9337e90f695b100abc3c5d7b8b00f20c00a1a762
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_aperf;
71 static unsigned int has_epb;
72 static unsigned int units = 1000000000; /* Ghz etc */
73 static unsigned int genuine_intel;
74 static unsigned int has_invariant_tsc;
75 static unsigned int do_nehalem_platform_info;
76 static int do_smi;
77 static unsigned int show_pkg;
78 static unsigned int show_core;
79 static unsigned int show_cpu;
80 static unsigned int do_rapl;
81 static unsigned int do_dts;
82 static unsigned int do_ptm;
83 static unsigned int tcc_activation_temp;
84 static unsigned int tcc_activation_temp_override;
85 static double rapl_power_units, rapl_energy_units, rapl_time_units;
86 static double rapl_joule_counter_range;
88 #define RAPL_PKG (1 << 0)
89 /* 0x610 MSR_PKG_POWER_LIMIT */
90 /* 0x611 MSR_PKG_ENERGY_STATUS */
91 #define RAPL_PKG_PERF_STATUS (1 << 1)
92 /* 0x613 MSR_PKG_PERF_STATUS */
93 #define RAPL_PKG_POWER_INFO (1 << 2)
94 /* 0x614 MSR_PKG_POWER_INFO */
96 #define RAPL_DRAM (1 << 3)
97 /* 0x618 MSR_DRAM_POWER_LIMIT */
98 /* 0x619 MSR_DRAM_ENERGY_STATUS */
99 /* 0x61c MSR_DRAM_POWER_INFO */
100 #define RAPL_DRAM_PERF_STATUS (1 << 4)
101 /* 0x61b MSR_DRAM_PERF_STATUS */
103 #define RAPL_CORES (1 << 5)
104 /* 0x638 MSR_PP0_POWER_LIMIT */
105 /* 0x639 MSR_PP0_ENERGY_STATUS */
106 #define RAPL_CORE_POLICY (1 << 6)
107 /* 0x63a MSR_PP0_POLICY */
110 #define RAPL_GFX (1 << 7)
111 /* 0x640 MSR_PP1_POWER_LIMIT */
112 /* 0x641 MSR_PP1_ENERGY_STATUS */
113 /* 0x642 MSR_PP1_POLICY */
114 #define TJMAX_DEFAULT 100
116 int aperf_mperf_unstable;
117 int backwards_count;
118 char *progname;
120 cpu_set_t *cpu_present_set, *cpu_affinity_set;
121 size_t cpu_present_setsize, cpu_affinity_setsize;
123 struct thread_data {
124 unsigned long long tsc;
125 unsigned long long aperf;
126 unsigned long long mperf;
127 unsigned long long c1;
128 unsigned int smi_count;
129 unsigned int cpu_id;
130 unsigned int flags;
131 #define CPU_IS_FIRST_THREAD_IN_CORE 0x2
132 #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
133 } *thread_even, *thread_odd;
135 struct core_data {
136 unsigned long long c3;
137 unsigned long long c6;
138 unsigned long long c7;
139 unsigned int core_temp_c;
140 unsigned int core_id;
141 } *core_even, *core_odd;
143 struct pkg_data {
144 unsigned long long pc2;
145 unsigned long long pc3;
146 unsigned long long pc6;
147 unsigned long long pc7;
148 unsigned long long pc8;
149 unsigned long long pc9;
150 unsigned long long pc10;
151 unsigned int package_id;
152 unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
153 unsigned int energy_dram; /* MSR_DRAM_ENERGY_STATUS */
154 unsigned int energy_cores; /* MSR_PP0_ENERGY_STATUS */
155 unsigned int energy_gfx; /* MSR_PP1_ENERGY_STATUS */
156 unsigned int rapl_pkg_perf_status; /* MSR_PKG_PERF_STATUS */
157 unsigned int rapl_dram_perf_status; /* MSR_DRAM_PERF_STATUS */
158 unsigned int pkg_temp_c;
160 } *package_even, *package_odd;
162 #define ODD_COUNTERS thread_odd, core_odd, package_odd
163 #define EVEN_COUNTERS thread_even, core_even, package_even
164 static _Bool is_even = 1;
166 static _Bool allocated = 0;
167 static _Bool initialized = 0;
169 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
170 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
171 topo.num_threads_per_core + \
172 (core_no) * topo.num_threads_per_core + (thread_no))
173 #define GET_CORE(core_base, core_no, pkg_no) \
174 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
175 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
177 struct topo_params {
178 int num_packages;
179 int num_cpus;
180 int num_cores;
181 int max_cpu_num;
182 int num_cores_per_pkg;
183 int num_threads_per_core;
184 } topo;
186 struct timeval tv_even, tv_odd, tv_delta;
188 enum return_values {
189 OK = 0,
190 ERR_CPU_MIGRATE,
191 ERR_MSR_IA32_APERF,
192 ERR_MSR_IA32_MPERF,
193 ERR_MSR_SMI_COUNT,
194 ERR_MSR_CORE_C3_RESIDENCY,
195 ERR_MSR_CORE_C6_RESIDENCY,
196 ERR_MSR_CORE_C7_RESIDENCY,
197 ERR_MSR_IA32_THERM_STATUS,
198 ERR_MSR_PKG_C3_RESIDENCY,
199 ERR_MSR_PKG_C6_RESIDENCY,
200 ERR_MSR_PKG_C2_RESIDENCY,
201 ERR_MSR_PKG_C7_RESIDENCY,
202 ERR_MSR_PKG_C8_RESIDENCY,
203 ERR_MSR_PKG_C9_RESIDENCY,
204 ERR_MSR_PKG_C10_RESIDENCY,
205 ERR_MSR_PKG_ENERGY_STATUS,
206 ERR_MSR_PP0_ENERGY_STATUS,
207 ERR_MSR_DRAM_ENERGY_STATUS,
208 ERR_MSR_PP1_ENERGY_STATUS,
209 ERR_MSR_PKG_PERF_STATUS,
210 ERR_MSR_DRAM_PERF_STATUS,
211 ERR_MSR_IA32_PACKAGE_THERM_STATUS,
212 ERR_CPU_NOT_PRESENT,
213 ERR_NO_MSR,
214 ERR_CANT_OPEN_FILE,
215 ERR_CANT_READ_NUMBER,
216 ERR_CANT_READ_PROC_STAT,
217 ERR_NO_INVARIANT_TSC,
218 ERR_NO_APERF,
219 ERR_CALLOC,
220 ERR_CPU_ALLOC,
221 ERR_NOT_ROOT,
222 };
224 static int setup_all_buffers(void);
226 static int
227 cpu_is_not_present(int cpu)
228 {
229 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
230 }
231 /*
232 * run func(thread, core, package) in topology order
233 * skip non-present cpus
234 */
236 static int __attribute__((warn_unused_result))
237 for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
238 struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
239 {
240 int retval, pkg_no, core_no, thread_no;
242 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
243 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
244 for (thread_no = 0; thread_no <
245 topo.num_threads_per_core; ++thread_no) {
246 struct thread_data *t;
247 struct core_data *c;
248 struct pkg_data *p;
250 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
252 if (cpu_is_not_present(t->cpu_id))
253 continue;
255 c = GET_CORE(core_base, core_no, pkg_no);
256 p = GET_PKG(pkg_base, pkg_no);
258 retval = func(t, c, p);
259 if (retval)
260 return retval;
261 }
262 }
263 }
264 return 0;
265 }
267 static int __attribute__((warn_unused_result))
268 cpu_migrate(int cpu)
269 {
270 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
271 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
272 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
273 return -ERR_CPU_MIGRATE;
274 else
275 return 0;
276 }
278 static int __attribute__((warn_unused_result))
279 get_msr(int cpu, off_t offset, unsigned long long *msr)
280 {
281 ssize_t retval;
282 char pathname[32];
283 int fd;
285 ssnprintf(pathname, 32, "/dev/cpu/%d/msr", cpu);
286 fd = open(pathname, O_RDONLY);
287 if (fd < 0)
288 return -1;
290 retval = pread(fd, msr, sizeof *msr, offset);
291 close(fd);
293 if (retval != sizeof *msr) {
294 ERROR ("%s offset 0x%llx read failed\n", pathname, (unsigned long long)offset);
295 return -1;
296 }
298 return 0;
299 }
301 #define DELTA_WRAP32(new, old) \
302 if (new > old) { \
303 old = new - old; \
304 } else { \
305 old = 0x100000000 + new - old; \
306 }
308 static void
309 delta_package(struct pkg_data *new, struct pkg_data *old)
310 {
311 old->pc2 = new->pc2 - old->pc2;
312 old->pc3 = new->pc3 - old->pc3;
313 old->pc6 = new->pc6 - old->pc6;
314 old->pc7 = new->pc7 - old->pc7;
315 old->pc8 = new->pc8 - old->pc8;
316 old->pc9 = new->pc9 - old->pc9;
317 old->pc10 = new->pc10 - old->pc10;
318 old->pkg_temp_c = new->pkg_temp_c;
320 DELTA_WRAP32(new->energy_pkg, old->energy_pkg);
321 DELTA_WRAP32(new->energy_cores, old->energy_cores);
322 DELTA_WRAP32(new->energy_gfx, old->energy_gfx);
323 DELTA_WRAP32(new->energy_dram, old->energy_dram);
324 DELTA_WRAP32(new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
325 DELTA_WRAP32(new->rapl_dram_perf_status, old->rapl_dram_perf_status);
326 }
328 static void
329 delta_core(struct core_data *new, struct core_data *old)
330 {
331 old->c3 = new->c3 - old->c3;
332 old->c6 = new->c6 - old->c6;
333 old->c7 = new->c7 - old->c7;
334 old->core_temp_c = new->core_temp_c;
335 }
337 /*
338 * old = new - old
339 */
340 static int __attribute__((warn_unused_result))
341 delta_thread(struct thread_data *new, struct thread_data *old,
342 struct core_data *core_delta)
343 {
344 old->tsc = new->tsc - old->tsc;
346 /* check for TSC < 1 Mcycles over interval */
347 if (old->tsc < (1000 * 1000)) {
348 WARNING("Insanely slow TSC rate, TSC stops in idle?\n"
349 "You can disable all c-states by booting with \"idle=poll\"\n"
350 "or just the deep ones with \"processor.max_cstate=1\"");
351 return -1;
352 }
354 old->c1 = new->c1 - old->c1;
356 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
357 old->aperf = new->aperf - old->aperf;
358 old->mperf = new->mperf - old->mperf;
359 } else {
361 if (!aperf_mperf_unstable) {
362 WARNING("%s: APERF or MPERF went backwards *\n", progname);
363 WARNING("* Frequency results do not cover entire interval *\n");
364 WARNING("* fix this by running Linux-2.6.30 or later *\n");
366 aperf_mperf_unstable = 1;
367 }
368 /*
369 * mperf delta is likely a huge "positive" number
370 * can not use it for calculating c0 time
371 */
372 skip_c0 = 1;
373 skip_c1 = 1;
374 }
377 /*
378 * As counter collection is not atomic,
379 * it is possible for mperf's non-halted cycles + idle states
380 * to exceed TSC's all cycles: show c1 = 0% in that case.
381 */
382 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
383 old->c1 = 0;
384 else {
385 /* normal case, derive c1 */
386 old->c1 = old->tsc - old->mperf - core_delta->c3
387 - core_delta->c6 - core_delta->c7;
388 }
390 if (old->mperf == 0) {
391 WARNING("cpu%d MPERF 0!\n", old->cpu_id);
392 old->mperf = 1; /* divide by 0 protection */
393 }
395 if (do_smi)
396 old->smi_count = new->smi_count - old->smi_count;
398 return 0;
399 }
401 static int __attribute__((warn_unused_result))
402 delta_cpu(struct thread_data *t, struct core_data *c,
403 struct pkg_data *p, struct thread_data *t2,
404 struct core_data *c2, struct pkg_data *p2)
405 {
406 int ret;
408 /* calculate core delta only for 1st thread in core */
409 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
410 delta_core(c, c2);
412 /* always calculate thread delta */
413 ret = delta_thread(t, t2, c2); /* c2 is core delta */
414 if (ret != 0)
415 return ret;
417 /* calculate package delta only for 1st core in package */
418 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
419 delta_package(p, p2);
421 return 0;
422 }
424 static unsigned long long
425 rdtsc(void)
426 {
427 unsigned int low, high;
429 asm volatile("rdtsc" : "=a" (low), "=d" (high));
431 return low | ((unsigned long long)high) << 32;
432 }
435 /*
436 * get_counters(...)
437 * migrate to cpu
438 * acquire and record local counters for that cpu
439 */
440 static int __attribute__((warn_unused_result))
441 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
442 {
443 int cpu = t->cpu_id;
444 unsigned long long msr;
446 if (cpu_migrate(cpu)) {
447 WARNING("Could not migrate to CPU %d\n", cpu);
448 return -ERR_CPU_MIGRATE;
449 }
451 t->tsc = rdtsc(); /* we are running on local CPU of interest */
453 if (has_aperf) {
454 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
455 return -ERR_MSR_IA32_APERF;
456 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
457 return -ERR_MSR_IA32_MPERF;
458 }
460 if (do_smi) {
461 if (get_msr(cpu, MSR_SMI_COUNT, &msr))
462 return -ERR_MSR_SMI_COUNT;
463 t->smi_count = msr & 0xFFFFFFFF;
464 }
466 /* collect core counters only for 1st thread in core */
467 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
468 return 0;
470 if (do_nhm_cstates && !do_slm_cstates) {
471 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
472 return -ERR_MSR_CORE_C3_RESIDENCY;
473 }
475 if (do_nhm_cstates) {
476 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
477 return -ERR_MSR_CORE_C6_RESIDENCY;
478 }
480 if (do_snb_cstates)
481 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
482 return -ERR_MSR_CORE_C7_RESIDENCY;
484 if (do_dts) {
485 if (get_msr(cpu, MSR_IA32_THERM_STATUS, &msr))
486 return -ERR_MSR_IA32_THERM_STATUS;
487 c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
488 }
491 /* collect package counters only for 1st core in package */
492 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
493 return 0;
495 if (do_nhm_cstates && !do_slm_cstates) {
496 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
497 return -ERR_MSR_PKG_C3_RESIDENCY;
498 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
499 return -ERR_MSR_PKG_C6_RESIDENCY;
500 }
501 if (do_snb_cstates) {
502 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
503 return -ERR_MSR_PKG_C2_RESIDENCY;
504 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
505 return -ERR_MSR_PKG_C7_RESIDENCY;
506 }
507 if (do_c8_c9_c10) {
508 if (get_msr(cpu, MSR_PKG_C8_RESIDENCY, &p->pc8))
509 return -ERR_MSR_PKG_C8_RESIDENCY;
510 if (get_msr(cpu, MSR_PKG_C9_RESIDENCY, &p->pc9))
511 return -ERR_MSR_PKG_C9_RESIDENCY;
512 if (get_msr(cpu, MSR_PKG_C10_RESIDENCY, &p->pc10))
513 return -ERR_MSR_PKG_C10_RESIDENCY;
514 }
515 if (do_rapl & RAPL_PKG) {
516 if (get_msr(cpu, MSR_PKG_ENERGY_STATUS, &msr))
517 return -ERR_MSR_PKG_ENERGY_STATUS;
518 p->energy_pkg = msr & 0xFFFFFFFF;
519 }
520 if (do_rapl & RAPL_CORES) {
521 if (get_msr(cpu, MSR_PP0_ENERGY_STATUS, &msr))
522 return MSR_PP0_ENERGY_STATUS;
523 p->energy_cores = msr & 0xFFFFFFFF;
524 }
525 if (do_rapl & RAPL_DRAM) {
526 if (get_msr(cpu, MSR_DRAM_ENERGY_STATUS, &msr))
527 return -ERR_MSR_DRAM_ENERGY_STATUS;
528 p->energy_dram = msr & 0xFFFFFFFF;
529 }
530 if (do_rapl & RAPL_GFX) {
531 if (get_msr(cpu, MSR_PP1_ENERGY_STATUS, &msr))
532 return -ERR_MSR_PP1_ENERGY_STATUS;
533 p->energy_gfx = msr & 0xFFFFFFFF;
534 }
535 if (do_rapl & RAPL_PKG_PERF_STATUS) {
536 if (get_msr(cpu, MSR_PKG_PERF_STATUS, &msr))
537 return -ERR_MSR_PKG_PERF_STATUS;
538 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
539 }
540 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
541 if (get_msr(cpu, MSR_DRAM_PERF_STATUS, &msr))
542 return -ERR_MSR_DRAM_PERF_STATUS;
543 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
544 }
545 if (do_ptm) {
546 if (get_msr(cpu, MSR_IA32_PACKAGE_THERM_STATUS, &msr))
547 return -ERR_MSR_IA32_PACKAGE_THERM_STATUS;
548 p->pkg_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
549 }
550 return 0;
551 }
553 static void
554 free_all_buffers(void)
555 {
556 allocated = 0;
557 initialized = 0;
559 CPU_FREE(cpu_present_set);
560 cpu_present_set = NULL;
561 cpu_present_set = 0;
563 CPU_FREE(cpu_affinity_set);
564 cpu_affinity_set = NULL;
565 cpu_affinity_setsize = 0;
567 free(thread_even);
568 free(core_even);
569 free(package_even);
571 thread_even = NULL;
572 core_even = NULL;
573 package_even = NULL;
575 free(thread_odd);
576 free(core_odd);
577 free(package_odd);
579 thread_odd = NULL;
580 core_odd = NULL;
581 package_odd = NULL;
582 }
584 /*
585 * Parse a file containing a single int.
586 */
587 static int __attribute__ ((format(printf,1,2)))
588 parse_int_file(const char *fmt, ...)
589 {
590 va_list args;
591 char path[PATH_MAX];
592 FILE *filep;
593 int value;
595 va_start(args, fmt);
596 vsnprintf(path, sizeof(path), fmt, args);
597 va_end(args);
598 filep = fopen(path, "r");
599 if (!filep) {
600 ERROR("%s: open failed", path);
601 return -ERR_CANT_OPEN_FILE;
602 }
603 if (fscanf(filep, "%d", &value) != 1) {
604 ERROR("%s: failed to parse number from file", path);
605 return -ERR_CANT_READ_NUMBER;
606 }
607 fclose(filep);
608 return value;
609 }
611 /*
612 * cpu_is_first_sibling_in_core(cpu)
613 * return 1 if given CPU is 1st HT sibling in the core
614 */
615 static int
616 cpu_is_first_sibling_in_core(int cpu)
617 {
618 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
619 }
621 /*
622 * cpu_is_first_core_in_package(cpu)
623 * return 1 if given CPU is 1st core in package
624 */
625 static int
626 cpu_is_first_core_in_package(int cpu)
627 {
628 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
629 }
631 static int
632 get_physical_package_id(int cpu)
633 {
634 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
635 }
637 static int
638 get_core_id(int cpu)
639 {
640 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
641 }
643 static int
644 get_num_ht_siblings(int cpu)
645 {
646 char path[80];
647 FILE *filep;
648 int sib1, sib2;
649 int matches;
650 char character;
652 ssnprintf(path, 80, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
653 filep = fopen(path, "r");
654 if (!filep) {
655 ERROR("%s: open failed", path);
656 return -ERR_CANT_OPEN_FILE;
657 }
658 /*
659 * file format:
660 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
661 * otherwinse 1 sibling (self).
662 */
663 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
665 fclose(filep);
667 if (matches == 3)
668 return 2;
669 else
670 return 1;
671 }
673 /*
674 * run func(thread, core, package) in topology order
675 * skip non-present cpus
676 */
679 static int __attribute__((warn_unused_result))
680 for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
681 struct pkg_data *, struct thread_data *, struct core_data *,
682 struct pkg_data *), struct thread_data *thread_base,
683 struct core_data *core_base, struct pkg_data *pkg_base,
684 struct thread_data *thread_base2, struct core_data *core_base2,
685 struct pkg_data *pkg_base2)
686 {
687 int retval, pkg_no, core_no, thread_no;
689 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
690 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
691 for (thread_no = 0; thread_no <
692 topo.num_threads_per_core; ++thread_no) {
693 struct thread_data *t, *t2;
694 struct core_data *c, *c2;
695 struct pkg_data *p, *p2;
697 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
699 if (cpu_is_not_present(t->cpu_id))
700 continue;
702 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
704 c = GET_CORE(core_base, core_no, pkg_no);
705 c2 = GET_CORE(core_base2, core_no, pkg_no);
707 p = GET_PKG(pkg_base, pkg_no);
708 p2 = GET_PKG(pkg_base2, pkg_no);
710 retval = func(t, c, p, t2, c2, p2);
711 if (retval)
712 return retval;
713 }
714 }
715 }
716 return 0;
717 }
719 /*
720 * run func(cpu) on every cpu in /proc/stat
721 * return max_cpu number
722 */
723 static int __attribute__((warn_unused_result))
724 for_all_proc_cpus(int (func)(int))
725 {
726 FILE *fp;
727 int cpu_num;
728 int retval;
730 fp = fopen(proc_stat, "r");
731 if (!fp) {
732 ERROR("%s: open failed", proc_stat);
733 return -ERR_CANT_OPEN_FILE;
734 }
736 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
737 if (retval != 0) {
738 ERROR("%s: failed to parse format", proc_stat);
739 return -ERR_CANT_READ_PROC_STAT;
740 }
742 while (1) {
743 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
744 if (retval != 1)
745 break;
747 retval = func(cpu_num);
748 if (retval) {
749 fclose(fp);
750 return(retval);
751 }
752 }
753 fclose(fp);
754 return 0;
755 }
757 /*
758 * count_cpus()
759 * remember the last one seen, it will be the max
760 */
761 static int
762 count_cpus(int cpu)
763 {
764 if (topo.max_cpu_num < cpu)
765 topo.max_cpu_num = cpu;
767 topo.num_cpus += 1;
768 return 0;
769 }
770 static int
771 mark_cpu_present(int cpu)
772 {
773 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
774 return 0;
775 }
778 static void
779 turbostat_submit (const char *plugin_instance,
780 const char *type, const char *type_instance,
781 gauge_t value)
782 {
783 value_list_t vl = VALUE_LIST_INIT;
784 value_t v;
786 v.gauge = value;
787 vl.values = &v;
788 vl.values_len = 1;
789 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
790 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
791 if (plugin_instance != NULL)
792 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
793 sstrncpy (vl.type, type, sizeof (vl.type));
794 if (type_instance != NULL)
795 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
797 plugin_dispatch_values (&vl);
798 }
800 /*
801 * column formatting convention & formats
802 * package: "pk" 2 columns %2d
803 * core: "cor" 3 columns %3d
804 * CPU: "CPU" 3 columns %3d
805 * Pkg_W: %6.2
806 * Cor_W: %6.2
807 * GFX_W: %5.2
808 * RAM_W: %5.2
809 * GHz: "GHz" 3 columns %3.2
810 * TSC: "TSC" 3 columns %3.2
811 * SMI: "SMI" 4 columns %4d
812 * percentage " %pc3" %6.2
813 * Perf Status percentage: %5.2
814 * "CTMP" 4 columns %4d
815 */
816 #define NAME_LEN 12
817 static int
818 submit_counters(struct thread_data *t, struct core_data *c,
819 struct pkg_data *p)
820 {
821 char name[NAME_LEN];
822 double interval_float;
824 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
826 snprintf(name, NAME_LEN, "cpu%02d", t->cpu_id);
828 if (do_nhm_cstates) {
829 if (!skip_c0)
830 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
831 if (!skip_c1)
832 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
833 }
835 /* GHz */
836 if (has_aperf && ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc))))
837 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / units * t->aperf / t->mperf / interval_float);
839 /* SMI */
840 if (do_smi)
841 turbostat_submit(NULL, "current", name, t->smi_count);
843 /* print per-core data only for 1st thread in core */
844 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
845 goto done;
847 snprintf(name, NAME_LEN, "core%02d", c->core_id);
849 if (do_nhm_cstates && !do_slm_cstates)
850 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
851 if (do_nhm_cstates)
852 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
853 if (do_snb_cstates)
854 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
856 if (do_dts)
857 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
859 /* print per-package data only for 1st core in package */
860 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
861 goto done;
863 snprintf(name, NAME_LEN, "pkg%02d", p->package_id);
865 if (do_ptm)
866 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
868 if (do_snb_cstates)
869 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
870 if (do_nhm_cstates && !do_slm_cstates)
871 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
872 if (do_nhm_cstates && !do_slm_cstates)
873 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
874 if (do_snb_cstates)
875 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
876 if (do_c8_c9_c10) {
877 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
878 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
879 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
880 }
882 if (do_rapl) {
883 if (do_rapl & RAPL_PKG)
884 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
885 if (do_rapl & RAPL_CORES)
886 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
887 if (do_rapl & RAPL_GFX)
888 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
889 if (do_rapl & RAPL_DRAM)
890 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
891 }
892 done:
893 return 0;
894 }
896 static int
897 turbostat_read(user_data_t * not_used)
898 {
899 int ret;
901 if (!allocated) {
902 if ((ret = setup_all_buffers()) < 0)
903 return ret;
904 }
906 if (for_all_proc_cpus(cpu_is_not_present)) {
907 free_all_buffers();
908 if ((ret = setup_all_buffers()) < 0)
909 return ret;
910 if (for_all_proc_cpus(cpu_is_not_present))
911 return -ERR_CPU_NOT_PRESENT;
912 }
914 if (!initialized) {
915 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
916 return ret;
917 gettimeofday(&tv_even, (struct timezone *)NULL);
918 is_even = 1;
919 initialized = 1;
920 return 0;
921 }
923 if (is_even) {
924 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
925 return ret;
926 gettimeofday(&tv_odd, (struct timezone *)NULL);
927 is_even = 0;
928 timersub(&tv_odd, &tv_even, &tv_delta);
929 if ((ret = for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS)) < 0)
930 return ret;
931 if ((ret = for_all_cpus(submit_counters, EVEN_COUNTERS)) < 0)
932 return ret;
933 } else {
934 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
935 return ret;
936 gettimeofday(&tv_even, (struct timezone *)NULL);
937 is_even = 1;
938 timersub(&tv_even, &tv_odd, &tv_delta);
939 if ((ret = for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS)) < 0)
940 return ret;
941 if ((ret = for_all_cpus(submit_counters, ODD_COUNTERS)) < 0)
942 return ret;
943 }
944 return 0;
945 }
947 static int __attribute__((warn_unused_result))
948 check_dev_msr()
949 {
950 struct stat sb;
952 if (stat("/dev/cpu/0/msr", &sb)) {
953 ERROR("no /dev/cpu/0/msr\n"
954 "Try \"# modprobe msr\"");
955 return -ERR_NO_MSR;
956 }
957 return 0;
958 }
960 static int __attribute__((warn_unused_result))
961 check_super_user()
962 {
963 if (getuid() != 0) {
964 ERROR("must be root");
965 return -ERR_NOT_ROOT;
966 }
967 return 0;
968 }
971 #define RAPL_POWER_GRANULARITY 0x7FFF /* 15 bit power granularity */
972 #define RAPL_TIME_GRANULARITY 0x3F /* 6 bit time granularity */
974 static double
975 get_tdp(unsigned int model)
976 {
977 unsigned long long msr;
979 if (do_rapl & RAPL_PKG_POWER_INFO)
980 if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
981 return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
983 switch (model) {
984 case 0x37:
985 case 0x4D:
986 return 30.0;
987 default:
988 return 135.0;
989 }
990 }
993 /*
994 * rapl_probe()
995 *
996 * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
997 */
998 static void
999 rapl_probe(unsigned int family, unsigned int model)
1000 {
1001 unsigned long long msr;
1002 unsigned int time_unit;
1003 double tdp;
1005 if (!genuine_intel)
1006 return;
1008 if (family != 6)
1009 return;
1011 switch (model) {
1012 case 0x2A:
1013 case 0x3A:
1014 case 0x3C: /* HSW */
1015 case 0x45: /* HSW */
1016 case 0x46: /* HSW */
1017 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
1018 break;
1019 case 0x3F: /* HSX */
1020 do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
1021 break;
1022 case 0x2D:
1023 case 0x3E:
1024 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
1025 break;
1026 case 0x37: /* BYT */
1027 case 0x4D: /* AVN */
1028 do_rapl = RAPL_PKG | RAPL_CORES ;
1029 break;
1030 default:
1031 return;
1032 }
1034 /* units on package 0, verify later other packages match */
1035 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1036 return;
1038 rapl_power_units = 1.0 / (1 << (msr & 0xF));
1039 if (model == 0x37)
1040 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1041 else
1042 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1044 time_unit = msr >> 16 & 0xF;
1045 if (time_unit == 0)
1046 time_unit = 0xA;
1048 rapl_time_units = 1.0 / (1 << (time_unit));
1050 tdp = get_tdp(model);
1052 rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
1053 // if (verbose)
1054 // fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
1056 return;
1057 }
1059 static int
1060 is_snb(unsigned int family, unsigned int model)
1061 {
1062 if (!genuine_intel)
1063 return 0;
1065 switch (model) {
1066 case 0x2A:
1067 case 0x2D:
1068 case 0x3A: /* IVB */
1069 case 0x3E: /* IVB Xeon */
1070 case 0x3C: /* HSW */
1071 case 0x3F: /* HSW */
1072 case 0x45: /* HSW */
1073 case 0x46: /* HSW */
1074 return 1;
1075 }
1076 return 0;
1077 }
1079 static int
1080 has_c8_c9_c10(unsigned int family, unsigned int model)
1081 {
1082 if (!genuine_intel)
1083 return 0;
1085 switch (model) {
1086 case 0x45:
1087 return 1;
1088 }
1089 return 0;
1090 }
1093 static int
1094 is_slm(unsigned int family, unsigned int model)
1095 {
1096 if (!genuine_intel)
1097 return 0;
1098 switch (model) {
1099 case 0x37: /* BYT */
1100 case 0x4D: /* AVN */
1101 return 1;
1102 }
1103 return 0;
1104 }
1106 /*
1107 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
1108 * the Thermal Control Circuit (TCC) activates.
1109 * This is usually equal to tjMax.
1110 *
1111 * Older processors do not have this MSR, so there we guess,
1112 * but also allow cmdline over-ride with -T.
1113 *
1114 * Several MSR temperature values are in units of degrees-C
1115 * below this value, including the Digital Thermal Sensor (DTS),
1116 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
1117 */
1118 static int __attribute__((warn_unused_result))
1119 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
1120 {
1121 unsigned long long msr;
1122 unsigned int target_c_local;
1123 int cpu;
1125 /* tcc_activation_temp is used only for dts or ptm */
1126 if (!(do_dts || do_ptm))
1127 return 0;
1129 /* this is a per-package concept */
1130 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
1131 return 0;
1133 cpu = t->cpu_id;
1134 if (cpu_migrate(cpu)) {
1135 ERROR("Could not migrate to CPU %d\n", cpu);
1136 return -ERR_CPU_MIGRATE;
1137 }
1139 if (tcc_activation_temp_override != 0) {
1140 tcc_activation_temp = tcc_activation_temp_override;
1141 ERROR("cpu%d: Using cmdline TCC Target (%d C)\n",
1142 cpu, tcc_activation_temp);
1143 return 0;
1144 }
1146 /* Temperature Target MSR is Nehalem and newer only */
1147 if (!do_nehalem_platform_info)
1148 goto guess;
1150 if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
1151 goto guess;
1153 target_c_local = (msr >> 16) & 0x7F;
1155 if (target_c_local < 85 || target_c_local > 127)
1156 goto guess;
1158 tcc_activation_temp = target_c_local;
1160 return 0;
1162 guess:
1163 tcc_activation_temp = TJMAX_DEFAULT;
1164 WARNING("cpu%d: Guessing tjMax %d C, Please use -T to specify\n",
1165 cpu, tcc_activation_temp);
1167 return 0;
1168 }
1170 static int __attribute__((warn_unused_result))
1171 check_cpuid()
1172 {
1173 unsigned int eax, ebx, ecx, edx, max_level;
1174 unsigned int fms, family, model;
1176 eax = ebx = ecx = edx = 0;
1178 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1180 if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1181 genuine_intel = 1;
1183 fms = 0;
1184 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1185 family = (fms >> 8) & 0xf;
1186 model = (fms >> 4) & 0xf;
1187 if (family == 6 || family == 0xf)
1188 model += ((fms >> 16) & 0xf) << 4;
1190 if (!(edx & (1 << 5))) {
1191 ERROR("CPUID: no MSR");
1192 return -ERR_NO_MSR;
1193 }
1195 /*
1196 * check max extended function levels of CPUID.
1197 * This is needed to check for invariant TSC.
1198 * This check is valid for both Intel and AMD.
1199 */
1200 ebx = ecx = edx = 0;
1201 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1203 if (max_level < 0x80000007) {
1204 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1205 return -ERR_NO_INVARIANT_TSC;
1206 }
1208 /*
1209 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1210 * this check is valid for both Intel and AMD
1211 */
1212 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1213 has_invariant_tsc = edx & (1 << 8);
1215 if (!has_invariant_tsc) {
1216 ERROR("No invariant TSC");
1217 return -ERR_NO_INVARIANT_TSC;
1218 }
1220 /*
1221 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1222 * this check is valid for both Intel and AMD
1223 */
1225 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1226 has_aperf = ecx & (1 << 0);
1227 do_dts = eax & (1 << 0);
1228 do_ptm = eax & (1 << 6);
1229 has_epb = ecx & (1 << 3);
1231 if (!has_aperf) {
1232 ERROR("No APERF");
1233 return -ERR_NO_APERF;
1234 }
1236 do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
1237 do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1238 do_smi = do_nhm_cstates;
1239 do_snb_cstates = is_snb(family, model);
1240 do_c8_c9_c10 = has_c8_c9_c10(family, model);
1241 do_slm_cstates = is_slm(family, model);
1243 rapl_probe(family, model);
1245 return 0;
1246 }
1250 static int __attribute__((warn_unused_result))
1251 topology_probe()
1252 {
1253 int i;
1254 int ret;
1255 int max_core_id = 0;
1256 int max_package_id = 0;
1257 int max_siblings = 0;
1258 struct cpu_topology {
1259 int core_id;
1260 int physical_package_id;
1261 } *cpus;
1263 /* Initialize num_cpus, max_cpu_num */
1264 topo.num_cpus = 0;
1265 topo.max_cpu_num = 0;
1266 ret = for_all_proc_cpus(count_cpus);
1267 if (ret < 0)
1268 return ret;
1269 if (topo.num_cpus > 1)
1270 show_cpu = 1;
1272 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1274 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1275 if (cpus == NULL) {
1276 ERROR("calloc cpus");
1277 return -ERR_CALLOC;
1278 }
1280 /*
1281 * Allocate and initialize cpu_present_set
1282 */
1283 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1284 if (cpu_present_set == NULL) {
1285 free(cpus);
1286 ERROR("CPU_ALLOC");
1287 return -ERR_CPU_ALLOC;
1288 }
1289 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1290 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1291 ret = for_all_proc_cpus(mark_cpu_present);
1292 if (ret < 0) {
1293 free(cpus);
1294 return ret;
1295 }
1297 /*
1298 * Allocate and initialize cpu_affinity_set
1299 */
1300 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1301 if (cpu_affinity_set == NULL) {
1302 free(cpus);
1303 ERROR("CPU_ALLOC");
1304 return -ERR_CPU_ALLOC;
1305 }
1306 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1307 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1310 /*
1311 * For online cpus
1312 * find max_core_id, max_package_id
1313 */
1314 for (i = 0; i <= topo.max_cpu_num; ++i) {
1315 int siblings;
1317 if (cpu_is_not_present(i)) {
1318 //if (verbose > 1)
1319 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1320 continue;
1321 }
1322 cpus[i].core_id = get_core_id(i);
1323 if (cpus[i].core_id < 0)
1324 return cpus[i].core_id;
1325 if (cpus[i].core_id > max_core_id)
1326 max_core_id = cpus[i].core_id;
1328 cpus[i].physical_package_id = get_physical_package_id(i);
1329 if (cpus[i].physical_package_id < 0)
1330 return cpus[i].physical_package_id;
1331 if (cpus[i].physical_package_id > max_package_id)
1332 max_package_id = cpus[i].physical_package_id;
1334 siblings = get_num_ht_siblings(i);
1335 if (siblings < 0)
1336 return siblings;
1337 if (siblings > max_siblings)
1338 max_siblings = siblings;
1339 DEBUG("cpu %d pkg %d core %d\n",
1340 i, cpus[i].physical_package_id, cpus[i].core_id);
1341 }
1342 topo.num_cores_per_pkg = max_core_id + 1;
1343 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1344 max_core_id, topo.num_cores_per_pkg);
1345 if (topo.num_cores_per_pkg > 1)
1346 show_core = 1;
1348 topo.num_packages = max_package_id + 1;
1349 DEBUG("max_package_id %d, sizing for %d packages\n",
1350 max_package_id, topo.num_packages);
1351 if (topo.num_packages > 1)
1352 show_pkg = 1;
1354 topo.num_threads_per_core = max_siblings;
1355 DEBUG("max_siblings %d\n", max_siblings);
1357 free(cpus);
1358 return 0;
1359 }
1361 static int
1362 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1363 {
1364 int i;
1366 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1367 topo.num_packages, sizeof(struct thread_data));
1368 if (*t == NULL)
1369 goto error;
1371 for (i = 0; i < topo.num_threads_per_core *
1372 topo.num_cores_per_pkg * topo.num_packages; i++)
1373 (*t)[i].cpu_id = -1;
1375 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1376 sizeof(struct core_data));
1377 if (*c == NULL)
1378 goto error;
1380 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1381 (*c)[i].core_id = -1;
1383 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1384 if (*p == NULL)
1385 goto error;
1387 for (i = 0; i < topo.num_packages; i++)
1388 (*p)[i].package_id = i;
1390 return 0;
1391 error:
1392 ERROR("calloc counters");
1393 return -ERR_CALLOC;
1394 }
1395 /*
1396 * init_counter()
1397 *
1398 * set cpu_id, core_num, pkg_num
1399 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1400 *
1401 * increment topo.num_cores when 1st core in pkg seen
1402 */
1403 static int
1404 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1405 struct pkg_data *pkg_base, int thread_num, int core_num,
1406 int pkg_num, int cpu_id)
1407 {
1408 int ret;
1409 struct thread_data *t;
1410 struct core_data *c;
1411 struct pkg_data *p;
1413 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1414 c = GET_CORE(core_base, core_num, pkg_num);
1415 p = GET_PKG(pkg_base, pkg_num);
1417 t->cpu_id = cpu_id;
1418 if (thread_num == 0) {
1419 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1420 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1421 return ret;
1422 } else if (ret != 0) {
1423 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1424 }
1425 }
1427 c->core_id = core_num;
1428 p->package_id = pkg_num;
1430 return 0;
1431 }
1434 static int
1435 initialize_counters(int cpu_id)
1436 {
1437 int my_thread_id, my_core_id, my_package_id;
1438 int ret;
1440 my_package_id = get_physical_package_id(cpu_id);
1441 if (my_package_id < 0)
1442 return my_package_id;
1443 my_core_id = get_core_id(cpu_id);
1444 if (my_core_id < 0)
1445 return my_core_id;
1447 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1448 return ret;
1449 } else if (ret != 0) {
1450 my_thread_id = 0;
1451 topo.num_cores++;
1452 } else {
1453 my_thread_id = 1;
1454 }
1456 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1457 if (ret < 0)
1458 return ret;
1459 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1460 if (ret < 0)
1461 return ret;
1462 return 0;
1463 }
1465 #define DO_OR_GOTO_ERR(something) \
1466 do { \
1467 ret = (something); \
1468 if (ret < 0) \
1469 goto err; \
1470 } while (0)
1472 static int setup_all_buffers(void)
1473 {
1474 int ret;
1476 DO_OR_GOTO_ERR(topology_probe());
1477 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1478 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1479 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1481 allocated = 1;
1482 return 0;
1483 err:
1484 free_all_buffers();
1485 return ret;
1486 }
1488 static int
1489 turbostat_init(void)
1490 {
1491 int ret;
1493 DO_OR_GOTO_ERR(check_cpuid());
1494 DO_OR_GOTO_ERR(check_dev_msr());
1495 DO_OR_GOTO_ERR(check_super_user());
1496 DO_OR_GOTO_ERR(setup_all_buffers());
1497 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1499 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1501 return 0;
1502 err:
1503 free_all_buffers();
1504 return ret;
1505 }
1507 void module_register(void);
1508 void module_register(void)
1509 {
1510 plugin_register_init(PLUGIN_NAME, turbostat_init);
1511 }