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_MSR,
204 ERR_CANT_OPEN_FILE,
205 ERR_CANT_READ_NUMBER,
206 ERR_CANT_READ_PROC_STAT,
207 ERR_NO_INVARIANT_TSC,
208 ERR_NO_APERF,
209 ERR_CALLOC,
210 ERR_CPU_ALLOC,
211 ERR_NOT_ROOT,
212 UNSUPPORTED_CPU,
213 };
215 static int setup_all_buffers(void);
217 static int
218 cpu_is_not_present(int cpu)
219 {
220 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
221 }
222 /*
223 * run func(thread, core, package) in topology order
224 * skip non-present cpus
225 */
227 static int __attribute__((warn_unused_result))
228 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
229 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
230 {
231 int retval, pkg_no, core_no, thread_no;
233 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
234 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
235 for (thread_no = 0; thread_no <
236 topo.num_threads_per_core; ++thread_no) {
237 struct thread_data *t;
238 struct core_data *c;
239 struct pkg_data *p;
241 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
243 if (cpu_is_not_present(t->cpu_id))
244 continue;
246 c = GET_CORE(core_base, core_no, pkg_no);
247 p = GET_PKG(pkg_base, pkg_no);
249 retval = func(t, c, p);
250 if (retval)
251 return retval;
252 }
253 }
254 }
255 return 0;
256 }
258 static int __attribute__((warn_unused_result))
259 cpu_migrate(int cpu)
260 {
261 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
262 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
263 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
264 return -ERR_CPU_MIGRATE;
265 else
266 return 0;
267 }
269 static int __attribute__((warn_unused_result))
270 open_msr(int cpu)
271 {
272 char pathname[32];
274 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
275 return open(pathname, O_RDONLY);
276 }
278 static int __attribute__((warn_unused_result))
279 read_msr(int fd, off_t offset, unsigned long long *msr)
280 {
281 ssize_t retval;
283 retval = pread(fd, msr, sizeof *msr, offset);
285 if (retval != sizeof *msr) {
286 ERROR ("MSR offset 0x%llx read failed", (unsigned long long)offset);
287 return -1;
288 }
289 return 0;
290 }
292 static int __attribute__((warn_unused_result))
293 get_msr(int cpu, off_t offset, unsigned long long *msr)
294 {
295 ssize_t retval;
296 int fd;
298 fd = open_msr(cpu);
299 if (fd < 0)
300 return -1;
301 retval = read_msr(fd, offset, msr);
302 close(fd);
303 return retval;
304 }
306 #define DELTA_WRAP32(new, old) \
307 if (new > old) { \
308 old = new - old; \
309 } else { \
310 old = 0x100000000 + new - old; \
311 }
313 static void
314 delta_package(struct pkg_data *new, struct pkg_data *old)
315 {
316 old->pc2 = new->pc2 - old->pc2;
317 old->pc3 = new->pc3 - old->pc3;
318 old->pc6 = new->pc6 - old->pc6;
319 old->pc7 = new->pc7 - old->pc7;
320 old->pc8 = new->pc8 - old->pc8;
321 old->pc9 = new->pc9 - old->pc9;
322 old->pc10 = new->pc10 - old->pc10;
323 old->pkg_temp_c = new->pkg_temp_c;
325 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
326 DELTA_WRAP32(new->energy_cores, old->energy_cores);
327 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
328 DELTA_WRAP32(new->energy_dram, old->energy_dram);
329 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
330 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
331 }
333 static void
334 delta_core(struct core_data *new, struct core_data *old)
335 {
336 old->c3 = new->c3 - old->c3;
337 old->c6 = new->c6 - old->c6;
338 old->c7 = new->c7 - old->c7;
339 old->core_temp_c = new->core_temp_c;
340 }
342 /*
343 * old = new - old
344 */
345 static int __attribute__((warn_unused_result))
346 delta_thread(struct thread_data *new, struct thread_data *old,
347 struct core_data *core_delta)
348 {
349 old->tsc = new->tsc - old->tsc;
351 /* check for TSC < 1 Mcycles over interval */
352 if (old->tsc < (1000 * 1000)) {
353 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
354 "You can disable all c-states by booting with \"idle=poll\"\n"
355 "or just the deep ones with \"processor.max_cstate=1\"");
356 return -1;
357 }
359 old->c1 = new->c1 - old->c1;
361 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
362 old->aperf = new->aperf - old->aperf;
363 old->mperf = new->mperf - old->mperf;
364 } else {
366 if (!aperf_mperf_unstable) {
367 WARNING("%s: APERF or MPERF went backwards *\n", progname);
368 WARNING("* Frequency results do not cover entire interval *\n");
369 WARNING("* fix this by running Linux-2.6.30 or later *\n");
371 aperf_mperf_unstable = 1;
372 }
373 /*
374 * mperf delta is likely a huge "positive" number
375 * can not use it for calculating c0 time
376 */
377 skip_c0 = 1;
378 skip_c1 = 1;
379 }
382 /*
383 * As counter collection is not atomic,
384 * it is possible for mperf's non-halted cycles + idle states
385 * to exceed TSC's all cycles: show c1 = 0% in that case.
386 */
387 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
388 old->c1 = 0;
389 else {
390 /* normal case, derive c1 */
391 old->c1 = old->tsc - old->mperf - core_delta->c3
392 - core_delta->c6 - core_delta->c7;
393 }
395 if (old->mperf == 0) {
396 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
397 old->mperf = 1; /* divide by 0 protection */
398 }
400 old->smi_count = new->smi_count - old->smi_count;
402 return 0;
403 }
405 static int __attribute__((warn_unused_result))
406 delta_cpu(struct thread_data *t, struct core_data *c,
407 struct pkg_data *p, struct thread_data *t2,
408 struct core_data *c2, struct pkg_data *p2)
409 {
410 int ret;
412 /* calculate core delta only for 1st thread in core */
413 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
414 delta_core(c, c2);
416 /* always calculate thread delta */
417 ret = delta_thread(t, t2, c2); /* c2 is core delta */
418 if (ret != 0)
419 return ret;
421 /* calculate package delta only for 1st core in package */
422 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
423 delta_package(p, p2);
425 return 0;
426 }
428 /*
429 * get_counters(...)
430 * migrate to cpu
431 * acquire and record local counters for that cpu
432 */
433 static int __attribute__((warn_unused_result))
434 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
435 {
436 int cpu = t->cpu_id;
437 unsigned long long msr;
438 int msr_fd;
439 int retval = 0;
441 if (cpu_migrate(cpu)) {
442 WARNING("Could not migrate to CPU %d\n", cpu);
443 return -ERR_CPU_MIGRATE;
444 }
446 msr_fd = open_msr(cpu);
447 if (msr_fd < 0)
448 return -ERR_CANT_OPEN_MSR;
450 #define READ_MSR(msr, dst) \
451 do { \
452 if (read_msr(msr_fd, msr, dst)) { \
453 retval = -ERR_##msr; \
454 goto out; \
455 } \
456 } while (0)
458 READ_MSR(MSR_IA32_TSC, &t->tsc);
460 READ_MSR(MSR_IA32_APERF, &t->aperf);
461 READ_MSR(MSR_IA32_MPERF, &t->mperf);
463 READ_MSR(MSR_SMI_COUNT, &msr);
464 t->smi_count = msr & 0xFFFFFFFF;
466 /* collect core counters only for 1st thread in core */
467 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) {
468 retval = 0;
469 goto out;
470 }
472 if (do_core_cstate & (1 << 3))
473 READ_MSR(MSR_CORE_C3_RESIDENCY, &c->c3);
474 if (do_core_cstate & (1 << 6))
475 READ_MSR(MSR_CORE_C6_RESIDENCY, &c->c6);
476 if (do_core_cstate & (1 << 7))
477 READ_MSR(MSR_CORE_C7_RESIDENCY, &c->c7);
479 if (do_dts) {
480 READ_MSR(MSR_IA32_THERM_STATUS, &msr);
481 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
482 }
484 /* collect package counters only for 1st core in package */
485 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) {
486 retval = 0;
487 goto out;
488 }
490 if (do_pkg_cstate & (1 << 2))
491 READ_MSR(MSR_PKG_C2_RESIDENCY, &p->pc2);
492 if (do_pkg_cstate & (1 << 3))
493 READ_MSR(MSR_PKG_C3_RESIDENCY, &p->pc3);
494 if (do_pkg_cstate & (1 << 6))
495 READ_MSR(MSR_PKG_C6_RESIDENCY, &p->pc6);
496 if (do_pkg_cstate & (1 << 7))
497 READ_MSR(MSR_PKG_C7_RESIDENCY, &p->pc7);
498 if (do_pkg_cstate & (1 << 8))
499 READ_MSR(MSR_PKG_C8_RESIDENCY, &p->pc8);
500 if (do_pkg_cstate & (1 << 9))
501 READ_MSR(MSR_PKG_C9_RESIDENCY, &p->pc9);
502 if (do_pkg_cstate & (1 << 10))
503 READ_MSR(MSR_PKG_C10_RESIDENCY, &p->pc10);
505 if (do_rapl & RAPL_PKG) {
506 READ_MSR(MSR_PKG_ENERGY_STATUS, &msr);
507 p->energy_pkg = msr & 0xFFFFFFFF;
508 }
509 if (do_rapl & RAPL_CORES) {
510 READ_MSR(MSR_PP0_ENERGY_STATUS, &msr);
511 p->energy_cores = msr & 0xFFFFFFFF;
512 }
513 if (do_rapl & RAPL_DRAM) {
514 READ_MSR(MSR_DRAM_ENERGY_STATUS, &msr);
515 p->energy_dram = msr & 0xFFFFFFFF;
516 }
517 if (do_rapl & RAPL_GFX) {
518 READ_MSR(MSR_PP1_ENERGY_STATUS, &msr);
519 p->energy_gfx = msr & 0xFFFFFFFF;
520 }
521 if (do_rapl & RAPL_PKG_PERF_STATUS) {
522 READ_MSR(MSR_PKG_PERF_STATUS, &msr);
523 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
524 }
525 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
526 READ_MSR(MSR_DRAM_PERF_STATUS, &msr);
527 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
528 }
529 if (do_ptm) {
530 READ_MSR(MSR_IA32_PACKAGE_THERM_STATUS, &msr);
531 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
532 }
534 out:
535 close(msr_fd);
536 return retval;
537 }
539 static void
540 free_all_buffers(void)
541 {
542 allocated = 0;
543 initialized = 0;
545 CPU_FREE(cpu_present_set);
546 cpu_present_set = NULL;
547 cpu_present_set = 0;
549 CPU_FREE(cpu_affinity_set);
550 cpu_affinity_set = NULL;
551 cpu_affinity_setsize = 0;
553 free(thread_even);
554 free(core_even);
555 free(package_even);
557 thread_even = NULL;
558 core_even = NULL;
559 package_even = NULL;
561 free(thread_odd);
562 free(core_odd);
563 free(package_odd);
565 thread_odd = NULL;
566 core_odd = NULL;
567 package_odd = NULL;
568 }
570 /*
571 * Parse a file containing a single int.
572 */
573 static int __attribute__ ((format(printf,1,2)))
574 parse_int_file(const char *fmt, ...)
575 {
576 va_list args;
577 char path[PATH_MAX];
578 FILE *filep;
579 int value;
581 va_start(args, fmt);
582 vsnprintf(path, sizeof(path), fmt, args);
583 va_end(args);
584 filep = fopen(path, "r");
585 if (!filep) {
586 ERROR("%s: open failed", path);
587 return -ERR_CANT_OPEN_FILE;
588 }
589 if (fscanf(filep, "%d", &value) != 1) {
590 ERROR("%s: failed to parse number from file", path);
591 return -ERR_CANT_READ_NUMBER;
592 }
593 fclose(filep);
594 return value;
595 }
597 /*
598 * cpu_is_first_sibling_in_core(cpu)
599 * return 1 if given CPU is 1st HT sibling in the core
600 */
601 static int
602 cpu_is_first_sibling_in_core(int cpu)
603 {
604 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
605 }
607 /*
608 * cpu_is_first_core_in_package(cpu)
609 * return 1 if given CPU is 1st core in package
610 */
611 static int
612 cpu_is_first_core_in_package(int cpu)
613 {
614 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
615 }
617 static int
618 get_physical_package_id(int cpu)
619 {
620 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
621 }
623 static int
624 get_core_id(int cpu)
625 {
626 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
627 }
629 static int
630 get_num_ht_siblings(int cpu)
631 {
632 char path[80];
633 FILE *filep;
634 int sib1, sib2;
635 int matches;
636 char character;
638 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
639 filep = fopen(path, "r");
640 if (!filep) {
641 ERROR("%s: open failed", path);
642 return -ERR_CANT_OPEN_FILE;
643 }
644 /*
645 * file format:
646 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
647 * otherwinse 1 sibling (self).
648 */
649 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
651 fclose(filep);
653 if (matches == 3)
654 return 2;
655 else
656 return 1;
657 }
659 /*
660 * run func(thread, core, package) in topology order
661 * skip non-present cpus
662 */
665 static int __attribute__((warn_unused_result))
666 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
667 struct pkg_data *, struct thread_data *, struct core_data *,
668 struct pkg_data *), struct thread_data *thread_base,
669 struct core_data *core_base, struct pkg_data *pkg_base,
670 struct thread_data *thread_base2, struct core_data *core_base2,
671 struct pkg_data *pkg_base2)
672 {
673 int retval, pkg_no, core_no, thread_no;
675 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
676 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
677 for (thread_no = 0; thread_no <
678 topo.num_threads_per_core; ++thread_no) {
679 struct thread_data *t, *t2;
680 struct core_data *c, *c2;
681 struct pkg_data *p, *p2;
683 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
685 if (cpu_is_not_present(t->cpu_id))
686 continue;
688 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
690 c = GET_CORE(core_base, core_no, pkg_no);
691 c2 = GET_CORE(core_base2, core_no, pkg_no);
693 p = GET_PKG(pkg_base, pkg_no);
694 p2 = GET_PKG(pkg_base2, pkg_no);
696 retval = func(t, c, p, t2, c2, p2);
697 if (retval)
698 return retval;
699 }
700 }
701 }
702 return 0;
703 }
705 /*
706 * run func(cpu) on every cpu in /proc/stat
707 * return max_cpu number
708 */
709 static int __attribute__((warn_unused_result))
710 for_all_proc_cpus(int (func)(int))
711 {
712 FILE *fp;
713 int cpu_num;
714 int retval;
716 fp = fopen(proc_stat, "r");
717 if (!fp) {
718 ERROR("%s: open failed", proc_stat);
719 return -ERR_CANT_OPEN_FILE;
720 }
722 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
723 if (retval != 0) {
724 ERROR("%s: failed to parse format", proc_stat);
725 return -ERR_CANT_READ_PROC_STAT;
726 }
728 while (1) {
729 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
730 if (retval != 1)
731 break;
733 retval = func(cpu_num);
734 if (retval) {
735 fclose(fp);
736 return(retval);
737 }
738 }
739 fclose(fp);
740 return 0;
741 }
743 /*
744 * count_cpus()
745 * remember the last one seen, it will be the max
746 */
747 static int
748 count_cpus(int cpu)
749 {
750 if (topo.max_cpu_num < cpu)
751 topo.max_cpu_num = cpu;
753 topo.num_cpus += 1;
754 return 0;
755 }
756 static int
757 mark_cpu_present(int cpu)
758 {
759 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
760 return 0;
761 }
764 static void
765 turbostat_submit (const char *plugin_instance,
766 const char *type, const char *type_instance,
767 gauge_t value)
768 {
769 value_list_t vl = VALUE_LIST_INIT;
770 value_t v;
772 v.gauge = value;
773 vl.values = &v;
774 vl.values_len = 1;
775 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
776 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
777 if (plugin_instance != NULL)
778 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
779 sstrncpy (vl.type, type, sizeof (vl.type));
780 if (type_instance != NULL)
781 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
783 plugin_dispatch_values (&vl);
784 }
786 /*
787 * column formatting convention & formats
788 * package: "pk" 2 columns %2d
789 * core: "cor" 3 columns %3d
790 * CPU: "CPU" 3 columns %3d
791 * Pkg_W: %6.2
792 * Cor_W: %6.2
793 * GFX_W: %5.2
794 * RAM_W: %5.2
795 * GHz: "GHz" 3 columns %3.2
796 * TSC: "TSC" 3 columns %3.2
797 * SMI: "SMI" 4 columns %4d
798 * percentage " %pc3" %6.2
799 * Perf Status percentage: %5.2
800 * "CTMP" 4 columns %4d
801 */
802 #define NAME_LEN 12
803 static int
804 submit_counters(struct thread_data *t, struct core_data *c,
805 struct pkg_data *p)
806 {
807 char name[NAME_LEN];
808 double interval_float;
810 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
812 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
814 if (!skip_c0)
815 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
816 if (!skip_c1)
817 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
819 /* GHz */
820 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
821 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
823 /* SMI */
824 turbostat_submit(NULL, "current", name, t->smi_count);
826 /* print per-core data only for 1st thread in core */
827 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
828 goto done;
830 snprintf(name, NAME_LEN, "core%02d", c->core_id);
832 if (do_core_cstate & (1 << 3))
833 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
834 if (do_core_cstate & (1 << 6))
835 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
836 if (do_core_cstate & (1 << 7))
837 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
839 if (do_dts)
840 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
842 /* print per-package data only for 1st core in package */
843 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
844 goto done;
846 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
848 if (do_ptm)
849 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
851 if (do_pkg_cstate & (1 << 2))
852 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
853 if (do_pkg_cstate & (1 << 3))
854 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
855 if (do_pkg_cstate & (1 << 6))
856 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
857 if (do_pkg_cstate & (1 << 7))
858 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
859 if (do_pkg_cstate & (1 << 8))
860 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
861 if (do_pkg_cstate & (1 << 9))
862 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
863 if (do_pkg_cstate & (1 << 10))
864 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
866 if (do_rapl) {
867 if (do_rapl & RAPL_PKG)
868 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
869 if (do_rapl & RAPL_CORES)
870 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
871 if (do_rapl & RAPL_GFX)
872 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
873 if (do_rapl & RAPL_DRAM)
874 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
875 }
876 done:
877 return 0;
878 }
880 static int
881 turbostat_read(user_data_t * not_used)
882 {
883 int ret;
885 if (!allocated) {
886 if ((ret = setup_all_buffers()) < 0)
887 return ret;
888 }
890 if (for_all_proc_cpus(cpu_is_not_present)) {
891 free_all_buffers();
892 if ((ret = setup_all_buffers()) < 0)
893 return ret;
894 if (for_all_proc_cpus(cpu_is_not_present))
895 return -ERR_CPU_NOT_PRESENT;
896 }
898 if (!initialized) {
899 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
900 return ret;
901 gettimeofday(&tv_even, (struct timezone *)NULL);
902 is_even = 1;
903 initialized = 1;
904 return 0;
905 }
907 if (is_even) {
908 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
909 return ret;
910 gettimeofday(&tv_odd, (struct timezone *)NULL);
911 is_even = 0;
912 timersub(&tv_odd, &tv_even, &tv_delta);
913 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
914 return ret;
915 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
916 return ret;
917 } else {
918 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
919 return ret;
920 gettimeofday(&tv_even, (struct timezone *)NULL);
921 is_even = 1;
922 timersub(&tv_even, &tv_odd, &tv_delta);
923 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
924 return ret;
925 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
926 return ret;
927 }
928 return 0;
929 }
931 static int __attribute__((warn_unused_result))
932 check_dev_msr()
933 {
934 struct stat sb;
936 if (stat("/dev/cpu/0/msr", &sb)) {
937 ERROR("no /dev/cpu/0/msr\n"
938 "Try \"# modprobe msr\"");
939 return -ERR_NO_MSR;
940 }
941 return 0;
942 }
944 static int __attribute__((warn_unused_result))
945 check_super_user()
946 {
947 if (getuid() != 0) {
948 ERROR("must be root");
949 return -ERR_NOT_ROOT;
950 }
951 return 0;
952 }
954 /*
955 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
956 * the Thermal Control Circuit (TCC) activates.
957 * This is usually equal to tjMax.
958 *
959 * Older processors do not have this MSR, so there we guess,
960 * but also allow cmdline over-ride with -T.
961 *
962 * Several MSR temperature values are in units of degrees-C
963 * below this value, including the Digital Thermal Sensor (DTS),
964 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
965 */
966 static int __attribute__((warn_unused_result))
967 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
968 {
969 unsigned long long msr;
970 unsigned int target_c_local;
971 int cpu;
973 /* tcc_activation_temp is used only for dts or ptm */
974 if (!(do_dts || do_ptm))
975 return 0;
977 /* this is a per-package concept */
978 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
979 return 0;
981 cpu = t->cpu_id;
982 if (cpu_migrate(cpu)) {
983 ERROR("Could not migrate to CPU %d\n", cpu);
984 return -ERR_CPU_MIGRATE;
985 }
987 if (tcc_activation_temp_override != 0) {
988 tcc_activation_temp = tcc_activation_temp_override;
989 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
990 cpu, tcc_activation_temp);
991 return 0;
992 }
994 if (get_msr(cpu, MSR_IA32_TEMPERATURE_TARGET, &msr))
995 goto guess;
997 target_c_local = (msr >> 16) & 0x7F;
999 if (target_c_local < 85 || target_c_local > 127)
1000 goto guess;
1002 tcc_activation_temp = target_c_local;
1004 return 0;
1006 guess:
1007 tcc_activation_temp = TJMAX_DEFAULT;
1008 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1009 cpu, tcc_activation_temp);
1011 return 0;
1012 }
1014 /*
1015 * Identify the functionality of the CPU
1016 */
1017 static int __attribute__((warn_unused_result))
1018 probe_cpu()
1019 {
1020 unsigned int eax, ebx, ecx, edx, max_level;
1021 unsigned int fms, family, model;
1023 /* CPUID(0):
1024 * - EAX: Maximum Input Value for Basic CPUID Information
1025 * - EBX: "Genu" (0x756e6547)
1026 * - EDX: "ineI" (0x49656e69)
1027 * - ECX: "ntel" (0x6c65746e)
1028 */
1029 max_level = ebx = ecx = edx = 0;
1030 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1031 if (ebx != 0x756e6547 && edx != 0x49656e69 && ecx != 0x6c65746e) {
1032 ERROR("Unsupported CPU");
1033 return -UNSUPPORTED_CPU;
1034 }
1036 /* CPUID(1):
1037 * - EAX: Version Information: Type, Family, Model, and Stepping ID
1038 * + 4-7: Model ID
1039 * + 8-11: Family ID
1040 * + 12-13: Processor type
1041 * + 16-19: Extended Model ID
1042 * + 20-27: Extended Family ID
1043 * - EDX: Feature Information:
1044 * + 5: Support for MSR read/write operations
1045 */
1046 fms = ebx = ecx = edx = 0;
1047 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1048 family = (fms >> 8) & 0xf;
1049 model = (fms >> 4) & 0xf;
1050 if (family == 0xf)
1051 family += (fms >> 20) & 0xf;
1052 if (family == 6 || family == 0xf)
1053 model += ((fms >> 16) & 0xf) << 4;
1054 if (!(edx & (1 << 5))) {
1055 ERROR("CPUID: no MSR");
1056 return -ERR_NO_MSR;
1057 }
1059 /*
1060 * CPUID(0x80000000):
1061 * - EAX: Maximum Input Value for Extended Function CPUID Information
1062 *
1063 * This allows us to verify if the CPUID(0x80000007) can be called
1064 *
1065 * This check is valid for both Intel and AMD.
1066 */
1067 max_level = ebx = ecx = edx = 0;
1068 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1069 if (max_level < 0x80000007) {
1070 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1071 return -ERR_NO_INVARIANT_TSC;
1072 }
1074 /*
1075 * CPUID(0x80000007):
1076 * - EDX:
1077 * + 8: Invariant TSC available if set
1078 *
1079 * This check is valid for both Intel and AMD
1080 */
1081 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1082 if (!(edx & (1 << 8))) {
1083 ERROR("No invariant TSC");
1084 return -ERR_NO_INVARIANT_TSC;
1085 }
1087 /*
1088 * CPUID(6):
1089 * - EAX:
1090 * + 0: Digital temperature sensor is supported if set
1091 * + 6: Package thermal management is supported if set
1092 * - ECX:
1093 * + 0: Hardware Coordination Feedback Capability (Presence of IA32_MPERF and IA32_APERF).
1094 * + 3: The processor supports performance-energy bias preference if set.
1095 * It also implies the presence of a new architectural MSR called IA32_ENERGY_PERF_BIAS
1096 *
1097 * This check is valid for both Intel and AMD
1098 */
1099 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1100 do_dts = eax & (1 << 0);
1101 do_ptm = eax & (1 << 6);
1102 if (!(ecx & (1 << 0))) {
1103 ERROR("No APERF");
1104 return -ERR_NO_APERF;
1105 }
1107 /*
1108 * Enable or disable C states depending on the model and family
1109 */
1110 if (family == 6) {
1111 switch (model) {
1112 /* Atom (partial) */
1113 case 0x27:
1114 do_core_cstate = 0;
1115 do_pkg_cstate = (1 << 2) | (1 << 4) | (1 << 6);
1116 break;
1117 /* Silvermont */
1118 case 0x37: /* BYT */
1119 case 0x4A:
1120 case 0x4D: /* AVN */
1121 case 0x5A:
1122 case 0x5D:
1123 do_core_cstate = (1 << 1) | (1 << 6);
1124 do_pkg_cstate = (1 << 6);
1125 break;
1126 /* Nehalem */
1127 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1128 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1129 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1130 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1131 do_core_cstate = (1 << 3) | (1 << 6);
1132 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1133 break;
1134 /* Westmere */
1135 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1136 case 0x2C: /* Westmere EP - Gulftown */
1137 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1138 do_core_cstate = (1 << 3) | (1 << 6);
1139 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1140 break;
1141 /* Sandy Bridge */
1142 case 0x2A: /* SNB */
1143 case 0x2D: /* SNB Xeon */
1144 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1145 do_pkg_cstate = (1 << 2) | (1 << 3) | (1 << 6) | (1 << 7);
1146 break;
1147 /* Ivy Bridge */
1148 case 0x3A: /* IVB */
1149 case 0x3E: /* IVB Xeon */
1150 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1151 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1152 break;
1153 /* Haswell Bridge */
1154 case 0x3C: /* HSW */
1155 case 0x3F: /* HSW */
1156 case 0x46: /* HSW */
1157 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1158 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1159 break;
1160 case 0x45: /* HSW */
1161 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1162 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1163 break;
1164 /* Broadwel */
1165 case 0x4F: /* BDW */
1166 case 0x56: /* BDX-DE */
1167 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1168 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1169 break;
1170 case 0x3D: /* BDW */
1171 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1172 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1173 break;
1174 default:
1175 ERROR("Unsupported CPU");
1176 }
1177 switch (model) {
1178 case 0x2A:
1179 case 0x3A:
1180 case 0x3C:
1181 case 0x45:
1182 case 0x46:
1183 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_GFX;
1184 break;
1185 case 0x3F:
1186 do_rapl = RAPL_PKG | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1187 break;
1188 case 0x2D:
1189 case 0x3E:
1190 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1191 break;
1192 case 0x37:
1193 case 0x4D:
1194 do_rapl = RAPL_PKG | RAPL_CORES;
1195 break;
1196 default:
1197 do_rapl = 0;
1198 }
1199 } else {
1200 ERROR("Unsupported CPU");
1201 return -UNSUPPORTED_CPU;
1202 }
1204 if (do_rapl) {
1205 unsigned long msr;
1206 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1207 return 0;
1209 if (model == 0x37)
1210 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1211 else
1212 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1213 }
1215 return 0;
1216 }
1220 static int __attribute__((warn_unused_result))
1221 topology_probe()
1222 {
1223 int i;
1224 int ret;
1225 int max_core_id = 0;
1226 int max_package_id = 0;
1227 int max_siblings = 0;
1228 struct cpu_topology {
1229 int core_id;
1230 int physical_package_id;
1231 } *cpus;
1233 /* Initialize num_cpus, max_cpu_num */
1234 topo.num_cpus = 0;
1235 topo.max_cpu_num = 0;
1236 ret = for_all_proc_cpus(count_cpus);
1237 if (ret < 0)
1238 return ret;
1240 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1242 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1243 if (cpus == NULL) {
1244 ERROR("calloc cpus");
1245 return -ERR_CALLOC;
1246 }
1248 /*
1249 * Allocate and initialize cpu_present_set
1250 */
1251 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1252 if (cpu_present_set == NULL) {
1253 free(cpus);
1254 ERROR("CPU_ALLOC");
1255 return -ERR_CPU_ALLOC;
1256 }
1257 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1258 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1259 ret = for_all_proc_cpus(mark_cpu_present);
1260 if (ret < 0) {
1261 free(cpus);
1262 return ret;
1263 }
1265 /*
1266 * Allocate and initialize cpu_affinity_set
1267 */
1268 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1269 if (cpu_affinity_set == NULL) {
1270 free(cpus);
1271 ERROR("CPU_ALLOC");
1272 return -ERR_CPU_ALLOC;
1273 }
1274 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1275 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1278 /*
1279 * For online cpus
1280 * find max_core_id, max_package_id
1281 */
1282 for (i = 0; i <= topo.max_cpu_num; ++i) {
1283 int siblings;
1285 if (cpu_is_not_present(i)) {
1286 //if (verbose > 1)
1287 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1288 continue;
1289 }
1290 cpus[i].core_id = get_core_id(i);
1291 if (cpus[i].core_id < 0)
1292 return cpus[i].core_id;
1293 if (cpus[i].core_id > max_core_id)
1294 max_core_id = cpus[i].core_id;
1296 cpus[i].physical_package_id = get_physical_package_id(i);
1297 if (cpus[i].physical_package_id < 0)
1298 return cpus[i].physical_package_id;
1299 if (cpus[i].physical_package_id > max_package_id)
1300 max_package_id = cpus[i].physical_package_id;
1302 siblings = get_num_ht_siblings(i);
1303 if (siblings < 0)
1304 return siblings;
1305 if (siblings > max_siblings)
1306 max_siblings = siblings;
1307 DEBUG("cpu %d pkg %d core %d\n",
1308 i, cpus[i].physical_package_id, cpus[i].core_id);
1309 }
1310 topo.num_cores_per_pkg = max_core_id + 1;
1311 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1312 max_core_id, topo.num_cores_per_pkg);
1314 topo.num_packages = max_package_id + 1;
1315 DEBUG("max_package_id %d, sizing for %d packages\n",
1316 max_package_id, topo.num_packages);
1318 topo.num_threads_per_core = max_siblings;
1319 DEBUG("max_siblings %d\n", max_siblings);
1321 free(cpus);
1322 return 0;
1323 }
1325 static int
1326 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1327 {
1328 int i;
1330 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1331 topo.num_packages, sizeof(struct thread_data));
1332 if (*t == NULL)
1333 goto error;
1335 for (i = 0; i < topo.num_threads_per_core *
1336 topo.num_cores_per_pkg * topo.num_packages; i++)
1337 (*t)[i].cpu_id = -1;
1339 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1340 sizeof(struct core_data));
1341 if (*c == NULL)
1342 goto error;
1344 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1345 (*c)[i].core_id = -1;
1347 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1348 if (*p == NULL)
1349 goto error;
1351 for (i = 0; i < topo.num_packages; i++)
1352 (*p)[i].package_id = i;
1354 return 0;
1355 error:
1356 ERROR("calloc counters");
1357 return -ERR_CALLOC;
1358 }
1359 /*
1360 * init_counter()
1361 *
1362 * set cpu_id, core_num, pkg_num
1363 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1364 *
1365 * increment topo.num_cores when 1st core in pkg seen
1366 */
1367 static int
1368 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1369 struct pkg_data *pkg_base, int thread_num, int core_num,
1370 int pkg_num, int cpu_id)
1371 {
1372 int ret;
1373 struct thread_data *t;
1374 struct core_data *c;
1375 struct pkg_data *p;
1377 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1378 c = GET_CORE(core_base, core_num, pkg_num);
1379 p = GET_PKG(pkg_base, pkg_num);
1381 t->cpu_id = cpu_id;
1382 if (thread_num == 0) {
1383 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1384 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1385 return ret;
1386 } else if (ret != 0) {
1387 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1388 }
1389 }
1391 c->core_id = core_num;
1392 p->package_id = pkg_num;
1394 return 0;
1395 }
1398 static int
1399 initialize_counters(int cpu_id)
1400 {
1401 int my_thread_id, my_core_id, my_package_id;
1402 int ret;
1404 my_package_id = get_physical_package_id(cpu_id);
1405 if (my_package_id < 0)
1406 return my_package_id;
1407 my_core_id = get_core_id(cpu_id);
1408 if (my_core_id < 0)
1409 return my_core_id;
1411 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1412 return ret;
1413 } else if (ret != 0) {
1414 my_thread_id = 0;
1415 topo.num_cores++;
1416 } else {
1417 my_thread_id = 1;
1418 }
1420 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1421 if (ret < 0)
1422 return ret;
1423 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1424 if (ret < 0)
1425 return ret;
1426 return 0;
1427 }
1429 #define DO_OR_GOTO_ERR(something) \
1430 do { \
1431 ret = (something); \
1432 if (ret < 0) \
1433 goto err; \
1434 } while (0)
1436 static int setup_all_buffers(void)
1437 {
1438 int ret;
1440 DO_OR_GOTO_ERR(topology_probe());
1441 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1442 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1443 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1445 allocated = 1;
1446 return 0;
1447 err:
1448 free_all_buffers();
1449 return ret;
1450 }
1452 static int
1453 turbostat_init(void)
1454 {
1455 int ret;
1457 DO_OR_GOTO_ERR(check_super_user());
1458 DO_OR_GOTO_ERR(probe_cpu());
1459 DO_OR_GOTO_ERR(check_dev_msr());
1460 DO_OR_GOTO_ERR(setup_all_buffers());
1461 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1463 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1465 return 0;
1466 err:
1467 free_all_buffers();
1468 return ret;
1469 }
1471 void module_register(void);
1472 void module_register(void)
1473 {
1474 plugin_register_init(PLUGIN_NAME, turbostat_init);
1475 }