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 /*
64 * If set, aperf_mperf_unstable disables a/mperf based stats.
65 * This includes: C0 & C1 states, frequency
66 *
67 * This value is automatically set if mperf or aperf decreases
68 */
69 static _Bool aperf_mperf_unstable;
71 static unsigned int do_core_cstate;
72 static unsigned int do_pkg_cstate;
73 static _Bool do_dts;
74 static _Bool do_ptm;
75 static unsigned int tcc_activation_temp;
77 static unsigned int do_rapl;
78 static double rapl_energy_units;
80 #define RAPL_PKG (1 << 0)
81 /* 0x610 MSR_PKG_POWER_LIMIT */
82 /* 0x611 MSR_PKG_ENERGY_STATUS */
83 #define RAPL_PKG_PERF_STATUS (1 << 1)
84 /* 0x613 MSR_PKG_PERF_STATUS */
85 #define RAPL_PKG_POWER_INFO (1 << 2)
86 /* 0x614 MSR_PKG_POWER_INFO */
88 #define RAPL_DRAM (1 << 3)
89 /* 0x618 MSR_DRAM_POWER_LIMIT */
90 /* 0x619 MSR_DRAM_ENERGY_STATUS */
91 /* 0x61c MSR_DRAM_POWER_INFO */
92 #define RAPL_DRAM_PERF_STATUS (1 << 4)
93 /* 0x61b MSR_DRAM_PERF_STATUS */
95 #define RAPL_CORES (1 << 5)
96 /* 0x638 MSR_PP0_POWER_LIMIT */
97 /* 0x639 MSR_PP0_ENERGY_STATUS */
98 #define RAPL_CORE_POLICY (1 << 6)
99 /* 0x63a MSR_PP0_POLICY */
102 #define RAPL_GFX (1 << 7)
103 /* 0x640 MSR_PP1_POWER_LIMIT */
104 /* 0x641 MSR_PP1_ENERGY_STATUS */
105 /* 0x642 MSR_PP1_POLICY */
106 #define TJMAX_DEFAULT 100
108 cpu_set_t *cpu_present_set, *cpu_affinity_set, *cpu_saved_affinity_set;
109 size_t cpu_present_setsize, cpu_affinity_setsize, cpu_saved_affinity_setsize;
111 struct thread_data {
112 unsigned long long tsc;
113 unsigned long long aperf;
114 unsigned long long mperf;
115 unsigned long long c1;
116 unsigned int smi_count;
117 unsigned int cpu_id;
118 unsigned int flags;
119 #define CPU_IS_FIRST_THREAD_IN_CORE 0x2
120 #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
121 } *thread_delta, *thread_even, *thread_odd;
123 struct core_data {
124 unsigned long long c3;
125 unsigned long long c6;
126 unsigned long long c7;
127 unsigned int core_temp_c;
128 unsigned int core_id;
129 } *core_delta, *core_even, *core_odd;
131 struct pkg_data {
132 unsigned long long pc2;
133 unsigned long long pc3;
134 unsigned long long pc6;
135 unsigned long long pc7;
136 unsigned long long pc8;
137 unsigned long long pc9;
138 unsigned long long pc10;
139 unsigned int package_id;
140 unsigned int energy_pkg; /* MSR_PKG_ENERGY_STATUS */
141 unsigned int energy_dram; /* MSR_DRAM_ENERGY_STATUS */
142 unsigned int energy_cores; /* MSR_PP0_ENERGY_STATUS */
143 unsigned int energy_gfx; /* MSR_PP1_ENERGY_STATUS */
144 unsigned int rapl_pkg_perf_status; /* MSR_PKG_PERF_STATUS */
145 unsigned int rapl_dram_perf_status; /* MSR_DRAM_PERF_STATUS */
146 unsigned int tcc_activation_temp;
147 unsigned int pkg_temp_c;
148 } *package_delta, *package_even, *package_odd;
150 #define DELTA_COUNTERS thread_delta, core_delta, package_delta
151 #define ODD_COUNTERS thread_odd, core_odd, package_odd
152 #define EVEN_COUNTERS thread_even, core_even, package_even
153 static _Bool is_even = 1;
155 static _Bool allocated = 0;
156 static _Bool initialized = 0;
158 #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
159 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
160 topo.num_threads_per_core + \
161 (core_no) * topo.num_threads_per_core + (thread_no))
162 #define GET_CORE(core_base, core_no, pkg_no) \
163 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
164 #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
166 struct topo_params {
167 int num_packages;
168 int num_cpus;
169 int num_cores;
170 int max_cpu_num;
171 int num_cores_per_pkg;
172 int num_threads_per_core;
173 } topo;
175 struct timeval tv_even, tv_odd, tv_delta;
177 enum return_values {
178 OK = 0,
179 ERR_CPU_MIGRATE,
180 ERR_CPU_SAVE_SCHED_AFFINITY,
181 ERR_MSR_IA32_APERF,
182 ERR_MSR_IA32_MPERF,
183 ERR_MSR_SMI_COUNT,
184 ERR_MSR_CORE_C3_RESIDENCY,
185 ERR_MSR_CORE_C6_RESIDENCY,
186 ERR_MSR_CORE_C7_RESIDENCY,
187 ERR_MSR_IA32_THERM_STATUS,
188 ERR_MSR_PKG_C3_RESIDENCY,
189 ERR_MSR_PKG_C6_RESIDENCY,
190 ERR_MSR_PKG_C2_RESIDENCY,
191 ERR_MSR_PKG_C7_RESIDENCY,
192 ERR_MSR_PKG_C8_RESIDENCY,
193 ERR_MSR_PKG_C9_RESIDENCY,
194 ERR_MSR_PKG_C10_RESIDENCY,
195 ERR_MSR_PKG_ENERGY_STATUS,
196 ERR_MSR_PKG_POWER_INFO,
197 ERR_MSR_PP0_ENERGY_STATUS,
198 ERR_MSR_DRAM_ENERGY_STATUS,
199 ERR_MSR_PP1_ENERGY_STATUS,
200 ERR_MSR_PKG_PERF_STATUS,
201 ERR_MSR_DRAM_PERF_STATUS,
202 ERR_MSR_IA32_PACKAGE_THERM_STATUS,
203 ERR_MSR_IA32_TSC,
204 ERR_CPU_NOT_PRESENT,
205 ERR_NO_MSR,
206 ERR_CANT_OPEN_MSR,
207 ERR_CANT_OPEN_FILE,
208 ERR_CANT_READ_NUMBER,
209 ERR_CANT_READ_PROC_STAT,
210 ERR_NO_INVARIANT_TSC,
211 ERR_NO_APERF,
212 ERR_CALLOC,
213 ERR_CPU_ALLOC,
214 ERR_NOT_ROOT,
215 UNSUPPORTED_CPU,
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 open_msr(int cpu, _Bool multiple_read)
263 {
264 char pathname[32];
265 int fd;
267 /*
268 * If we need to do multiple read, let's migrate to the CPU
269 * Otherwise, we would lose time calling functions on another CPU
270 *
271 * If we are not yet initialized (cpu_affinity_setsize = 0),
272 * we need to skip this optimisation.
273 */
274 if (multiple_read && cpu_affinity_setsize) {
275 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
276 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
277 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1) {
278 ERROR("Could not migrate to CPU %d", cpu);
279 return -ERR_CPU_MIGRATE;
280 }
281 }
283 ssnprintf(pathname, sizeof(pathname), "/dev/cpu/%d/msr", cpu);
284 fd = open(pathname, O_RDONLY);
285 if (fd < 0)
286 return -ERR_CANT_OPEN_MSR;
287 return fd;
288 }
290 static int __attribute__((warn_unused_result))
291 read_msr(int fd, off_t offset, unsigned long long *msr)
292 {
293 ssize_t retval;
295 retval = pread(fd, msr, sizeof *msr, offset);
297 if (retval != sizeof *msr) {
298 ERROR("MSR offset 0x%llx read failed", (unsigned long long)offset);
299 return -1;
300 }
301 return 0;
302 }
304 static int __attribute__((warn_unused_result))
305 get_msr(int cpu, off_t offset, unsigned long long *msr)
306 {
307 ssize_t retval;
308 int fd;
310 fd = open_msr(cpu, 0);
311 if (fd < 0)
312 return fd;
313 retval = read_msr(fd, offset, msr);
314 close(fd);
315 return retval;
316 }
318 #define DELTA_WRAP32(delta, new, old) \
319 if (new > old) { \
320 delta = new - old; \
321 } else { \
322 delta = 0x100000000 + new - old; \
323 }
325 static void
326 delta_package(struct pkg_data *delta, const struct pkg_data *new, const struct pkg_data *old)
327 {
328 delta->pc2 = new->pc2 - old->pc2;
329 delta->pc3 = new->pc3 - old->pc3;
330 delta->pc6 = new->pc6 - old->pc6;
331 delta->pc7 = new->pc7 - old->pc7;
332 delta->pc8 = new->pc8 - old->pc8;
333 delta->pc9 = new->pc9 - old->pc9;
334 delta->pc10 = new->pc10 - old->pc10;
335 delta->pkg_temp_c = new->pkg_temp_c;
337 DELTA_WRAP32(delta->energy_pkg, new->energy_pkg, old->energy_pkg);
338 DELTA_WRAP32(delta->energy_cores, new->energy_cores, old->energy_cores);
339 DELTA_WRAP32(delta->energy_gfx, new->energy_gfx, old->energy_gfx);
340 DELTA_WRAP32(delta->energy_dram, new->energy_dram, old->energy_dram);
341 DELTA_WRAP32(delta->rapl_pkg_perf_status, new->rapl_pkg_perf_status, old->rapl_pkg_perf_status);
342 DELTA_WRAP32(delta->rapl_dram_perf_status, new->rapl_dram_perf_status, old->rapl_dram_perf_status);
343 }
345 static void
346 delta_core(struct core_data *delta, const struct core_data *new, const struct core_data *old)
347 {
348 delta->c3 = new->c3 - old->c3;
349 delta->c6 = new->c6 - old->c6;
350 delta->c7 = new->c7 - old->c7;
351 delta->core_temp_c = new->core_temp_c;
352 }
354 static int __attribute__((warn_unused_result))
355 delta_thread(struct thread_data *delta, const struct thread_data *new, const struct thread_data *old,
356 const struct core_data *core_delta)
357 {
358 delta->tsc = new->tsc - old->tsc;
360 /* check for TSC < 1 Mcycles over interval */
361 if (delta->tsc < (1000 * 1000)) {
362 WARNING("Insanely slow TSC rate, TSC stops in idle? ");
363 WARNING("You can disable all c-states by booting with \"idle=poll\" ");
364 WARNING("or just the deep ones with \"processor.max_cstate=1\"");
365 return -1;
366 }
368 delta->c1 = new->c1 - old->c1;
370 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
371 delta->aperf = new->aperf - old->aperf;
372 delta->mperf = new->mperf - old->mperf;
373 } else {
374 if (!aperf_mperf_unstable) {
375 WARNING(" APERF or MPERF went backwards * ");
376 WARNING("* Frequency results do not cover entire interval *");
377 WARNING("* fix this by running Linux-2.6.30 or later *");
379 aperf_mperf_unstable = 1;
380 }
381 }
383 /*
384 * As counter collection is not atomic,
385 * it is possible for mperf's non-halted cycles + idle states
386 * to exceed TSC's all cycles: show c1 = 0% in that case.
387 */
388 if ((delta->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > delta->tsc)
389 delta->c1 = 0;
390 else {
391 /* normal case, derive c1 */
392 delta->c1 = delta->tsc - delta->mperf - core_delta->c3
393 - core_delta->c6 - core_delta->c7;
394 }
396 if (delta->mperf == 0) {
397 WARNING("cpu%d MPERF 0!", old->cpu_id);
398 delta->mperf = 1; /* divide by 0 protection */
399 }
401 delta->smi_count = new->smi_count - old->smi_count;
403 return 0;
404 }
406 static int __attribute__((warn_unused_result))
407 delta_cpu(struct thread_data *t_delta, struct core_data *c_delta, struct pkg_data *p_delta,
408 const struct thread_data *t_new, const struct core_data *c_new, const struct pkg_data *p_new,
409 const struct thread_data *t_old, const struct core_data *c_old, const struct pkg_data *p_old)
410 {
411 int ret;
413 /* calculate core delta only for 1st thread in core */
414 if (t_new->flags & CPU_IS_FIRST_THREAD_IN_CORE)
415 delta_core(c_delta, c_new, c_old);
417 /* always calculate thread delta */
418 ret = delta_thread(t_delta, t_new, t_old, c_delta);
419 if (ret != 0)
420 return ret;
422 /* calculate package delta only for 1st core in package */
423 if (t_new->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
424 delta_package(p_delta, p_new, p_old);
426 return 0;
427 }
430 /*
431 * get_counters(...)
432 * migrate to cpu
433 * acquire and record local counters for that cpu
434 */
435 static int __attribute__((warn_unused_result))
436 get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
437 {
438 int cpu = t->cpu_id;
439 unsigned long long msr;
440 int msr_fd;
441 int retval = 0;
443 msr_fd = open_msr(cpu, 1);
444 if (msr_fd < 0)
445 return msr_fd;
447 #define READ_MSR(msr, dst) \
448 do { \
449 if (read_msr(msr_fd, msr, dst)) { \
450 retval = -ERR_##msr; \
451 goto out; \
452 } \
453 } while (0)
455 READ_MSR(MSR_IA32_TSC, &t->tsc);
457 READ_MSR(MSR_IA32_APERF, &t->aperf);
458 READ_MSR(MSR_IA32_MPERF, &t->mperf);
460 READ_MSR(MSR_SMI_COUNT, &msr);
461 t->smi_count = msr & 0xFFFFFFFF;
463 /* collect core counters only for 1st thread in core */
464 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) {
465 retval = 0;
466 goto out;
467 }
469 if (do_core_cstate & (1 << 3))
470 READ_MSR(MSR_CORE_C3_RESIDENCY, &c->c3);
471 if (do_core_cstate & (1 << 6))
472 READ_MSR(MSR_CORE_C6_RESIDENCY, &c->c6);
473 if (do_core_cstate & (1 << 7))
474 READ_MSR(MSR_CORE_C7_RESIDENCY, &c->c7);
476 if (do_dts) {
477 READ_MSR(MSR_IA32_THERM_STATUS, &msr);
478 c->core_temp_c = p->tcc_activation_temp - ((msr >> 16) & 0x7F);
479 }
481 /* collect package counters only for 1st core in package */
482 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) {
483 retval = 0;
484 goto out;
485 }
487 if (do_pkg_cstate & (1 << 2))
488 READ_MSR(MSR_PKG_C2_RESIDENCY, &p->pc2);
489 if (do_pkg_cstate & (1 << 3))
490 READ_MSR(MSR_PKG_C3_RESIDENCY, &p->pc3);
491 if (do_pkg_cstate & (1 << 6))
492 READ_MSR(MSR_PKG_C6_RESIDENCY, &p->pc6);
493 if (do_pkg_cstate & (1 << 7))
494 READ_MSR(MSR_PKG_C7_RESIDENCY, &p->pc7);
495 if (do_pkg_cstate & (1 << 8))
496 READ_MSR(MSR_PKG_C8_RESIDENCY, &p->pc8);
497 if (do_pkg_cstate & (1 << 9))
498 READ_MSR(MSR_PKG_C9_RESIDENCY, &p->pc9);
499 if (do_pkg_cstate & (1 << 10))
500 READ_MSR(MSR_PKG_C10_RESIDENCY, &p->pc10);
502 if (do_rapl & RAPL_PKG) {
503 READ_MSR(MSR_PKG_ENERGY_STATUS, &msr);
504 p->energy_pkg = msr & 0xFFFFFFFF;
505 }
506 if (do_rapl & RAPL_CORES) {
507 READ_MSR(MSR_PP0_ENERGY_STATUS, &msr);
508 p->energy_cores = msr & 0xFFFFFFFF;
509 }
510 if (do_rapl & RAPL_DRAM) {
511 READ_MSR(MSR_DRAM_ENERGY_STATUS, &msr);
512 p->energy_dram = msr & 0xFFFFFFFF;
513 }
514 if (do_rapl & RAPL_GFX) {
515 READ_MSR(MSR_PP1_ENERGY_STATUS, &msr);
516 p->energy_gfx = msr & 0xFFFFFFFF;
517 }
518 if (do_rapl & RAPL_PKG_PERF_STATUS) {
519 READ_MSR(MSR_PKG_PERF_STATUS, &msr);
520 p->rapl_pkg_perf_status = msr & 0xFFFFFFFF;
521 }
522 if (do_rapl & RAPL_DRAM_PERF_STATUS) {
523 READ_MSR(MSR_DRAM_PERF_STATUS, &msr);
524 p->rapl_dram_perf_status = msr & 0xFFFFFFFF;
525 }
526 if (do_ptm) {
527 READ_MSR(MSR_IA32_PACKAGE_THERM_STATUS, &msr);
528 p->pkg_temp_c = p->tcc_activation_temp - ((msr >> 16) & 0x7F);
529 }
531 out:
532 close(msr_fd);
533 return retval;
534 }
536 static void
537 free_all_buffers(void)
538 {
539 allocated = 0;
540 initialized = 0;
542 CPU_FREE(cpu_present_set);
543 cpu_present_set = NULL;
544 cpu_present_set = 0;
546 CPU_FREE(cpu_affinity_set);
547 cpu_affinity_set = NULL;
548 cpu_affinity_setsize = 0;
550 CPU_FREE(cpu_saved_affinity_set);
551 cpu_saved_affinity_set = NULL;
552 cpu_saved_affinity_setsize = 0;
554 free(thread_even);
555 free(core_even);
556 free(package_even);
558 thread_even = NULL;
559 core_even = NULL;
560 package_even = NULL;
562 free(thread_odd);
563 free(core_odd);
564 free(package_odd);
566 thread_odd = NULL;
567 core_odd = NULL;
568 package_odd = NULL;
570 free(thread_delta);
571 free(core_delta);
572 free(package_delta);
574 thread_delta = NULL;
575 core_delta = NULL;
576 package_delta = NULL;
577 }
579 /*
580 * Parse a file containing a single int.
581 */
582 static int __attribute__ ((format(printf,1,2)))
583 parse_int_file(const char *fmt, ...)
584 {
585 va_list args;
586 char path[PATH_MAX];
587 FILE *filep;
588 int value;
590 va_start(args, fmt);
591 vsnprintf(path, sizeof(path), fmt, args);
592 va_end(args);
593 filep = fopen(path, "r");
594 if (!filep) {
595 ERROR("%s: open failed", path);
596 return -ERR_CANT_OPEN_FILE;
597 }
598 if (fscanf(filep, "%d", &value) != 1) {
599 ERROR("%s: failed to parse number from file", path);
600 return -ERR_CANT_READ_NUMBER;
601 }
602 fclose(filep);
603 return value;
604 }
606 /*
607 * cpu_is_first_sibling_in_core(cpu)
608 * return 1 if given CPU is 1st HT sibling in the core
609 */
610 static int
611 cpu_is_first_sibling_in_core(int cpu)
612 {
613 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
614 }
616 /*
617 * cpu_is_first_core_in_package(cpu)
618 * return 1 if given CPU is 1st core in package
619 */
620 static int
621 cpu_is_first_core_in_package(int cpu)
622 {
623 return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
624 }
626 static int
627 get_physical_package_id(int cpu)
628 {
629 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
630 }
632 static int
633 get_core_id(int cpu)
634 {
635 return parse_int_file("/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
636 }
638 static int
639 get_num_ht_siblings(int cpu)
640 {
641 char path[80];
642 FILE *filep;
643 int sib1, sib2;
644 int matches;
645 char character;
647 ssnprintf(path, sizeof(path), "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
648 filep = fopen(path, "r");
649 if (!filep) {
650 ERROR("%s: open failed", path);
651 return -ERR_CANT_OPEN_FILE;
652 }
653 /*
654 * file format:
655 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
656 * otherwinse 1 sibling (self).
657 */
658 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
660 fclose(filep);
662 if (matches == 3)
663 return 2;
664 else
665 return 1;
666 }
668 static int __attribute__((warn_unused_result))
669 for_all_cpus_delta(const struct thread_data *thread_new_base, const struct core_data *core_new_base, const struct pkg_data *pkg_new_base,
670 const struct thread_data *thread_old_base, const struct core_data *core_old_base, const struct pkg_data *pkg_old_base)
671 {
672 int retval, pkg_no, core_no, thread_no;
674 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
675 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
676 for (thread_no = 0; thread_no <
677 topo.num_threads_per_core; ++thread_no) {
678 struct thread_data *t_delta;
679 const struct thread_data *t_old, *t_new;
680 struct core_data *c_delta;
681 const struct core_data *c_old, *c_new;
682 struct pkg_data *p_delta;
683 const struct pkg_data *p_old, *p_new;
685 t_delta = GET_THREAD(thread_delta, thread_no, core_no, pkg_no);
686 t_new = GET_THREAD(thread_new_base, thread_no, core_no, pkg_no);
687 t_old = GET_THREAD(thread_old_base, thread_no, core_no, pkg_no);
688 if (cpu_is_not_present(t_delta->cpu_id))
689 continue;
691 c_delta = GET_CORE(core_delta, core_no, pkg_no);
692 c_new = GET_CORE(core_new_base, core_no, pkg_no);
693 c_old = GET_CORE(core_old_base, core_no, pkg_no);
695 p_delta = GET_PKG(package_delta, pkg_no);
696 p_new = GET_PKG(pkg_new_base, pkg_no);
697 p_old = GET_PKG(pkg_old_base, pkg_no);
699 retval = delta_cpu(t_delta, c_delta, p_delta,
700 t_new, c_new, p_new,
701 t_old, c_old, p_old);
702 if (retval)
703 return retval;
704 }
705 }
706 }
707 return 0;
708 }
710 /*
711 * run func(cpu) on every cpu in /proc/stat
712 * return max_cpu number
713 */
714 static int __attribute__((warn_unused_result))
715 for_all_proc_cpus(int (func)(int))
716 {
717 FILE *fp;
718 int cpu_num;
719 int retval;
721 fp = fopen("/proc/stat", "r");
722 if (!fp) {
723 ERROR("Failed to open /proc/stat");
724 return -ERR_CANT_OPEN_FILE;
725 }
727 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
728 if (retval != 0) {
729 ERROR("Failed to parse /proc/stat");
730 return -ERR_CANT_READ_PROC_STAT;
731 }
733 while (1) {
734 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
735 if (retval != 1)
736 break;
738 retval = func(cpu_num);
739 if (retval) {
740 fclose(fp);
741 return(retval);
742 }
743 }
744 fclose(fp);
745 return 0;
746 }
748 /*
749 * count_cpus()
750 * remember the last one seen, it will be the max
751 */
752 static int
753 count_cpus(int cpu)
754 {
755 if (topo.max_cpu_num < cpu)
756 topo.max_cpu_num = cpu;
758 topo.num_cpus += 1;
759 return 0;
760 }
761 static int
762 mark_cpu_present(int cpu)
763 {
764 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
765 return 0;
766 }
769 static void
770 turbostat_submit (const char *plugin_instance,
771 const char *type, const char *type_instance,
772 gauge_t value)
773 {
774 value_list_t vl = VALUE_LIST_INIT;
775 value_t v;
777 v.gauge = value;
778 vl.values = &v;
779 vl.values_len = 1;
780 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
781 sstrncpy (vl.plugin, PLUGIN_NAME, sizeof (vl.plugin));
782 if (plugin_instance != NULL)
783 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
784 sstrncpy (vl.type, type, sizeof (vl.type));
785 if (type_instance != NULL)
786 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
788 plugin_dispatch_values (&vl);
789 }
791 /*
792 * column formatting convention & formats
793 * package: "pk" 2 columns %2d
794 * core: "cor" 3 columns %3d
795 * CPU: "CPU" 3 columns %3d
796 * Pkg_W: %6.2
797 * Cor_W: %6.2
798 * GFX_W: %5.2
799 * RAM_W: %5.2
800 * GHz: "GHz" 3 columns %3.2
801 * TSC: "TSC" 3 columns %3.2
802 * SMI: "SMI" 4 columns %4d
803 * percentage " %pc3" %6.2
804 * Perf Status percentage: %5.2
805 * "CTMP" 4 columns %4d
806 */
807 static int
808 submit_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
809 {
810 char name[12];
811 double interval_float;
813 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
815 ssnprintf(name, sizeof(name), "cpu%02d", t->cpu_id);
817 if (!aperf_mperf_unstable)
818 turbostat_submit(name, "percent", "c0", 100.0 * t->mperf/t->tsc);
819 if (!aperf_mperf_unstable)
820 turbostat_submit(name, "percent", "c1", 100.0 * t->c1/t->tsc);
822 /* GHz */
823 if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
824 turbostat_submit(NULL, "frequency", name, 1.0 * t->tsc / 1000000000 * t->aperf / t->mperf / interval_float);
826 /* SMI */
827 turbostat_submit(NULL, "current", name, t->smi_count);
829 /* print per-core data only for 1st thread in core */
830 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
831 goto done;
833 ssnprintf(name, sizeof(name), "core%02d", c->core_id);
835 if (do_core_cstate & (1 << 3))
836 turbostat_submit(name, "percent", "c3", 100.0 * c->c3/t->tsc);
837 if (do_core_cstate & (1 << 6))
838 turbostat_submit(name, "percent", "c6", 100.0 * c->c6/t->tsc);
839 if (do_core_cstate & (1 << 7))
840 turbostat_submit(name, "percent", "c7", 100.0 * c->c7/t->tsc);
842 if (do_dts)
843 turbostat_submit(NULL, "temperature", name, c->core_temp_c);
845 /* print per-package data only for 1st core in package */
846 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
847 goto done;
849 ssnprintf(name, sizeof(name), "pkg%02d", p->package_id);
851 if (do_ptm)
852 turbostat_submit(NULL, "temperature", name, p->pkg_temp_c);
854 if (do_pkg_cstate & (1 << 2))
855 turbostat_submit(name, "percent", "pc2", 100.0 * p->pc2/t->tsc);
856 if (do_pkg_cstate & (1 << 3))
857 turbostat_submit(name, "percent", "pc3", 100.0 * p->pc3/t->tsc);
858 if (do_pkg_cstate & (1 << 6))
859 turbostat_submit(name, "percent", "pc6", 100.0 * p->pc6/t->tsc);
860 if (do_pkg_cstate & (1 << 7))
861 turbostat_submit(name, "percent", "pc7", 100.0 * p->pc7/t->tsc);
862 if (do_pkg_cstate & (1 << 8))
863 turbostat_submit(name, "percent", "pc8", 100.0 * p->pc8/t->tsc);
864 if (do_pkg_cstate & (1 << 9))
865 turbostat_submit(name, "percent", "pc9", 100.0 * p->pc9/t->tsc);
866 if (do_pkg_cstate & (1 << 10))
867 turbostat_submit(name, "percent", "pc10", 100.0 * p->pc10/t->tsc);
869 if (do_rapl) {
870 if (do_rapl & RAPL_PKG)
871 turbostat_submit(name, "power", "Pkg_W", p->energy_pkg * rapl_energy_units / interval_float);
872 if (do_rapl & RAPL_CORES)
873 turbostat_submit(name, "power", "Cor_W", p->energy_cores * rapl_energy_units / interval_float);
874 if (do_rapl & RAPL_GFX)
875 turbostat_submit(name, "power", "GFX_W", p->energy_gfx * rapl_energy_units / interval_float);
876 if (do_rapl & RAPL_DRAM)
877 turbostat_submit(name, "power", "RAM_W", p->energy_dram * rapl_energy_units / interval_float);
878 }
879 done:
880 return 0;
881 }
883 static int
884 turbostat_read(user_data_t * not_used)
885 {
886 int ret;
888 if (!allocated) {
889 if ((ret = setup_all_buffers()) < 0)
890 return ret;
891 }
893 if (for_all_proc_cpus(cpu_is_not_present)) {
894 free_all_buffers();
895 if ((ret = setup_all_buffers()) < 0)
896 return ret;
897 if (for_all_proc_cpus(cpu_is_not_present))
898 return -ERR_CPU_NOT_PRESENT;
899 }
901 /* Saving the scheduling affinity, as it will be modified by get_counters */
902 if (sched_getaffinity(0, cpu_saved_affinity_setsize, cpu_saved_affinity_set) != 0)
903 return -ERR_CPU_SAVE_SCHED_AFFINITY;
905 if (!initialized) {
906 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
907 goto out;
908 gettimeofday(&tv_even, (struct timezone *)NULL);
909 is_even = 1;
910 initialized = 1;
911 ret = 0;
912 goto out;
913 }
915 if (is_even) {
916 if ((ret = for_all_cpus(get_counters, ODD_COUNTERS)) < 0)
917 goto out;
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_delta(ODD_COUNTERS, EVEN_COUNTERS)) < 0)
922 goto out;
923 if ((ret = for_all_cpus(submit_counters, DELTA_COUNTERS)) < 0)
924 goto out;
925 } else {
926 if ((ret = for_all_cpus(get_counters, EVEN_COUNTERS)) < 0)
927 goto out;
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_delta(EVEN_COUNTERS, ODD_COUNTERS)) < 0)
932 goto out;
933 if ((ret = for_all_cpus(submit_counters, DELTA_COUNTERS)) < 0)
934 goto out;
935 }
936 ret = 0;
937 out:
938 /*
939 * Let's restore the affinity
940 * This might fail if the number of CPU changed, but we can't do anything in that case..
941 */
942 (void)sched_setaffinity(0, cpu_saved_affinity_setsize, cpu_saved_affinity_set);
943 return ret;
944 }
946 static int __attribute__((warn_unused_result))
947 check_dev_msr()
948 {
949 struct stat sb;
951 if (stat("/dev/cpu/0/msr", &sb)) {
952 ERROR("no /dev/cpu/0/msr, try \"# modprobe msr\"");
953 return -ERR_NO_MSR;
954 }
955 return 0;
956 }
958 static int __attribute__((warn_unused_result))
959 check_super_user()
960 {
961 if (getuid() != 0) {
962 ERROR("must be root");
963 return -ERR_NOT_ROOT;
964 }
965 return 0;
966 }
968 /*
969 * MSR_IA32_TEMPERATURE_TARGET indicates the temperature where
970 * the Thermal Control Circuit (TCC) activates.
971 * This is usually equal to tjMax.
972 *
973 * Older processors do not have this MSR, so there we guess,
974 * but also allow cmdline over-ride with -T.
975 *
976 * Several MSR temperature values are in units of degrees-C
977 * below this value, including the Digital Thermal Sensor (DTS),
978 * Package Thermal Management Sensor (PTM), and thermal event thresholds.
979 */
980 static int __attribute__((warn_unused_result))
981 set_temperature_target(struct thread_data *t, struct core_data *c, struct pkg_data *p)
982 {
983 unsigned long long msr;
984 unsigned int target_c_local;
986 /* tcc_activation_temp is used only for dts or ptm */
987 if (!(do_dts || do_ptm))
988 return 0;
990 /* this is a per-package concept */
991 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
992 return 0;
994 if (tcc_activation_temp != 0) {
995 p->tcc_activation_temp = tcc_activation_temp;
996 return 0;
997 }
999 if (get_msr(t->cpu_id, MSR_IA32_TEMPERATURE_TARGET, &msr))
1000 goto guess;
1002 target_c_local = (msr >> 16) & 0x7F;
1004 if (target_c_local < 85 || target_c_local > 127)
1005 goto guess;
1007 p->tcc_activation_temp = target_c_local;
1009 return 0;
1011 guess:
1012 p->tcc_activation_temp = TJMAX_DEFAULT;
1013 WARNING("cpu%d: Guessing tjMax %d C, Please use TCCActivationTemp to specify",
1014 t->cpu_id, p->tcc_activation_temp);
1016 return 0;
1017 }
1019 /*
1020 * Identify the functionality of the CPU
1021 */
1022 static int __attribute__((warn_unused_result))
1023 probe_cpu()
1024 {
1025 unsigned int eax, ebx, ecx, edx, max_level;
1026 unsigned int fms, family, model;
1028 /* CPUID(0):
1029 * - EAX: Maximum Input Value for Basic CPUID Information
1030 * - EBX: "Genu" (0x756e6547)
1031 * - EDX: "ineI" (0x49656e69)
1032 * - ECX: "ntel" (0x6c65746e)
1033 */
1034 max_level = ebx = ecx = edx = 0;
1035 __get_cpuid(0, &max_level, &ebx, &ecx, &edx);
1036 if (ebx != 0x756e6547 && edx != 0x49656e69 && ecx != 0x6c65746e) {
1037 ERROR("Unsupported CPU");
1038 return -UNSUPPORTED_CPU;
1039 }
1041 /* CPUID(1):
1042 * - EAX: Version Information: Type, Family, Model, and Stepping ID
1043 * + 4-7: Model ID
1044 * + 8-11: Family ID
1045 * + 12-13: Processor type
1046 * + 16-19: Extended Model ID
1047 * + 20-27: Extended Family ID
1048 * - EDX: Feature Information:
1049 * + 5: Support for MSR read/write operations
1050 */
1051 fms = ebx = ecx = edx = 0;
1052 __get_cpuid(1, &fms, &ebx, &ecx, &edx);
1053 family = (fms >> 8) & 0xf;
1054 model = (fms >> 4) & 0xf;
1055 if (family == 0xf)
1056 family += (fms >> 20) & 0xf;
1057 if (family == 6 || family == 0xf)
1058 model += ((fms >> 16) & 0xf) << 4;
1059 if (!(edx & (1 << 5))) {
1060 ERROR("CPUID: no MSR");
1061 return -ERR_NO_MSR;
1062 }
1064 /*
1065 * CPUID(0x80000000):
1066 * - EAX: Maximum Input Value for Extended Function CPUID Information
1067 *
1068 * This allows us to verify if the CPUID(0x80000007) can be called
1069 *
1070 * This check is valid for both Intel and AMD.
1071 */
1072 max_level = ebx = ecx = edx = 0;
1073 __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
1074 if (max_level < 0x80000007) {
1075 ERROR("CPUID: no invariant TSC (max_level 0x%x)", max_level);
1076 return -ERR_NO_INVARIANT_TSC;
1077 }
1079 /*
1080 * CPUID(0x80000007):
1081 * - EDX:
1082 * + 8: Invariant TSC available if set
1083 *
1084 * This check is valid for both Intel and AMD
1085 */
1086 __get_cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
1087 if (!(edx & (1 << 8))) {
1088 ERROR("No invariant TSC");
1089 return -ERR_NO_INVARIANT_TSC;
1090 }
1092 /*
1093 * CPUID(6):
1094 * - EAX:
1095 * + 0: Digital temperature sensor is supported if set
1096 * + 6: Package thermal management is supported if set
1097 * - ECX:
1098 * + 0: Hardware Coordination Feedback Capability (Presence of IA32_MPERF and IA32_APERF).
1099 * + 3: The processor supports performance-energy bias preference if set.
1100 * It also implies the presence of a new architectural MSR called IA32_ENERGY_PERF_BIAS
1101 *
1102 * This check is valid for both Intel and AMD
1103 */
1104 __get_cpuid(0x6, &eax, &ebx, &ecx, &edx);
1105 do_dts = eax & (1 << 0);
1106 do_ptm = eax & (1 << 6);
1107 if (!(ecx & (1 << 0))) {
1108 ERROR("No APERF");
1109 return -ERR_NO_APERF;
1110 }
1112 /*
1113 * Enable or disable C states depending on the model and family
1114 */
1115 if (family == 6) {
1116 switch (model) {
1117 /* Atom (partial) */
1118 case 0x27:
1119 do_core_cstate = 0;
1120 do_pkg_cstate = (1 << 2) | (1 << 4) | (1 << 6);
1121 break;
1122 /* Silvermont */
1123 case 0x37: /* BYT */
1124 case 0x4A:
1125 case 0x4D: /* AVN */
1126 case 0x5A:
1127 case 0x5D:
1128 do_core_cstate = (1 << 1) | (1 << 6);
1129 do_pkg_cstate = (1 << 6);
1130 break;
1131 /* Nehalem */
1132 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1133 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1134 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1135 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1136 do_core_cstate = (1 << 3) | (1 << 6);
1137 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1138 break;
1139 /* Westmere */
1140 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1141 case 0x2C: /* Westmere EP - Gulftown */
1142 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1143 do_core_cstate = (1 << 3) | (1 << 6);
1144 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1145 break;
1146 /* Sandy Bridge */
1147 case 0x2A: /* SNB */
1148 case 0x2D: /* SNB Xeon */
1149 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1150 do_pkg_cstate = (1 << 2) | (1 << 3) | (1 << 6) | (1 << 7);
1151 break;
1152 /* Ivy Bridge */
1153 case 0x3A: /* IVB */
1154 case 0x3E: /* IVB Xeon */
1155 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1156 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1157 break;
1158 /* Haswell Bridge */
1159 case 0x3C: /* HSW */
1160 case 0x3F: /* HSW */
1161 case 0x46: /* HSW */
1162 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1163 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1164 break;
1165 case 0x45: /* HSW */
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 /* Broadwel */
1170 case 0x4F: /* BDW */
1171 case 0x56: /* BDX-DE */
1172 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1173 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1174 break;
1175 case 0x3D: /* BDW */
1176 do_core_cstate = (1 << 3) | (1 << 6) | (1 << 7);
1177 do_pkg_cstate = (1 << 3) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 9) | (1 << 10);
1178 break;
1179 default:
1180 ERROR("Unsupported CPU");
1181 }
1182 switch (model) {
1183 case 0x2A:
1184 case 0x3A:
1185 case 0x3C:
1186 case 0x45:
1187 case 0x46:
1188 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_GFX;
1189 break;
1190 case 0x3F:
1191 do_rapl = RAPL_PKG | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1192 break;
1193 case 0x2D:
1194 case 0x3E:
1195 do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_PKG_POWER_INFO | RAPL_PKG_PERF_STATUS | RAPL_DRAM | RAPL_DRAM_PERF_STATUS;
1196 break;
1197 case 0x37:
1198 case 0x4D:
1199 do_rapl = RAPL_PKG | RAPL_CORES;
1200 break;
1201 default:
1202 do_rapl = 0;
1203 }
1204 } else {
1205 ERROR("Unsupported CPU");
1206 return -UNSUPPORTED_CPU;
1207 }
1209 if (do_rapl) {
1210 unsigned long msr;
1211 if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
1212 return 0;
1214 if (model == 0x37)
1215 rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
1216 else
1217 rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
1218 }
1220 return 0;
1221 }
1225 static int __attribute__((warn_unused_result))
1226 topology_probe()
1227 {
1228 int i;
1229 int ret;
1230 int max_core_id = 0;
1231 int max_package_id = 0;
1232 int max_siblings = 0;
1233 struct cpu_topology {
1234 int core_id;
1235 int physical_package_id;
1236 } *cpus;
1238 /* Initialize num_cpus, max_cpu_num */
1239 topo.num_cpus = 0;
1240 topo.max_cpu_num = 0;
1241 ret = for_all_proc_cpus(count_cpus);
1242 if (ret < 0)
1243 return ret;
1245 DEBUG("num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1247 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1248 if (cpus == NULL) {
1249 ERROR("calloc cpus");
1250 return -ERR_CALLOC;
1251 }
1253 /*
1254 * Allocate and initialize cpu_present_set
1255 */
1256 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1257 if (cpu_present_set == NULL) {
1258 free(cpus);
1259 ERROR("CPU_ALLOC");
1260 return -ERR_CPU_ALLOC;
1261 }
1262 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1263 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1264 ret = for_all_proc_cpus(mark_cpu_present);
1265 if (ret < 0) {
1266 free(cpus);
1267 return ret;
1268 }
1270 /*
1271 * Allocate and initialize cpu_affinity_set
1272 */
1273 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1274 if (cpu_affinity_set == NULL) {
1275 free(cpus);
1276 ERROR("CPU_ALLOC");
1277 return -ERR_CPU_ALLOC;
1278 }
1279 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1280 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1283 /*
1284 * Allocate and initialize cpu_saved_affinity_set
1285 */
1286 cpu_saved_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1287 if (cpu_saved_affinity_set == NULL) {
1288 free(cpus);
1289 ERROR("CPU_ALLOC");
1290 return -ERR_CPU_ALLOC;
1291 }
1292 cpu_saved_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1293 CPU_ZERO_S(cpu_saved_affinity_setsize, cpu_saved_affinity_set);
1296 /*
1297 * For online cpus
1298 * find max_core_id, max_package_id
1299 */
1300 for (i = 0; i <= topo.max_cpu_num; ++i) {
1301 int siblings;
1303 if (cpu_is_not_present(i)) {
1304 WARNING("cpu%d NOT PRESENT", i);
1305 continue;
1306 }
1307 cpus[i].core_id = get_core_id(i);
1308 if (cpus[i].core_id < 0)
1309 return cpus[i].core_id;
1310 if (cpus[i].core_id > max_core_id)
1311 max_core_id = cpus[i].core_id;
1313 cpus[i].physical_package_id = get_physical_package_id(i);
1314 if (cpus[i].physical_package_id < 0)
1315 return cpus[i].physical_package_id;
1316 if (cpus[i].physical_package_id > max_package_id)
1317 max_package_id = cpus[i].physical_package_id;
1319 siblings = get_num_ht_siblings(i);
1320 if (siblings < 0)
1321 return siblings;
1322 if (siblings > max_siblings)
1323 max_siblings = siblings;
1324 DEBUG("cpu %d pkg %d core %d\n",
1325 i, cpus[i].physical_package_id, cpus[i].core_id);
1326 }
1327 topo.num_cores_per_pkg = max_core_id + 1;
1328 DEBUG("max_core_id %d, sizing for %d cores per package\n",
1329 max_core_id, topo.num_cores_per_pkg);
1331 topo.num_packages = max_package_id + 1;
1332 DEBUG("max_package_id %d, sizing for %d packages\n",
1333 max_package_id, topo.num_packages);
1335 topo.num_threads_per_core = max_siblings;
1336 DEBUG("max_siblings %d\n", max_siblings);
1338 free(cpus);
1339 return 0;
1340 }
1342 static int
1343 allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1344 {
1345 int i;
1347 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1348 topo.num_packages, sizeof(struct thread_data));
1349 if (*t == NULL)
1350 goto error;
1352 for (i = 0; i < topo.num_threads_per_core *
1353 topo.num_cores_per_pkg * topo.num_packages; i++)
1354 (*t)[i].cpu_id = -1;
1356 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1357 sizeof(struct core_data));
1358 if (*c == NULL)
1359 goto error;
1361 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1362 (*c)[i].core_id = -1;
1364 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1365 if (*p == NULL)
1366 goto error;
1368 for (i = 0; i < topo.num_packages; i++)
1369 (*p)[i].package_id = i;
1371 return 0;
1372 error:
1373 ERROR("calloc counters");
1374 return -ERR_CALLOC;
1375 }
1376 /*
1377 * init_counter()
1378 *
1379 * set cpu_id, core_num, pkg_num
1380 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1381 *
1382 * increment topo.num_cores when 1st core in pkg seen
1383 */
1384 static int
1385 init_counter(struct thread_data *thread_base, struct core_data *core_base,
1386 struct pkg_data *pkg_base, int thread_num, int core_num,
1387 int pkg_num, int cpu_id)
1388 {
1389 int ret;
1390 struct thread_data *t;
1391 struct core_data *c;
1392 struct pkg_data *p;
1394 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1395 c = GET_CORE(core_base, core_num, pkg_num);
1396 p = GET_PKG(pkg_base, pkg_num);
1398 t->cpu_id = cpu_id;
1399 if (thread_num == 0) {
1400 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1401 if ((ret = cpu_is_first_core_in_package(cpu_id)) < 0) {
1402 return ret;
1403 } else if (ret != 0) {
1404 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1405 }
1406 }
1408 c->core_id = core_num;
1409 p->package_id = pkg_num;
1411 return 0;
1412 }
1415 static int
1416 initialize_counters(int cpu_id)
1417 {
1418 int my_thread_id, my_core_id, my_package_id;
1419 int ret;
1421 my_package_id = get_physical_package_id(cpu_id);
1422 if (my_package_id < 0)
1423 return my_package_id;
1424 my_core_id = get_core_id(cpu_id);
1425 if (my_core_id < 0)
1426 return my_core_id;
1428 if ((ret = cpu_is_first_sibling_in_core(cpu_id)) < 0) {
1429 return ret;
1430 } else if (ret != 0) {
1431 my_thread_id = 0;
1432 topo.num_cores++;
1433 } else {
1434 my_thread_id = 1;
1435 }
1437 ret = init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1438 if (ret < 0)
1439 return ret;
1440 ret = init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1441 if (ret < 0)
1442 return ret;
1443 ret = init_counter(DELTA_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1444 if (ret < 0)
1445 return ret;
1446 return 0;
1447 }
1449 #define DO_OR_GOTO_ERR(something) \
1450 do { \
1451 ret = (something); \
1452 if (ret < 0) \
1453 goto err; \
1454 } while (0)
1456 static int setup_all_buffers(void)
1457 {
1458 int ret;
1460 DO_OR_GOTO_ERR(topology_probe());
1461 DO_OR_GOTO_ERR(allocate_counters(&thread_even, &core_even, &package_even));
1462 DO_OR_GOTO_ERR(allocate_counters(&thread_odd, &core_odd, &package_odd));
1463 DO_OR_GOTO_ERR(allocate_counters(&thread_delta, &core_delta, &package_delta));
1464 DO_OR_GOTO_ERR(for_all_proc_cpus(initialize_counters));
1466 allocated = 1;
1467 return 0;
1468 err:
1469 free_all_buffers();
1470 return ret;
1471 }
1473 static int
1474 turbostat_init(void)
1475 {
1476 int ret;
1478 DO_OR_GOTO_ERR(check_super_user());
1479 DO_OR_GOTO_ERR(probe_cpu());
1480 DO_OR_GOTO_ERR(check_dev_msr());
1481 DO_OR_GOTO_ERR(setup_all_buffers());
1482 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, EVEN_COUNTERS));
1483 DO_OR_GOTO_ERR(for_all_cpus(set_temperature_target, ODD_COUNTERS));
1485 plugin_register_complex_read(NULL, PLUGIN_NAME, turbostat_read, NULL, NULL);
1487 return 0;
1488 err:
1489 free_all_buffers();
1490 return ret;
1491 }
1493 static const char *config_keys[] =
1494 {
1495 "TCCActivationTemp",
1496 };
1497 static const int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
1499 static int
1500 turbostat_config(const char *key, const char *value)
1501 {
1502 long unsigned int tmp_val;
1503 char *end;
1505 if (strcasecmp("TCCActivationTemp", key) == 0) {
1506 tmp_val = strtoul(value, &end, 0);
1507 if (*end != '\0' || tmp_val > UINT_MAX)
1508 return -1;
1509 tcc_activation_temp = (unsigned int) tmp_val;
1510 } else {
1511 return -1;
1512 }
1513 return 0;
1514 }
1516 void module_register(void);
1517 void module_register(void)
1518 {
1519 plugin_register_init(PLUGIN_NAME, turbostat_init);
1520 plugin_register_config(PLUGIN_NAME, turbostat_config, config_keys, config_keys_num);
1521 }