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_CPU_NOT_PRESENT,
201 ERR_NO_MSR,
202 ERR_CANT_OPEN_FILE,
203 ERR_CANT_READ_NUMBER,
204 ERR_CANT_READ_PROC_STAT,
205 ERR_NO_INVARIANT_TSC,
206 ERR_NO_APERF,
207 ERR_CALLOC,
208 ERR_CPU_ALLOC,
209 ERR_NOT_ROOT,
210 UNSUPPORTED_CPU,
211 };
213 static int setup_all_buffers(void);
215 static int
216 cpu_is_not_present(int cpu)
217 {
218 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
219 }
220 /*
221 * run func(thread, core, package) in topology order
222 * skip non-present cpus
223 */
225 static int __attribute__((warn_unused_result))
226 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
227 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
228 {
229 int retval, pkg_no, core_no, thread_no;
231 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
232 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
233 for (thread_no = 0; thread_no <
234 topo.num_threads_per_core; ++thread_no) {
235 struct thread_data *t;
236 struct core_data *c;
237 struct pkg_data *p;
239 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
241 if (cpu_is_not_present(t->cpu_id))
242 continue;
244 c = GET_CORE(core_base, core_no, pkg_no);
245 p = GET_PKG(pkg_base, pkg_no);
247 retval = func(t, c, p);
248 if (retval)
249 return retval;
250 }
251 }
252 }
253 return 0;
254 }
256 static int __attribute__((warn_unused_result))
257 cpu_migrate(int cpu)
258 {
259 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
260 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
261 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
262 return -ERR_CPU_MIGRATE;
263 else
264 return 0;
265 }
267 static int __attribute__((warn_unused_result))
268 get_msr(int cpu, off_t offset, unsigned long long *msr)
269 {
270 ssize_t retval;
271 char pathname[32];
272 int fd;
274 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
275 fd = open(pathname, O_RDONLY);
276 if (fd < 0)
277 return -1;
279 retval = pread(fd, msr, sizeof *msr, offset);
280 close(fd);
282 if (retval != sizeof *msr) {
283 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
284 return -1;
285 }
287 return 0;
288 }
290 #define DELTA_WRAP32(new, old) \
291 if (new > old) { \
292 old = new - old; \
293 } else { \
294 old = 0x100000000 + new - old; \
295 }
297 static void
298 delta_package(struct pkg_data *new, struct pkg_data *old)
299 {
300 old->pc2 = new->pc2 - old->pc2;
301 old->pc3 = new->pc3 - old->pc3;
302 old->pc6 = new->pc6 - old->pc6;
303 old->pc7 = new->pc7 - old->pc7;
304 old->pc8 = new->pc8 - old->pc8;
305 old->pc9 = new->pc9 - old->pc9;
306 old->pc10 = new->pc10 - old->pc10;
307 old->pkg_temp_c = new->pkg_temp_c;
309 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
310 DELTA_WRAP32(new->energy_cores, old->energy_cores);
311 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
312 DELTA_WRAP32(new->energy_dram, old->energy_dram);
313 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
314 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
315 }
317 static void
318 delta_core(struct core_data *new, struct core_data *old)
319 {
320 old->c3 = new->c3 - old->c3;
321 old->c6 = new->c6 - old->c6;
322 old->c7 = new->c7 - old->c7;
323 old->core_temp_c = new->core_temp_c;
324 }
326 /*
327 * old = new - old
328 */
329 static int __attribute__((warn_unused_result))
330 delta_thread(struct thread_data *new, struct thread_data *old,
331 struct core_data *core_delta)
332 {
333 old->tsc = new->tsc - old->tsc;
335 /* check for TSC < 1 Mcycles over interval */
336 if (old->tsc < (1000 * 1000)) {
337 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
338 "You can disable all c-states by booting with \"idle=poll\"\n"
339 "or just the deep ones with \"processor.max_cstate=1\"");
340 return -1;
341 }
343 old->c1 = new->c1 - old->c1;
345 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
346 old->aperf = new->aperf - old->aperf;
347 old->mperf = new->mperf - old->mperf;
348 } else {
350 if (!aperf_mperf_unstable) {
351 WARNING("%s: APERF or MPERF went backwards *\n", progname);
352 WARNING("* Frequency results do not cover entire interval *\n");
353 WARNING("* fix this by running Linux-2.6.30 or later *\n");
355 aperf_mperf_unstable = 1;
356 }
357 /*
358 * mperf delta is likely a huge "positive" number
359 * can not use it for calculating c0 time
360 */
361 skip_c0 = 1;
362 skip_c1 = 1;
363 }
366 /*
367 * As counter collection is not atomic,
368 * it is possible for mperf's non-halted cycles + idle states
369 * to exceed TSC's all cycles: show c1 = 0% in that case.
370 */
371 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
372 old->c1 = 0;
373 else {
374 /* normal case, derive c1 */
375 old->c1 = old->tsc - old->mperf - core_delta->c3
376 - core_delta->c6 - core_delta->c7;
377 }
379 if (old->mperf == 0) {
380 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
381 old->mperf = 1; /* divide by 0 protection */
382 }
384 old->smi_count = new->smi_count - old->smi_count;
386 return 0;
387 }
389 static int __attribute__((warn_unused_result))
390 delta_cpu(struct thread_data *t, struct core_data *c,
391 struct pkg_data *p, struct thread_data *t2,
392 struct core_data *c2, struct pkg_data *p2)
393 {
394 int ret;
396 /* calculate core delta only for 1st thread in core */
397 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
398 delta_core(c, c2);
400 /* always calculate thread delta */
401 ret = delta_thread(t, t2, c2); /* c2 is core delta */
402 if (ret != 0)
403 return ret;
405 /* calculate package delta only for 1st core in package */
406 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
407 delta_package(p, p2);
409 return 0;
410 }
412 static unsigned long long
413 rdtsc(void)
414 {
415 unsigned int low, high;
417 asm volatile("rdtsc" : "=a" (low), "=d" (high));
419 return low | ((unsigned long long)high) << 32;
420 }
423 /*
424 * get_counters(...)
425 * migrate to cpu
426 * acquire and record local counters for that cpu
427 */
428 static int __attribute__((warn_unused_result))
429 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
430 {
431 int cpu = t->cpu_id;
432 unsigned long long msr;
434 if (cpu_migrate(cpu)) {
435 WARNING("Could not migrate to CPU %d\n", cpu);
436 return -ERR_CPU_MIGRATE;
437 }
439 t->tsc = rdtsc(); /* we are running on local CPU of interest */
441 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
442 return -ERR_MSR_IA32_APERF;
443 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
444 return -ERR_MSR_IA32_MPERF;
446 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
447 return -ERR_MSR_SMI_COUNT;
448 t->smi_count = msr & 0xFFFFFFFF;
450 /* collect core counters only for 1st thread in core */
451 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
452 return 0;
454 if (do_core_cstate & (1 << 3))
455 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
456 return -ERR_MSR_CORE_C3_RESIDENCY
457 if (do_core_cstate & (1 << 6))
458 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
459 return -ERR_MSR_CORE_C6_RESIDENCY
460 if (do_core_cstate & (1 << 7))
461 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
462 return -ERR_MSR_CORE_C7_RESIDENCY
464 if (do_dts) {
465 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
466 return -ERR_MSR_IA32_THERM_STATUS;
467 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
468 }
470 /* collect package counters only for 1st core in package */
471 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
472 return 0;
474 if (do_pkg_cstate & (1 << 2))
475 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
476 return -ERR_MSR_PKG_C2_RESIDENCY
477 if (do_pkg_cstate & (1 << 3))
478 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
479 return -ERR_MSR_PKG_C3_RESIDENCY
480 if (do_pkg_cstate & (1 << 6))
481 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
482 return -ERR_MSR_PKG_C6_RESIDENCY
483 if (do_pkg_cstate & (1 << 7))
484 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
485 return -ERR_MSR_PKG_C7_RESIDENCY
486 if (do_pkg_cstate & (1 << 8))
487 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
488 return -ERR_MSR_PKG_C8_RESIDENCY
489 if (do_pkg_cstate & (1 << 9))
490 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
491 return -ERR_MSR_PKG_C9_RESIDENCY
492 if (do_pkg_cstate & (1 << 10))
493 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
494 return -ERR_MSR_PKG_C10_RESIDENCY
496 if (do_rapl & RAPL_PKG) {
497 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
498 return -ERR_MSR_PKG_ENERGY_STATUS;
499 p->energy_pkg = msr & 0xFFFFFFFF;
500 }
501 if (do_rapl & RAPL_CORES) {
502 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
503 return MSR_PP0_ENERGY_STATUS;
504 p->energy_cores = msr & 0xFFFFFFFF;
505 }
506 if (do_rapl & RAPL_DRAM) {
507 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
508 return -ERR_MSR_DRAM_ENERGY_STATUS;
509 p->energy_dram = msr & 0xFFFFFFFF;
510 }
511 if (do_rapl & RAPL_GFX) {
512 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
513 return -ERR_MSR_PP1_ENERGY_STATUS;
514 p->energy_gfx = msr & 0xFFFFFFFF;
515 }
516 if (do_rapl & RAPL_PKG_PERF_STATUS) {
517 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
518 return -ERR_MSR_PKG_PERF_STATUS;
519 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
520 }
521 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
522 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
523 return -ERR_MSR_DRAM_PERF_STATUS;
524 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
525 }
526 if (do_ptm) {
527 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
528 return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
529 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
530 }
531 return 0;
532 }
534 static void
535 free_all_buffers(void)
536 {
537 allocated = 0;
538 initialized = 0;
540 CPU_FREE(cpu_present_set);
541 cpu_present_set = NULL;
542 cpu_present_set = 0;
544 CPU_FREE(cpu_affinity_set);
545 cpu_affinity_set = NULL;
546 cpu_affinity_setsize = 0;
548 free(thread_even);
549 free(core_even);
550 free(package_even);
552 thread_even = NULL;
553 core_even = NULL;
554 package_even = NULL;
556 free(thread_odd);
557 free(core_odd);
558 free(package_odd);
560 thread_odd = NULL;
561 core_odd = NULL;
562 package_odd = NULL;
563 }
565 /*
566 * Parse a file containing a single int.
567 */
568 static int __attribute__ ((format(printf,1,2)))
569 parse_int_file(const char *fmt, ...)
570 {
571 va_list args;
572 char path[PATH_MAX];
573 FILE *filep;
574 int value;
576 va_start(args, fmt);
577 vsnprintf(path, sizeof(path), fmt, args);
578 va_end(args);
579 filep = fopen(path, "r");
580 if (!filep) {
581 ERROR("%s: open failed", path);
582 return -ERR_CANT_OPEN_FILE;
583 }
584 if (fscanf(filep, "%d", &value) != 1) {
585 ERROR("%s: failed to parse number from file", path);
586 return -ERR_CANT_READ_NUMBER;
587 }
588 fclose(filep);
589 return value;
590 }
592 /*
593 * cpu_is_first_sibling_in_core(cpu)
594 * return 1 if given CPU is 1st HT sibling in the core
595 */
596 static int
597 cpu_is_first_sibling_in_core(int cpu)
598 {
599 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
600 }
602 /*
603 * cpu_is_first_core_in_package(cpu)
604 * return 1 if given CPU is 1st core in package
605 */
606 static int
607 cpu_is_first_core_in_package(int cpu)
608 {
609 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
610 }
612 static int
613 get_physical_package_id(int cpu)
614 {
615 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
616 }
618 static int
619 get_core_id(int cpu)
620 {
621 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
622 }
624 static int
625 get_num_ht_siblings(int cpu)
626 {
627 char path[80];
628 FILE *filep;
629 int sib1, sib2;
630 int matches;
631 char character;
633 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
634 filep = fopen(path, "r");
635 if (!filep) {
636 ERROR("%s: open failed", path);
637 return -ERR_CANT_OPEN_FILE;
638 }
639 /*
640 * file format:
641 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
642 * otherwinse 1 sibling (self).
643 */
644 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
646 fclose(filep);
648 if (matches == 3)
649 return 2;
650 else
651 return 1;
652 }
654 /*
655 * run func(thread, core, package) in topology order
656 * skip non-present cpus
657 */
660 static int __attribute__((warn_unused_result))
661 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
662 struct pkg_data *, struct thread_data *, struct core_data *,
663 struct pkg_data *), struct thread_data *thread_base,
664 struct core_data *core_base, struct pkg_data *pkg_base,
665 struct thread_data *thread_base2, struct core_data *core_base2,
666 struct pkg_data *pkg_base2)
667 {
668 int retval, pkg_no, core_no, thread_no;
670 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
671 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
672 for (thread_no = 0; thread_no <
673 topo.num_threads_per_core; ++thread_no) {
674 struct thread_data *t, *t2;
675 struct core_data *c, *c2;
676 struct pkg_data *p, *p2;
678 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
680 if (cpu_is_not_present(t->cpu_id))
681 continue;
683 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
685 c = GET_CORE(core_base, core_no, pkg_no);
686 c2 = GET_CORE(core_base2, core_no, pkg_no);
688 p = GET_PKG(pkg_base, pkg_no);
689 p2 = GET_PKG(pkg_base2, pkg_no);
691 retval = func(t, c, p, t2, c2, p2);
692 if (retval)
693 return retval;
694 }
695 }
696 }
697 return 0;
698 }
700 /*
701 * run func(cpu) on every cpu in /proc/stat
702 * return max_cpu number
703 */
704 static int __attribute__((warn_unused_result))
705 for_all_proc_cpus(int (func)(int))
706 {
707 FILE *fp;
708 int cpu_num;
709 int retval;
711 fp = fopen(proc_stat, "r");
712 if (!fp) {
713 ERROR("%s: open failed", proc_stat);
714 return -ERR_CANT_OPEN_FILE;
715 }
717 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
718 if (retval != 0) {
719 ERROR("%s: failed to parse format", proc_stat);
720 return -ERR_CANT_READ_PROC_STAT;
721 }
723 while (1) {
724 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
725 if (retval != 1)
726 break;
728 retval = func(cpu_num);
729 if (retval) {
730 fclose(fp);
731 return(retval);
732 }
733 }
734 fclose(fp);
735 return 0;
736 }
738 /*
739 * count_cpus()
740 * remember the last one seen, it will be the max
741 */
742 static int
743 count_cpus(int cpu)
744 {
745 if (topo.max_cpu_num < cpu)
746 topo.max_cpu_num = cpu;
748 topo.num_cpus += 1;
749 return 0;
750 }
751 static int
752 mark_cpu_present(int cpu)
753 {
754 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
755 return 0;
756 }
759 static void
760 turbostat_submit (const char *plugin_instance,
761 const char *type, const char *type_instance,
762 gauge_t value)
763 {
764 value_list_t vl = VALUE_LIST_INIT;
765 value_t v;
767 v.gauge = value;
768 vl.values = &v;
769 vl.values_len = 1;
770 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
771 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
772 if (plugin_instance != NULL)
773 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
774 sstrncpy (vl.type, type, sizeof (vl.type));
775 if (type_instance != NULL)
776 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
778 plugin_dispatch_values (&vl);
779 }
781 /*
782 * column formatting convention & formats
783 * package: "pk" 2 columns %2d
784 * core: "cor" 3 columns %3d
785 * CPU: "CPU" 3 columns %3d
786 * Pkg_W: %6.2
787 * Cor_W: %6.2
788 * GFX_W: %5.2
789 * RAM_W: %5.2
790 * GHz: "GHz" 3 columns %3.2
791 * TSC: "TSC" 3 columns %3.2
792 * SMI: "SMI" 4 columns %4d
793 * percentage " %pc3" %6.2
794 * Perf Status percentage: %5.2
795 * "CTMP" 4 columns %4d
796 */
797 #define NAME_LEN 12
798 static int
799 submit_counters(struct thread_data *t, struct core_data *c,
800 struct pkg_data *p)
801 {
802 char name[NAME_LEN];
803 double interval_float;
805 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
807 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
809 if (!skip_c0)
810 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
811 if (!skip_c1)
812 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
814 /* GHz */
815 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
816 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
818 /* SMI */
819 turbostat_submit(NULL, "current", name, t->smi_count);
821 /* print per-core data only for 1st thread in core */
822 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
823 goto done;
825 snprintf(name, NAME_LEN, "core%02d", c->core_id);
827 if (do_core_cstate & (1 << 3))
828 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
829 if (do_core_cstate & (1 << 6))
830 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
831 if (do_core_cstate & (1 << 7))
832 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
834 if (do_dts)
835 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
837 /* print per-package data only for 1st core in package */
838 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
839 goto done;
841 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
843 if (do_ptm)
844 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
846 if (do_pkg_cstate & (1 << 2))
847 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
848 if (do_pkg_cstate & (1 << 3))
849 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
850 if (do_pkg_cstate & (1 << 6))
851 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
852 if (do_pkg_cstate & (1 << 7))
853 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
854 if (do_pkg_cstate & (1 << 8))
855 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
856 if (do_pkg_cstate & (1 << 9))
857 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
858 if (do_pkg_cstate & (1 << 10))
859 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
861 if (do_rapl) {
862 if (do_rapl & RAPL_PKG)
863 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
864 if (do_rapl & RAPL_CORES)
865 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
866 if (do_rapl & RAPL_GFX)
867 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
868 if (do_rapl & RAPL_DRAM)
869 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
870 }
871 done:
872 return 0;
873 }
875 static int
876 turbostat_read(user_data_t * not_used)
877 {
878 int ret;
880 if (!allocated) {
881 if ((ret = setup_all_buffers()) < 0)
882 return ret;
883 }
885 if (for_all_proc_cpus(cpu_is_not_present)) {
886 free_all_buffers();
887 if ((ret = setup_all_buffers()) < 0)
888 return ret;
889 if (for_all_proc_cpus(cpu_is_not_present))
890 return -ERR_CPU_NOT_PRESENT;
891 }
893 if (!initialized) {
894 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
895 return ret;
896 gettimeofday(&tv_even, (struct timezone *)NULL);
897 is_even = 1;
898 initialized = 1;
899 return 0;
900 }
902 if (is_even) {
903 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
904 return ret;
905 gettimeofday(&tv_odd, (struct timezone *)NULL);
906 is_even = 0;
907 timersub(&tv_odd, &tv_even, &tv_delta);
908 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
909 return ret;
910 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
911 return ret;
912 } else {
913 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
914 return ret;
915 gettimeofday(&tv_even, (struct timezone *)NULL);
916 is_even = 1;
917 timersub(&tv_even, &tv_odd, &tv_delta);
918 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
919 return ret;
920 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
921 return ret;
922 }
923 return 0;
924 }
926 static int __attribute__((warn_unused_result))
927 check_dev_msr()
928 {
929 struct stat sb;
931 if (stat("/dev/cpu/0/msr", &sb)) {
932 ERROR("no /dev/cpu/0/msr\n"
933 "Try \"# modprobe msr\"");
934 return -ERR_NO_MSR;
935 }
936 return 0;
937 }
939 static int __attribute__((warn_unused_result))
940 check_super_user()
941 {
942 if (getuid() != 0) {
943 ERROR("must be root");
944 return -ERR_NOT_ROOT;
945 }
946 return 0;
947 }
949 /*
950 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
951 * the Thermal Control Circuit (TCC) activates.
952 * This is usually equal to tjMax.
953 *
954 * Older processors do not have this MSR, so there we guess,
955 * but also allow cmdline over-ride with -T.
956 *
957 * Several MSR temperature values are in units of degrees-C
958 * below this value, including the Digital Thermal Sensor (DTS),
959 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
960 */
961 static int __attribute__((warn_unused_result))
962 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
963 {
964 unsigned long long msr;
965 unsigned int target_c_local;
966 int cpu;
968 /* tcc_activation_temp is used only for dts or ptm */
969 if (!(do_dts || do_ptm))
970 return 0;
972 /* this is a per-package concept */
973 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
974 return 0;
976 cpu = t->cpu_id;
977 if (cpu_migrate(cpu)) {
978 ERROR("Could not migrate to CPU %d\n", cpu);
979 return -ERR_CPU_MIGRATE;
980 }
982 if (tcc_activation_temp_override != 0) {
983 tcc_activation_temp = tcc_activation_temp_override;
984 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
985 cpu, tcc_activation_temp);
986 return 0;
987 }
989 if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
990 goto guess;
992 target_c_local = (msr >> 16) & 0x7F;
994 if (target_c_local < 85 || target_c_local > 127)
995 goto guess;
997 tcc_activation_temp = target_c_local;
999 return 0;
1001 guess:
1002 tcc_activation_temp = TJMAX_DEFAULT;
1003 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1004 cpu, tcc_activation_temp);
1006 return 0;
1007 }
1009 /*
1010 * Identify the functionality of the CPU
1011 */
1012 static int __attribute__((warn_unused_result))
1013 probe_cpu()
1014 {
1015 unsigned int eax, ebx, ecx, edx, max_level;
1016 unsigned int fms, family, model;
1018 /* CPUID(0):
1019 * - EAX: Maximum Input Value for Basic CPUID Information
1020 * - EBX: "Genu" (0x756e6547)
1021 * - EDX: "ineI" (0x49656e69)
1022 * - ECX: "ntel" (0x6c65746e)
1023 */
1024 max_level = ebx = ecx = edx = 0;
1025 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1026 if (ebx != 0x756e6547 && edx != 0x49656e69 && ecx != 0x6c65746e) {
1027 ERROR("Unsupported CPU");
1028 return -UNSUPPORTED_CPU;
1029 }
1031 /* CPUID(1):
1032 * - EAX: Version Information: Type, Family, Model, and Stepping ID
1033 * + 4-7: Model ID
1034 * + 8-11: Family ID
1035 * + 12-13: Processor type
1036 * + 16-19: Extended Model ID
1037 * + 20-27: Extended Family ID
1038 * - EDX: Feature Information:
1039 * + 5: Support for MSR read/write operations
1040 */
1041 fms = ebx = ecx = edx = 0;
1042 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1043 family = (fms >> 8) & 0xf;
1044 model = (fms >> 4) & 0xf;
1045 if (family == 0xf)
1046 family += (fms >> 20) & 0xf;
1047 if (family == 6 || family == 0xf)
1048 model += ((fms >> 16) & 0xf) << 4;
1049 if (!(edx & (1 << 5))) {
1050 ERROR("CPUID: no MSR");
1051 return -ERR_NO_MSR;
1052 }
1054 /*
1055 * CPUID(0x80000000):
1056 * - EAX: Maximum Input Value for Extended Function CPUID Information
1057 *
1058 * This allows us to verify if the CPUID(0x80000007) can be called
1059 *
1060 * This check is valid for both Intel and AMD.
1061 */
1062 max_level = ebx = ecx = edx = 0;
1063 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1064 if (max_level < 0x80000007) {
1065 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1066 return -ERR_NO_INVARIANT_TSC;
1067 }
1069 /*
1070 * CPUID(0x80000007):
1071 * - EDX:
1072 * + 8: Invariant TSC available if set
1073 *
1074 * This check is valid for both Intel and AMD
1075 */
1076 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1077 if (!(edx & (1 << 8))) {
1078 ERROR("No invariant TSC");
1079 return -ERR_NO_INVARIANT_TSC;
1080 }
1082 /*
1083 * CPUID(6):
1084 * - EAX:
1085 * + 0: Digital temperature sensor is supported if set
1086 * + 6: Package thermal management is supported if set
1087 * - ECX:
1088 * + 0: Hardware Coordination Feedback Capability (Presence of IA32_MPERF and IA32_APERF).
1089 * + 3: The processor supports performance-energy bias preference if set.
1090 * It also implies the presence of a new architectural MSR called IA32_ENERGY_PERF_BIAS
1091 *
1092 * This check is valid for both Intel and AMD
1093 */
1094 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1095 do_dts = eax & (1 << 0);
1096 do_ptm = eax & (1 << 6);
1097 if (!(ecx & (1 << 0))) {
1098 ERROR("No APERF");
1099 return -ERR_NO_APERF;
1100 }
1102 /*
1103 * Enable or disable C states depending on the model and family
1104 */
1105 if (family == 6) {
1106 switch (model) {
1107 /* Atom (partial) */
1108 case 0x27:
1109 do_core_cstate = 0;
1110 do_pkg_cstate = (1 << 2) | (1 << 4) | (1 << 6);
1111 break;
1112 /* Silvermont */
1113 case 0x37: /* BYT */
1114 case 0x4A:
1115 case 0x4D: /* AVN */
1116 case 0x5A:
1117 case 0x5D:
1118 do_core_cstate = (1 << 1) | (1 << 6);
1119 do_pkg_cstate = (1 << 6);
1120 break;
1121 /* Nehalem */
1122 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1123 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1124 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1125 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1126 do_core_cstate = (1 << 3) | (1 << 6);
1127 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1128 break;
1129 /* Westmere */
1130 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1131 case 0x2C: /* Westmere EP - Gulftown */
1132 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1133 do_core_cstate = (1 << 3) | (1 << 6);
1134 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1135 break;
1136 /* Sandy Bridge */
1137 case 0x2A: /* SNB */
1138 case 0x2D: /* SNB Xeon */
1139 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1140 do_pkg_cstate = (1 << 2) | (1 << 3) | (1 << 6) | (1 << 7);
1141 break;
1142 /* Ivy Bridge */
1143 case 0x3A: /* IVB */
1144 case 0x3E: /* IVB Xeon */
1145 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1146 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1147 break;
1148 /* Haswell Bridge */
1149 case 0x3C: /* HSW */
1150 case 0x3F: /* HSW */
1151 case 0x46: /* HSW */
1152 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1153 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1154 break;
1155 case 0x45: /* HSW */
1156 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1157 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1158 break;
1159 /* Broadwel */
1160 case 0x4F: /* BDW */
1161 case 0x56: /* BDX-DE */
1162 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1163 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1164 break;
1165 case 0x3D: /* BDW */
1166 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1167 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1168 break;
1169 default:
1170 ERROR("Unsupported CPU");
1171 }
1172 switch (model) {
1173 case 0x2A:
1174 case 0x3A:
1175 case 0x3C:
1176 case 0x45:
1177 case 0x46:
1178 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_GFX;
1179 break;
1180 case 0x3F:
1181 do_rapl = RAPL_PKG | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1182 break;
1183 case 0x2D:
1184 case 0x3E:
1185 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1186 break;
1187 case 0x37:
1188 case 0x4D:
1189 do_rapl = RAPL_PKG | RAPL_CORES;
1190 break;
1191 default:
1192 do_rapl = 0;
1193 }
1194 } else {
1195 ERROR("Unsupported CPU");
1196 return -UNSUPPORTED_CPU;
1197 }
1199 if (do_rapl) {
1200 unsigned long msr;
1201 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1202 return 0;
1204 if (model == 0x37)
1205 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1206 else
1207 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1208 }
1210 return 0;
1211 }
1215 static int __attribute__((warn_unused_result))
1216 topology_probe()
1217 {
1218 int i;
1219 int ret;
1220 int max_core_id = 0;
1221 int max_package_id = 0;
1222 int max_siblings = 0;
1223 struct cpu_topology {
1224 int core_id;
1225 int physical_package_id;
1226 } *cpus;
1228 /* Initialize num_cpus, max_cpu_num */
1229 topo.num_cpus = 0;
1230 topo.max_cpu_num = 0;
1231 ret = for_all_proc_cpus(count_cpus);
1232 if (ret < 0)
1233 return ret;
1235 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1237 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1238 if (cpus == NULL) {
1239 ERROR("calloc cpus");
1240 return -ERR_CALLOC;
1241 }
1243 /*
1244 * Allocate and initialize cpu_present_set
1245 */
1246 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1247 if (cpu_present_set == NULL) {
1248 free(cpus);
1249 ERROR("CPU_ALLOC");
1250 return -ERR_CPU_ALLOC;
1251 }
1252 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1253 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1254 ret = for_all_proc_cpus(mark_cpu_present);
1255 if (ret < 0) {
1256 free(cpus);
1257 return ret;
1258 }
1260 /*
1261 * Allocate and initialize cpu_affinity_set
1262 */
1263 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1264 if (cpu_affinity_set == NULL) {
1265 free(cpus);
1266 ERROR("CPU_ALLOC");
1267 return -ERR_CPU_ALLOC;
1268 }
1269 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1270 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1273 /*
1274 * For online cpus
1275 * find max_core_id, max_package_id
1276 */
1277 for (i = 0; i <= topo.max_cpu_num; ++i) {
1278 int siblings;
1280 if (cpu_is_not_present(i)) {
1281 //if (verbose > 1)
1282 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1283 continue;
1284 }
1285 cpus[i].core_id = get_core_id(i);
1286 if (cpus[i].core_id < 0)
1287 return cpus[i].core_id;
1288 if (cpus[i].core_id > max_core_id)
1289 max_core_id = cpus[i].core_id;
1291 cpus[i].physical_package_id = get_physical_package_id(i);
1292 if (cpus[i].physical_package_id < 0)
1293 return cpus[i].physical_package_id;
1294 if (cpus[i].physical_package_id > max_package_id)
1295 max_package_id = cpus[i].physical_package_id;
1297 siblings = get_num_ht_siblings(i);
1298 if (siblings < 0)
1299 return siblings;
1300 if (siblings > max_siblings)
1301 max_siblings = siblings;
1302 DEBUG("cpu %d pkg %d core %d\n",
1303 i, cpus[i].physical_package_id, cpus[i].core_id);
1304 }
1305 topo.num_cores_per_pkg = max_core_id + 1;
1306 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1307 max_core_id, topo.num_cores_per_pkg);
1309 topo.num_packages = max_package_id + 1;
1310 DEBUG("max_package_id %d, sizing for %d packages\n",
1311 max_package_id, topo.num_packages);
1313 topo.num_threads_per_core = max_siblings;
1314 DEBUG("max_siblings %d\n", max_siblings);
1316 free(cpus);
1317 return 0;
1318 }
1320 static int
1321 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1322 {
1323 int i;
1325 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1326 topo.num_packages, sizeof(struct thread_data));
1327 if (*t == NULL)
1328 goto error;
1330 for (i = 0; i < topo.num_threads_per_core *
1331 topo.num_cores_per_pkg * topo.num_packages; i++)
1332 (*t)[i].cpu_id = -1;
1334 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1335 sizeof(struct core_data));
1336 if (*c == NULL)
1337 goto error;
1339 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1340 (*c)[i].core_id = -1;
1342 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1343 if (*p == NULL)
1344 goto error;
1346 for (i = 0; i < topo.num_packages; i++)
1347 (*p)[i].package_id = i;
1349 return 0;
1350 error:
1351 ERROR("calloc counters");
1352 return -ERR_CALLOC;
1353 }
1354 /*
1355 * init_counter()
1356 *
1357 * set cpu_id, core_num, pkg_num
1358 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1359 *
1360 * increment topo.num_cores when 1st core in pkg seen
1361 */
1362 static int
1363 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1364 struct pkg_data *pkg_base, int thread_num, int core_num,
1365 int pkg_num, int cpu_id)
1366 {
1367 int ret;
1368 struct thread_data *t;
1369 struct core_data *c;
1370 struct pkg_data *p;
1372 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1373 c = GET_CORE(core_base, core_num, pkg_num);
1374 p = GET_PKG(pkg_base, pkg_num);
1376 t->cpu_id = cpu_id;
1377 if (thread_num == 0) {
1378 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1379 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1380 return ret;
1381 } else if (ret != 0) {
1382 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1383 }
1384 }
1386 c->core_id = core_num;
1387 p->package_id = pkg_num;
1389 return 0;
1390 }
1393 static int
1394 initialize_counters(int cpu_id)
1395 {
1396 int my_thread_id, my_core_id, my_package_id;
1397 int ret;
1399 my_package_id = get_physical_package_id(cpu_id);
1400 if (my_package_id < 0)
1401 return my_package_id;
1402 my_core_id = get_core_id(cpu_id);
1403 if (my_core_id < 0)
1404 return my_core_id;
1406 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1407 return ret;
1408 } else if (ret != 0) {
1409 my_thread_id = 0;
1410 topo.num_cores++;
1411 } else {
1412 my_thread_id = 1;
1413 }
1415 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1416 if (ret < 0)
1417 return ret;
1418 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1419 if (ret < 0)
1420 return ret;
1421 return 0;
1422 }
1424 #define DO_OR_GOTO_ERR(something) \
1425 do { \
1426 ret = (something); \
1427 if (ret < 0) \
1428 goto err; \
1429 } while (0)
1431 static int setup_all_buffers(void)
1432 {
1433 int ret;
1435 DO_OR_GOTO_ERR(topology_probe());
1436 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1437 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1438 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1440 allocated = 1;
1441 return 0;
1442 err:
1443 free_all_buffers();
1444 return ret;
1445 }
1447 static int
1448 turbostat_init(void)
1449 {
1450 int ret;
1452 DO_OR_GOTO_ERR(check_super_user());
1453 DO_OR_GOTO_ERR(probe_cpu());
1454 DO_OR_GOTO_ERR(check_dev_msr());
1455 DO_OR_GOTO_ERR(setup_all_buffers());
1456 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1458 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1460 return 0;
1461 err:
1462 free_all_buffers();
1463 return ret;
1464 }
1466 void module_register(void);
1467 void module_register(void)
1468 {
1469 plugin_register_init(PLUGIN_NAME, turbostat_init);
1470 }