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_nhm_cstates;
67 static unsigned int do_snb_cstates;
68 static unsigned int do_c8_c9_c10;
69 static unsigned int do_slm_cstates;
70 static unsigned int has_epb;
71 static unsigned int genuine_intel;
72 static unsigned int do_nehalem_platform_info;
73 static int do_smi;
74 static unsigned int do_rapl;
75 static unsigned int do_dts;
76 static unsigned int do_ptm;
77 static unsigned int tcc_activation_temp;
78 static unsigned int tcc_activation_temp_override;
79 static double rapl_power_units, rapl_energy_units, rapl_time_units;
80 static double rapl_joule_counter_range;
82 #define RAPL_PKG (1 << 0)
83 /* 0x610 MSR_PKG_POWER_LIMIT */
84 /* 0x611 MSR_PKG_ENERGY_STATUS */
85 #define RAPL_PKG_PERF_STATUS (1 << 1)
86 /* 0x613 MSR_PKG_PERF_STATUS */
87 #define RAPL_PKG_POWER_INFO (1 << 2)
88 /* 0x614 MSR_PKG_POWER_INFO */
90 #define RAPL_DRAM (1 << 3)
91 /* 0x618 MSR_DRAM_POWER_LIMIT */
92 /* 0x619 MSR_DRAM_ENERGY_STATUS */
93 /* 0x61c MSR_DRAM_POWER_INFO */
94 #define RAPL_DRAM_PERF_STATUS (1 << 4)
95 /* 0x61b MSR_DRAM_PERF_STATUS */
97 #define RAPL_CORES (1 << 5)
98 /* 0x638 MSR_PP0_POWER_LIMIT */
99 /* 0x639 MSR_PP0_ENERGY_STATUS */
100 #define RAPL_CORE_POLICY (1 << 6)
101 /* 0x63a MSR_PP0_POLICY */
104 #define RAPL_GFX (1 << 7)
105 /* 0x640 MSR_PP1_POWER_LIMIT */
106 /* 0x641 MSR_PP1_ENERGY_STATUS */
107 /* 0x642 MSR_PP1_POLICY */
108 #define TJMAX_DEFAULT 100
110 int aperf_mperf_unstable;
111 int backwards_count;
112 char *progname;
114 cpu_set_t *cpu_present_set, *cpu_affinity_set;
115 size_t cpu_present_setsize, cpu_affinity_setsize;
117 struct thread_data {
118 unsigned long long tsc;
119 unsigned long long aperf;
120 unsigned long long mperf;
121 unsigned long long c1;
122 unsigned int smi_count;
123 unsigned int cpu_id;
124 unsigned int flags;
125 #define CPU_IS_FIRST_THREAD_IN_CORE 0x2
126 #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
127 } *thread_even, *thread_odd;
129 struct core_data {
130 unsigned long long c3;
131 unsigned long long c6;
132 unsigned long long c7;
133 unsigned int core_temp_c;
134 unsigned int core_id;
135 } *core_even, *core_odd;
137 struct pkg_data {
138 unsigned long long pc2;
139 unsigned long long pc3;
140 unsigned long long pc6;
141 unsigned long long pc7;
142 unsigned long long pc8;
143 unsigned long long pc9;
144 unsigned long long pc10;
145 unsigned int package_id;
146 unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
147 unsigned int energy_dram; /* MSR_DRAM_ENERGY_STATUS */
148 unsigned int energy_cores; /* MSR_PP0_ENERGY_STATUS */
149 unsigned int energy_gfx; /* MSR_PP1_ENERGY_STATUS */
150 unsigned int rapl_pkg_perf_status; /* MSR_PKG_PERF_STATUS */
151 unsigned int rapl_dram_perf_status; /* MSR_DRAM_PERF_STATUS */
152 unsigned int pkg_temp_c;
154 } *package_even, *package_odd;
156 #define ODD_COUNTERS thread_odd, core_odd, package_odd
157 #define EVEN_COUNTERS thread_even, core_even, package_even
158 static _Bool is_even = 1;
160 static _Bool allocated = 0;
161 static _Bool initialized = 0;
163 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
164 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
165 topo.num_threads_per_core + \
166 (core_no) * topo.num_threads_per_core + (thread_no))
167 #define GET_CORE(core_base, core_no, pkg_no) \
168 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
169 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
171 struct topo_params {
172 int num_packages;
173 int num_cpus;
174 int num_cores;
175 int max_cpu_num;
176 int num_cores_per_pkg;
177 int num_threads_per_core;
178 } topo;
180 struct timeval tv_even, tv_odd, tv_delta;
182 enum return_values {
183 OK = 0,
184 ERR_CPU_MIGRATE,
185 ERR_MSR_IA32_APERF,
186 ERR_MSR_IA32_MPERF,
187 ERR_MSR_SMI_COUNT,
188 ERR_MSR_CORE_C3_RESIDENCY,
189 ERR_MSR_CORE_C6_RESIDENCY,
190 ERR_MSR_CORE_C7_RESIDENCY,
191 ERR_MSR_IA32_THERM_STATUS,
192 ERR_MSR_PKG_C3_RESIDENCY,
193 ERR_MSR_PKG_C6_RESIDENCY,
194 ERR_MSR_PKG_C2_RESIDENCY,
195 ERR_MSR_PKG_C7_RESIDENCY,
196 ERR_MSR_PKG_C8_RESIDENCY,
197 ERR_MSR_PKG_C9_RESIDENCY,
198 ERR_MSR_PKG_C10_RESIDENCY,
199 ERR_MSR_PKG_ENERGY_STATUS,
200 ERR_MSR_PP0_ENERGY_STATUS,
201 ERR_MSR_DRAM_ENERGY_STATUS,
202 ERR_MSR_PP1_ENERGY_STATUS,
203 ERR_MSR_PKG_PERF_STATUS,
204 ERR_MSR_DRAM_PERF_STATUS,
205 ERR_MSR_IA32_PACKAGE_THERM_STATUS,
206 ERR_CPU_NOT_PRESENT,
207 ERR_NO_MSR,
208 ERR_CANT_OPEN_FILE,
209 ERR_CANT_READ_NUMBER,
210 ERR_CANT_READ_PROC_STAT,
211 ERR_NO_INVARIANT_TSC,
212 ERR_NO_APERF,
213 ERR_CALLOC,
214 ERR_CPU_ALLOC,
215 ERR_NOT_ROOT,
216 };
218 static int setup_all_buffers(void);
220 static int
221 cpu_is_not_present(int cpu)
222 {
223 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
224 }
225 /*
226 * run func(thread, core, package) in topology order
227 * skip non-present cpus
228 */
230 static int __attribute__((warn_unused_result))
231 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
232 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
233 {
234 int retval, pkg_no, core_no, thread_no;
236 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
237 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
238 for (thread_no = 0; thread_no <
239 topo.num_threads_per_core; ++thread_no) {
240 struct thread_data *t;
241 struct core_data *c;
242 struct pkg_data *p;
244 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
246 if (cpu_is_not_present(t->cpu_id))
247 continue;
249 c = GET_CORE(core_base, core_no, pkg_no);
250 p = GET_PKG(pkg_base, pkg_no);
252 retval = func(t, c, p);
253 if (retval)
254 return retval;
255 }
256 }
257 }
258 return 0;
259 }
261 static int __attribute__((warn_unused_result))
262 cpu_migrate(int cpu)
263 {
264 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
265 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
266 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
267 return -ERR_CPU_MIGRATE;
268 else
269 return 0;
270 }
272 static int __attribute__((warn_unused_result))
273 get_msr(int cpu, off_t offset, unsigned long long *msr)
274 {
275 ssize_t retval;
276 char pathname[32];
277 int fd;
279 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
280 fd = open(pathname, O_RDONLY);
281 if (fd < 0)
282 return -1;
284 retval = pread(fd, msr, sizeof *msr, offset);
285 close(fd);
287 if (retval != sizeof *msr) {
288 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
289 return -1;
290 }
292 return 0;
293 }
295 #define DELTA_WRAP32(new, old) \
296 if (new > old) { \
297 old = new - old; \
298 } else { \
299 old = 0x100000000 + new - old; \
300 }
302 static void
303 delta_package(struct pkg_data *new, struct pkg_data *old)
304 {
305 old->pc2 = new->pc2 - old->pc2;
306 old->pc3 = new->pc3 - old->pc3;
307 old->pc6 = new->pc6 - old->pc6;
308 old->pc7 = new->pc7 - old->pc7;
309 old->pc8 = new->pc8 - old->pc8;
310 old->pc9 = new->pc9 - old->pc9;
311 old->pc10 = new->pc10 - old->pc10;
312 old->pkg_temp_c = new->pkg_temp_c;
314 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
315 DELTA_WRAP32(new->energy_cores, old->energy_cores);
316 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
317 DELTA_WRAP32(new->energy_dram, old->energy_dram);
318 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
319 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
320 }
322 static void
323 delta_core(struct core_data *new, struct core_data *old)
324 {
325 old->c3 = new->c3 - old->c3;
326 old->c6 = new->c6 - old->c6;
327 old->c7 = new->c7 - old->c7;
328 old->core_temp_c = new->core_temp_c;
329 }
331 /*
332 * old = new - old
333 */
334 static int __attribute__((warn_unused_result))
335 delta_thread(struct thread_data *new, struct thread_data *old,
336 struct core_data *core_delta)
337 {
338 old->tsc = new->tsc - old->tsc;
340 /* check for TSC < 1 Mcycles over interval */
341 if (old->tsc < (1000 * 1000)) {
342 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
343 "You can disable all c-states by booting with \"idle=poll\"\n"
344 "or just the deep ones with \"processor.max_cstate=1\"");
345 return -1;
346 }
348 old->c1 = new->c1 - old->c1;
350 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
351 old->aperf = new->aperf - old->aperf;
352 old->mperf = new->mperf - old->mperf;
353 } else {
355 if (!aperf_mperf_unstable) {
356 WARNING("%s: APERF or MPERF went backwards *\n", progname);
357 WARNING("* Frequency results do not cover entire interval *\n");
358 WARNING("* fix this by running Linux-2.6.30 or later *\n");
360 aperf_mperf_unstable = 1;
361 }
362 /*
363 * mperf delta is likely a huge "positive" number
364 * can not use it for calculating c0 time
365 */
366 skip_c0 = 1;
367 skip_c1 = 1;
368 }
371 /*
372 * As counter collection is not atomic,
373 * it is possible for mperf's non-halted cycles + idle states
374 * to exceed TSC's all cycles: show c1 = 0% in that case.
375 */
376 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
377 old->c1 = 0;
378 else {
379 /* normal case, derive c1 */
380 old->c1 = old->tsc - old->mperf - core_delta->c3
381 - core_delta->c6 - core_delta->c7;
382 }
384 if (old->mperf == 0) {
385 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
386 old->mperf = 1; /* divide by 0 protection */
387 }
389 if (do_smi)
390 old->smi_count = new->smi_count - old->smi_count;
392 return 0;
393 }
395 static int __attribute__((warn_unused_result))
396 delta_cpu(struct thread_data *t, struct core_data *c,
397 struct pkg_data *p, struct thread_data *t2,
398 struct core_data *c2, struct pkg_data *p2)
399 {
400 int ret;
402 /* calculate core delta only for 1st thread in core */
403 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
404 delta_core(c, c2);
406 /* always calculate thread delta */
407 ret = delta_thread(t, t2, c2); /* c2 is core delta */
408 if (ret != 0)
409 return ret;
411 /* calculate package delta only for 1st core in package */
412 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
413 delta_package(p, p2);
415 return 0;
416 }
418 static unsigned long long
419 rdtsc(void)
420 {
421 unsigned int low, high;
423 asm volatile("rdtsc" : "=a" (low), "=d" (high));
425 return low | ((unsigned long long)high) << 32;
426 }
429 /*
430 * get_counters(...)
431 * migrate to cpu
432 * acquire and record local counters for that cpu
433 */
434 static int __attribute__((warn_unused_result))
435 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
436 {
437 int cpu = t->cpu_id;
438 unsigned long long msr;
440 if (cpu_migrate(cpu)) {
441 WARNING("Could not migrate to CPU %d\n", cpu);
442 return -ERR_CPU_MIGRATE;
443 }
445 t->tsc = rdtsc(); /* we are running on local CPU of interest */
447 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
448 return -ERR_MSR_IA32_APERF;
449 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
450 return -ERR_MSR_IA32_MPERF;
452 if (do_smi) {
453 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
454 return -ERR_MSR_SMI_COUNT;
455 t->smi_count = msr & 0xFFFFFFFF;
456 }
458 /* collect core counters only for 1st thread in core */
459 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
460 return 0;
462 if (do_nhm_cstates && !do_slm_cstates) {
463 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
464 return -ERR_MSR_CORE_C3_RESIDENCY;
465 }
467 if (do_nhm_cstates) {
468 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
469 return -ERR_MSR_CORE_C6_RESIDENCY;
470 }
472 if (do_snb_cstates)
473 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
474 return -ERR_MSR_CORE_C7_RESIDENCY;
476 if (do_dts) {
477 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
478 return -ERR_MSR_IA32_THERM_STATUS;
479 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
480 }
483 /* collect package counters only for 1st core in package */
484 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
485 return 0;
487 if (do_nhm_cstates && !do_slm_cstates) {
488 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
489 return -ERR_MSR_PKG_C3_RESIDENCY;
490 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
491 return -ERR_MSR_PKG_C6_RESIDENCY;
492 }
493 if (do_snb_cstates) {
494 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
495 return -ERR_MSR_PKG_C2_RESIDENCY;
496 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
497 return -ERR_MSR_PKG_C7_RESIDENCY;
498 }
499 if (do_c8_c9_c10) {
500 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
501 return -ERR_MSR_PKG_C8_RESIDENCY;
502 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
503 return -ERR_MSR_PKG_C9_RESIDENCY;
504 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
505 return -ERR_MSR_PKG_C10_RESIDENCY;
506 }
507 if (do_rapl & RAPL_PKG) {
508 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
509 return -ERR_MSR_PKG_ENERGY_STATUS;
510 p->energy_pkg = msr & 0xFFFFFFFF;
511 }
512 if (do_rapl & RAPL_CORES) {
513 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
514 return MSR_PP0_ENERGY_STATUS;
515 p->energy_cores = msr & 0xFFFFFFFF;
516 }
517 if (do_rapl & RAPL_DRAM) {
518 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
519 return -ERR_MSR_DRAM_ENERGY_STATUS;
520 p->energy_dram = msr & 0xFFFFFFFF;
521 }
522 if (do_rapl & RAPL_GFX) {
523 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
524 return -ERR_MSR_PP1_ENERGY_STATUS;
525 p->energy_gfx = msr & 0xFFFFFFFF;
526 }
527 if (do_rapl & RAPL_PKG_PERF_STATUS) {
528 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
529 return -ERR_MSR_PKG_PERF_STATUS;
530 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
531 }
532 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
533 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
534 return -ERR_MSR_DRAM_PERF_STATUS;
535 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
536 }
537 if (do_ptm) {
538 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
539 return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
540 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
541 }
542 return 0;
543 }
545 static void
546 free_all_buffers(void)
547 {
548 allocated = 0;
549 initialized = 0;
551 CPU_FREE(cpu_present_set);
552 cpu_present_set = NULL;
553 cpu_present_set = 0;
555 CPU_FREE(cpu_affinity_set);
556 cpu_affinity_set = NULL;
557 cpu_affinity_setsize = 0;
559 free(thread_even);
560 free(core_even);
561 free(package_even);
563 thread_even = NULL;
564 core_even = NULL;
565 package_even = NULL;
567 free(thread_odd);
568 free(core_odd);
569 free(package_odd);
571 thread_odd = NULL;
572 core_odd = NULL;
573 package_odd = NULL;
574 }
576 /*
577 * Parse a file containing a single int.
578 */
579 static int __attribute__ ((format(printf,1,2)))
580 parse_int_file(const char *fmt, ...)
581 {
582 va_list args;
583 char path[PATH_MAX];
584 FILE *filep;
585 int value;
587 va_start(args, fmt);
588 vsnprintf(path, sizeof(path), fmt, args);
589 va_end(args);
590 filep = fopen(path, "r");
591 if (!filep) {
592 ERROR("%s: open failed", path);
593 return -ERR_CANT_OPEN_FILE;
594 }
595 if (fscanf(filep, "%d", &value) != 1) {
596 ERROR("%s: failed to parse number from file", path);
597 return -ERR_CANT_READ_NUMBER;
598 }
599 fclose(filep);
600 return value;
601 }
603 /*
604 * cpu_is_first_sibling_in_core(cpu)
605 * return 1 if given CPU is 1st HT sibling in the core
606 */
607 static int
608 cpu_is_first_sibling_in_core(int cpu)
609 {
610 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
611 }
613 /*
614 * cpu_is_first_core_in_package(cpu)
615 * return 1 if given CPU is 1st core in package
616 */
617 static int
618 cpu_is_first_core_in_package(int cpu)
619 {
620 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
621 }
623 static int
624 get_physical_package_id(int cpu)
625 {
626 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
627 }
629 static int
630 get_core_id(int cpu)
631 {
632 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
633 }
635 static int
636 get_num_ht_siblings(int cpu)
637 {
638 char path[80];
639 FILE *filep;
640 int sib1, sib2;
641 int matches;
642 char character;
644 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
645 filep = fopen(path, "r");
646 if (!filep) {
647 ERROR("%s: open failed", path);
648 return -ERR_CANT_OPEN_FILE;
649 }
650 /*
651 * file format:
652 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
653 * otherwinse 1 sibling (self).
654 */
655 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
657 fclose(filep);
659 if (matches == 3)
660 return 2;
661 else
662 return 1;
663 }
665 /*
666 * run func(thread, core, package) in topology order
667 * skip non-present cpus
668 */
671 static int __attribute__((warn_unused_result))
672 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
673 struct pkg_data *, struct thread_data *, struct core_data *,
674 struct pkg_data *), struct thread_data *thread_base,
675 struct core_data *core_base, struct pkg_data *pkg_base,
676 struct thread_data *thread_base2, struct core_data *core_base2,
677 struct pkg_data *pkg_base2)
678 {
679 int retval, pkg_no, core_no, thread_no;
681 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
682 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
683 for (thread_no = 0; thread_no <
684 topo.num_threads_per_core; ++thread_no) {
685 struct thread_data *t, *t2;
686 struct core_data *c, *c2;
687 struct pkg_data *p, *p2;
689 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
691 if (cpu_is_not_present(t->cpu_id))
692 continue;
694 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
696 c = GET_CORE(core_base, core_no, pkg_no);
697 c2 = GET_CORE(core_base2, core_no, pkg_no);
699 p = GET_PKG(pkg_base, pkg_no);
700 p2 = GET_PKG(pkg_base2, pkg_no);
702 retval = func(t, c, p, t2, c2, p2);
703 if (retval)
704 return retval;
705 }
706 }
707 }
708 return 0;
709 }
711 /*
712 * run func(cpu) on every cpu in /proc/stat
713 * return max_cpu number
714 */
715 static int __attribute__((warn_unused_result))
716 for_all_proc_cpus(int (func)(int))
717 {
718 FILE *fp;
719 int cpu_num;
720 int retval;
722 fp = fopen(proc_stat, "r");
723 if (!fp) {
724 ERROR("%s: open failed", proc_stat);
725 return -ERR_CANT_OPEN_FILE;
726 }
728 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
729 if (retval != 0) {
730 ERROR("%s: failed to parse format", proc_stat);
731 return -ERR_CANT_READ_PROC_STAT;
732 }
734 while (1) {
735 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
736 if (retval != 1)
737 break;
739 retval = func(cpu_num);
740 if (retval) {
741 fclose(fp);
742 return(retval);
743 }
744 }
745 fclose(fp);
746 return 0;
747 }
749 /*
750 * count_cpus()
751 * remember the last one seen, it will be the max
752 */
753 static int
754 count_cpus(int cpu)
755 {
756 if (topo.max_cpu_num < cpu)
757 topo.max_cpu_num = cpu;
759 topo.num_cpus += 1;
760 return 0;
761 }
762 static int
763 mark_cpu_present(int cpu)
764 {
765 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
766 return 0;
767 }
770 static void
771 turbostat_submit (const char *plugin_instance,
772 const char *type, const char *type_instance,
773 gauge_t value)
774 {
775 value_list_t vl = VALUE_LIST_INIT;
776 value_t v;
778 v.gauge = value;
779 vl.values = &v;
780 vl.values_len = 1;
781 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
782 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
783 if (plugin_instance != NULL)
784 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
785 sstrncpy (vl.type, type, sizeof (vl.type));
786 if (type_instance != NULL)
787 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
789 plugin_dispatch_values (&vl);
790 }
792 /*
793 * column formatting convention & formats
794 * package: "pk" 2 columns %2d
795 * core: "cor" 3 columns %3d
796 * CPU: "CPU" 3 columns %3d
797 * Pkg_W: %6.2
798 * Cor_W: %6.2
799 * GFX_W: %5.2
800 * RAM_W: %5.2
801 * GHz: "GHz" 3 columns %3.2
802 * TSC: "TSC" 3 columns %3.2
803 * SMI: "SMI" 4 columns %4d
804 * percentage " %pc3" %6.2
805 * Perf Status percentage: %5.2
806 * "CTMP" 4 columns %4d
807 */
808 #define NAME_LEN 12
809 static int
810 submit_counters(struct thread_data *t, struct core_data *c,
811 struct pkg_data *p)
812 {
813 char name[NAME_LEN];
814 double interval_float;
816 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
818 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
820 if (do_nhm_cstates) {
821 if (!skip_c0)
822 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
823 if (!skip_c1)
824 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
825 }
827 /* GHz */
828 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
829 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
831 /* SMI */
832 if (do_smi)
833 turbostat_submit(NULL, "current", name, t->smi_count);
835 /* print per-core data only for 1st thread in core */
836 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
837 goto done;
839 snprintf(name, NAME_LEN, "core%02d", c->core_id);
841 if (do_nhm_cstates && !do_slm_cstates)
842 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
843 if (do_nhm_cstates)
844 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
845 if (do_snb_cstates)
846 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
848 if (do_dts)
849 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
851 /* print per-package data only for 1st core in package */
852 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
853 goto done;
855 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
857 if (do_ptm)
858 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
860 if (do_snb_cstates)
861 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
862 if (do_nhm_cstates && !do_slm_cstates)
863 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
864 if (do_nhm_cstates && !do_slm_cstates)
865 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
866 if (do_snb_cstates)
867 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
868 if (do_c8_c9_c10) {
869 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
870 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
871 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
872 }
874 if (do_rapl) {
875 if (do_rapl & RAPL_PKG)
876 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
877 if (do_rapl & RAPL_CORES)
878 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
879 if (do_rapl & RAPL_GFX)
880 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
881 if (do_rapl & RAPL_DRAM)
882 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
883 }
884 done:
885 return 0;
886 }
888 static int
889 turbostat_read(user_data_t * not_used)
890 {
891 int ret;
893 if (!allocated) {
894 if ((ret = setup_all_buffers()) < 0)
895 return ret;
896 }
898 if (for_all_proc_cpus(cpu_is_not_present)) {
899 free_all_buffers();
900 if ((ret = setup_all_buffers()) < 0)
901 return ret;
902 if (for_all_proc_cpus(cpu_is_not_present))
903 return -ERR_CPU_NOT_PRESENT;
904 }
906 if (!initialized) {
907 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
908 return ret;
909 gettimeofday(&tv_even, (struct timezone *)NULL);
910 is_even = 1;
911 initialized = 1;
912 return 0;
913 }
915 if (is_even) {
916 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
917 return ret;
918 gettimeofday(&tv_odd, (struct timezone *)NULL);
919 is_even = 0;
920 timersub(&tv_odd, &tv_even, &tv_delta);
921 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
922 return ret;
923 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
924 return ret;
925 } else {
926 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
927 return ret;
928 gettimeofday(&tv_even, (struct timezone *)NULL);
929 is_even = 1;
930 timersub(&tv_even, &tv_odd, &tv_delta);
931 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
932 return ret;
933 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
934 return ret;
935 }
936 return 0;
937 }
939 static int __attribute__((warn_unused_result))
940 check_dev_msr()
941 {
942 struct stat sb;
944 if (stat("/dev/cpu/0/msr", &sb)) {
945 ERROR("no /dev/cpu/0/msr\n"
946 "Try \"# modprobe msr\"");
947 return -ERR_NO_MSR;
948 }
949 return 0;
950 }
952 static int __attribute__((warn_unused_result))
953 check_super_user()
954 {
955 if (getuid() != 0) {
956 ERROR("must be root");
957 return -ERR_NOT_ROOT;
958 }
959 return 0;
960 }
963 #define RAPL_POWER_GRANULARITY 0x7FFF /* 15 bit power granularity */
964 #define RAPL_TIME_GRANULARITY 0x3F /* 6 bit time granularity */
966 static double
967 get_tdp(unsigned int model)
968 {
969 unsigned long long msr;
971 if (do_rapl & RAPL_PKG_POWER_INFO)
972 if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
973 return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
975 switch (model) {
976 case 0x37:
977 case 0x4D:
978 return 30.0;
979 default:
980 return 135.0;
981 }
982 }
985 /*
986 * rapl_probe()
987 *
988 * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
989 */
990 static void
991 rapl_probe(unsigned int family, unsigned int model)
992 {
993 unsigned long long msr;
994 unsigned int time_unit;
995 double tdp;
997 if (!genuine_intel)
998 return;
1000 if (family != 6)
1001 return;
1003 switch (model) {
1004 case 0x2A:
1005 case 0x3A:
1006 case 0x3C: /* HSW */
1007 case 0x45: /* HSW */
1008 case 0x46: /* HSW */
1009 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
1010 break;
1011 case 0x3F: /* HSX */
1012 do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
1013 break;
1014 case 0x2D:
1015 case 0x3E:
1016 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
1017 break;
1018 case 0x37: /* BYT */
1019 case 0x4D: /* AVN */
1020 do_rapl = RAPL_PKG | RAPL_CORES ;
1021 break;
1022 default:
1023 return;
1024 }
1026 /* units on package 0, verify later other packages match */
1027 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1028 return;
1030 rapl_power_units = 1.0 / (1 << (msr & 0xF));
1031 if (model == 0x37)
1032 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1033 else
1034 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1036 time_unit = msr >> 16 & 0xF;
1037 if (time_unit == 0)
1038 time_unit = 0xA;
1040 rapl_time_units = 1.0 / (1 << (time_unit));
1042 tdp = get_tdp(model);
1044 rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
1045 // if (verbose)
1046 // fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
1048 return;
1049 }
1051 static int
1052 is_snb(unsigned int family, unsigned int model)
1053 {
1054 if (!genuine_intel)
1055 return 0;
1057 switch (model) {
1058 case 0x2A:
1059 case 0x2D:
1060 case 0x3A: /* IVB */
1061 case 0x3E: /* IVB Xeon */
1062 case 0x3C: /* HSW */
1063 case 0x3F: /* HSW */
1064 case 0x45: /* HSW */
1065 case 0x46: /* HSW */
1066 return 1;
1067 }
1068 return 0;
1069 }
1071 static int
1072 has_c8_c9_c10(unsigned int family, unsigned int model)
1073 {
1074 if (!genuine_intel)
1075 return 0;
1077 switch (model) {
1078 case 0x45:
1079 return 1;
1080 }
1081 return 0;
1082 }
1085 static int
1086 is_slm(unsigned int family, unsigned int model)
1087 {
1088 if (!genuine_intel)
1089 return 0;
1090 switch (model) {
1091 case 0x37: /* BYT */
1092 case 0x4D: /* AVN */
1093 return 1;
1094 }
1095 return 0;
1096 }
1098 /*
1099 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
1100 * the Thermal Control Circuit (TCC) activates.
1101 * This is usually equal to tjMax.
1102 *
1103 * Older processors do not have this MSR, so there we guess,
1104 * but also allow cmdline over-ride with -T.
1105 *
1106 * Several MSR temperature values are in units of degrees-C
1107 * below this value, including the Digital Thermal Sensor (DTS),
1108 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
1109 */
1110 static int __attribute__((warn_unused_result))
1111 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1112 {
1113 unsigned long long msr;
1114 unsigned int target_c_local;
1115 int cpu;
1117 /* tcc_activation_temp is used only for dts or ptm */
1118 if (!(do_dts || do_ptm))
1119 return 0;
1121 /* this is a per-package concept */
1122 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1123 return 0;
1125 cpu = t->cpu_id;
1126 if (cpu_migrate(cpu)) {
1127 ERROR("Could not migrate to CPU %d\n", cpu);
1128 return -ERR_CPU_MIGRATE;
1129 }
1131 if (tcc_activation_temp_override != 0) {
1132 tcc_activation_temp = tcc_activation_temp_override;
1133 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
1134 cpu, tcc_activation_temp);
1135 return 0;
1136 }
1138 /* Temperature Target MSR is Nehalem and newer only */
1139 if (!do_nehalem_platform_info)
1140 goto guess;
1142 if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
1143 goto guess;
1145 target_c_local = (msr >> 16) & 0x7F;
1147 if (target_c_local < 85 || target_c_local > 127)
1148 goto guess;
1150 tcc_activation_temp = target_c_local;
1152 return 0;
1154 guess:
1155 tcc_activation_temp = TJMAX_DEFAULT;
1156 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1157 cpu, tcc_activation_temp);
1159 return 0;
1160 }
1162 static int __attribute__((warn_unused_result))
1163 check_cpuid()
1164 {
1165 unsigned int eax, ebx, ecx, edx, max_level;
1166 unsigned int fms, family, model;
1168 eax = ebx = ecx = edx = 0;
1170 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1172 if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1173 genuine_intel = 1;
1175 fms = 0;
1176 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1177 family = (fms >> 8) & 0xf;
1178 model = (fms >> 4) & 0xf;
1179 if (family == 6 || family == 0xf)
1180 model += ((fms >> 16) & 0xf) << 4;
1182 if (!(edx & (1 << 5))) {
1183 ERROR("CPUID: no MSR");
1184 return -ERR_NO_MSR;
1185 }
1187 /*
1188 * check max extended function levels of CPUID.
1189 * This is needed to check for invariant TSC.
1190 * This check is valid for both Intel and AMD.
1191 */
1192 ebx = ecx = edx = 0;
1193 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1195 if (max_level < 0x80000007) {
1196 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1197 return -ERR_NO_INVARIANT_TSC;
1198 }
1200 /*
1201 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1202 * this check is valid for both Intel and AMD
1203 */
1204 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1205 if (!(edx & (1 << 8))) {
1206 ERROR("No invariant TSC");
1207 return -ERR_NO_INVARIANT_TSC;
1208 }
1210 /*
1211 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1212 * this check is valid for both Intel and AMD
1213 */
1215 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1216 do_dts = eax & (1 << 0);
1217 do_ptm = eax & (1 << 6);
1218 has_epb = ecx & (1 << 3);
1220 if (!(ecx & (1 << 0))) {
1221 ERROR("No APERF");
1222 return -ERR_NO_APERF;
1223 }
1225 do_nehalem_platform_info = genuine_intel;
1226 do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1227 do_smi = do_nhm_cstates;
1228 do_snb_cstates = is_snb(family, model);
1229 do_c8_c9_c10 = has_c8_c9_c10(family, model);
1230 do_slm_cstates = is_slm(family, model);
1232 rapl_probe(family, model);
1234 return 0;
1235 }
1239 static int __attribute__((warn_unused_result))
1240 topology_probe()
1241 {
1242 int i;
1243 int ret;
1244 int max_core_id = 0;
1245 int max_package_id = 0;
1246 int max_siblings = 0;
1247 struct cpu_topology {
1248 int core_id;
1249 int physical_package_id;
1250 } *cpus;
1252 /* Initialize num_cpus, max_cpu_num */
1253 topo.num_cpus = 0;
1254 topo.max_cpu_num = 0;
1255 ret = for_all_proc_cpus(count_cpus);
1256 if (ret < 0)
1257 return ret;
1259 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1261 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1262 if (cpus == NULL) {
1263 ERROR("calloc cpus");
1264 return -ERR_CALLOC;
1265 }
1267 /*
1268 * Allocate and initialize cpu_present_set
1269 */
1270 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1271 if (cpu_present_set == NULL) {
1272 free(cpus);
1273 ERROR("CPU_ALLOC");
1274 return -ERR_CPU_ALLOC;
1275 }
1276 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1277 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1278 ret = for_all_proc_cpus(mark_cpu_present);
1279 if (ret < 0) {
1280 free(cpus);
1281 return ret;
1282 }
1284 /*
1285 * Allocate and initialize cpu_affinity_set
1286 */
1287 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1288 if (cpu_affinity_set == NULL) {
1289 free(cpus);
1290 ERROR("CPU_ALLOC");
1291 return -ERR_CPU_ALLOC;
1292 }
1293 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1294 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1297 /*
1298 * For online cpus
1299 * find max_core_id, max_package_id
1300 */
1301 for (i = 0; i <= topo.max_cpu_num; ++i) {
1302 int siblings;
1304 if (cpu_is_not_present(i)) {
1305 //if (verbose > 1)
1306 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1307 continue;
1308 }
1309 cpus[i].core_id = get_core_id(i);
1310 if (cpus[i].core_id < 0)
1311 return cpus[i].core_id;
1312 if (cpus[i].core_id > max_core_id)
1313 max_core_id = cpus[i].core_id;
1315 cpus[i].physical_package_id = get_physical_package_id(i);
1316 if (cpus[i].physical_package_id < 0)
1317 return cpus[i].physical_package_id;
1318 if (cpus[i].physical_package_id > max_package_id)
1319 max_package_id = cpus[i].physical_package_id;
1321 siblings = get_num_ht_siblings(i);
1322 if (siblings < 0)
1323 return siblings;
1324 if (siblings > max_siblings)
1325 max_siblings = siblings;
1326 DEBUG("cpu %d pkg %d core %d\n",
1327 i, cpus[i].physical_package_id, cpus[i].core_id);
1328 }
1329 topo.num_cores_per_pkg = max_core_id + 1;
1330 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1331 max_core_id, topo.num_cores_per_pkg);
1333 topo.num_packages = max_package_id + 1;
1334 DEBUG("max_package_id %d, sizing for %d packages\n",
1335 max_package_id, topo.num_packages);
1337 topo.num_threads_per_core = max_siblings;
1338 DEBUG("max_siblings %d\n", max_siblings);
1340 free(cpus);
1341 return 0;
1342 }
1344 static int
1345 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1346 {
1347 int i;
1349 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1350 topo.num_packages, sizeof(struct thread_data));
1351 if (*t == NULL)
1352 goto error;
1354 for (i = 0; i < topo.num_threads_per_core *
1355 topo.num_cores_per_pkg * topo.num_packages; i++)
1356 (*t)[i].cpu_id = -1;
1358 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1359 sizeof(struct core_data));
1360 if (*c == NULL)
1361 goto error;
1363 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1364 (*c)[i].core_id = -1;
1366 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1367 if (*p == NULL)
1368 goto error;
1370 for (i = 0; i < topo.num_packages; i++)
1371 (*p)[i].package_id = i;
1373 return 0;
1374 error:
1375 ERROR("calloc counters");
1376 return -ERR_CALLOC;
1377 }
1378 /*
1379 * init_counter()
1380 *
1381 * set cpu_id, core_num, pkg_num
1382 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1383 *
1384 * increment topo.num_cores when 1st core in pkg seen
1385 */
1386 static int
1387 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1388 struct pkg_data *pkg_base, int thread_num, int core_num,
1389 int pkg_num, int cpu_id)
1390 {
1391 int ret;
1392 struct thread_data *t;
1393 struct core_data *c;
1394 struct pkg_data *p;
1396 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1397 c = GET_CORE(core_base, core_num, pkg_num);
1398 p = GET_PKG(pkg_base, pkg_num);
1400 t->cpu_id = cpu_id;
1401 if (thread_num == 0) {
1402 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1403 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1404 return ret;
1405 } else if (ret != 0) {
1406 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1407 }
1408 }
1410 c->core_id = core_num;
1411 p->package_id = pkg_num;
1413 return 0;
1414 }
1417 static int
1418 initialize_counters(int cpu_id)
1419 {
1420 int my_thread_id, my_core_id, my_package_id;
1421 int ret;
1423 my_package_id = get_physical_package_id(cpu_id);
1424 if (my_package_id < 0)
1425 return my_package_id;
1426 my_core_id = get_core_id(cpu_id);
1427 if (my_core_id < 0)
1428 return my_core_id;
1430 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1431 return ret;
1432 } else if (ret != 0) {
1433 my_thread_id = 0;
1434 topo.num_cores++;
1435 } else {
1436 my_thread_id = 1;
1437 }
1439 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1440 if (ret < 0)
1441 return ret;
1442 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1443 if (ret < 0)
1444 return ret;
1445 return 0;
1446 }
1448 #define DO_OR_GOTO_ERR(something) \
1449 do { \
1450 ret = (something); \
1451 if (ret < 0) \
1452 goto err; \
1453 } while (0)
1455 static int setup_all_buffers(void)
1456 {
1457 int ret;
1459 DO_OR_GOTO_ERR(topology_probe());
1460 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1461 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1462 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1464 allocated = 1;
1465 return 0;
1466 err:
1467 free_all_buffers();
1468 return ret;
1469 }
1471 static int
1472 turbostat_init(void)
1473 {
1474 int ret;
1476 DO_OR_GOTO_ERR(check_cpuid());
1477 DO_OR_GOTO_ERR(check_dev_msr());
1478 DO_OR_GOTO_ERR(check_super_user());
1479 DO_OR_GOTO_ERR(setup_all_buffers());
1480 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1482 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1484 return 0;
1485 err:
1486 free_all_buffers();
1487 return ret;
1488 }
1490 void module_register(void);
1491 void module_register(void)
1492 {
1493 plugin_register_init(PLUGIN_NAME, turbostat_init);
1494 }