6466d5c63a59d08db32dc01b34243a736c4ba08b
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 /*
28 * _GNU_SOURCE is required because of the following functions:
29 * - CPU_ISSET_S
30 * - CPU_ZERO_S
31 * - CPU_SET_S
32 * - CPU_FREE
33 * - CPU_ALLOC
34 * - CPU_ALLOC_SIZE
35 */
36 #define _GNU_SOURCE
38 #include <asm/msr-index.h>
39 #include <stdarg.h>
40 #include <stdio.h>
41 #include <err.h>
42 #include <unistd.h>
43 #include <sys/types.h>
44 #include <sys/wait.h>
45 #include <sys/stat.h>
46 #include <sys/resource.h>
47 #include <fcntl.h>
48 #include <signal.h>
49 #include <sys/time.h>
50 #include <stdlib.h>
51 #include <dirent.h>
52 #include <string.h>
53 #include <ctype.h>
54 #include <sched.h>
55 #include <cpuid.h>
57 #include "collectd.h"
58 #include "common.h"
59 #include "plugin.h"
61 #define PLUGIN_NAME "turbostat"
63 static const char *proc_stat = "/proc/stat";
64 static unsigned int skip_c0;
65 static unsigned int skip_c1;
66 static unsigned int do_core_cstate;
67 static unsigned int do_pkg_cstate;
68 static unsigned int do_rapl;
69 static unsigned int do_dts;
70 static unsigned int do_ptm;
71 static unsigned int tcc_activation_temp;
72 static unsigned int tcc_activation_temp_override;
73 static double rapl_energy_units;
75 #define RAPL_PKG (1 << 0)
76 /* 0x610 MSR_PKG_POWER_LIMIT */
77 /* 0x611 MSR_PKG_ENERGY_STATUS */
78 #define RAPL_PKG_PERF_STATUS (1 << 1)
79 /* 0x613 MSR_PKG_PERF_STATUS */
80 #define RAPL_PKG_POWER_INFO (1 << 2)
81 /* 0x614 MSR_PKG_POWER_INFO */
83 #define RAPL_DRAM (1 << 3)
84 /* 0x618 MSR_DRAM_POWER_LIMIT */
85 /* 0x619 MSR_DRAM_ENERGY_STATUS */
86 /* 0x61c MSR_DRAM_POWER_INFO */
87 #define RAPL_DRAM_PERF_STATUS (1 << 4)
88 /* 0x61b MSR_DRAM_PERF_STATUS */
90 #define RAPL_CORES (1 << 5)
91 /* 0x638 MSR_PP0_POWER_LIMIT */
92 /* 0x639 MSR_PP0_ENERGY_STATUS */
93 #define RAPL_CORE_POLICY (1 << 6)
94 /* 0x63a MSR_PP0_POLICY */
97 #define RAPL_GFX (1 << 7)
98 /* 0x640 MSR_PP1_POWER_LIMIT */
99 /* 0x641 MSR_PP1_ENERGY_STATUS */
100 /* 0x642 MSR_PP1_POLICY */
101 #define TJMAX_DEFAULT 100
103 int aperf_mperf_unstable;
104 int backwards_count;
105 char *progname;
107 cpu_set_t *cpu_present_set, *cpu_affinity_set;
108 size_t cpu_present_setsize, cpu_affinity_setsize;
110 struct thread_data {
111 unsigned long long tsc;
112 unsigned long long aperf;
113 unsigned long long mperf;
114 unsigned long long c1;
115 unsigned int smi_count;
116 unsigned int cpu_id;
117 unsigned int flags;
118 #define CPU_IS_FIRST_THREAD_IN_CORE 0x2
119 #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
120 } *thread_even, *thread_odd;
122 struct core_data {
123 unsigned long long c3;
124 unsigned long long c6;
125 unsigned long long c7;
126 unsigned int core_temp_c;
127 unsigned int core_id;
128 } *core_even, *core_odd;
130 struct pkg_data {
131 unsigned long long pc2;
132 unsigned long long pc3;
133 unsigned long long pc6;
134 unsigned long long pc7;
135 unsigned long long pc8;
136 unsigned long long pc9;
137 unsigned long long pc10;
138 unsigned int package_id;
139 unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
140 unsigned int energy_dram; /* MSR_DRAM_ENERGY_STATUS */
141 unsigned int energy_cores; /* MSR_PP0_ENERGY_STATUS */
142 unsigned int energy_gfx; /* MSR_PP1_ENERGY_STATUS */
143 unsigned int rapl_pkg_perf_status; /* MSR_PKG_PERF_STATUS */
144 unsigned int rapl_dram_perf_status; /* MSR_DRAM_PERF_STATUS */
145 unsigned int pkg_temp_c;
147 } *package_even, *package_odd;
149 #define ODD_COUNTERS thread_odd, core_odd, package_odd
150 #define EVEN_COUNTERS thread_even, core_even, package_even
151 static _Bool is_even = 1;
153 static _Bool allocated = 0;
154 static _Bool initialized = 0;
156 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
157 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
158 topo.num_threads_per_core + \
159 (core_no) * topo.num_threads_per_core + (thread_no))
160 #define GET_CORE(core_base, core_no, pkg_no) \
161 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
162 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
164 struct topo_params {
165 int num_packages;
166 int num_cpus;
167 int num_cores;
168 int max_cpu_num;
169 int num_cores_per_pkg;
170 int num_threads_per_core;
171 } topo;
173 struct timeval tv_even, tv_odd, tv_delta;
175 enum return_values {
176 OK = 0,
177 ERR_CPU_MIGRATE,
178 ERR_MSR_IA32_APERF,
179 ERR_MSR_IA32_MPERF,
180 ERR_MSR_SMI_COUNT,
181 ERR_MSR_CORE_C3_RESIDENCY,
182 ERR_MSR_CORE_C6_RESIDENCY,
183 ERR_MSR_CORE_C7_RESIDENCY,
184 ERR_MSR_IA32_THERM_STATUS,
185 ERR_MSR_PKG_C3_RESIDENCY,
186 ERR_MSR_PKG_C6_RESIDENCY,
187 ERR_MSR_PKG_C2_RESIDENCY,
188 ERR_MSR_PKG_C7_RESIDENCY,
189 ERR_MSR_PKG_C8_RESIDENCY,
190 ERR_MSR_PKG_C9_RESIDENCY,
191 ERR_MSR_PKG_C10_RESIDENCY,
192 ERR_MSR_PKG_ENERGY_STATUS,
193 ERR_MSR_PKG_POWER_INFO,
194 ERR_MSR_PP0_ENERGY_STATUS,
195 ERR_MSR_DRAM_ENERGY_STATUS,
196 ERR_MSR_PP1_ENERGY_STATUS,
197 ERR_MSR_PKG_PERF_STATUS,
198 ERR_MSR_DRAM_PERF_STATUS,
199 ERR_MSR_IA32_PACKAGE_THERM_STATUS,
200 ERR_MSR_IA32_TSC,
201 ERR_CPU_NOT_PRESENT,
202 ERR_NO_MSR,
203 ERR_CANT_OPEN_FILE,
204 ERR_CANT_READ_NUMBER,
205 ERR_CANT_READ_PROC_STAT,
206 ERR_NO_INVARIANT_TSC,
207 ERR_NO_APERF,
208 ERR_CALLOC,
209 ERR_CPU_ALLOC,
210 ERR_NOT_ROOT,
211 UNSUPPORTED_CPU,
212 };
214 static int setup_all_buffers(void);
216 static int
217 cpu_is_not_present(int cpu)
218 {
219 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
220 }
221 /*
222 * run func(thread, core, package) in topology order
223 * skip non-present cpus
224 */
226 static int __attribute__((warn_unused_result))
227 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
228 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
229 {
230 int retval, pkg_no, core_no, thread_no;
232 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
233 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
234 for (thread_no = 0; thread_no <
235 topo.num_threads_per_core; ++thread_no) {
236 struct thread_data *t;
237 struct core_data *c;
238 struct pkg_data *p;
240 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
242 if (cpu_is_not_present(t->cpu_id))
243 continue;
245 c = GET_CORE(core_base, core_no, pkg_no);
246 p = GET_PKG(pkg_base, pkg_no);
248 retval = func(t, c, p);
249 if (retval)
250 return retval;
251 }
252 }
253 }
254 return 0;
255 }
257 static int __attribute__((warn_unused_result))
258 cpu_migrate(int cpu)
259 {
260 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
261 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
262 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
263 return -ERR_CPU_MIGRATE;
264 else
265 return 0;
266 }
268 static int __attribute__((warn_unused_result))
269 get_msr(int cpu, off_t offset, unsigned long long *msr)
270 {
271 ssize_t retval;
272 char pathname[32];
273 int fd;
275 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
276 fd = open(pathname, O_RDONLY);
277 if (fd < 0)
278 return -1;
280 retval = pread(fd, msr, sizeof *msr, offset);
281 close(fd);
283 if (retval != sizeof *msr) {
284 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
285 return -1;
286 }
288 return 0;
289 }
291 #define DELTA_WRAP32(new, old) \
292 if (new > old) { \
293 old = new - old; \
294 } else { \
295 old = 0x100000000 + new - old; \
296 }
298 static void
299 delta_package(struct pkg_data *new, struct pkg_data *old)
300 {
301 old->pc2 = new->pc2 - old->pc2;
302 old->pc3 = new->pc3 - old->pc3;
303 old->pc6 = new->pc6 - old->pc6;
304 old->pc7 = new->pc7 - old->pc7;
305 old->pc8 = new->pc8 - old->pc8;
306 old->pc9 = new->pc9 - old->pc9;
307 old->pc10 = new->pc10 - old->pc10;
308 old->pkg_temp_c = new->pkg_temp_c;
310 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
311 DELTA_WRAP32(new->energy_cores, old->energy_cores);
312 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
313 DELTA_WRAP32(new->energy_dram, old->energy_dram);
314 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
315 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
316 }
318 static void
319 delta_core(struct core_data *new, struct core_data *old)
320 {
321 old->c3 = new->c3 - old->c3;
322 old->c6 = new->c6 - old->c6;
323 old->c7 = new->c7 - old->c7;
324 old->core_temp_c = new->core_temp_c;
325 }
327 /*
328 * old = new - old
329 */
330 static int __attribute__((warn_unused_result))
331 delta_thread(struct thread_data *new, struct thread_data *old,
332 struct core_data *core_delta)
333 {
334 old->tsc = new->tsc - old->tsc;
336 /* check for TSC < 1 Mcycles over interval */
337 if (old->tsc < (1000 * 1000)) {
338 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
339 "You can disable all c-states by booting with \"idle=poll\"\n"
340 "or just the deep ones with \"processor.max_cstate=1\"");
341 return -1;
342 }
344 old->c1 = new->c1 - old->c1;
346 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
347 old->aperf = new->aperf - old->aperf;
348 old->mperf = new->mperf - old->mperf;
349 } else {
351 if (!aperf_mperf_unstable) {
352 WARNING("%s: APERF or MPERF went backwards *\n", progname);
353 WARNING("* Frequency results do not cover entire interval *\n");
354 WARNING("* fix this by running Linux-2.6.30 or later *\n");
356 aperf_mperf_unstable = 1;
357 }
358 /*
359 * mperf delta is likely a huge "positive" number
360 * can not use it for calculating c0 time
361 */
362 skip_c0 = 1;
363 skip_c1 = 1;
364 }
367 /*
368 * As counter collection is not atomic,
369 * it is possible for mperf's non-halted cycles + idle states
370 * to exceed TSC's all cycles: show c1 = 0% in that case.
371 */
372 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
373 old->c1 = 0;
374 else {
375 /* normal case, derive c1 */
376 old->c1 = old->tsc - old->mperf - core_delta->c3
377 - core_delta->c6 - core_delta->c7;
378 }
380 if (old->mperf == 0) {
381 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
382 old->mperf = 1; /* divide by 0 protection */
383 }
385 old->smi_count = new->smi_count - old->smi_count;
387 return 0;
388 }
390 static int __attribute__((warn_unused_result))
391 delta_cpu(struct thread_data *t, struct core_data *c,
392 struct pkg_data *p, struct thread_data *t2,
393 struct core_data *c2, struct pkg_data *p2)
394 {
395 int ret;
397 /* calculate core delta only for 1st thread in core */
398 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
399 delta_core(c, c2);
401 /* always calculate thread delta */
402 ret = delta_thread(t, t2, c2); /* c2 is core delta */
403 if (ret != 0)
404 return ret;
406 /* calculate package delta only for 1st core in package */
407 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
408 delta_package(p, p2);
410 return 0;
411 }
413 /*
414 * get_counters(...)
415 * migrate to cpu
416 * acquire and record local counters for that cpu
417 */
418 static int __attribute__((warn_unused_result))
419 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
420 {
421 int cpu = t->cpu_id;
422 unsigned long long msr;
424 if (cpu_migrate(cpu)) {
425 WARNING("Could not migrate to CPU %d\n", cpu);
426 return -ERR_CPU_MIGRATE;
427 }
429 if (get_msr(cpu, MSR_IA32_TSC, &t->tsc))
430 return -MSR_IA32_TSC;
432 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
433 return -ERR_MSR_IA32_APERF;
434 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
435 return -ERR_MSR_IA32_MPERF;
437 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
438 return -ERR_MSR_SMI_COUNT;
439 t->smi_count = msr & 0xFFFFFFFF;
441 /* collect core counters only for 1st thread in core */
442 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
443 return 0;
445 if (do_core_cstate & (1 << 3))
446 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
447 return -ERR_MSR_CORE_C3_RESIDENCY
448 if (do_core_cstate & (1 << 6))
449 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
450 return -ERR_MSR_CORE_C6_RESIDENCY
451 if (do_core_cstate & (1 << 7))
452 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
453 return -ERR_MSR_CORE_C7_RESIDENCY
455 if (do_dts) {
456 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
457 return -ERR_MSR_IA32_THERM_STATUS;
458 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
459 }
461 /* collect package counters only for 1st core in package */
462 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
463 return 0;
465 if (do_pkg_cstate & (1 << 2))
466 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
467 return -ERR_MSR_PKG_C2_RESIDENCY
468 if (do_pkg_cstate & (1 << 3))
469 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
470 return -ERR_MSR_PKG_C3_RESIDENCY
471 if (do_pkg_cstate & (1 << 6))
472 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
473 return -ERR_MSR_PKG_C6_RESIDENCY
474 if (do_pkg_cstate & (1 << 7))
475 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
476 return -ERR_MSR_PKG_C7_RESIDENCY
477 if (do_pkg_cstate & (1 << 8))
478 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
479 return -ERR_MSR_PKG_C8_RESIDENCY
480 if (do_pkg_cstate & (1 << 9))
481 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
482 return -ERR_MSR_PKG_C9_RESIDENCY
483 if (do_pkg_cstate & (1 << 10))
484 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
485 return -ERR_MSR_PKG_C10_RESIDENCY
487 if (do_rapl & RAPL_PKG) {
488 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
489 return -ERR_MSR_PKG_ENERGY_STATUS;
490 p->energy_pkg = msr & 0xFFFFFFFF;
491 }
492 if (do_rapl & RAPL_CORES) {
493 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
494 return MSR_PP0_ENERGY_STATUS;
495 p->energy_cores = msr & 0xFFFFFFFF;
496 }
497 if (do_rapl & RAPL_DRAM) {
498 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
499 return -ERR_MSR_DRAM_ENERGY_STATUS;
500 p->energy_dram = msr & 0xFFFFFFFF;
501 }
502 if (do_rapl & RAPL_GFX) {
503 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
504 return -ERR_MSR_PP1_ENERGY_STATUS;
505 p->energy_gfx = msr & 0xFFFFFFFF;
506 }
507 if (do_rapl & RAPL_PKG_PERF_STATUS) {
508 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
509 return -ERR_MSR_PKG_PERF_STATUS;
510 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
511 }
512 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
513 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
514 return -ERR_MSR_DRAM_PERF_STATUS;
515 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
516 }
517 if (do_ptm) {
518 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
519 return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
520 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
521 }
522 return 0;
523 }
525 static void
526 free_all_buffers(void)
527 {
528 allocated = 0;
529 initialized = 0;
531 CPU_FREE(cpu_present_set);
532 cpu_present_set = NULL;
533 cpu_present_set = 0;
535 CPU_FREE(cpu_affinity_set);
536 cpu_affinity_set = NULL;
537 cpu_affinity_setsize = 0;
539 free(thread_even);
540 free(core_even);
541 free(package_even);
543 thread_even = NULL;
544 core_even = NULL;
545 package_even = NULL;
547 free(thread_odd);
548 free(core_odd);
549 free(package_odd);
551 thread_odd = NULL;
552 core_odd = NULL;
553 package_odd = NULL;
554 }
556 /*
557 * Parse a file containing a single int.
558 */
559 static int __attribute__ ((format(printf,1,2)))
560 parse_int_file(const char *fmt, ...)
561 {
562 va_list args;
563 char path[PATH_MAX];
564 FILE *filep;
565 int value;
567 va_start(args, fmt);
568 vsnprintf(path, sizeof(path), fmt, args);
569 va_end(args);
570 filep = fopen(path, "r");
571 if (!filep) {
572 ERROR("%s: open failed", path);
573 return -ERR_CANT_OPEN_FILE;
574 }
575 if (fscanf(filep, "%d", &value) != 1) {
576 ERROR("%s: failed to parse number from file", path);
577 return -ERR_CANT_READ_NUMBER;
578 }
579 fclose(filep);
580 return value;
581 }
583 /*
584 * cpu_is_first_sibling_in_core(cpu)
585 * return 1 if given CPU is 1st HT sibling in the core
586 */
587 static int
588 cpu_is_first_sibling_in_core(int cpu)
589 {
590 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
591 }
593 /*
594 * cpu_is_first_core_in_package(cpu)
595 * return 1 if given CPU is 1st core in package
596 */
597 static int
598 cpu_is_first_core_in_package(int cpu)
599 {
600 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
601 }
603 static int
604 get_physical_package_id(int cpu)
605 {
606 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
607 }
609 static int
610 get_core_id(int cpu)
611 {
612 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
613 }
615 static int
616 get_num_ht_siblings(int cpu)
617 {
618 char path[80];
619 FILE *filep;
620 int sib1, sib2;
621 int matches;
622 char character;
624 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
625 filep = fopen(path, "r");
626 if (!filep) {
627 ERROR("%s: open failed", path);
628 return -ERR_CANT_OPEN_FILE;
629 }
630 /*
631 * file format:
632 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
633 * otherwinse 1 sibling (self).
634 */
635 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
637 fclose(filep);
639 if (matches == 3)
640 return 2;
641 else
642 return 1;
643 }
645 /*
646 * run func(thread, core, package) in topology order
647 * skip non-present cpus
648 */
651 static int __attribute__((warn_unused_result))
652 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
653 struct pkg_data *, struct thread_data *, struct core_data *,
654 struct pkg_data *), struct thread_data *thread_base,
655 struct core_data *core_base, struct pkg_data *pkg_base,
656 struct thread_data *thread_base2, struct core_data *core_base2,
657 struct pkg_data *pkg_base2)
658 {
659 int retval, pkg_no, core_no, thread_no;
661 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
662 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
663 for (thread_no = 0; thread_no <
664 topo.num_threads_per_core; ++thread_no) {
665 struct thread_data *t, *t2;
666 struct core_data *c, *c2;
667 struct pkg_data *p, *p2;
669 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
671 if (cpu_is_not_present(t->cpu_id))
672 continue;
674 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
676 c = GET_CORE(core_base, core_no, pkg_no);
677 c2 = GET_CORE(core_base2, core_no, pkg_no);
679 p = GET_PKG(pkg_base, pkg_no);
680 p2 = GET_PKG(pkg_base2, pkg_no);
682 retval = func(t, c, p, t2, c2, p2);
683 if (retval)
684 return retval;
685 }
686 }
687 }
688 return 0;
689 }
691 /*
692 * run func(cpu) on every cpu in /proc/stat
693 * return max_cpu number
694 */
695 static int __attribute__((warn_unused_result))
696 for_all_proc_cpus(int (func)(int))
697 {
698 FILE *fp;
699 int cpu_num;
700 int retval;
702 fp = fopen(proc_stat, "r");
703 if (!fp) {
704 ERROR("%s: open failed", proc_stat);
705 return -ERR_CANT_OPEN_FILE;
706 }
708 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
709 if (retval != 0) {
710 ERROR("%s: failed to parse format", proc_stat);
711 return -ERR_CANT_READ_PROC_STAT;
712 }
714 while (1) {
715 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
716 if (retval != 1)
717 break;
719 retval = func(cpu_num);
720 if (retval) {
721 fclose(fp);
722 return(retval);
723 }
724 }
725 fclose(fp);
726 return 0;
727 }
729 /*
730 * count_cpus()
731 * remember the last one seen, it will be the max
732 */
733 static int
734 count_cpus(int cpu)
735 {
736 if (topo.max_cpu_num < cpu)
737 topo.max_cpu_num = cpu;
739 topo.num_cpus += 1;
740 return 0;
741 }
742 static int
743 mark_cpu_present(int cpu)
744 {
745 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
746 return 0;
747 }
750 static void
751 turbostat_submit (const char *plugin_instance,
752 const char *type, const char *type_instance,
753 gauge_t value)
754 {
755 value_list_t vl = VALUE_LIST_INIT;
756 value_t v;
758 v.gauge = value;
759 vl.values = &v;
760 vl.values_len = 1;
761 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
762 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
763 if (plugin_instance != NULL)
764 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
765 sstrncpy (vl.type, type, sizeof (vl.type));
766 if (type_instance != NULL)
767 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
769 plugin_dispatch_values (&vl);
770 }
772 /*
773 * column formatting convention & formats
774 * package: "pk" 2 columns %2d
775 * core: "cor" 3 columns %3d
776 * CPU: "CPU" 3 columns %3d
777 * Pkg_W: %6.2
778 * Cor_W: %6.2
779 * GFX_W: %5.2
780 * RAM_W: %5.2
781 * GHz: "GHz" 3 columns %3.2
782 * TSC: "TSC" 3 columns %3.2
783 * SMI: "SMI" 4 columns %4d
784 * percentage " %pc3" %6.2
785 * Perf Status percentage: %5.2
786 * "CTMP" 4 columns %4d
787 */
788 #define NAME_LEN 12
789 static int
790 submit_counters(struct thread_data *t, struct core_data *c,
791 struct pkg_data *p)
792 {
793 char name[NAME_LEN];
794 double interval_float;
796 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
798 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
800 if (!skip_c0)
801 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
802 if (!skip_c1)
803 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
805 /* GHz */
806 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
807 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
809 /* SMI */
810 turbostat_submit(NULL, "current", name, t->smi_count);
812 /* print per-core data only for 1st thread in core */
813 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
814 goto done;
816 snprintf(name, NAME_LEN, "core%02d", c->core_id);
818 if (do_core_cstate & (1 << 3))
819 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
820 if (do_core_cstate & (1 << 6))
821 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
822 if (do_core_cstate & (1 << 7))
823 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
825 if (do_dts)
826 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
828 /* print per-package data only for 1st core in package */
829 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
830 goto done;
832 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
834 if (do_ptm)
835 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
837 if (do_pkg_cstate & (1 << 2))
838 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
839 if (do_pkg_cstate & (1 << 3))
840 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
841 if (do_pkg_cstate & (1 << 6))
842 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
843 if (do_pkg_cstate & (1 << 7))
844 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
845 if (do_pkg_cstate & (1 << 8))
846 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
847 if (do_pkg_cstate & (1 << 9))
848 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
849 if (do_pkg_cstate & (1 << 10))
850 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
852 if (do_rapl) {
853 if (do_rapl & RAPL_PKG)
854 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
855 if (do_rapl & RAPL_CORES)
856 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
857 if (do_rapl & RAPL_GFX)
858 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
859 if (do_rapl & RAPL_DRAM)
860 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
861 }
862 done:
863 return 0;
864 }
866 static int
867 turbostat_read(user_data_t * not_used)
868 {
869 int ret;
871 if (!allocated) {
872 if ((ret = setup_all_buffers()) < 0)
873 return ret;
874 }
876 if (for_all_proc_cpus(cpu_is_not_present)) {
877 free_all_buffers();
878 if ((ret = setup_all_buffers()) < 0)
879 return ret;
880 if (for_all_proc_cpus(cpu_is_not_present))
881 return -ERR_CPU_NOT_PRESENT;
882 }
884 if (!initialized) {
885 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
886 return ret;
887 gettimeofday(&tv_even, (struct timezone *)NULL);
888 is_even = 1;
889 initialized = 1;
890 return 0;
891 }
893 if (is_even) {
894 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
895 return ret;
896 gettimeofday(&tv_odd, (struct timezone *)NULL);
897 is_even = 0;
898 timersub(&tv_odd, &tv_even, &tv_delta);
899 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
900 return ret;
901 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
902 return ret;
903 } else {
904 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
905 return ret;
906 gettimeofday(&tv_even, (struct timezone *)NULL);
907 is_even = 1;
908 timersub(&tv_even, &tv_odd, &tv_delta);
909 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
910 return ret;
911 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
912 return ret;
913 }
914 return 0;
915 }
917 static int __attribute__((warn_unused_result))
918 check_dev_msr()
919 {
920 struct stat sb;
922 if (stat("/dev/cpu/0/msr", &sb)) {
923 ERROR("no /dev/cpu/0/msr\n"
924 "Try \"# modprobe msr\"");
925 return -ERR_NO_MSR;
926 }
927 return 0;
928 }
930 static int __attribute__((warn_unused_result))
931 check_super_user()
932 {
933 if (getuid() != 0) {
934 ERROR("must be root");
935 return -ERR_NOT_ROOT;
936 }
937 return 0;
938 }
940 /*
941 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
942 * the Thermal Control Circuit (TCC) activates.
943 * This is usually equal to tjMax.
944 *
945 * Older processors do not have this MSR, so there we guess,
946 * but also allow cmdline over-ride with -T.
947 *
948 * Several MSR temperature values are in units of degrees-C
949 * below this value, including the Digital Thermal Sensor (DTS),
950 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
951 */
952 static int __attribute__((warn_unused_result))
953 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
954 {
955 unsigned long long msr;
956 unsigned int target_c_local;
957 int cpu;
959 /* tcc_activation_temp is used only for dts or ptm */
960 if (!(do_dts || do_ptm))
961 return 0;
963 /* this is a per-package concept */
964 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
965 return 0;
967 cpu = t->cpu_id;
968 if (cpu_migrate(cpu)) {
969 ERROR("Could not migrate to CPU %d\n", cpu);
970 return -ERR_CPU_MIGRATE;
971 }
973 if (tcc_activation_temp_override != 0) {
974 tcc_activation_temp = tcc_activation_temp_override;
975 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
976 cpu, tcc_activation_temp);
977 return 0;
978 }
980 if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
981 goto guess;
983 target_c_local = (msr >> 16) & 0x7F;
985 if (target_c_local < 85 || target_c_local > 127)
986 goto guess;
988 tcc_activation_temp = target_c_local;
990 return 0;
992 guess:
993 tcc_activation_temp = TJMAX_DEFAULT;
994 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
995 cpu, tcc_activation_temp);
997 return 0;
998 }
1000 /*
1001 * Identify the functionality of the CPU
1002 */
1003 static int __attribute__((warn_unused_result))
1004 probe_cpu()
1005 {
1006 unsigned int eax, ebx, ecx, edx, max_level;
1007 unsigned int fms, family, model;
1009 /* CPUID(0):
1010 * - EAX: Maximum Input Value for Basic CPUID Information
1011 * - EBX: "Genu" (0x756e6547)
1012 * - EDX: "ineI" (0x49656e69)
1013 * - ECX: "ntel" (0x6c65746e)
1014 */
1015 max_level = ebx = ecx = edx = 0;
1016 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1017 if (ebx != 0x756e6547 && edx != 0x49656e69 && ecx != 0x6c65746e) {
1018 ERROR("Unsupported CPU");
1019 return -UNSUPPORTED_CPU;
1020 }
1022 /* CPUID(1):
1023 * - EAX: Version Information: Type, Family, Model, and Stepping ID
1024 * + 4-7: Model ID
1025 * + 8-11: Family ID
1026 * + 12-13: Processor type
1027 * + 16-19: Extended Model ID
1028 * + 20-27: Extended Family ID
1029 * - EDX: Feature Information:
1030 * + 5: Support for MSR read/write operations
1031 */
1032 fms = ebx = ecx = edx = 0;
1033 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1034 family = (fms >> 8) & 0xf;
1035 model = (fms >> 4) & 0xf;
1036 if (family == 0xf)
1037 family += (fms >> 20) & 0xf;
1038 if (family == 6 || family == 0xf)
1039 model += ((fms >> 16) & 0xf) << 4;
1040 if (!(edx & (1 << 5))) {
1041 ERROR("CPUID: no MSR");
1042 return -ERR_NO_MSR;
1043 }
1045 /*
1046 * CPUID(0x80000000):
1047 * - EAX: Maximum Input Value for Extended Function CPUID Information
1048 *
1049 * This allows us to verify if the CPUID(0x80000007) can be called
1050 *
1051 * This check is valid for both Intel and AMD.
1052 */
1053 max_level = ebx = ecx = edx = 0;
1054 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1055 if (max_level < 0x80000007) {
1056 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1057 return -ERR_NO_INVARIANT_TSC;
1058 }
1060 /*
1061 * CPUID(0x80000007):
1062 * - EDX:
1063 * + 8: Invariant TSC available if set
1064 *
1065 * This check is valid for both Intel and AMD
1066 */
1067 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1068 if (!(edx & (1 << 8))) {
1069 ERROR("No invariant TSC");
1070 return -ERR_NO_INVARIANT_TSC;
1071 }
1073 /*
1074 * CPUID(6):
1075 * - EAX:
1076 * + 0: Digital temperature sensor is supported if set
1077 * + 6: Package thermal management is supported if set
1078 * - ECX:
1079 * + 0: Hardware Coordination Feedback Capability (Presence of IA32_MPERF and IA32_APERF).
1080 * + 3: The processor supports performance-energy bias preference if set.
1081 * It also implies the presence of a new architectural MSR called IA32_ENERGY_PERF_BIAS
1082 *
1083 * This check is valid for both Intel and AMD
1084 */
1085 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1086 do_dts = eax & (1 << 0);
1087 do_ptm = eax & (1 << 6);
1088 if (!(ecx & (1 << 0))) {
1089 ERROR("No APERF");
1090 return -ERR_NO_APERF;
1091 }
1093 /*
1094 * Enable or disable C states depending on the model and family
1095 */
1096 if (family == 6) {
1097 switch (model) {
1098 /* Atom (partial) */
1099 case 0x27:
1100 do_core_cstate = 0;
1101 do_pkg_cstate = (1 << 2) | (1 << 4) | (1 << 6);
1102 break;
1103 /* Silvermont */
1104 case 0x37: /* BYT */
1105 case 0x4A:
1106 case 0x4D: /* AVN */
1107 case 0x5A:
1108 case 0x5D:
1109 do_core_cstate = (1 << 1) | (1 << 6);
1110 do_pkg_cstate = (1 << 6);
1111 break;
1112 /* Nehalem */
1113 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1114 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1115 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1116 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1117 do_core_cstate = (1 << 3) | (1 << 6);
1118 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1119 break;
1120 /* Westmere */
1121 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1122 case 0x2C: /* Westmere EP - Gulftown */
1123 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1124 do_core_cstate = (1 << 3) | (1 << 6);
1125 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1126 break;
1127 /* Sandy Bridge */
1128 case 0x2A: /* SNB */
1129 case 0x2D: /* SNB Xeon */
1130 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1131 do_pkg_cstate = (1 << 2) | (1 << 3) | (1 << 6) | (1 << 7);
1132 break;
1133 /* Ivy Bridge */
1134 case 0x3A: /* IVB */
1135 case 0x3E: /* IVB Xeon */
1136 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1137 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1138 break;
1139 /* Haswell Bridge */
1140 case 0x3C: /* HSW */
1141 case 0x3F: /* HSW */
1142 case 0x46: /* HSW */
1143 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1144 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1145 break;
1146 case 0x45: /* HSW */
1147 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1148 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1149 break;
1150 /* Broadwel */
1151 case 0x4F: /* BDW */
1152 case 0x56: /* BDX-DE */
1153 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1154 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1155 break;
1156 case 0x3D: /* BDW */
1157 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1158 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1159 break;
1160 default:
1161 ERROR("Unsupported CPU");
1162 }
1163 switch (model) {
1164 case 0x2A:
1165 case 0x3A:
1166 case 0x3C:
1167 case 0x45:
1168 case 0x46:
1169 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_GFX;
1170 break;
1171 case 0x3F:
1172 do_rapl = RAPL_PKG | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1173 break;
1174 case 0x2D:
1175 case 0x3E:
1176 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1177 break;
1178 case 0x37:
1179 case 0x4D:
1180 do_rapl = RAPL_PKG | RAPL_CORES;
1181 break;
1182 default:
1183 do_rapl = 0;
1184 }
1185 } else {
1186 ERROR("Unsupported CPU");
1187 return -UNSUPPORTED_CPU;
1188 }
1190 if (do_rapl) {
1191 unsigned long msr;
1192 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1193 return 0;
1195 if (model == 0x37)
1196 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1197 else
1198 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1199 }
1201 return 0;
1202 }
1206 static int __attribute__((warn_unused_result))
1207 topology_probe()
1208 {
1209 int i;
1210 int ret;
1211 int max_core_id = 0;
1212 int max_package_id = 0;
1213 int max_siblings = 0;
1214 struct cpu_topology {
1215 int core_id;
1216 int physical_package_id;
1217 } *cpus;
1219 /* Initialize num_cpus, max_cpu_num */
1220 topo.num_cpus = 0;
1221 topo.max_cpu_num = 0;
1222 ret = for_all_proc_cpus(count_cpus);
1223 if (ret < 0)
1224 return ret;
1226 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1228 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1229 if (cpus == NULL) {
1230 ERROR("calloc cpus");
1231 return -ERR_CALLOC;
1232 }
1234 /*
1235 * Allocate and initialize cpu_present_set
1236 */
1237 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1238 if (cpu_present_set == NULL) {
1239 free(cpus);
1240 ERROR("CPU_ALLOC");
1241 return -ERR_CPU_ALLOC;
1242 }
1243 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1244 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1245 ret = for_all_proc_cpus(mark_cpu_present);
1246 if (ret < 0) {
1247 free(cpus);
1248 return ret;
1249 }
1251 /*
1252 * Allocate and initialize cpu_affinity_set
1253 */
1254 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1255 if (cpu_affinity_set == NULL) {
1256 free(cpus);
1257 ERROR("CPU_ALLOC");
1258 return -ERR_CPU_ALLOC;
1259 }
1260 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1261 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1264 /*
1265 * For online cpus
1266 * find max_core_id, max_package_id
1267 */
1268 for (i = 0; i <= topo.max_cpu_num; ++i) {
1269 int siblings;
1271 if (cpu_is_not_present(i)) {
1272 //if (verbose > 1)
1273 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1274 continue;
1275 }
1276 cpus[i].core_id = get_core_id(i);
1277 if (cpus[i].core_id < 0)
1278 return cpus[i].core_id;
1279 if (cpus[i].core_id > max_core_id)
1280 max_core_id = cpus[i].core_id;
1282 cpus[i].physical_package_id = get_physical_package_id(i);
1283 if (cpus[i].physical_package_id < 0)
1284 return cpus[i].physical_package_id;
1285 if (cpus[i].physical_package_id > max_package_id)
1286 max_package_id = cpus[i].physical_package_id;
1288 siblings = get_num_ht_siblings(i);
1289 if (siblings < 0)
1290 return siblings;
1291 if (siblings > max_siblings)
1292 max_siblings = siblings;
1293 DEBUG("cpu %d pkg %d core %d\n",
1294 i, cpus[i].physical_package_id, cpus[i].core_id);
1295 }
1296 topo.num_cores_per_pkg = max_core_id + 1;
1297 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1298 max_core_id, topo.num_cores_per_pkg);
1300 topo.num_packages = max_package_id + 1;
1301 DEBUG("max_package_id %d, sizing for %d packages\n",
1302 max_package_id, topo.num_packages);
1304 topo.num_threads_per_core = max_siblings;
1305 DEBUG("max_siblings %d\n", max_siblings);
1307 free(cpus);
1308 return 0;
1309 }
1311 static int
1312 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1313 {
1314 int i;
1316 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1317 topo.num_packages, sizeof(struct thread_data));
1318 if (*t == NULL)
1319 goto error;
1321 for (i = 0; i < topo.num_threads_per_core *
1322 topo.num_cores_per_pkg * topo.num_packages; i++)
1323 (*t)[i].cpu_id = -1;
1325 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1326 sizeof(struct core_data));
1327 if (*c == NULL)
1328 goto error;
1330 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1331 (*c)[i].core_id = -1;
1333 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1334 if (*p == NULL)
1335 goto error;
1337 for (i = 0; i < topo.num_packages; i++)
1338 (*p)[i].package_id = i;
1340 return 0;
1341 error:
1342 ERROR("calloc counters");
1343 return -ERR_CALLOC;
1344 }
1345 /*
1346 * init_counter()
1347 *
1348 * set cpu_id, core_num, pkg_num
1349 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1350 *
1351 * increment topo.num_cores when 1st core in pkg seen
1352 */
1353 static int
1354 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1355 struct pkg_data *pkg_base, int thread_num, int core_num,
1356 int pkg_num, int cpu_id)
1357 {
1358 int ret;
1359 struct thread_data *t;
1360 struct core_data *c;
1361 struct pkg_data *p;
1363 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1364 c = GET_CORE(core_base, core_num, pkg_num);
1365 p = GET_PKG(pkg_base, pkg_num);
1367 t->cpu_id = cpu_id;
1368 if (thread_num == 0) {
1369 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1370 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1371 return ret;
1372 } else if (ret != 0) {
1373 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1374 }
1375 }
1377 c->core_id = core_num;
1378 p->package_id = pkg_num;
1380 return 0;
1381 }
1384 static int
1385 initialize_counters(int cpu_id)
1386 {
1387 int my_thread_id, my_core_id, my_package_id;
1388 int ret;
1390 my_package_id = get_physical_package_id(cpu_id);
1391 if (my_package_id < 0)
1392 return my_package_id;
1393 my_core_id = get_core_id(cpu_id);
1394 if (my_core_id < 0)
1395 return my_core_id;
1397 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1398 return ret;
1399 } else if (ret != 0) {
1400 my_thread_id = 0;
1401 topo.num_cores++;
1402 } else {
1403 my_thread_id = 1;
1404 }
1406 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1407 if (ret < 0)
1408 return ret;
1409 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1410 if (ret < 0)
1411 return ret;
1412 return 0;
1413 }
1415 #define DO_OR_GOTO_ERR(something) \
1416 do { \
1417 ret = (something); \
1418 if (ret < 0) \
1419 goto err; \
1420 } while (0)
1422 static int setup_all_buffers(void)
1423 {
1424 int ret;
1426 DO_OR_GOTO_ERR(topology_probe());
1427 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1428 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1429 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1431 allocated = 1;
1432 return 0;
1433 err:
1434 free_all_buffers();
1435 return ret;
1436 }
1438 static int
1439 turbostat_init(void)
1440 {
1441 int ret;
1443 DO_OR_GOTO_ERR(check_super_user());
1444 DO_OR_GOTO_ERR(probe_cpu());
1445 DO_OR_GOTO_ERR(check_dev_msr());
1446 DO_OR_GOTO_ERR(setup_all_buffers());
1447 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1449 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1451 return 0;
1452 err:
1453 free_all_buffers();
1454 return ret;
1455 }
1457 void module_register(void);
1458 void module_register(void)
1459 {
1460 plugin_register_init(PLUGIN_NAME, turbostat_init);
1461 }