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 /* FIXME: Do we really need this, why? */
275 if (cpu_migrate(cpu)) {
276 ERROR("Could not migrate to CPU %d\n", cpu);
277 return -ERR_CPU_MIGRATE;
278 }
280 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
281 return open(pathname, O_RDONLY);
282 }
284 static int __attribute__((warn_unused_result))
285 read_msr(int fd, off_t offset, unsigned long long *msr)
286 {
287 ssize_t retval;
289 retval = pread(fd, msr, sizeof *msr, offset);
291 if (retval != sizeof *msr) {
292 ERROR ("MSR offset 0x%llx read failed", (unsigned long long)offset);
293 return -1;
294 }
295 return 0;
296 }
298 static int __attribute__((warn_unused_result))
299 get_msr(int cpu, off_t offset, unsigned long long *msr)
300 {
301 ssize_t retval;
302 int fd;
304 fd = open_msr(cpu);
305 if (fd < 0)
306 return -1;
307 retval = read_msr(fd, offset, msr);
308 close(fd);
309 return retval;
310 }
312 #define DELTA_WRAP32(new, old) \
313 if (new > old) { \
314 old = new - old; \
315 } else { \
316 old = 0x100000000 + new - old; \
317 }
319 static void
320 delta_package(struct pkg_data *new, struct pkg_data *old)
321 {
322 old->pc2 = new->pc2 - old->pc2;
323 old->pc3 = new->pc3 - old->pc3;
324 old->pc6 = new->pc6 - old->pc6;
325 old->pc7 = new->pc7 - old->pc7;
326 old->pc8 = new->pc8 - old->pc8;
327 old->pc9 = new->pc9 - old->pc9;
328 old->pc10 = new->pc10 - old->pc10;
329 old->pkg_temp_c = new->pkg_temp_c;
331 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
332 DELTA_WRAP32(new->energy_cores, old->energy_cores);
333 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
334 DELTA_WRAP32(new->energy_dram, old->energy_dram);
335 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
336 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
337 }
339 static void
340 delta_core(struct core_data *new, struct core_data *old)
341 {
342 old->c3 = new->c3 - old->c3;
343 old->c6 = new->c6 - old->c6;
344 old->c7 = new->c7 - old->c7;
345 old->core_temp_c = new->core_temp_c;
346 }
348 /*
349 * old = new - old
350 */
351 static int __attribute__((warn_unused_result))
352 delta_thread(struct thread_data *new, struct thread_data *old,
353 struct core_data *core_delta)
354 {
355 old->tsc = new->tsc - old->tsc;
357 /* check for TSC < 1 Mcycles over interval */
358 if (old->tsc < (1000 * 1000)) {
359 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
360 "You can disable all c-states by booting with \"idle=poll\"\n"
361 "or just the deep ones with \"processor.max_cstate=1\"");
362 return -1;
363 }
365 old->c1 = new->c1 - old->c1;
367 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
368 old->aperf = new->aperf - old->aperf;
369 old->mperf = new->mperf - old->mperf;
370 } else {
372 if (!aperf_mperf_unstable) {
373 WARNING("%s: APERF or MPERF went backwards *\n", progname);
374 WARNING("* Frequency results do not cover entire interval *\n");
375 WARNING("* fix this by running Linux-2.6.30 or later *\n");
377 aperf_mperf_unstable = 1;
378 }
379 /*
380 * mperf delta is likely a huge "positive" number
381 * can not use it for calculating c0 time
382 */
383 skip_c0 = 1;
384 skip_c1 = 1;
385 }
388 /*
389 * As counter collection is not atomic,
390 * it is possible for mperf's non-halted cycles + idle states
391 * to exceed TSC's all cycles: show c1 = 0% in that case.
392 */
393 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
394 old->c1 = 0;
395 else {
396 /* normal case, derive c1 */
397 old->c1 = old->tsc - old->mperf - core_delta->c3
398 - core_delta->c6 - core_delta->c7;
399 }
401 if (old->mperf == 0) {
402 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
403 old->mperf = 1; /* divide by 0 protection */
404 }
406 old->smi_count = new->smi_count - old->smi_count;
408 return 0;
409 }
411 static int __attribute__((warn_unused_result))
412 delta_cpu(struct thread_data *t, struct core_data *c,
413 struct pkg_data *p, struct thread_data *t2,
414 struct core_data *c2, struct pkg_data *p2)
415 {
416 int ret;
418 /* calculate core delta only for 1st thread in core */
419 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
420 delta_core(c, c2);
422 /* always calculate thread delta */
423 ret = delta_thread(t, t2, c2); /* c2 is core delta */
424 if (ret != 0)
425 return ret;
427 /* calculate package delta only for 1st core in package */
428 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
429 delta_package(p, p2);
431 return 0;
432 }
434 /*
435 * get_counters(...)
436 * migrate to cpu
437 * acquire and record local counters for that cpu
438 */
439 static int __attribute__((warn_unused_result))
440 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
441 {
442 int cpu = t->cpu_id;
443 unsigned long long msr;
444 int msr_fd;
445 int retval = 0;
447 msr_fd = open_msr(cpu);
448 if (msr_fd < 0)
449 return -ERR_CANT_OPEN_MSR;
451 #define READ_MSR(msr, dst) \
452 do { \
453 if (read_msr(msr_fd, msr, dst)) { \
454 retval = -ERR_##msr; \
455 goto out; \
456 } \
457 } while (0)
459 READ_MSR(MSR_IA32_TSC, &t->tsc);
461 READ_MSR(MSR_IA32_APERF, &t->aperf);
462 READ_MSR(MSR_IA32_MPERF, &t->mperf);
464 READ_MSR(MSR_SMI_COUNT, &msr);
465 t->smi_count = msr & 0xFFFFFFFF;
467 /* collect core counters only for 1st thread in core */
468 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) {
469 retval = 0;
470 goto out;
471 }
473 if (do_core_cstate & (1 << 3))
474 READ_MSR(MSR_CORE_C3_RESIDENCY, &c->c3);
475 if (do_core_cstate & (1 << 6))
476 READ_MSR(MSR_CORE_C6_RESIDENCY, &c->c6);
477 if (do_core_cstate & (1 << 7))
478 READ_MSR(MSR_CORE_C7_RESIDENCY, &c->c7);
480 if (do_dts) {
481 READ_MSR(MSR_IA32_THERM_STATUS, &msr);
482 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
483 }
485 /* collect package counters only for 1st core in package */
486 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) {
487 retval = 0;
488 goto out;
489 }
491 if (do_pkg_cstate & (1 << 2))
492 READ_MSR(MSR_PKG_C2_RESIDENCY, &p->pc2);
493 if (do_pkg_cstate & (1 << 3))
494 READ_MSR(MSR_PKG_C3_RESIDENCY, &p->pc3);
495 if (do_pkg_cstate & (1 << 6))
496 READ_MSR(MSR_PKG_C6_RESIDENCY, &p->pc6);
497 if (do_pkg_cstate & (1 << 7))
498 READ_MSR(MSR_PKG_C7_RESIDENCY, &p->pc7);
499 if (do_pkg_cstate & (1 << 8))
500 READ_MSR(MSR_PKG_C8_RESIDENCY, &p->pc8);
501 if (do_pkg_cstate & (1 << 9))
502 READ_MSR(MSR_PKG_C9_RESIDENCY, &p->pc9);
503 if (do_pkg_cstate & (1 << 10))
504 READ_MSR(MSR_PKG_C10_RESIDENCY, &p->pc10);
506 if (do_rapl & RAPL_PKG) {
507 READ_MSR(MSR_PKG_ENERGY_STATUS, &msr);
508 p->energy_pkg = msr & 0xFFFFFFFF;
509 }
510 if (do_rapl & RAPL_CORES) {
511 READ_MSR(MSR_PP0_ENERGY_STATUS, &msr);
512 p->energy_cores = msr & 0xFFFFFFFF;
513 }
514 if (do_rapl & RAPL_DRAM) {
515 READ_MSR(MSR_DRAM_ENERGY_STATUS, &msr);
516 p->energy_dram = msr & 0xFFFFFFFF;
517 }
518 if (do_rapl & RAPL_GFX) {
519 READ_MSR(MSR_PP1_ENERGY_STATUS, &msr);
520 p->energy_gfx = msr & 0xFFFFFFFF;
521 }
522 if (do_rapl & RAPL_PKG_PERF_STATUS) {
523 READ_MSR(MSR_PKG_PERF_STATUS, &msr);
524 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
525 }
526 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
527 READ_MSR(MSR_DRAM_PERF_STATUS, &msr);
528 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
529 }
530 if (do_ptm) {
531 READ_MSR(MSR_IA32_PACKAGE_THERM_STATUS, &msr);
532 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
533 }
535 out:
536 close(msr_fd);
537 return retval;
538 }
540 static void
541 free_all_buffers(void)
542 {
543 allocated = 0;
544 initialized = 0;
546 CPU_FREE(cpu_present_set);
547 cpu_present_set = NULL;
548 cpu_present_set = 0;
550 CPU_FREE(cpu_affinity_set);
551 cpu_affinity_set = NULL;
552 cpu_affinity_setsize = 0;
554 free(thread_even);
555 free(core_even);
556 free(package_even);
558 thread_even = NULL;
559 core_even = NULL;
560 package_even = NULL;
562 free(thread_odd);
563 free(core_odd);
564 free(package_odd);
566 thread_odd = NULL;
567 core_odd = NULL;
568 package_odd = NULL;
569 }
571 /*
572 * Parse a file containing a single int.
573 */
574 static int __attribute__ ((format(printf,1,2)))
575 parse_int_file(const char *fmt, ...)
576 {
577 va_list args;
578 char path[PATH_MAX];
579 FILE *filep;
580 int value;
582 va_start(args, fmt);
583 vsnprintf(path, sizeof(path), fmt, args);
584 va_end(args);
585 filep = fopen(path, "r");
586 if (!filep) {
587 ERROR("%s: open failed", path);
588 return -ERR_CANT_OPEN_FILE;
589 }
590 if (fscanf(filep, "%d", &value) != 1) {
591 ERROR("%s: failed to parse number from file", path);
592 return -ERR_CANT_READ_NUMBER;
593 }
594 fclose(filep);
595 return value;
596 }
598 /*
599 * cpu_is_first_sibling_in_core(cpu)
600 * return 1 if given CPU is 1st HT sibling in the core
601 */
602 static int
603 cpu_is_first_sibling_in_core(int cpu)
604 {
605 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
606 }
608 /*
609 * cpu_is_first_core_in_package(cpu)
610 * return 1 if given CPU is 1st core in package
611 */
612 static int
613 cpu_is_first_core_in_package(int cpu)
614 {
615 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
616 }
618 static int
619 get_physical_package_id(int cpu)
620 {
621 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
622 }
624 static int
625 get_core_id(int cpu)
626 {
627 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
628 }
630 static int
631 get_num_ht_siblings(int cpu)
632 {
633 char path[80];
634 FILE *filep;
635 int sib1, sib2;
636 int matches;
637 char character;
639 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
640 filep = fopen(path, "r");
641 if (!filep) {
642 ERROR("%s: open failed", path);
643 return -ERR_CANT_OPEN_FILE;
644 }
645 /*
646 * file format:
647 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
648 * otherwinse 1 sibling (self).
649 */
650 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
652 fclose(filep);
654 if (matches == 3)
655 return 2;
656 else
657 return 1;
658 }
660 /*
661 * run func(thread, core, package) in topology order
662 * skip non-present cpus
663 */
666 static int __attribute__((warn_unused_result))
667 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
668 struct pkg_data *, struct thread_data *, struct core_data *,
669 struct pkg_data *), struct thread_data *thread_base,
670 struct core_data *core_base, struct pkg_data *pkg_base,
671 struct thread_data *thread_base2, struct core_data *core_base2,
672 struct pkg_data *pkg_base2)
673 {
674 int retval, pkg_no, core_no, thread_no;
676 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
677 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
678 for (thread_no = 0; thread_no <
679 topo.num_threads_per_core; ++thread_no) {
680 struct thread_data *t, *t2;
681 struct core_data *c, *c2;
682 struct pkg_data *p, *p2;
684 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
686 if (cpu_is_not_present(t->cpu_id))
687 continue;
689 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
691 c = GET_CORE(core_base, core_no, pkg_no);
692 c2 = GET_CORE(core_base2, core_no, pkg_no);
694 p = GET_PKG(pkg_base, pkg_no);
695 p2 = GET_PKG(pkg_base2, pkg_no);
697 retval = func(t, c, p, t2, c2, p2);
698 if (retval)
699 return retval;
700 }
701 }
702 }
703 return 0;
704 }
706 /*
707 * run func(cpu) on every cpu in /proc/stat
708 * return max_cpu number
709 */
710 static int __attribute__((warn_unused_result))
711 for_all_proc_cpus(int (func)(int))
712 {
713 FILE *fp;
714 int cpu_num;
715 int retval;
717 fp = fopen(proc_stat, "r");
718 if (!fp) {
719 ERROR("%s: open failed", proc_stat);
720 return -ERR_CANT_OPEN_FILE;
721 }
723 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
724 if (retval != 0) {
725 ERROR("%s: failed to parse format", proc_stat);
726 return -ERR_CANT_READ_PROC_STAT;
727 }
729 while (1) {
730 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
731 if (retval != 1)
732 break;
734 retval = func(cpu_num);
735 if (retval) {
736 fclose(fp);
737 return(retval);
738 }
739 }
740 fclose(fp);
741 return 0;
742 }
744 /*
745 * count_cpus()
746 * remember the last one seen, it will be the max
747 */
748 static int
749 count_cpus(int cpu)
750 {
751 if (topo.max_cpu_num < cpu)
752 topo.max_cpu_num = cpu;
754 topo.num_cpus += 1;
755 return 0;
756 }
757 static int
758 mark_cpu_present(int cpu)
759 {
760 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
761 return 0;
762 }
765 static void
766 turbostat_submit (const char *plugin_instance,
767 const char *type, const char *type_instance,
768 gauge_t value)
769 {
770 value_list_t vl = VALUE_LIST_INIT;
771 value_t v;
773 v.gauge = value;
774 vl.values = &v;
775 vl.values_len = 1;
776 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
777 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
778 if (plugin_instance != NULL)
779 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
780 sstrncpy (vl.type, type, sizeof (vl.type));
781 if (type_instance != NULL)
782 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
784 plugin_dispatch_values (&vl);
785 }
787 /*
788 * column formatting convention & formats
789 * package: "pk" 2 columns %2d
790 * core: "cor" 3 columns %3d
791 * CPU: "CPU" 3 columns %3d
792 * Pkg_W: %6.2
793 * Cor_W: %6.2
794 * GFX_W: %5.2
795 * RAM_W: %5.2
796 * GHz: "GHz" 3 columns %3.2
797 * TSC: "TSC" 3 columns %3.2
798 * SMI: "SMI" 4 columns %4d
799 * percentage " %pc3" %6.2
800 * Perf Status percentage: %5.2
801 * "CTMP" 4 columns %4d
802 */
803 #define NAME_LEN 12
804 static int
805 submit_counters(struct thread_data *t, struct core_data *c,
806 struct pkg_data *p)
807 {
808 char name[NAME_LEN];
809 double interval_float;
811 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
813 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
815 if (!skip_c0)
816 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
817 if (!skip_c1)
818 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
820 /* GHz */
821 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
822 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
824 /* SMI */
825 turbostat_submit(NULL, "current", name, t->smi_count);
827 /* print per-core data only for 1st thread in core */
828 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
829 goto done;
831 snprintf(name, NAME_LEN, "core%02d", c->core_id);
833 if (do_core_cstate & (1 << 3))
834 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
835 if (do_core_cstate & (1 << 6))
836 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
837 if (do_core_cstate & (1 << 7))
838 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
840 if (do_dts)
841 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
843 /* print per-package data only for 1st core in package */
844 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
845 goto done;
847 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
849 if (do_ptm)
850 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
852 if (do_pkg_cstate & (1 << 2))
853 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
854 if (do_pkg_cstate & (1 << 3))
855 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
856 if (do_pkg_cstate & (1 << 6))
857 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
858 if (do_pkg_cstate & (1 << 7))
859 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
860 if (do_pkg_cstate & (1 << 8))
861 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
862 if (do_pkg_cstate & (1 << 9))
863 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
864 if (do_pkg_cstate & (1 << 10))
865 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
867 if (do_rapl) {
868 if (do_rapl & RAPL_PKG)
869 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
870 if (do_rapl & RAPL_CORES)
871 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
872 if (do_rapl & RAPL_GFX)
873 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
874 if (do_rapl & RAPL_DRAM)
875 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
876 }
877 done:
878 return 0;
879 }
881 static int
882 turbostat_read(user_data_t * not_used)
883 {
884 int ret;
886 if (!allocated) {
887 if ((ret = setup_all_buffers()) < 0)
888 return ret;
889 }
891 if (for_all_proc_cpus(cpu_is_not_present)) {
892 free_all_buffers();
893 if ((ret = setup_all_buffers()) < 0)
894 return ret;
895 if (for_all_proc_cpus(cpu_is_not_present))
896 return -ERR_CPU_NOT_PRESENT;
897 }
899 if (!initialized) {
900 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
901 return ret;
902 gettimeofday(&tv_even, (struct timezone *)NULL);
903 is_even = 1;
904 initialized = 1;
905 return 0;
906 }
908 if (is_even) {
909 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
910 return ret;
911 gettimeofday(&tv_odd, (struct timezone *)NULL);
912 is_even = 0;
913 timersub(&tv_odd, &tv_even, &tv_delta);
914 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
915 return ret;
916 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
917 return ret;
918 } else {
919 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
920 return ret;
921 gettimeofday(&tv_even, (struct timezone *)NULL);
922 is_even = 1;
923 timersub(&tv_even, &tv_odd, &tv_delta);
924 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
925 return ret;
926 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
927 return ret;
928 }
929 return 0;
930 }
932 static int __attribute__((warn_unused_result))
933 check_dev_msr()
934 {
935 struct stat sb;
937 if (stat("/dev/cpu/0/msr", &sb)) {
938 ERROR("no /dev/cpu/0/msr\n"
939 "Try \"# modprobe msr\"");
940 return -ERR_NO_MSR;
941 }
942 return 0;
943 }
945 static int __attribute__((warn_unused_result))
946 check_super_user()
947 {
948 if (getuid() != 0) {
949 ERROR("must be root");
950 return -ERR_NOT_ROOT;
951 }
952 return 0;
953 }
955 /*
956 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
957 * the Thermal Control Circuit (TCC) activates.
958 * This is usually equal to tjMax.
959 *
960 * Older processors do not have this MSR, so there we guess,
961 * but also allow cmdline over-ride with -T.
962 *
963 * Several MSR temperature values are in units of degrees-C
964 * below this value, including the Digital Thermal Sensor (DTS),
965 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
966 */
967 static int __attribute__((warn_unused_result))
968 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
969 {
970 unsigned long long msr;
971 unsigned int target_c_local;
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 if (tcc_activation_temp_override != 0) {
982 tcc_activation_temp = tcc_activation_temp_override;
983 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
984 cpu, tcc_activation_temp);
985 return 0;
986 }
988 if (get_msr(t->cpu_id, MSR_IA32_TEMPERATURE_TARGET, &msr))
989 goto guess;
991 target_c_local = (msr >> 16) & 0x7F;
993 if (target_c_local < 85 || target_c_local > 127)
994 goto guess;
996 tcc_activation_temp = target_c_local;
998 return 0;
1000 guess:
1001 tcc_activation_temp = TJMAX_DEFAULT;
1002 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1003 t->cpu_id, tcc_activation_temp);
1005 return 0;
1006 }
1008 /*
1009 * Identify the functionality of the CPU
1010 */
1011 static int __attribute__((warn_unused_result))
1012 probe_cpu()
1013 {
1014 unsigned int eax, ebx, ecx, edx, max_level;
1015 unsigned int fms, family, model;
1017 /* CPUID(0):
1018 * - EAX: Maximum Input Value for Basic CPUID Information
1019 * - EBX: "Genu" (0x756e6547)
1020 * - EDX: "ineI" (0x49656e69)
1021 * - ECX: "ntel" (0x6c65746e)
1022 */
1023 max_level = ebx = ecx = edx = 0;
1024 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1025 if (ebx != 0x756e6547 && edx != 0x49656e69 && ecx != 0x6c65746e) {
1026 ERROR("Unsupported CPU");
1027 return -UNSUPPORTED_CPU;
1028 }
1030 /* CPUID(1):
1031 * - EAX: Version Information: Type, Family, Model, and Stepping ID
1032 * + 4-7: Model ID
1033 * + 8-11: Family ID
1034 * + 12-13: Processor type
1035 * + 16-19: Extended Model ID
1036 * + 20-27: Extended Family ID
1037 * - EDX: Feature Information:
1038 * + 5: Support for MSR read/write operations
1039 */
1040 fms = ebx = ecx = edx = 0;
1041 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1042 family = (fms >> 8) & 0xf;
1043 model = (fms >> 4) & 0xf;
1044 if (family == 0xf)
1045 family += (fms >> 20) & 0xf;
1046 if (family == 6 || family == 0xf)
1047 model += ((fms >> 16) & 0xf) << 4;
1048 if (!(edx & (1 << 5))) {
1049 ERROR("CPUID: no MSR");
1050 return -ERR_NO_MSR;
1051 }
1053 /*
1054 * CPUID(0x80000000):
1055 * - EAX: Maximum Input Value for Extended Function CPUID Information
1056 *
1057 * This allows us to verify if the CPUID(0x80000007) can be called
1058 *
1059 * This check is valid for both Intel and AMD.
1060 */
1061 max_level = ebx = ecx = edx = 0;
1062 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1063 if (max_level < 0x80000007) {
1064 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1065 return -ERR_NO_INVARIANT_TSC;
1066 }
1068 /*
1069 * CPUID(0x80000007):
1070 * - EDX:
1071 * + 8: Invariant TSC available if set
1072 *
1073 * This check is valid for both Intel and AMD
1074 */
1075 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1076 if (!(edx & (1 << 8))) {
1077 ERROR("No invariant TSC");
1078 return -ERR_NO_INVARIANT_TSC;
1079 }
1081 /*
1082 * CPUID(6):
1083 * - EAX:
1084 * + 0: Digital temperature sensor is supported if set
1085 * + 6: Package thermal management is supported if set
1086 * - ECX:
1087 * + 0: Hardware Coordination Feedback Capability (Presence of IA32_MPERF and IA32_APERF).
1088 * + 3: The processor supports performance-energy bias preference if set.
1089 * It also implies the presence of a new architectural MSR called IA32_ENERGY_PERF_BIAS
1090 *
1091 * This check is valid for both Intel and AMD
1092 */
1093 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1094 do_dts = eax & (1 << 0);
1095 do_ptm = eax & (1 << 6);
1096 if (!(ecx & (1 << 0))) {
1097 ERROR("No APERF");
1098 return -ERR_NO_APERF;
1099 }
1101 /*
1102 * Enable or disable C states depending on the model and family
1103 */
1104 if (family == 6) {
1105 switch (model) {
1106 /* Atom (partial) */
1107 case 0x27:
1108 do_core_cstate = 0;
1109 do_pkg_cstate = (1 << 2) | (1 << 4) | (1 << 6);
1110 break;
1111 /* Silvermont */
1112 case 0x37: /* BYT */
1113 case 0x4A:
1114 case 0x4D: /* AVN */
1115 case 0x5A:
1116 case 0x5D:
1117 do_core_cstate = (1 << 1) | (1 << 6);
1118 do_pkg_cstate = (1 << 6);
1119 break;
1120 /* Nehalem */
1121 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1122 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1123 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1124 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1125 do_core_cstate = (1 << 3) | (1 << 6);
1126 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1127 break;
1128 /* Westmere */
1129 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1130 case 0x2C: /* Westmere EP - Gulftown */
1131 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1132 do_core_cstate = (1 << 3) | (1 << 6);
1133 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1134 break;
1135 /* Sandy Bridge */
1136 case 0x2A: /* SNB */
1137 case 0x2D: /* SNB Xeon */
1138 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1139 do_pkg_cstate = (1 << 2) | (1 << 3) | (1 << 6) | (1 << 7);
1140 break;
1141 /* Ivy Bridge */
1142 case 0x3A: /* IVB */
1143 case 0x3E: /* IVB Xeon */
1144 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1145 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1146 break;
1147 /* Haswell Bridge */
1148 case 0x3C: /* HSW */
1149 case 0x3F: /* HSW */
1150 case 0x46: /* HSW */
1151 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1152 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1153 break;
1154 case 0x45: /* HSW */
1155 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1156 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1157 break;
1158 /* Broadwel */
1159 case 0x4F: /* BDW */
1160 case 0x56: /* BDX-DE */
1161 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1162 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1163 break;
1164 case 0x3D: /* BDW */
1165 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1166 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1167 break;
1168 default:
1169 ERROR("Unsupported CPU");
1170 }
1171 switch (model) {
1172 case 0x2A:
1173 case 0x3A:
1174 case 0x3C:
1175 case 0x45:
1176 case 0x46:
1177 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_GFX;
1178 break;
1179 case 0x3F:
1180 do_rapl = RAPL_PKG | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1181 break;
1182 case 0x2D:
1183 case 0x3E:
1184 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1185 break;
1186 case 0x37:
1187 case 0x4D:
1188 do_rapl = RAPL_PKG | RAPL_CORES;
1189 break;
1190 default:
1191 do_rapl = 0;
1192 }
1193 } else {
1194 ERROR("Unsupported CPU");
1195 return -UNSUPPORTED_CPU;
1196 }
1198 if (do_rapl) {
1199 unsigned long msr;
1200 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1201 return 0;
1203 if (model == 0x37)
1204 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1205 else
1206 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1207 }
1209 return 0;
1210 }
1214 static int __attribute__((warn_unused_result))
1215 topology_probe()
1216 {
1217 int i;
1218 int ret;
1219 int max_core_id = 0;
1220 int max_package_id = 0;
1221 int max_siblings = 0;
1222 struct cpu_topology {
1223 int core_id;
1224 int physical_package_id;
1225 } *cpus;
1227 /* Initialize num_cpus, max_cpu_num */
1228 topo.num_cpus = 0;
1229 topo.max_cpu_num = 0;
1230 ret = for_all_proc_cpus(count_cpus);
1231 if (ret < 0)
1232 return ret;
1234 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1236 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1237 if (cpus == NULL) {
1238 ERROR("calloc cpus");
1239 return -ERR_CALLOC;
1240 }
1242 /*
1243 * Allocate and initialize cpu_present_set
1244 */
1245 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1246 if (cpu_present_set == NULL) {
1247 free(cpus);
1248 ERROR("CPU_ALLOC");
1249 return -ERR_CPU_ALLOC;
1250 }
1251 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1252 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1253 ret = for_all_proc_cpus(mark_cpu_present);
1254 if (ret < 0) {
1255 free(cpus);
1256 return ret;
1257 }
1259 /*
1260 * Allocate and initialize cpu_affinity_set
1261 */
1262 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1263 if (cpu_affinity_set == NULL) {
1264 free(cpus);
1265 ERROR("CPU_ALLOC");
1266 return -ERR_CPU_ALLOC;
1267 }
1268 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1269 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1272 /*
1273 * For online cpus
1274 * find max_core_id, max_package_id
1275 */
1276 for (i = 0; i <= topo.max_cpu_num; ++i) {
1277 int siblings;
1279 if (cpu_is_not_present(i)) {
1280 //if (verbose > 1)
1281 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1282 continue;
1283 }
1284 cpus[i].core_id = get_core_id(i);
1285 if (cpus[i].core_id < 0)
1286 return cpus[i].core_id;
1287 if (cpus[i].core_id > max_core_id)
1288 max_core_id = cpus[i].core_id;
1290 cpus[i].physical_package_id = get_physical_package_id(i);
1291 if (cpus[i].physical_package_id < 0)
1292 return cpus[i].physical_package_id;
1293 if (cpus[i].physical_package_id > max_package_id)
1294 max_package_id = cpus[i].physical_package_id;
1296 siblings = get_num_ht_siblings(i);
1297 if (siblings < 0)
1298 return siblings;
1299 if (siblings > max_siblings)
1300 max_siblings = siblings;
1301 DEBUG("cpu %d pkg %d core %d\n",
1302 i, cpus[i].physical_package_id, cpus[i].core_id);
1303 }
1304 topo.num_cores_per_pkg = max_core_id + 1;
1305 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1306 max_core_id, topo.num_cores_per_pkg);
1308 topo.num_packages = max_package_id + 1;
1309 DEBUG("max_package_id %d, sizing for %d packages\n",
1310 max_package_id, topo.num_packages);
1312 topo.num_threads_per_core = max_siblings;
1313 DEBUG("max_siblings %d\n", max_siblings);
1315 free(cpus);
1316 return 0;
1317 }
1319 static int
1320 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1321 {
1322 int i;
1324 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1325 topo.num_packages, sizeof(struct thread_data));
1326 if (*t == NULL)
1327 goto error;
1329 for (i = 0; i < topo.num_threads_per_core *
1330 topo.num_cores_per_pkg * topo.num_packages; i++)
1331 (*t)[i].cpu_id = -1;
1333 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1334 sizeof(struct core_data));
1335 if (*c == NULL)
1336 goto error;
1338 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1339 (*c)[i].core_id = -1;
1341 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1342 if (*p == NULL)
1343 goto error;
1345 for (i = 0; i < topo.num_packages; i++)
1346 (*p)[i].package_id = i;
1348 return 0;
1349 error:
1350 ERROR("calloc counters");
1351 return -ERR_CALLOC;
1352 }
1353 /*
1354 * init_counter()
1355 *
1356 * set cpu_id, core_num, pkg_num
1357 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1358 *
1359 * increment topo.num_cores when 1st core in pkg seen
1360 */
1361 static int
1362 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1363 struct pkg_data *pkg_base, int thread_num, int core_num,
1364 int pkg_num, int cpu_id)
1365 {
1366 int ret;
1367 struct thread_data *t;
1368 struct core_data *c;
1369 struct pkg_data *p;
1371 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1372 c = GET_CORE(core_base, core_num, pkg_num);
1373 p = GET_PKG(pkg_base, pkg_num);
1375 t->cpu_id = cpu_id;
1376 if (thread_num == 0) {
1377 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1378 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1379 return ret;
1380 } else if (ret != 0) {
1381 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1382 }
1383 }
1385 c->core_id = core_num;
1386 p->package_id = pkg_num;
1388 return 0;
1389 }
1392 static int
1393 initialize_counters(int cpu_id)
1394 {
1395 int my_thread_id, my_core_id, my_package_id;
1396 int ret;
1398 my_package_id = get_physical_package_id(cpu_id);
1399 if (my_package_id < 0)
1400 return my_package_id;
1401 my_core_id = get_core_id(cpu_id);
1402 if (my_core_id < 0)
1403 return my_core_id;
1405 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1406 return ret;
1407 } else if (ret != 0) {
1408 my_thread_id = 0;
1409 topo.num_cores++;
1410 } else {
1411 my_thread_id = 1;
1412 }
1414 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1415 if (ret < 0)
1416 return ret;
1417 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1418 if (ret < 0)
1419 return ret;
1420 return 0;
1421 }
1423 #define DO_OR_GOTO_ERR(something) \
1424 do { \
1425 ret = (something); \
1426 if (ret < 0) \
1427 goto err; \
1428 } while (0)
1430 static int setup_all_buffers(void)
1431 {
1432 int ret;
1434 DO_OR_GOTO_ERR(topology_probe());
1435 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1436 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1437 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1439 allocated = 1;
1440 return 0;
1441 err:
1442 free_all_buffers();
1443 return ret;
1444 }
1446 static int
1447 turbostat_init(void)
1448 {
1449 int ret;
1451 DO_OR_GOTO_ERR(check_super_user());
1452 DO_OR_GOTO_ERR(probe_cpu());
1453 DO_OR_GOTO_ERR(check_dev_msr());
1454 DO_OR_GOTO_ERR(setup_all_buffers());
1455 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1457 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1459 return 0;
1460 err:
1461 free_all_buffers();
1462 return ret;
1463 }
1465 void module_register(void);
1466 void module_register(void)
1467 {
1468 plugin_register_init(PLUGIN_NAME, turbostat_init);
1469 }