178 struct timeval tv_even, tv_odd, tv_delta;
180 enum return_values {
181 OK = 0,
182 ERR_CPU_MIGRATE,
183 ERR_MSR_IA32_APERF,
184 ERR_MSR_IA32_MPERF,
185 ERR_MSR_SMI_COUNT,
186 ERR_MSR_CORE_C3_RESIDENCY,
187 ERR_MSR_CORE_C6_RESIDENCY,
188 ERR_MSR_CORE_C7_RESIDENCY,
189 ERR_MSR_IA32_THERM_STATUS,
190 ERR_MSR_PKG_C3_RESIDENCY,
191 ERR_MSR_PKG_C6_RESIDENCY,
192 ERR_MSR_PKG_C2_RESIDENCY,
193 ERR_MSR_PKG_C7_RESIDENCY,
194 ERR_MSR_PKG_C8_RESIDENCY,
195 ERR_MSR_PKG_C9_RESIDENCY,
196 ERR_MSR_PKG_C10_RESIDENCY,
197 ERR_MSR_PKG_ENERGY_STATUS,
198 ERR_MSR_PP0_ENERGY_STATUS,
199 ERR_MSR_DRAM_ENERGY_STATUS,
200 ERR_MSR_PP1_ENERGY_STATUS,
201 ERR_MSR_PKG_PERF_STATUS,
202 ERR_MSR_DRAM_PERF_STATUS,
203 ERR_MSR_IA32_PACKAGE_THERM_STATUS,
204 ERR_CPU_NOT_PRESENT,
205 ERR_NO_MSR,
206 ERR_CANT_OPEN_FILE,
207 ERR_CANT_READ_NUMBER,
208 ERR_CANT_READ_PROC_STAT,
209 ERR_NO_INVARIANT_TSC,
210 ERR_NO_APERF,
211 ERR_CALLOC,
212 ERR_CPU_ALLOC,
213 ERR_NOT_ROOT,
214 };
216 #define __must_check __attribute__((warn_unused_result))
218 static int setup_all_buffers(void);
220 static int
221 cpu_is_not_present(int cpu)
222 {
223 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
224 }
225 /*
226 * run func(thread, core, package) in topology order
227 * skip non-present cpus
228 */
230 static int __must_check
231 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
232 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
233 {
234 int retval, pkg_no, core_no, thread_no;
236 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
237 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
238 for (thread_no = 0; thread_no <
239 topo.num_threads_per_core; ++thread_no) {
240 struct thread_data *t;
241 struct core_data *c;
242 struct pkg_data *p;
244 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
246 if (cpu_is_not_present(t->cpu_id))
247 continue;
249 c = GET_CORE(core_base, core_no, pkg_no);
250 p = GET_PKG(pkg_base, pkg_no);
252 retval = func(t, c, p);
253 if (retval)
254 return retval;
255 }
256 }
257 }
258 return 0;
259 }
261 static int __must_check
262 cpu_migrate(int cpu)
263 {
264 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
265 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
266 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
267 return -ERR_CPU_MIGRATE;
268 else
269 return 0;
270 }
272 static int __must_check
273 get_msr(int cpu, off_t offset, unsigned long long *msr)
274 {
275 ssize_t retval;
276 char pathname[32];
277 int fd;
279 sprintf(pathname, "/dev/cpu/%d/msr", cpu);
280 fd = open(pathname, O_RDONLY);
281 if (fd < 0)
282 return -1;
284 retval = pread(fd, msr, sizeof *msr, offset);
285 close(fd);
287 if (retval != sizeof *msr) {
288 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
289 return -1;
290 }
292 return 0;
293 }
295 #define DELTA_WRAP32(new, old) \
296 if (new > old) { \
297 old = new - old; \
298 } else { \
299 old = 0x100000000 + new - old; \
300 }
302 static void
303 delta_package(struct pkg_data *new, struct pkg_data *old)
304 {
305 old->pc2 = new->pc2 - old->pc2;
306 old->pc3 = new->pc3 - old->pc3;
307 old->pc6 = new->pc6 - old->pc6;
308 old->pc7 = new->pc7 - old->pc7;
309 old->pc8 = new->pc8 - old->pc8;
310 old->pc9 = new->pc9 - old->pc9;
311 old->pc10 = new->pc10 - old->pc10;
312 old->pkg_temp_c = new->pkg_temp_c;
314 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
315 DELTA_WRAP32(new->energy_cores, old->energy_cores);
316 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
317 DELTA_WRAP32(new->energy_dram, old->energy_dram);
318 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
319 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
320 }
322 static void
323 delta_core(struct core_data *new, struct core_data *old)
324 {
325 old->c3 = new->c3 - old->c3;
326 old->c6 = new->c6 - old->c6;
327 old->c7 = new->c7 - old->c7;
328 old->core_temp_c = new->core_temp_c;
329 }
331 /*
332 * old = new - old
333 */
334 static int __must_check
335 delta_thread(struct thread_data *new, struct thread_data *old,
336 struct core_data *core_delta)
337 {
338 old->tsc = new->tsc - old->tsc;
340 /* check for TSC < 1 Mcycles over interval */
341 if (old->tsc < (1000 * 1000)) {
342 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
343 "You can disable all c-states by booting with \"idle=poll\"\n"
344 "or just the deep ones with \"processor.max_cstate=1\"");
345 return -1;
346 }
348 old->c1 = new->c1 - old->c1;
350 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
351 old->aperf = new->aperf - old->aperf;
352 old->mperf = new->mperf - old->mperf;
353 } else {
355 if (!aperf_mperf_unstable) {
356 WARNING("%s: APERF or MPERF went backwards *\n", progname);
357 WARNING("* Frequency results do not cover entire interval *\n");
358 WARNING("* fix this by running Linux-2.6.30 or later *\n");
360 aperf_mperf_unstable = 1;
361 }
362 /*
363 * mperf delta is likely a huge "positive" number
364 * can not use it for calculating c0 time
365 */
366 skip_c0 = 1;
367 skip_c1 = 1;
368 }
371 /*
372 * As counter collection is not atomic,
373 * it is possible for mperf's non-halted cycles + idle states
374 * to exceed TSC's all cycles: show c1 = 0% in that case.
375 */
376 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
377 old->c1 = 0;
378 else {
379 /* normal case, derive c1 */
380 old->c1 = old->tsc - old->mperf - core_delta->c3
381 - core_delta->c6 - core_delta->c7;
382 }
384 if (old->mperf == 0) {
385 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
386 old->mperf = 1; /* divide by 0 protection */
387 }
389 if (do_smi)
390 old->smi_count = new->smi_count - old->smi_count;
392 return 0;
393 }
395 static int __must_check
396 delta_cpu(struct thread_data *t, struct core_data *c,
397 struct pkg_data *p, struct thread_data *t2,
398 struct core_data *c2, struct pkg_data *p2)
399 {
400 int ret;
402 /* calculate core delta only for 1st thread in core */
403 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
404 delta_core(c, c2);
406 /* always calculate thread delta */
407 ret = delta_thread(t, t2, c2); /* c2 is core delta */
408 if (ret != 0)
409 return ret;
411 /* calculate package delta only for 1st core in package */
412 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
413 delta_package(p, p2);
415 return 0;
416 }
418 static unsigned long long
419 rdtsc(void)
420 {
421 unsigned int low, high;
423 asm volatile("rdtsc" : "=a" (low), "=d" (high));
425 return low | ((unsigned long long)high) << 32;
426 }
429 /*
430 * get_counters(...)
431 * migrate to cpu
432 * acquire and record local counters for that cpu
433 */
434 static int __must_check
435 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
436 {
437 int cpu = t->cpu_id;
438 unsigned long long msr;
440 if (cpu_migrate(cpu)) {
441 WARNING("Could not migrate to CPU %d\n", cpu);
442 return -ERR_CPU_MIGRATE;
443 }
445 t->tsc = rdtsc(); /* we are running on local CPU of interest */
447 if (has_aperf) {
448 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
449 return -ERR_MSR_IA32_APERF;
450 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
451 return -ERR_MSR_IA32_MPERF;
452 }
454 if (do_smi) {
455 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
456 return -ERR_MSR_SMI_COUNT;
457 t->smi_count = msr & 0xFFFFFFFF;
458 }
460 /* collect core counters only for 1st thread in core */
461 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
462 return 0;
464 if (do_nhm_cstates && !do_slm_cstates) {
465 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
466 return -ERR_MSR_CORE_C3_RESIDENCY;
467 }
469 if (do_nhm_cstates) {
470 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
471 return -ERR_MSR_CORE_C6_RESIDENCY;
472 }
474 if (do_snb_cstates)
475 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
476 return -ERR_MSR_CORE_C7_RESIDENCY;
478 if (do_dts) {
479 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
480 return -ERR_MSR_IA32_THERM_STATUS;
481 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
482 }
485 /* collect package counters only for 1st core in package */
486 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
487 return 0;
489 if (do_nhm_cstates && !do_slm_cstates) {
490 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
491 return -ERR_MSR_PKG_C3_RESIDENCY;
492 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
493 return -ERR_MSR_PKG_C6_RESIDENCY;
494 }
495 if (do_snb_cstates) {
496 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
497 return -ERR_MSR_PKG_C2_RESIDENCY;
498 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
499 return -ERR_MSR_PKG_C7_RESIDENCY;
500 }
501 if (do_c8_c9_c10) {
502 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
503 return -ERR_MSR_PKG_C8_RESIDENCY;
504 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
505 return -ERR_MSR_PKG_C9_RESIDENCY;
506 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
507 return -ERR_MSR_PKG_C10_RESIDENCY;
508 }
509 if (do_rapl & RAPL_PKG) {
510 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
511 return -ERR_MSR_PKG_ENERGY_STATUS;
512 p->energy_pkg = msr & 0xFFFFFFFF;
513 }
514 if (do_rapl & RAPL_CORES) {
515 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
516 return MSR_PP0_ENERGY_STATUS;
517 p->energy_cores = msr & 0xFFFFFFFF;
518 }
519 if (do_rapl & RAPL_DRAM) {
520 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
521 return -ERR_MSR_DRAM_ENERGY_STATUS;
522 p->energy_dram = msr & 0xFFFFFFFF;
523 }
524 if (do_rapl & RAPL_GFX) {
525 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
526 return -ERR_MSR_PP1_ENERGY_STATUS;
527 p->energy_gfx = msr & 0xFFFFFFFF;
528 }
529 if (do_rapl & RAPL_PKG_PERF_STATUS) {
530 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
531 return -ERR_MSR_PKG_PERF_STATUS;
532 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
533 }
534 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
535 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
536 return -ERR_MSR_DRAM_PERF_STATUS;
537 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
538 }
539 if (do_ptm) {
540 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
541 return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
542 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
543 }
544 return 0;
545 }
547 static void
548 free_all_buffers(void)
549 {
550 allocated = false;
551 initialized = false;
553 CPU_FREE(cpu_present_set);
554 cpu_present_set = NULL;
555 cpu_present_set = 0;
557 CPU_FREE(cpu_affinity_set);
558 cpu_affinity_set = NULL;
559 cpu_affinity_setsize = 0;
561 free(thread_even);
562 free(core_even);
563 free(package_even);
565 thread_even = NULL;
566 core_even = NULL;
567 package_even = NULL;
569 free(thread_odd);
570 free(core_odd);
571 free(package_odd);
573 thread_odd = NULL;
574 core_odd = NULL;
575 package_odd = NULL;
576 }
578 /*
579 * Parse a file containing a single int.
580 */
581 static int
582 parse_int_file(const char *fmt, ...)
583 {
584 va_list args;
585 char path[PATH_MAX];
586 FILE *filep;
587 int value;
589 va_start(args, fmt);
590 vsnprintf(path, sizeof(path), fmt, args);
591 va_end(args);
592 filep = fopen(path, "r");
593 if (!filep) {
594 ERROR("%s: open failed", path);
595 return -ERR_CANT_OPEN_FILE;
596 }
597 if (fscanf(filep, "%d", &value) != 1) {
598 ERROR("%s: failed to parse number from file", path);
599 return -ERR_CANT_READ_NUMBER;
600 }
601 fclose(filep);
602 return value;
603 }
605 /*
606 * cpu_is_first_sibling_in_core(cpu)
607 * return 1 if given CPU is 1st HT sibling in the core
608 */
609 static int
610 cpu_is_first_sibling_in_core(int cpu)
611 {
612 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
613 }
615 /*
616 * cpu_is_first_core_in_package(cpu)
617 * return 1 if given CPU is 1st core in package
618 */
619 static int
620 cpu_is_first_core_in_package(int cpu)
621 {
622 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
623 }
625 static int
626 get_physical_package_id(int cpu)
627 {
628 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
629 }
631 static int
632 get_core_id(int cpu)
633 {
634 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
635 }
637 static int
638 get_num_ht_siblings(int cpu)
639 {
640 char path[80];
641 FILE *filep;
642 int sib1, sib2;
643 int matches;
644 char character;
646 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
647 filep = fopen(path, "r");
648 if (!filep) {
649 ERROR("%s: open failed", path);
650 return -ERR_CANT_OPEN_FILE;
651 }
652 /*
653 * file format:
654 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
655 * otherwinse 1 sibling (self).
656 */
657 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
659 fclose(filep);
661 if (matches == 3)
662 return 2;
663 else
664 return 1;
665 }
667 /*
668 * run func(thread, core, package) in topology order
669 * skip non-present cpus
670 */
673 static int __must_check
674 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
675 struct pkg_data *, struct thread_data *, struct core_data *,
676 struct pkg_data *), struct thread_data *thread_base,
677 struct core_data *core_base, struct pkg_data *pkg_base,
678 struct thread_data *thread_base2, struct core_data *core_base2,
679 struct pkg_data *pkg_base2)
680 {
681 int retval, pkg_no, core_no, thread_no;
683 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
684 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
685 for (thread_no = 0; thread_no <
686 topo.num_threads_per_core; ++thread_no) {
687 struct thread_data *t, *t2;
688 struct core_data *c, *c2;
689 struct pkg_data *p, *p2;
691 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
693 if (cpu_is_not_present(t->cpu_id))
694 continue;
696 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
698 c = GET_CORE(core_base, core_no, pkg_no);
699 c2 = GET_CORE(core_base2, core_no, pkg_no);
701 p = GET_PKG(pkg_base, pkg_no);
702 p2 = GET_PKG(pkg_base2, pkg_no);
704 retval = func(t, c, p, t2, c2, p2);
705 if (retval)
706 return retval;
707 }
708 }
709 }
710 return 0;
711 }
713 /*
714 * run func(cpu) on every cpu in /proc/stat
715 * return max_cpu number
716 */
717 static int __must_check
718 for_all_proc_cpus(int (func)(int))
719 {
720 FILE *fp;
721 int cpu_num;
722 int retval;
724 fp = fopen(proc_stat, "r");
725 if (!fp) {
726 ERROR("%s: open failed", proc_stat);
727 return -ERR_CANT_OPEN_FILE;
728 }
730 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
731 if (retval != 0) {
732 ERROR("%s: failed to parse format", proc_stat);
733 return -ERR_CANT_READ_PROC_STAT;
734 }
736 while (1) {
737 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
738 if (retval != 1)
739 break;
741 retval = func(cpu_num);
742 if (retval) {
743 fclose(fp);
744 return(retval);
745 }
746 }
747 fclose(fp);
748 return 0;
749 }
751 /*
752 * count_cpus()
753 * remember the last one seen, it will be the max
754 */
755 static int
756 count_cpus(int cpu)
757 {
758 if (topo.max_cpu_num < cpu)
759 topo.max_cpu_num = cpu;
761 topo.num_cpus += 1;
762 return 0;
763 }
764 static int
765 mark_cpu_present(int cpu)
766 {
767 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
768 return 0;
769 }
772 static void
773 turbostat_submit (const char *plugin_instance,
774 const char *type, const char *type_instance,
775 gauge_t value)
776 {
777 value_list_t vl = VALUE_LIST_INIT;
778 value_t v;
780 v.gauge = value;
781 vl.values = &v;
782 vl.values_len = 1;
783 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
784 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
785 if (plugin_instance != NULL)
786 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
787 sstrncpy (vl.type, type, sizeof (vl.type));
788 if (type_instance != NULL)
789 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
791 plugin_dispatch_values (&vl);
792 }
794 /*
795 * column formatting convention & formats
796 * package: "pk" 2 columns %2d
797 * core: "cor" 3 columns %3d
798 * CPU: "CPU" 3 columns %3d
799 * Pkg_W: %6.2
800 * Cor_W: %6.2
801 * GFX_W: %5.2
802 * RAM_W: %5.2
803 * GHz: "GHz" 3 columns %3.2
804 * TSC: "TSC" 3 columns %3.2
805 * SMI: "SMI" 4 columns %4d
806 * percentage " %pc3" %6.2
807 * Perf Status percentage: %5.2
808 * "CTMP" 4 columns %4d
809 */
810 #define NAME_LEN 12
811 static int
812 submit_counters(struct thread_data *t, struct core_data *c,
813 struct pkg_data *p)
814 {
815 char name[NAME_LEN];
816 double interval_float;
818 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
820 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
822 if (do_nhm_cstates) {
823 if (!skip_c0)
824 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
825 if (!skip_c1)
826 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
827 }
829 /* GHz */
830 if (has_aperf && ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc))))
831 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / units * t->aperf / t->mperf / interval_float);
833 /* SMI */
834 if (do_smi)
835 turbostat_submit(NULL, "current", name, t->smi_count);
837 /* print per-core data only for 1st thread in core */
838 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
839 goto done;
841 snprintf(name, NAME_LEN, "core%02d", c->core_id);
843 if (do_nhm_cstates && !do_slm_cstates)
844 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
845 if (do_nhm_cstates)
846 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
847 if (do_snb_cstates)
848 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
850 if (do_dts)
851 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
853 /* print per-package data only for 1st core in package */
854 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
855 goto done;
857 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
859 if (do_ptm)
860 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
862 if (do_snb_cstates)
863 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
864 if (do_nhm_cstates && !do_slm_cstates)
865 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
866 if (do_nhm_cstates && !do_slm_cstates)
867 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
868 if (do_snb_cstates)
869 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
870 if (do_c8_c9_c10) {
871 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
872 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
873 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
874 }
876 if (do_rapl) {
877 if (do_rapl & RAPL_PKG)
878 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
879 if (do_rapl & RAPL_CORES)
880 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
881 if (do_rapl & RAPL_GFX)
882 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
883 if (do_rapl & RAPL_DRAM)
884 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
885 }
886 done:
887 return 0;
888 }
890 static int
891 turbostat_read(user_data_t * not_used)
892 {
893 int ret;
895 if (!allocated) {
896 if ((ret = setup_all_buffers()) < 0)
897 return ret;
898 }
900 if (for_all_proc_cpus(cpu_is_not_present)) {
901 free_all_buffers();
902 if ((ret = setup_all_buffers()) < 0)
903 return ret;
904 if (for_all_proc_cpus(cpu_is_not_present))
905 return -ERR_CPU_NOT_PRESENT;
906 }
908 if (!initialized) {
909 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
910 return ret;
911 gettimeofday(&tv_even, (struct timezone *)NULL);
912 is_even = true;
913 initialized = true;
914 return 0;
915 }
917 if (is_even) {
918 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
919 return ret;
920 gettimeofday(&tv_odd, (struct timezone *)NULL);
921 is_even = false;
922 timersub(&tv_odd, &tv_even, &tv_delta);
923 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
924 return ret;
925 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
926 return ret;
927 } else {
928 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
929 return ret;
930 gettimeofday(&tv_even, (struct timezone *)NULL);
931 is_even = true;
932 timersub(&tv_even, &tv_odd, &tv_delta);
933 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
934 return ret;
935 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
936 return ret;
937 }
938 return 0;
939 }
941 static int __must_check
942 check_dev_msr()
943 {
944 struct stat sb;
946 if (stat("/dev/cpu/0/msr", &sb)) {
947 ERROR("no /dev/cpu/0/msr\n"
948 "Try \"# modprobe msr\"");
949 return -ERR_NO_MSR;
950 }
951 return 0;
952 }
954 static int __must_check
955 check_super_user()
956 {
957 if (getuid() != 0) {
958 ERROR("must be root");
959 return -ERR_NOT_ROOT;
960 }
961 return 0;
962 }
965 #define RAPL_POWER_GRANULARITY 0x7FFF /* 15 bit power granularity */
966 #define RAPL_TIME_GRANULARITY 0x3F /* 6 bit time granularity */
968 static double
969 get_tdp(unsigned int model)
970 {
971 unsigned long long msr;
973 if (do_rapl & RAPL_PKG_POWER_INFO)
974 if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
975 return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
977 switch (model) {
978 case 0x37:
979 case 0x4D:
980 return 30.0;
981 default:
982 return 135.0;
983 }
984 }
987 /*
988 * rapl_probe()
989 *
990 * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
991 */
992 static void
993 rapl_probe(unsigned int family, unsigned int model)
994 {
995 unsigned long long msr;
996 unsigned int time_unit;
997 double tdp;
999 if (!genuine_intel)
1000 return;
1002 if (family != 6)
1003 return;
1005 switch (model) {
1006 case 0x2A:
1007 case 0x3A:
1008 case 0x3C: /* HSW */
1009 case 0x45: /* HSW */
1010 case 0x46: /* HSW */
1011 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
1012 break;
1013 case 0x3F: /* HSX */
1014 do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
1015 break;
1016 case 0x2D:
1017 case 0x3E:
1018 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
1019 break;
1020 case 0x37: /* BYT */
1021 case 0x4D: /* AVN */
1022 do_rapl = RAPL_PKG | RAPL_CORES ;
1023 break;
1024 default:
1025 return;
1026 }
1028 /* units on package 0, verify later other packages match */
1029 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1030 return;
1032 rapl_power_units = 1.0 / (1 << (msr & 0xF));
1033 if (model == 0x37)
1034 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1035 else
1036 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1038 time_unit = msr >> 16 & 0xF;
1039 if (time_unit == 0)
1040 time_unit = 0xA;
1042 rapl_time_units = 1.0 / (1 << (time_unit));
1044 tdp = get_tdp(model);
1046 rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
1047 // if (verbose)
1048 // fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
1050 return;
1051 }
1053 static int
1054 is_snb(unsigned int family, unsigned int model)
1055 {
1056 if (!genuine_intel)
1057 return 0;
1059 switch (model) {
1060 case 0x2A:
1061 case 0x2D:
1062 case 0x3A: /* IVB */
1063 case 0x3E: /* IVB Xeon */
1064 case 0x3C: /* HSW */
1065 case 0x3F: /* HSW */
1066 case 0x45: /* HSW */
1067 case 0x46: /* HSW */
1068 return 1;
1069 }
1070 return 0;
1071 }
1073 static int
1074 has_c8_c9_c10(unsigned int family, unsigned int model)
1075 {
1076 if (!genuine_intel)
1077 return 0;
1079 switch (model) {
1080 case 0x45:
1081 return 1;
1082 }
1083 return 0;
1084 }
1087 static int
1088 is_slm(unsigned int family, unsigned int model)
1089 {
1090 if (!genuine_intel)
1091 return 0;
1092 switch (model) {
1093 case 0x37: /* BYT */
1094 case 0x4D: /* AVN */
1095 return 1;
1096 }
1097 return 0;
1098 }
1100 /*
1101 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
1102 * the Thermal Control Circuit (TCC) activates.
1103 * This is usually equal to tjMax.
1104 *
1105 * Older processors do not have this MSR, so there we guess,
1106 * but also allow cmdline over-ride with -T.
1107 *
1108 * Several MSR temperature values are in units of degrees-C
1109 * below this value, including the Digital Thermal Sensor (DTS),
1110 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
1111 */
1112 static int __must_check
1113 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1114 {
1115 unsigned long long msr;
1116 unsigned int target_c_local;
1117 int cpu;
1119 /* tcc_activation_temp is used only for dts or ptm */
1120 if (!(do_dts || do_ptm))
1121 return 0;
1123 /* this is a per-package concept */
1124 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1125 return 0;
1127 cpu = t->cpu_id;
1128 if (cpu_migrate(cpu)) {
1129 ERROR("Could not migrate to CPU %d\n", cpu);
1130 return -ERR_CPU_MIGRATE;
1131 }
1133 if (tcc_activation_temp_override != 0) {
1134 tcc_activation_temp = tcc_activation_temp_override;
1135 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
1136 cpu, tcc_activation_temp);
1137 return 0;
1138 }
1140 /* Temperature Target MSR is Nehalem and newer only */
1141 if (!do_nehalem_platform_info)
1142 goto guess;
1144 if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
1145 goto guess;
1147 target_c_local = (msr >> 16) & 0x7F;
1149 if (target_c_local < 85 || target_c_local > 127)
1150 goto guess;
1152 tcc_activation_temp = target_c_local;
1154 return 0;
1156 guess:
1157 tcc_activation_temp = TJMAX_DEFAULT;
1158 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1159 cpu, tcc_activation_temp);
1161 return 0;
1162 }
1164 static int __must_check
1165 check_cpuid()
1166 {
1167 unsigned int eax, ebx, ecx, edx, max_level;
1168 unsigned int fms, family, model;
1170 eax = ebx = ecx = edx = 0;
1172 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1174 if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1175 genuine_intel = 1;
1177 fms = 0;
1178 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1179 family = (fms >> 8) & 0xf;
1180 model = (fms >> 4) & 0xf;
1181 if (family == 6 || family == 0xf)
1182 model += ((fms >> 16) & 0xf) << 4;
1184 if (!(edx & (1 << 5))) {
1185 ERROR("CPUID: no MSR");
1186 return -ERR_NO_MSR;
1187 }
1189 /*
1190 * check max extended function levels of CPUID.
1191 * This is needed to check for invariant TSC.
1192 * This check is valid for both Intel and AMD.
1193 */
1194 ebx = ecx = edx = 0;
1195 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1197 if (max_level < 0x80000007) {
1198 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1199 return -ERR_NO_INVARIANT_TSC;
1200 }
1202 /*
1203 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1204 * this check is valid for both Intel and AMD
1205 */
1206 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1207 has_invariant_tsc = edx & (1 << 8);
1209 if (!has_invariant_tsc) {
1210 ERROR("No invariant TSC");
1211 return -ERR_NO_INVARIANT_TSC;
1212 }
1214 /*
1215 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1216 * this check is valid for both Intel and AMD
1217 */
1219 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1220 has_aperf = ecx & (1 << 0);
1221 do_dts = eax & (1 << 0);
1222 do_ptm = eax & (1 << 6);
1223 has_epb = ecx & (1 << 3);
1225 if (!has_aperf) {
1226 ERROR("No APERF");
1227 return -ERR_NO_APERF;
1228 }
1230 do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
1231 do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1232 do_smi = do_nhm_cstates;
1233 do_snb_cstates = is_snb(family, model);
1234 do_c8_c9_c10 = has_c8_c9_c10(family, model);
1235 do_slm_cstates = is_slm(family, model);
1237 rapl_probe(family, model);
1239 return 0;
1240 }
1244 static int __must_check
1245 topology_probe()
1246 {
1247 int i;
1248 int ret;
1249 int max_core_id = 0;
1250 int max_package_id = 0;
1251 int max_siblings = 0;
1252 struct cpu_topology {
1253 int core_id;
1254 int physical_package_id;
1255 } *cpus;
1257 /* Initialize num_cpus, max_cpu_num */
1258 topo.num_cpus = 0;
1259 topo.max_cpu_num = 0;
1260 ret = for_all_proc_cpus(count_cpus);
1261 if (ret < 0)
1262 return ret;
1263 if (topo.num_cpus > 1)
1264 show_cpu = 1;
1266 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1268 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1269 if (cpus == NULL) {
1270 ERROR("calloc cpus");
1271 return -ERR_CALLOC;
1272 }
1274 /*
1275 * Allocate and initialize cpu_present_set
1276 */
1277 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1278 if (cpu_present_set == NULL) {
1279 free(cpus);
1280 ERROR("CPU_ALLOC");
1281 return -ERR_CPU_ALLOC;
1282 }
1283 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1284 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1285 ret = for_all_proc_cpus(mark_cpu_present);
1286 if (ret < 0) {
1287 free(cpus);
1288 return ret;
1289 }
1291 /*
1292 * Allocate and initialize cpu_affinity_set
1293 */
1294 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1295 if (cpu_affinity_set == NULL) {
1296 free(cpus);
1297 ERROR("CPU_ALLOC");
1298 return -ERR_CPU_ALLOC;
1299 }
1300 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1301 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1304 /*
1305 * For online cpus
1306 * find max_core_id, max_package_id
1307 */
1308 for (i = 0; i <= topo.max_cpu_num; ++i) {
1309 int siblings;
1311 if (cpu_is_not_present(i)) {
1312 //if (verbose > 1)
1313 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1314 continue;
1315 }
1316 cpus[i].core_id = get_core_id(i);
1317 if (cpus[i].core_id < 0)
1318 return cpus[i].core_id;
1319 if (cpus[i].core_id > max_core_id)
1320 max_core_id = cpus[i].core_id;
1322 cpus[i].physical_package_id = get_physical_package_id(i);
1323 if (cpus[i].physical_package_id < 0)
1324 return cpus[i].physical_package_id;
1325 if (cpus[i].physical_package_id > max_package_id)
1326 max_package_id = cpus[i].physical_package_id;
1328 siblings = get_num_ht_siblings(i);
1329 if (siblings < 0)
1330 return siblings;
1331 if (siblings > max_siblings)
1332 max_siblings = siblings;
1333 DEBUG("cpu %d pkg %d core %d\n",
1334 i, cpus[i].physical_package_id, cpus[i].core_id);
1335 }
1336 topo.num_cores_per_pkg = max_core_id + 1;
1337 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1338 max_core_id, topo.num_cores_per_pkg);
1339 if (topo.num_cores_per_pkg > 1)
1340 show_core = 1;
1342 topo.num_packages = max_package_id + 1;
1343 DEBUG("max_package_id %d, sizing for %d packages\n",
1344 max_package_id, topo.num_packages);
1345 if (topo.num_packages > 1)
1346 show_pkg = 1;
1348 topo.num_threads_per_core = max_siblings;
1349 DEBUG("max_siblings %d\n", max_siblings);
1351 free(cpus);
1352 return 0;
1353 }
1355 static int
1356 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1357 {
1358 int i;
1360 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1361 topo.num_packages, sizeof(struct thread_data));
1362 if (*t == NULL)
1363 goto error;
1365 for (i = 0; i < topo.num_threads_per_core *
1366 topo.num_cores_per_pkg * topo.num_packages; i++)
1367 (*t)[i].cpu_id = -1;
1369 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1370 sizeof(struct core_data));
1371 if (*c == NULL)
1372 goto error;
1374 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1375 (*c)[i].core_id = -1;
1377 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1378 if (*p == NULL)
1379 goto error;
1381 for (i = 0; i < topo.num_packages; i++)
1382 (*p)[i].package_id = i;
1384 return 0;
1385 error:
1386 ERROR("calloc counters");
1387 return -ERR_CALLOC;
1388 }
1389 /*
1390 * init_counter()
1391 *
1392 * set cpu_id, core_num, pkg_num
1393 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1394 *
1395 * increment topo.num_cores when 1st core in pkg seen
1396 */
1397 static int
1398 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1399 struct pkg_data *pkg_base, int thread_num, int core_num,
1400 int pkg_num, int cpu_id)
1401 {
1402 int ret;
1403 struct thread_data *t;
1404 struct core_data *c;
1405 struct pkg_data *p;
1407 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1408 c = GET_CORE(core_base, core_num, pkg_num);
1409 p = GET_PKG(pkg_base, pkg_num);
1411 t->cpu_id = cpu_id;
1412 if (thread_num == 0) {
1413 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1414 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1415 return ret;
1416 } else if (ret != 0) {
1417 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1418 }
1419 }
1421 c->core_id = core_num;
1422 p->package_id = pkg_num;
1424 return 0;
1425 }
1428 static int
1429 initialize_counters(int cpu_id)
1430 {
1431 int my_thread_id, my_core_id, my_package_id;
1432 int ret;
1434 my_package_id = get_physical_package_id(cpu_id);
1435 if (my_package_id < 0)
1436 return my_package_id;
1437 my_core_id = get_core_id(cpu_id);
1438 if (my_core_id < 0)
1439 return my_core_id;
1441 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1442 return ret;
1443 } else if (ret != 0) {
1444 my_thread_id = 0;
1445 topo.num_cores++;
1446 } else {
1447 my_thread_id = 1;
1448 }
1450 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1451 if (ret < 0)
1452 return ret;
1453 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1454 if (ret < 0)
1455 return ret;
1456 return 0;
1457 }
1459 #define DO_OR_GOTO_ERR(something) \
1460 do { \
1461 ret = (something); \
1462 if (ret < 0) \
1463 goto err; \
1464 } while (0)
1466 static int setup_all_buffers(void)
1467 {
1468 int ret;
1470 DO_OR_GOTO_ERR(topology_probe());
1471 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1472 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1473 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1475 allocated = true;
1476 return 0;
1477 err:
1478 free_all_buffers();
1479 return ret;
1480 }
1482 static int
1483 turbostat_init(void)
1484 {
1485 int ret;
1486 struct timespec ts;
1488 DO_OR_GOTO_ERR(check_cpuid());
1489 DO_OR_GOTO_ERR(check_dev_msr());
1490 DO_OR_GOTO_ERR(check_super_user());
1491 DO_OR_GOTO_ERR(setup_all_buffers());
1492 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1494 ts.tv_sec = interval_sec;
1495 ts.tv_nsec = 0;
1497 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, &ts, NULL);
1499 return 0;
1500 err:
1501 free_all_buffers();
1502 return ret;
1503 }
1505 static const char *config_keys[] =
1506 {
1507 "Interval",
1508 };
1509 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
1511 static int
1512 turbostat_config(const char *key, const char *value)
1513 {
1514 if (strcasecmp("Interval", key) == 0)
1515 interval_sec = atoi(value);
1516 else
1517 return -1;
1518 return 0;
1519 }
1521 void module_register(void);
1522 void module_register(void)
1523 {
1524 plugin_register_init(PLUGIN_NAME, turbostat_init);
1525 plugin_register_config(PLUGIN_NAME, turbostat_config, config_keys, config_keys_num);
1526 }