Commit | Line | Data |
---|---|---|
103a8fea LB |
1 | /* |
2 | * turbostat -- show CPU frequency and C-state residency | |
3 | * on modern Intel turbo-capable processors. | |
4 | * | |
e23da037 | 5 | * Copyright (c) 2012 Intel Corporation. |
103a8fea LB |
6 | * Len Brown <len.brown@intel.com> |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
20 | */ | |
21 | ||
88c3281f | 22 | #define _GNU_SOURCE |
103a8fea LB |
23 | #include <stdio.h> |
24 | #include <unistd.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/wait.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/resource.h> | |
29 | #include <fcntl.h> | |
30 | #include <signal.h> | |
31 | #include <sys/time.h> | |
32 | #include <stdlib.h> | |
33 | #include <dirent.h> | |
34 | #include <string.h> | |
35 | #include <ctype.h> | |
88c3281f | 36 | #include <sched.h> |
103a8fea | 37 | |
103a8fea LB |
38 | #define MSR_NEHALEM_PLATFORM_INFO 0xCE |
39 | #define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1AD | |
6574a5d5 | 40 | #define MSR_IVT_TURBO_RATIO_LIMIT 0x1AE |
103a8fea LB |
41 | #define MSR_APERF 0xE8 |
42 | #define MSR_MPERF 0xE7 | |
43 | #define MSR_PKG_C2_RESIDENCY 0x60D /* SNB only */ | |
44 | #define MSR_PKG_C3_RESIDENCY 0x3F8 | |
45 | #define MSR_PKG_C6_RESIDENCY 0x3F9 | |
46 | #define MSR_PKG_C7_RESIDENCY 0x3FA /* SNB only */ | |
47 | #define MSR_CORE_C3_RESIDENCY 0x3FC | |
48 | #define MSR_CORE_C6_RESIDENCY 0x3FD | |
49 | #define MSR_CORE_C7_RESIDENCY 0x3FE /* SNB only */ | |
50 | ||
51 | char *proc_stat = "/proc/stat"; | |
52 | unsigned int interval_sec = 5; /* set with -i interval_sec */ | |
53 | unsigned int verbose; /* set with -v */ | |
e23da037 | 54 | unsigned int summary_only; /* set with -s */ |
103a8fea LB |
55 | unsigned int skip_c0; |
56 | unsigned int skip_c1; | |
57 | unsigned int do_nhm_cstates; | |
58 | unsigned int do_snb_cstates; | |
59 | unsigned int has_aperf; | |
60 | unsigned int units = 1000000000; /* Ghz etc */ | |
61 | unsigned int genuine_intel; | |
62 | unsigned int has_invariant_tsc; | |
63 | unsigned int do_nehalem_platform_info; | |
64 | unsigned int do_nehalem_turbo_ratio_limit; | |
6574a5d5 | 65 | unsigned int do_ivt_turbo_ratio_limit; |
2f32edf1 LB |
66 | unsigned int extra_msr_offset32; |
67 | unsigned int extra_msr_offset64; | |
8e180f3c LB |
68 | unsigned int extra_delta_offset32; |
69 | unsigned int extra_delta_offset64; | |
103a8fea LB |
70 | double bclk; |
71 | unsigned int show_pkg; | |
72 | unsigned int show_core; | |
73 | unsigned int show_cpu; | |
c98d5d94 LB |
74 | unsigned int show_pkg_only; |
75 | unsigned int show_core_only; | |
76 | char *output_buffer, *outp; | |
103a8fea LB |
77 | |
78 | int aperf_mperf_unstable; | |
79 | int backwards_count; | |
80 | char *progname; | |
103a8fea | 81 | |
c98d5d94 LB |
82 | cpu_set_t *cpu_present_set, *cpu_affinity_set; |
83 | size_t cpu_present_setsize, cpu_affinity_setsize; | |
84 | ||
85 | struct thread_data { | |
86 | unsigned long long tsc; | |
87 | unsigned long long aperf; | |
88 | unsigned long long mperf; | |
89 | unsigned long long c1; /* derived */ | |
2f32edf1 | 90 | unsigned long long extra_msr64; |
8e180f3c LB |
91 | unsigned long long extra_delta64; |
92 | unsigned long long extra_msr32; | |
93 | unsigned long long extra_delta32; | |
c98d5d94 LB |
94 | unsigned int cpu_id; |
95 | unsigned int flags; | |
96 | #define CPU_IS_FIRST_THREAD_IN_CORE 0x2 | |
97 | #define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4 | |
98 | } *thread_even, *thread_odd; | |
99 | ||
100 | struct core_data { | |
101 | unsigned long long c3; | |
102 | unsigned long long c6; | |
103 | unsigned long long c7; | |
104 | unsigned int core_id; | |
105 | } *core_even, *core_odd; | |
106 | ||
107 | struct pkg_data { | |
108 | unsigned long long pc2; | |
109 | unsigned long long pc3; | |
110 | unsigned long long pc6; | |
111 | unsigned long long pc7; | |
112 | unsigned int package_id; | |
113 | } *package_even, *package_odd; | |
114 | ||
115 | #define ODD_COUNTERS thread_odd, core_odd, package_odd | |
116 | #define EVEN_COUNTERS thread_even, core_even, package_even | |
117 | ||
118 | #define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \ | |
119 | (thread_base + (pkg_no) * topo.num_cores_per_pkg * \ | |
120 | topo.num_threads_per_core + \ | |
121 | (core_no) * topo.num_threads_per_core + (thread_no)) | |
122 | #define GET_CORE(core_base, core_no, pkg_no) \ | |
123 | (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no)) | |
124 | #define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no) | |
125 | ||
126 | struct system_summary { | |
127 | struct thread_data threads; | |
128 | struct core_data cores; | |
129 | struct pkg_data packages; | |
130 | } sum, average; | |
131 | ||
132 | ||
133 | struct topo_params { | |
134 | int num_packages; | |
135 | int num_cpus; | |
136 | int num_cores; | |
137 | int max_cpu_num; | |
138 | int num_cores_per_pkg; | |
139 | int num_threads_per_core; | |
140 | } topo; | |
141 | ||
142 | struct timeval tv_even, tv_odd, tv_delta; | |
143 | ||
144 | void setup_all_buffers(void); | |
145 | ||
146 | int cpu_is_not_present(int cpu) | |
d15cf7c1 | 147 | { |
c98d5d94 | 148 | return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set); |
d15cf7c1 | 149 | } |
88c3281f | 150 | /* |
c98d5d94 LB |
151 | * run func(thread, core, package) in topology order |
152 | * skip non-present cpus | |
88c3281f | 153 | */ |
c98d5d94 LB |
154 | |
155 | int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *), | |
156 | struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base) | |
88c3281f | 157 | { |
c98d5d94 | 158 | int retval, pkg_no, core_no, thread_no; |
d15cf7c1 | 159 | |
c98d5d94 LB |
160 | for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) { |
161 | for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) { | |
162 | for (thread_no = 0; thread_no < | |
163 | topo.num_threads_per_core; ++thread_no) { | |
164 | struct thread_data *t; | |
165 | struct core_data *c; | |
166 | struct pkg_data *p; | |
88c3281f | 167 | |
c98d5d94 LB |
168 | t = GET_THREAD(thread_base, thread_no, core_no, pkg_no); |
169 | ||
170 | if (cpu_is_not_present(t->cpu_id)) | |
171 | continue; | |
172 | ||
173 | c = GET_CORE(core_base, core_no, pkg_no); | |
174 | p = GET_PKG(pkg_base, pkg_no); | |
175 | ||
176 | retval = func(t, c, p); | |
177 | if (retval) | |
178 | return retval; | |
179 | } | |
180 | } | |
181 | } | |
182 | return 0; | |
88c3281f LB |
183 | } |
184 | ||
185 | int cpu_migrate(int cpu) | |
186 | { | |
c98d5d94 LB |
187 | CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set); |
188 | CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set); | |
189 | if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1) | |
88c3281f LB |
190 | return -1; |
191 | else | |
192 | return 0; | |
193 | } | |
194 | ||
15aaa346 | 195 | int get_msr(int cpu, off_t offset, unsigned long long *msr) |
103a8fea LB |
196 | { |
197 | ssize_t retval; | |
103a8fea LB |
198 | char pathname[32]; |
199 | int fd; | |
200 | ||
201 | sprintf(pathname, "/dev/cpu/%d/msr", cpu); | |
202 | fd = open(pathname, O_RDONLY); | |
15aaa346 LB |
203 | if (fd < 0) |
204 | return -1; | |
103a8fea | 205 | |
15aaa346 | 206 | retval = pread(fd, msr, sizeof *msr, offset); |
103a8fea | 207 | close(fd); |
15aaa346 LB |
208 | |
209 | if (retval != sizeof *msr) | |
210 | return -1; | |
211 | ||
212 | return 0; | |
103a8fea LB |
213 | } |
214 | ||
a829eb4d | 215 | void print_header(void) |
103a8fea LB |
216 | { |
217 | if (show_pkg) | |
c98d5d94 | 218 | outp += sprintf(outp, "pk"); |
e23da037 | 219 | if (show_pkg) |
c98d5d94 | 220 | outp += sprintf(outp, " "); |
103a8fea | 221 | if (show_core) |
c98d5d94 | 222 | outp += sprintf(outp, "cor"); |
103a8fea | 223 | if (show_cpu) |
c98d5d94 | 224 | outp += sprintf(outp, " CPU"); |
e23da037 | 225 | if (show_pkg || show_core || show_cpu) |
c98d5d94 | 226 | outp += sprintf(outp, " "); |
103a8fea | 227 | if (do_nhm_cstates) |
c98d5d94 | 228 | outp += sprintf(outp, " %%c0"); |
103a8fea | 229 | if (has_aperf) |
c98d5d94 LB |
230 | outp += sprintf(outp, " GHz"); |
231 | outp += sprintf(outp, " TSC"); | |
8e180f3c LB |
232 | if (extra_delta_offset32) |
233 | outp += sprintf(outp, " delta 0x%03X", extra_delta_offset32); | |
234 | if (extra_delta_offset64) | |
235 | outp += sprintf(outp, " DELTA 0x%03X", extra_delta_offset64); | |
2f32edf1 | 236 | if (extra_msr_offset32) |
8e180f3c | 237 | outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset32); |
2f32edf1 | 238 | if (extra_msr_offset64) |
8e180f3c | 239 | outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset64); |
103a8fea | 240 | if (do_nhm_cstates) |
c98d5d94 | 241 | outp += sprintf(outp, " %%c1"); |
103a8fea | 242 | if (do_nhm_cstates) |
c98d5d94 | 243 | outp += sprintf(outp, " %%c3"); |
103a8fea | 244 | if (do_nhm_cstates) |
c98d5d94 | 245 | outp += sprintf(outp, " %%c6"); |
103a8fea | 246 | if (do_snb_cstates) |
c98d5d94 | 247 | outp += sprintf(outp, " %%c7"); |
103a8fea | 248 | if (do_snb_cstates) |
c98d5d94 | 249 | outp += sprintf(outp, " %%pc2"); |
103a8fea | 250 | if (do_nhm_cstates) |
c98d5d94 | 251 | outp += sprintf(outp, " %%pc3"); |
103a8fea | 252 | if (do_nhm_cstates) |
c98d5d94 | 253 | outp += sprintf(outp, " %%pc6"); |
103a8fea | 254 | if (do_snb_cstates) |
c98d5d94 | 255 | outp += sprintf(outp, " %%pc7"); |
103a8fea | 256 | |
c98d5d94 | 257 | outp += sprintf(outp, "\n"); |
103a8fea LB |
258 | } |
259 | ||
c98d5d94 LB |
260 | int dump_counters(struct thread_data *t, struct core_data *c, |
261 | struct pkg_data *p) | |
103a8fea | 262 | { |
c98d5d94 LB |
263 | fprintf(stderr, "t %p, c %p, p %p\n", t, c, p); |
264 | ||
265 | if (t) { | |
266 | fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags); | |
267 | fprintf(stderr, "TSC: %016llX\n", t->tsc); | |
268 | fprintf(stderr, "aperf: %016llX\n", t->aperf); | |
269 | fprintf(stderr, "mperf: %016llX\n", t->mperf); | |
270 | fprintf(stderr, "c1: %016llX\n", t->c1); | |
8e180f3c LB |
271 | fprintf(stderr, "msr0x%x: %08llX\n", |
272 | extra_delta_offset32, t->extra_delta32); | |
273 | fprintf(stderr, "msr0x%x: %016llX\n", | |
274 | extra_delta_offset64, t->extra_delta64); | |
275 | fprintf(stderr, "msr0x%x: %08llX\n", | |
2f32edf1 | 276 | extra_msr_offset32, t->extra_msr32); |
c98d5d94 | 277 | fprintf(stderr, "msr0x%x: %016llX\n", |
2f32edf1 | 278 | extra_msr_offset64, t->extra_msr64); |
c98d5d94 | 279 | } |
103a8fea | 280 | |
c98d5d94 LB |
281 | if (c) { |
282 | fprintf(stderr, "core: %d\n", c->core_id); | |
283 | fprintf(stderr, "c3: %016llX\n", c->c3); | |
284 | fprintf(stderr, "c6: %016llX\n", c->c6); | |
285 | fprintf(stderr, "c7: %016llX\n", c->c7); | |
286 | } | |
103a8fea | 287 | |
c98d5d94 LB |
288 | if (p) { |
289 | fprintf(stderr, "package: %d\n", p->package_id); | |
290 | fprintf(stderr, "pc2: %016llX\n", p->pc2); | |
291 | fprintf(stderr, "pc3: %016llX\n", p->pc3); | |
292 | fprintf(stderr, "pc6: %016llX\n", p->pc6); | |
293 | fprintf(stderr, "pc7: %016llX\n", p->pc7); | |
294 | } | |
295 | return 0; | |
103a8fea LB |
296 | } |
297 | ||
e23da037 LB |
298 | /* |
299 | * column formatting convention & formats | |
300 | * package: "pk" 2 columns %2d | |
301 | * core: "cor" 3 columns %3d | |
302 | * CPU: "CPU" 3 columns %3d | |
303 | * GHz: "GHz" 3 columns %3.2 | |
304 | * TSC: "TSC" 3 columns %3.2 | |
305 | * percentage " %pc3" %6.2 | |
306 | */ | |
c98d5d94 LB |
307 | int format_counters(struct thread_data *t, struct core_data *c, |
308 | struct pkg_data *p) | |
103a8fea LB |
309 | { |
310 | double interval_float; | |
311 | ||
c98d5d94 LB |
312 | /* if showing only 1st thread in core and this isn't one, bail out */ |
313 | if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) | |
314 | return 0; | |
315 | ||
316 | /* if showing only 1st thread in pkg and this isn't one, bail out */ | |
317 | if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) | |
318 | return 0; | |
319 | ||
103a8fea LB |
320 | interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0; |
321 | ||
c98d5d94 LB |
322 | /* topo columns, print blanks on 1st (average) line */ |
323 | if (t == &average.threads) { | |
103a8fea | 324 | if (show_pkg) |
c98d5d94 | 325 | outp += sprintf(outp, " "); |
e23da037 | 326 | if (show_pkg && show_core) |
c98d5d94 | 327 | outp += sprintf(outp, " "); |
103a8fea | 328 | if (show_core) |
c98d5d94 | 329 | outp += sprintf(outp, " "); |
103a8fea | 330 | if (show_cpu) |
c98d5d94 | 331 | outp += sprintf(outp, " " " "); |
103a8fea | 332 | } else { |
c98d5d94 LB |
333 | if (show_pkg) { |
334 | if (p) | |
335 | outp += sprintf(outp, "%2d", p->package_id); | |
336 | else | |
337 | outp += sprintf(outp, " "); | |
338 | } | |
e23da037 | 339 | if (show_pkg && show_core) |
c98d5d94 LB |
340 | outp += sprintf(outp, " "); |
341 | if (show_core) { | |
342 | if (c) | |
343 | outp += sprintf(outp, "%3d", c->core_id); | |
344 | else | |
345 | outp += sprintf(outp, " "); | |
346 | } | |
103a8fea | 347 | if (show_cpu) |
c98d5d94 | 348 | outp += sprintf(outp, " %3d", t->cpu_id); |
103a8fea LB |
349 | } |
350 | ||
351 | /* %c0 */ | |
352 | if (do_nhm_cstates) { | |
e23da037 | 353 | if (show_pkg || show_core || show_cpu) |
c98d5d94 | 354 | outp += sprintf(outp, " "); |
103a8fea | 355 | if (!skip_c0) |
c98d5d94 | 356 | outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc); |
103a8fea | 357 | else |
c98d5d94 | 358 | outp += sprintf(outp, " ****"); |
103a8fea LB |
359 | } |
360 | ||
361 | /* GHz */ | |
362 | if (has_aperf) { | |
363 | if (!aperf_mperf_unstable) { | |
c98d5d94 LB |
364 | outp += sprintf(outp, " %3.2f", |
365 | 1.0 * t->tsc / units * t->aperf / | |
366 | t->mperf / interval_float); | |
103a8fea | 367 | } else { |
c98d5d94 LB |
368 | if (t->aperf > t->tsc || t->mperf > t->tsc) { |
369 | outp += sprintf(outp, " ***"); | |
103a8fea | 370 | } else { |
c98d5d94 LB |
371 | outp += sprintf(outp, "%3.1f*", |
372 | 1.0 * t->tsc / | |
373 | units * t->aperf / | |
374 | t->mperf / interval_float); | |
103a8fea LB |
375 | } |
376 | } | |
377 | } | |
378 | ||
379 | /* TSC */ | |
c98d5d94 | 380 | outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float); |
103a8fea | 381 | |
8e180f3c LB |
382 | /* delta */ |
383 | if (extra_delta_offset32) | |
384 | outp += sprintf(outp, " %11llu", t->extra_delta32); | |
385 | ||
386 | /* DELTA */ | |
387 | if (extra_delta_offset64) | |
388 | outp += sprintf(outp, " %11llu", t->extra_delta64); | |
2f32edf1 LB |
389 | /* msr */ |
390 | if (extra_msr_offset32) | |
8e180f3c | 391 | outp += sprintf(outp, " 0x%08llx", t->extra_msr32); |
2f32edf1 | 392 | |
130ff304 | 393 | /* MSR */ |
2f32edf1 LB |
394 | if (extra_msr_offset64) |
395 | outp += sprintf(outp, " 0x%016llx", t->extra_msr64); | |
130ff304 | 396 | |
103a8fea LB |
397 | if (do_nhm_cstates) { |
398 | if (!skip_c1) | |
c98d5d94 | 399 | outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc); |
103a8fea | 400 | else |
c98d5d94 | 401 | outp += sprintf(outp, " ****"); |
103a8fea | 402 | } |
c98d5d94 LB |
403 | |
404 | /* print per-core data only for 1st thread in core */ | |
405 | if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) | |
406 | goto done; | |
407 | ||
103a8fea | 408 | if (do_nhm_cstates) |
c98d5d94 | 409 | outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc); |
103a8fea | 410 | if (do_nhm_cstates) |
c98d5d94 | 411 | outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc); |
103a8fea | 412 | if (do_snb_cstates) |
c98d5d94 LB |
413 | outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc); |
414 | ||
415 | /* print per-package data only for 1st core in package */ | |
416 | if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) | |
417 | goto done; | |
418 | ||
103a8fea | 419 | if (do_snb_cstates) |
c98d5d94 | 420 | outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc); |
103a8fea | 421 | if (do_nhm_cstates) |
c98d5d94 | 422 | outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc); |
103a8fea | 423 | if (do_nhm_cstates) |
c98d5d94 | 424 | outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc); |
103a8fea | 425 | if (do_snb_cstates) |
c98d5d94 LB |
426 | outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc); |
427 | done: | |
c98d5d94 LB |
428 | outp += sprintf(outp, "\n"); |
429 | ||
430 | return 0; | |
103a8fea LB |
431 | } |
432 | ||
c98d5d94 LB |
433 | void flush_stdout() |
434 | { | |
435 | fputs(output_buffer, stdout); | |
436 | outp = output_buffer; | |
437 | } | |
438 | void flush_stderr() | |
439 | { | |
440 | fputs(output_buffer, stderr); | |
441 | outp = output_buffer; | |
442 | } | |
443 | void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) | |
103a8fea | 444 | { |
e23da037 | 445 | static int printed; |
103a8fea | 446 | |
e23da037 LB |
447 | if (!printed || !summary_only) |
448 | print_header(); | |
103a8fea | 449 | |
c98d5d94 LB |
450 | if (topo.num_cpus > 1) |
451 | format_counters(&average.threads, &average.cores, | |
452 | &average.packages); | |
103a8fea | 453 | |
e23da037 LB |
454 | printed = 1; |
455 | ||
456 | if (summary_only) | |
457 | return; | |
458 | ||
c98d5d94 | 459 | for_all_cpus(format_counters, t, c, p); |
103a8fea LB |
460 | } |
461 | ||
c98d5d94 LB |
462 | void |
463 | delta_package(struct pkg_data *new, struct pkg_data *old) | |
464 | { | |
465 | old->pc2 = new->pc2 - old->pc2; | |
466 | old->pc3 = new->pc3 - old->pc3; | |
467 | old->pc6 = new->pc6 - old->pc6; | |
468 | old->pc7 = new->pc7 - old->pc7; | |
469 | } | |
103a8fea | 470 | |
c98d5d94 LB |
471 | void |
472 | delta_core(struct core_data *new, struct core_data *old) | |
103a8fea | 473 | { |
c98d5d94 LB |
474 | old->c3 = new->c3 - old->c3; |
475 | old->c6 = new->c6 - old->c6; | |
476 | old->c7 = new->c7 - old->c7; | |
477 | } | |
103a8fea | 478 | |
c3ae331d LB |
479 | /* |
480 | * old = new - old | |
481 | */ | |
c98d5d94 LB |
482 | void |
483 | delta_thread(struct thread_data *new, struct thread_data *old, | |
484 | struct core_data *core_delta) | |
485 | { | |
486 | old->tsc = new->tsc - old->tsc; | |
487 | ||
488 | /* check for TSC < 1 Mcycles over interval */ | |
489 | if (old->tsc < (1000 * 1000)) { | |
490 | fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n"); | |
491 | fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n"); | |
492 | fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n"); | |
493 | exit(-3); | |
494 | } | |
103a8fea | 495 | |
c98d5d94 | 496 | old->c1 = new->c1 - old->c1; |
103a8fea | 497 | |
c98d5d94 LB |
498 | if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) { |
499 | old->aperf = new->aperf - old->aperf; | |
500 | old->mperf = new->mperf - old->mperf; | |
501 | } else { | |
103a8fea | 502 | |
c98d5d94 LB |
503 | if (!aperf_mperf_unstable) { |
504 | fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname); | |
505 | fprintf(stderr, "* Frequency results do not cover entire interval *\n"); | |
506 | fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n"); | |
103a8fea | 507 | |
c98d5d94 | 508 | aperf_mperf_unstable = 1; |
103a8fea | 509 | } |
103a8fea | 510 | /* |
c98d5d94 LB |
511 | * mperf delta is likely a huge "positive" number |
512 | * can not use it for calculating c0 time | |
103a8fea | 513 | */ |
c98d5d94 LB |
514 | skip_c0 = 1; |
515 | skip_c1 = 1; | |
516 | } | |
103a8fea | 517 | |
103a8fea | 518 | |
c98d5d94 | 519 | /* |
c3ae331d LB |
520 | * As counter collection is not atomic, |
521 | * it is possible for mperf's non-halted cycles + idle states | |
c98d5d94 LB |
522 | * to exceed TSC's all cycles: show c1 = 0% in that case. |
523 | */ | |
c3ae331d | 524 | if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc) |
c98d5d94 LB |
525 | old->c1 = 0; |
526 | else { | |
527 | /* normal case, derive c1 */ | |
528 | old->c1 = old->tsc - old->mperf - core_delta->c3 | |
529 | - core_delta->c6 - core_delta->c7; | |
530 | } | |
c3ae331d | 531 | |
c98d5d94 | 532 | if (old->mperf == 0) { |
c3ae331d | 533 | if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id); |
c98d5d94 | 534 | old->mperf = 1; /* divide by 0 protection */ |
103a8fea | 535 | } |
c98d5d94 | 536 | |
8e180f3c LB |
537 | old->extra_delta32 = new->extra_delta32 - old->extra_delta32; |
538 | old->extra_delta32 &= 0xFFFFFFFF; | |
539 | ||
540 | old->extra_delta64 = new->extra_delta64 - old->extra_delta64; | |
541 | ||
c98d5d94 | 542 | /* |
8e180f3c | 543 | * Extra MSR is just a snapshot, simply copy latest w/o subtracting |
c98d5d94 | 544 | */ |
2f32edf1 LB |
545 | old->extra_msr32 = new->extra_msr32; |
546 | old->extra_msr64 = new->extra_msr64; | |
c98d5d94 LB |
547 | } |
548 | ||
549 | int delta_cpu(struct thread_data *t, struct core_data *c, | |
550 | struct pkg_data *p, struct thread_data *t2, | |
551 | struct core_data *c2, struct pkg_data *p2) | |
552 | { | |
553 | /* calculate core delta only for 1st thread in core */ | |
554 | if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE) | |
555 | delta_core(c, c2); | |
556 | ||
557 | /* always calculate thread delta */ | |
558 | delta_thread(t, t2, c2); /* c2 is core delta */ | |
559 | ||
560 | /* calculate package delta only for 1st core in package */ | |
561 | if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE) | |
562 | delta_package(p, p2); | |
563 | ||
103a8fea LB |
564 | return 0; |
565 | } | |
566 | ||
c98d5d94 LB |
567 | void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) |
568 | { | |
569 | t->tsc = 0; | |
570 | t->aperf = 0; | |
571 | t->mperf = 0; | |
572 | t->c1 = 0; | |
573 | ||
8e180f3c LB |
574 | t->extra_delta32 = 0; |
575 | t->extra_delta64 = 0; | |
576 | ||
c98d5d94 LB |
577 | /* tells format_counters to dump all fields from this set */ |
578 | t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE; | |
579 | ||
580 | c->c3 = 0; | |
581 | c->c6 = 0; | |
582 | c->c7 = 0; | |
583 | ||
584 | p->pc2 = 0; | |
585 | p->pc3 = 0; | |
586 | p->pc6 = 0; | |
587 | p->pc7 = 0; | |
588 | } | |
589 | int sum_counters(struct thread_data *t, struct core_data *c, | |
590 | struct pkg_data *p) | |
103a8fea | 591 | { |
c98d5d94 LB |
592 | average.threads.tsc += t->tsc; |
593 | average.threads.aperf += t->aperf; | |
594 | average.threads.mperf += t->mperf; | |
595 | average.threads.c1 += t->c1; | |
103a8fea | 596 | |
8e180f3c LB |
597 | average.threads.extra_delta32 += t->extra_delta32; |
598 | average.threads.extra_delta64 += t->extra_delta64; | |
599 | ||
c98d5d94 LB |
600 | /* sum per-core values only for 1st thread in core */ |
601 | if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) | |
602 | return 0; | |
103a8fea | 603 | |
c98d5d94 LB |
604 | average.cores.c3 += c->c3; |
605 | average.cores.c6 += c->c6; | |
606 | average.cores.c7 += c->c7; | |
607 | ||
608 | /* sum per-pkg values only for 1st core in pkg */ | |
609 | if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) | |
610 | return 0; | |
611 | ||
612 | average.packages.pc2 += p->pc2; | |
613 | average.packages.pc3 += p->pc3; | |
614 | average.packages.pc6 += p->pc6; | |
615 | average.packages.pc7 += p->pc7; | |
616 | ||
617 | return 0; | |
618 | } | |
619 | /* | |
620 | * sum the counters for all cpus in the system | |
621 | * compute the weighted average | |
622 | */ | |
623 | void compute_average(struct thread_data *t, struct core_data *c, | |
624 | struct pkg_data *p) | |
625 | { | |
626 | clear_counters(&average.threads, &average.cores, &average.packages); | |
627 | ||
628 | for_all_cpus(sum_counters, t, c, p); | |
629 | ||
630 | average.threads.tsc /= topo.num_cpus; | |
631 | average.threads.aperf /= topo.num_cpus; | |
632 | average.threads.mperf /= topo.num_cpus; | |
633 | average.threads.c1 /= topo.num_cpus; | |
634 | ||
8e180f3c LB |
635 | average.threads.extra_delta32 /= topo.num_cpus; |
636 | average.threads.extra_delta32 &= 0xFFFFFFFF; | |
637 | ||
638 | average.threads.extra_delta64 /= topo.num_cpus; | |
639 | ||
c98d5d94 LB |
640 | average.cores.c3 /= topo.num_cores; |
641 | average.cores.c6 /= topo.num_cores; | |
642 | average.cores.c7 /= topo.num_cores; | |
643 | ||
644 | average.packages.pc2 /= topo.num_packages; | |
645 | average.packages.pc3 /= topo.num_packages; | |
646 | average.packages.pc6 /= topo.num_packages; | |
647 | average.packages.pc7 /= topo.num_packages; | |
103a8fea LB |
648 | } |
649 | ||
c98d5d94 | 650 | static unsigned long long rdtsc(void) |
103a8fea | 651 | { |
c98d5d94 | 652 | unsigned int low, high; |
15aaa346 | 653 | |
c98d5d94 | 654 | asm volatile("rdtsc" : "=a" (low), "=d" (high)); |
15aaa346 | 655 | |
c98d5d94 LB |
656 | return low | ((unsigned long long)high) << 32; |
657 | } | |
15aaa346 | 658 | |
15aaa346 | 659 | |
c98d5d94 LB |
660 | /* |
661 | * get_counters(...) | |
662 | * migrate to cpu | |
663 | * acquire and record local counters for that cpu | |
664 | */ | |
665 | int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) | |
666 | { | |
667 | int cpu = t->cpu_id; | |
88c3281f | 668 | |
c98d5d94 LB |
669 | if (cpu_migrate(cpu)) |
670 | return -1; | |
15aaa346 | 671 | |
c98d5d94 LB |
672 | t->tsc = rdtsc(); /* we are running on local CPU of interest */ |
673 | ||
674 | if (has_aperf) { | |
675 | if (get_msr(cpu, MSR_APERF, &t->aperf)) | |
676 | return -3; | |
677 | if (get_msr(cpu, MSR_MPERF, &t->mperf)) | |
678 | return -4; | |
679 | } | |
680 | ||
8e180f3c LB |
681 | if (extra_delta_offset32) { |
682 | if (get_msr(cpu, extra_delta_offset32, &t->extra_delta32)) | |
683 | return -5; | |
684 | t->extra_delta32 &= 0xFFFFFFFF; | |
685 | } | |
686 | ||
687 | if (extra_delta_offset64) | |
688 | if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64)) | |
2f32edf1 LB |
689 | return -5; |
690 | ||
8e180f3c LB |
691 | if (extra_msr_offset32) { |
692 | if (get_msr(cpu, extra_msr_offset32, &t->extra_msr32)) | |
693 | return -5; | |
694 | t->extra_msr32 &= 0xFFFFFFFF; | |
695 | } | |
696 | ||
2f32edf1 LB |
697 | if (extra_msr_offset64) |
698 | if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64)) | |
c98d5d94 LB |
699 | return -5; |
700 | ||
701 | /* collect core counters only for 1st thread in core */ | |
702 | if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE)) | |
703 | return 0; | |
704 | ||
705 | if (do_nhm_cstates) { | |
706 | if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3)) | |
707 | return -6; | |
708 | if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6)) | |
709 | return -7; | |
710 | } | |
711 | ||
712 | if (do_snb_cstates) | |
713 | if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7)) | |
714 | return -8; | |
715 | ||
716 | /* collect package counters only for 1st core in package */ | |
717 | if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)) | |
718 | return 0; | |
719 | ||
720 | if (do_nhm_cstates) { | |
721 | if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3)) | |
722 | return -9; | |
723 | if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6)) | |
724 | return -10; | |
725 | } | |
726 | if (do_snb_cstates) { | |
727 | if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2)) | |
728 | return -11; | |
729 | if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7)) | |
730 | return -12; | |
103a8fea | 731 | } |
15aaa346 | 732 | return 0; |
103a8fea LB |
733 | } |
734 | ||
c98d5d94 | 735 | void print_verbose_header(void) |
103a8fea LB |
736 | { |
737 | unsigned long long msr; | |
738 | unsigned int ratio; | |
739 | ||
740 | if (!do_nehalem_platform_info) | |
741 | return; | |
742 | ||
15aaa346 | 743 | get_msr(0, MSR_NEHALEM_PLATFORM_INFO, &msr); |
103a8fea | 744 | |
6574a5d5 LB |
745 | if (verbose > 1) |
746 | fprintf(stderr, "MSR_NEHALEM_PLATFORM_INFO: 0x%llx\n", msr); | |
747 | ||
103a8fea LB |
748 | ratio = (msr >> 40) & 0xFF; |
749 | fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n", | |
750 | ratio, bclk, ratio * bclk); | |
751 | ||
752 | ratio = (msr >> 8) & 0xFF; | |
753 | fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n", | |
754 | ratio, bclk, ratio * bclk); | |
755 | ||
6574a5d5 LB |
756 | if (!do_ivt_turbo_ratio_limit) |
757 | goto print_nhm_turbo_ratio_limits; | |
758 | ||
759 | get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr); | |
760 | ||
103a8fea | 761 | if (verbose > 1) |
6574a5d5 LB |
762 | fprintf(stderr, "MSR_IVT_TURBO_RATIO_LIMIT: 0x%llx\n", msr); |
763 | ||
764 | ratio = (msr >> 56) & 0xFF; | |
765 | if (ratio) | |
766 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 16 active cores\n", | |
767 | ratio, bclk, ratio * bclk); | |
768 | ||
769 | ratio = (msr >> 48) & 0xFF; | |
770 | if (ratio) | |
771 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 15 active cores\n", | |
772 | ratio, bclk, ratio * bclk); | |
773 | ||
774 | ratio = (msr >> 40) & 0xFF; | |
775 | if (ratio) | |
776 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 14 active cores\n", | |
777 | ratio, bclk, ratio * bclk); | |
778 | ||
779 | ratio = (msr >> 32) & 0xFF; | |
780 | if (ratio) | |
781 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 13 active cores\n", | |
782 | ratio, bclk, ratio * bclk); | |
783 | ||
784 | ratio = (msr >> 24) & 0xFF; | |
785 | if (ratio) | |
786 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 12 active cores\n", | |
787 | ratio, bclk, ratio * bclk); | |
788 | ||
789 | ratio = (msr >> 16) & 0xFF; | |
790 | if (ratio) | |
791 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 11 active cores\n", | |
792 | ratio, bclk, ratio * bclk); | |
793 | ||
794 | ratio = (msr >> 8) & 0xFF; | |
795 | if (ratio) | |
796 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 10 active cores\n", | |
797 | ratio, bclk, ratio * bclk); | |
798 | ||
799 | ratio = (msr >> 0) & 0xFF; | |
800 | if (ratio) | |
801 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n", | |
802 | ratio, bclk, ratio * bclk); | |
803 | ||
804 | print_nhm_turbo_ratio_limits: | |
103a8fea LB |
805 | |
806 | if (!do_nehalem_turbo_ratio_limit) | |
807 | return; | |
808 | ||
15aaa346 | 809 | get_msr(0, MSR_NEHALEM_TURBO_RATIO_LIMIT, &msr); |
103a8fea | 810 | |
6574a5d5 LB |
811 | if (verbose > 1) |
812 | fprintf(stderr, "MSR_NEHALEM_TURBO_RATIO_LIMIT: 0x%llx\n", msr); | |
813 | ||
814 | ratio = (msr >> 56) & 0xFF; | |
815 | if (ratio) | |
816 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 8 active cores\n", | |
817 | ratio, bclk, ratio * bclk); | |
818 | ||
819 | ratio = (msr >> 48) & 0xFF; | |
820 | if (ratio) | |
821 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 7 active cores\n", | |
822 | ratio, bclk, ratio * bclk); | |
823 | ||
824 | ratio = (msr >> 40) & 0xFF; | |
825 | if (ratio) | |
826 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 6 active cores\n", | |
827 | ratio, bclk, ratio * bclk); | |
828 | ||
829 | ratio = (msr >> 32) & 0xFF; | |
830 | if (ratio) | |
831 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 5 active cores\n", | |
832 | ratio, bclk, ratio * bclk); | |
833 | ||
103a8fea LB |
834 | ratio = (msr >> 24) & 0xFF; |
835 | if (ratio) | |
836 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n", | |
837 | ratio, bclk, ratio * bclk); | |
838 | ||
839 | ratio = (msr >> 16) & 0xFF; | |
840 | if (ratio) | |
841 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n", | |
842 | ratio, bclk, ratio * bclk); | |
843 | ||
844 | ratio = (msr >> 8) & 0xFF; | |
845 | if (ratio) | |
846 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n", | |
847 | ratio, bclk, ratio * bclk); | |
848 | ||
849 | ratio = (msr >> 0) & 0xFF; | |
850 | if (ratio) | |
851 | fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n", | |
852 | ratio, bclk, ratio * bclk); | |
103a8fea LB |
853 | } |
854 | ||
c98d5d94 | 855 | void free_all_buffers(void) |
103a8fea | 856 | { |
c98d5d94 LB |
857 | CPU_FREE(cpu_present_set); |
858 | cpu_present_set = NULL; | |
859 | cpu_present_set = 0; | |
103a8fea | 860 | |
c98d5d94 LB |
861 | CPU_FREE(cpu_affinity_set); |
862 | cpu_affinity_set = NULL; | |
863 | cpu_affinity_setsize = 0; | |
103a8fea | 864 | |
c98d5d94 LB |
865 | free(thread_even); |
866 | free(core_even); | |
867 | free(package_even); | |
103a8fea | 868 | |
c98d5d94 LB |
869 | thread_even = NULL; |
870 | core_even = NULL; | |
871 | package_even = NULL; | |
103a8fea | 872 | |
c98d5d94 LB |
873 | free(thread_odd); |
874 | free(core_odd); | |
875 | free(package_odd); | |
103a8fea | 876 | |
c98d5d94 LB |
877 | thread_odd = NULL; |
878 | core_odd = NULL; | |
879 | package_odd = NULL; | |
103a8fea | 880 | |
c98d5d94 LB |
881 | free(output_buffer); |
882 | output_buffer = NULL; | |
883 | outp = NULL; | |
103a8fea LB |
884 | } |
885 | ||
c98d5d94 LB |
886 | /* |
887 | * cpu_is_first_sibling_in_core(cpu) | |
888 | * return 1 if given CPU is 1st HT sibling in the core | |
889 | */ | |
890 | int cpu_is_first_sibling_in_core(int cpu) | |
103a8fea | 891 | { |
c98d5d94 LB |
892 | char path[64]; |
893 | FILE *filep; | |
894 | int first_cpu; | |
103a8fea | 895 | |
c98d5d94 LB |
896 | sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu); |
897 | filep = fopen(path, "r"); | |
898 | if (filep == NULL) { | |
899 | perror(path); | |
900 | exit(1); | |
103a8fea | 901 | } |
c98d5d94 LB |
902 | fscanf(filep, "%d", &first_cpu); |
903 | fclose(filep); | |
904 | return (cpu == first_cpu); | |
103a8fea LB |
905 | } |
906 | ||
c98d5d94 LB |
907 | /* |
908 | * cpu_is_first_core_in_package(cpu) | |
909 | * return 1 if given CPU is 1st core in package | |
910 | */ | |
911 | int cpu_is_first_core_in_package(int cpu) | |
103a8fea | 912 | { |
c98d5d94 LB |
913 | char path[64]; |
914 | FILE *filep; | |
915 | int first_cpu; | |
103a8fea | 916 | |
c98d5d94 LB |
917 | sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu); |
918 | filep = fopen(path, "r"); | |
919 | if (filep == NULL) { | |
920 | perror(path); | |
103a8fea LB |
921 | exit(1); |
922 | } | |
c98d5d94 LB |
923 | fscanf(filep, "%d", &first_cpu); |
924 | fclose(filep); | |
925 | return (cpu == first_cpu); | |
103a8fea LB |
926 | } |
927 | ||
928 | int get_physical_package_id(int cpu) | |
929 | { | |
c98d5d94 | 930 | char path[80]; |
103a8fea LB |
931 | FILE *filep; |
932 | int pkg; | |
933 | ||
934 | sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu); | |
935 | filep = fopen(path, "r"); | |
936 | if (filep == NULL) { | |
937 | perror(path); | |
938 | exit(1); | |
939 | } | |
940 | fscanf(filep, "%d", &pkg); | |
941 | fclose(filep); | |
942 | return pkg; | |
943 | } | |
944 | ||
945 | int get_core_id(int cpu) | |
946 | { | |
c98d5d94 | 947 | char path[80]; |
103a8fea LB |
948 | FILE *filep; |
949 | int core; | |
950 | ||
951 | sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu); | |
952 | filep = fopen(path, "r"); | |
953 | if (filep == NULL) { | |
954 | perror(path); | |
955 | exit(1); | |
956 | } | |
957 | fscanf(filep, "%d", &core); | |
958 | fclose(filep); | |
959 | return core; | |
960 | } | |
961 | ||
c98d5d94 LB |
962 | int get_num_ht_siblings(int cpu) |
963 | { | |
964 | char path[80]; | |
965 | FILE *filep; | |
966 | int sib1, sib2; | |
967 | int matches; | |
968 | char character; | |
969 | ||
970 | sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu); | |
971 | filep = fopen(path, "r"); | |
972 | if (filep == NULL) { | |
973 | perror(path); | |
974 | exit(1); | |
975 | } | |
976 | /* | |
977 | * file format: | |
978 | * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4) | |
979 | * otherwinse 1 sibling (self). | |
980 | */ | |
981 | matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2); | |
982 | ||
983 | fclose(filep); | |
984 | ||
985 | if (matches == 3) | |
986 | return 2; | |
987 | else | |
988 | return 1; | |
989 | } | |
990 | ||
103a8fea | 991 | /* |
c98d5d94 LB |
992 | * run func(thread, core, package) in topology order |
993 | * skip non-present cpus | |
103a8fea LB |
994 | */ |
995 | ||
c98d5d94 LB |
996 | int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *, |
997 | struct pkg_data *, struct thread_data *, struct core_data *, | |
998 | struct pkg_data *), struct thread_data *thread_base, | |
999 | struct core_data *core_base, struct pkg_data *pkg_base, | |
1000 | struct thread_data *thread_base2, struct core_data *core_base2, | |
1001 | struct pkg_data *pkg_base2) | |
1002 | { | |
1003 | int retval, pkg_no, core_no, thread_no; | |
1004 | ||
1005 | for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) { | |
1006 | for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) { | |
1007 | for (thread_no = 0; thread_no < | |
1008 | topo.num_threads_per_core; ++thread_no) { | |
1009 | struct thread_data *t, *t2; | |
1010 | struct core_data *c, *c2; | |
1011 | struct pkg_data *p, *p2; | |
1012 | ||
1013 | t = GET_THREAD(thread_base, thread_no, core_no, pkg_no); | |
1014 | ||
1015 | if (cpu_is_not_present(t->cpu_id)) | |
1016 | continue; | |
1017 | ||
1018 | t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no); | |
1019 | ||
1020 | c = GET_CORE(core_base, core_no, pkg_no); | |
1021 | c2 = GET_CORE(core_base2, core_no, pkg_no); | |
1022 | ||
1023 | p = GET_PKG(pkg_base, pkg_no); | |
1024 | p2 = GET_PKG(pkg_base2, pkg_no); | |
1025 | ||
1026 | retval = func(t, c, p, t2, c2, p2); | |
1027 | if (retval) | |
1028 | return retval; | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * run func(cpu) on every cpu in /proc/stat | |
1037 | * return max_cpu number | |
1038 | */ | |
1039 | int for_all_proc_cpus(int (func)(int)) | |
103a8fea LB |
1040 | { |
1041 | FILE *fp; | |
c98d5d94 | 1042 | int cpu_num; |
103a8fea LB |
1043 | int retval; |
1044 | ||
1045 | fp = fopen(proc_stat, "r"); | |
1046 | if (fp == NULL) { | |
1047 | perror(proc_stat); | |
1048 | exit(1); | |
1049 | } | |
1050 | ||
1051 | retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n"); | |
1052 | if (retval != 0) { | |
1053 | perror("/proc/stat format"); | |
1054 | exit(1); | |
1055 | } | |
1056 | ||
c98d5d94 LB |
1057 | while (1) { |
1058 | retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num); | |
103a8fea LB |
1059 | if (retval != 1) |
1060 | break; | |
1061 | ||
c98d5d94 LB |
1062 | retval = func(cpu_num); |
1063 | if (retval) { | |
1064 | fclose(fp); | |
1065 | return(retval); | |
1066 | } | |
103a8fea LB |
1067 | } |
1068 | fclose(fp); | |
c98d5d94 | 1069 | return 0; |
103a8fea LB |
1070 | } |
1071 | ||
1072 | void re_initialize(void) | |
1073 | { | |
c98d5d94 LB |
1074 | free_all_buffers(); |
1075 | setup_all_buffers(); | |
1076 | printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus); | |
103a8fea LB |
1077 | } |
1078 | ||
c98d5d94 | 1079 | |
103a8fea | 1080 | /* |
c98d5d94 LB |
1081 | * count_cpus() |
1082 | * remember the last one seen, it will be the max | |
103a8fea | 1083 | */ |
c98d5d94 | 1084 | int count_cpus(int cpu) |
103a8fea | 1085 | { |
c98d5d94 LB |
1086 | if (topo.max_cpu_num < cpu) |
1087 | topo.max_cpu_num = cpu; | |
103a8fea | 1088 | |
c98d5d94 LB |
1089 | topo.num_cpus += 1; |
1090 | return 0; | |
1091 | } | |
1092 | int mark_cpu_present(int cpu) | |
1093 | { | |
1094 | CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set); | |
15aaa346 | 1095 | return 0; |
103a8fea LB |
1096 | } |
1097 | ||
1098 | void turbostat_loop() | |
1099 | { | |
c98d5d94 LB |
1100 | int retval; |
1101 | ||
103a8fea | 1102 | restart: |
c98d5d94 LB |
1103 | retval = for_all_cpus(get_counters, EVEN_COUNTERS); |
1104 | if (retval) { | |
1105 | re_initialize(); | |
1106 | goto restart; | |
1107 | } | |
103a8fea LB |
1108 | gettimeofday(&tv_even, (struct timezone *)NULL); |
1109 | ||
1110 | while (1) { | |
c98d5d94 | 1111 | if (for_all_proc_cpus(cpu_is_not_present)) { |
103a8fea LB |
1112 | re_initialize(); |
1113 | goto restart; | |
1114 | } | |
1115 | sleep(interval_sec); | |
c98d5d94 LB |
1116 | retval = for_all_cpus(get_counters, ODD_COUNTERS); |
1117 | if (retval) { | |
15aaa346 LB |
1118 | re_initialize(); |
1119 | goto restart; | |
1120 | } | |
103a8fea | 1121 | gettimeofday(&tv_odd, (struct timezone *)NULL); |
103a8fea | 1122 | timersub(&tv_odd, &tv_even, &tv_delta); |
c98d5d94 LB |
1123 | for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS); |
1124 | compute_average(EVEN_COUNTERS); | |
1125 | format_all_counters(EVEN_COUNTERS); | |
1126 | flush_stdout(); | |
15aaa346 | 1127 | sleep(interval_sec); |
c98d5d94 LB |
1128 | retval = for_all_cpus(get_counters, EVEN_COUNTERS); |
1129 | if (retval) { | |
103a8fea LB |
1130 | re_initialize(); |
1131 | goto restart; | |
1132 | } | |
103a8fea | 1133 | gettimeofday(&tv_even, (struct timezone *)NULL); |
103a8fea | 1134 | timersub(&tv_even, &tv_odd, &tv_delta); |
c98d5d94 LB |
1135 | for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS); |
1136 | compute_average(ODD_COUNTERS); | |
1137 | format_all_counters(ODD_COUNTERS); | |
1138 | flush_stdout(); | |
103a8fea LB |
1139 | } |
1140 | } | |
1141 | ||
1142 | void check_dev_msr() | |
1143 | { | |
1144 | struct stat sb; | |
1145 | ||
1146 | if (stat("/dev/cpu/0/msr", &sb)) { | |
1147 | fprintf(stderr, "no /dev/cpu/0/msr\n"); | |
1148 | fprintf(stderr, "Try \"# modprobe msr\"\n"); | |
1149 | exit(-5); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | void check_super_user() | |
1154 | { | |
1155 | if (getuid() != 0) { | |
1156 | fprintf(stderr, "must be root\n"); | |
1157 | exit(-6); | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model) | |
1162 | { | |
1163 | if (!genuine_intel) | |
1164 | return 0; | |
1165 | ||
1166 | if (family != 6) | |
1167 | return 0; | |
1168 | ||
1169 | switch (model) { | |
1170 | case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */ | |
1171 | case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */ | |
1172 | case 0x1F: /* Core i7 and i5 Processor - Nehalem */ | |
1173 | case 0x25: /* Westmere Client - Clarkdale, Arrandale */ | |
1174 | case 0x2C: /* Westmere EP - Gulftown */ | |
1175 | case 0x2A: /* SNB */ | |
1176 | case 0x2D: /* SNB Xeon */ | |
553575f1 | 1177 | case 0x3A: /* IVB */ |
1300651b | 1178 | case 0x3E: /* IVB Xeon */ |
103a8fea LB |
1179 | return 1; |
1180 | case 0x2E: /* Nehalem-EX Xeon - Beckton */ | |
1181 | case 0x2F: /* Westmere-EX Xeon - Eagleton */ | |
1182 | default: | |
1183 | return 0; | |
1184 | } | |
1185 | } | |
6574a5d5 LB |
1186 | int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model) |
1187 | { | |
1188 | if (!genuine_intel) | |
1189 | return 0; | |
1190 | ||
1191 | if (family != 6) | |
1192 | return 0; | |
1193 | ||
1194 | switch (model) { | |
1195 | case 0x3E: /* IVB Xeon */ | |
1196 | return 1; | |
1197 | default: | |
1198 | return 0; | |
1199 | } | |
1200 | } | |
1201 | ||
103a8fea LB |
1202 | |
1203 | int is_snb(unsigned int family, unsigned int model) | |
1204 | { | |
1205 | if (!genuine_intel) | |
1206 | return 0; | |
1207 | ||
1208 | switch (model) { | |
1209 | case 0x2A: | |
1210 | case 0x2D: | |
650a37f3 | 1211 | case 0x3A: /* IVB */ |
1300651b | 1212 | case 0x3E: /* IVB Xeon */ |
103a8fea LB |
1213 | return 1; |
1214 | } | |
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | double discover_bclk(unsigned int family, unsigned int model) | |
1219 | { | |
1220 | if (is_snb(family, model)) | |
1221 | return 100.00; | |
1222 | else | |
1223 | return 133.33; | |
1224 | } | |
1225 | ||
1226 | void check_cpuid() | |
1227 | { | |
1228 | unsigned int eax, ebx, ecx, edx, max_level; | |
1229 | unsigned int fms, family, model, stepping; | |
1230 | ||
1231 | eax = ebx = ecx = edx = 0; | |
1232 | ||
1233 | asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0)); | |
1234 | ||
1235 | if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e) | |
1236 | genuine_intel = 1; | |
1237 | ||
1238 | if (verbose) | |
1239 | fprintf(stderr, "%.4s%.4s%.4s ", | |
1240 | (char *)&ebx, (char *)&edx, (char *)&ecx); | |
1241 | ||
1242 | asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx"); | |
1243 | family = (fms >> 8) & 0xf; | |
1244 | model = (fms >> 4) & 0xf; | |
1245 | stepping = fms & 0xf; | |
1246 | if (family == 6 || family == 0xf) | |
1247 | model += ((fms >> 16) & 0xf) << 4; | |
1248 | ||
1249 | if (verbose) | |
1250 | fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n", | |
1251 | max_level, family, model, stepping, family, model, stepping); | |
1252 | ||
1253 | if (!(edx & (1 << 5))) { | |
1254 | fprintf(stderr, "CPUID: no MSR\n"); | |
1255 | exit(1); | |
1256 | } | |
1257 | ||
1258 | /* | |
1259 | * check max extended function levels of CPUID. | |
1260 | * This is needed to check for invariant TSC. | |
1261 | * This check is valid for both Intel and AMD. | |
1262 | */ | |
1263 | ebx = ecx = edx = 0; | |
1264 | asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000)); | |
1265 | ||
1266 | if (max_level < 0x80000007) { | |
1267 | fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level); | |
1268 | exit(1); | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8 | |
1273 | * this check is valid for both Intel and AMD | |
1274 | */ | |
1275 | asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007)); | |
8209e054 | 1276 | has_invariant_tsc = edx & (1 << 8); |
103a8fea LB |
1277 | |
1278 | if (!has_invariant_tsc) { | |
1279 | fprintf(stderr, "No invariant TSC\n"); | |
1280 | exit(1); | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0 | |
1285 | * this check is valid for both Intel and AMD | |
1286 | */ | |
1287 | ||
1288 | asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6)); | |
8209e054 | 1289 | has_aperf = ecx & (1 << 0); |
103a8fea LB |
1290 | if (!has_aperf) { |
1291 | fprintf(stderr, "No APERF MSR\n"); | |
1292 | exit(1); | |
1293 | } | |
1294 | ||
1295 | do_nehalem_platform_info = genuine_intel && has_invariant_tsc; | |
1296 | do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */ | |
1297 | do_snb_cstates = is_snb(family, model); | |
1298 | bclk = discover_bclk(family, model); | |
1299 | ||
1300 | do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model); | |
6574a5d5 | 1301 | do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model); |
103a8fea LB |
1302 | } |
1303 | ||
1304 | ||
1305 | void usage() | |
1306 | { | |
8e180f3c | 1307 | fprintf(stderr, "%s: [-v][-d MSR#][-D MSR#][-m MSR#][-M MSR#][-i interval_sec | command ...]\n", |
103a8fea LB |
1308 | progname); |
1309 | exit(1); | |
1310 | } | |
1311 | ||
1312 | ||
1313 | /* | |
1314 | * in /dev/cpu/ return success for names that are numbers | |
1315 | * ie. filter out ".", "..", "microcode". | |
1316 | */ | |
1317 | int dir_filter(const struct dirent *dirp) | |
1318 | { | |
1319 | if (isdigit(dirp->d_name[0])) | |
1320 | return 1; | |
1321 | else | |
1322 | return 0; | |
1323 | } | |
1324 | ||
1325 | int open_dev_cpu_msr(int dummy1) | |
1326 | { | |
1327 | return 0; | |
1328 | } | |
1329 | ||
c98d5d94 LB |
1330 | void topology_probe() |
1331 | { | |
1332 | int i; | |
1333 | int max_core_id = 0; | |
1334 | int max_package_id = 0; | |
1335 | int max_siblings = 0; | |
1336 | struct cpu_topology { | |
1337 | int core_id; | |
1338 | int physical_package_id; | |
1339 | } *cpus; | |
1340 | ||
1341 | /* Initialize num_cpus, max_cpu_num */ | |
1342 | topo.num_cpus = 0; | |
1343 | topo.max_cpu_num = 0; | |
1344 | for_all_proc_cpus(count_cpus); | |
1345 | if (!summary_only && topo.num_cpus > 1) | |
1346 | show_cpu = 1; | |
1347 | ||
1348 | if (verbose > 1) | |
1349 | fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num); | |
1350 | ||
1351 | cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology)); | |
1352 | if (cpus == NULL) { | |
1353 | perror("calloc cpus"); | |
1354 | exit(1); | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Allocate and initialize cpu_present_set | |
1359 | */ | |
1360 | cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1)); | |
1361 | if (cpu_present_set == NULL) { | |
1362 | perror("CPU_ALLOC"); | |
1363 | exit(3); | |
1364 | } | |
1365 | cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1)); | |
1366 | CPU_ZERO_S(cpu_present_setsize, cpu_present_set); | |
1367 | for_all_proc_cpus(mark_cpu_present); | |
1368 | ||
1369 | /* | |
1370 | * Allocate and initialize cpu_affinity_set | |
1371 | */ | |
1372 | cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1)); | |
1373 | if (cpu_affinity_set == NULL) { | |
1374 | perror("CPU_ALLOC"); | |
1375 | exit(3); | |
1376 | } | |
1377 | cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1)); | |
1378 | CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set); | |
1379 | ||
1380 | ||
1381 | /* | |
1382 | * For online cpus | |
1383 | * find max_core_id, max_package_id | |
1384 | */ | |
1385 | for (i = 0; i <= topo.max_cpu_num; ++i) { | |
1386 | int siblings; | |
1387 | ||
1388 | if (cpu_is_not_present(i)) { | |
1389 | if (verbose > 1) | |
1390 | fprintf(stderr, "cpu%d NOT PRESENT\n", i); | |
1391 | continue; | |
1392 | } | |
1393 | cpus[i].core_id = get_core_id(i); | |
1394 | if (cpus[i].core_id > max_core_id) | |
1395 | max_core_id = cpus[i].core_id; | |
1396 | ||
1397 | cpus[i].physical_package_id = get_physical_package_id(i); | |
1398 | if (cpus[i].physical_package_id > max_package_id) | |
1399 | max_package_id = cpus[i].physical_package_id; | |
1400 | ||
1401 | siblings = get_num_ht_siblings(i); | |
1402 | if (siblings > max_siblings) | |
1403 | max_siblings = siblings; | |
1404 | if (verbose > 1) | |
1405 | fprintf(stderr, "cpu %d pkg %d core %d\n", | |
1406 | i, cpus[i].physical_package_id, cpus[i].core_id); | |
1407 | } | |
1408 | topo.num_cores_per_pkg = max_core_id + 1; | |
1409 | if (verbose > 1) | |
1410 | fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n", | |
1411 | max_core_id, topo.num_cores_per_pkg); | |
1412 | if (!summary_only && topo.num_cores_per_pkg > 1) | |
1413 | show_core = 1; | |
1414 | ||
1415 | topo.num_packages = max_package_id + 1; | |
1416 | if (verbose > 1) | |
1417 | fprintf(stderr, "max_package_id %d, sizing for %d packages\n", | |
1418 | max_package_id, topo.num_packages); | |
1419 | if (!summary_only && topo.num_packages > 1) | |
1420 | show_pkg = 1; | |
1421 | ||
1422 | topo.num_threads_per_core = max_siblings; | |
1423 | if (verbose > 1) | |
1424 | fprintf(stderr, "max_siblings %d\n", max_siblings); | |
1425 | ||
1426 | free(cpus); | |
1427 | } | |
1428 | ||
1429 | void | |
1430 | allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p) | |
1431 | { | |
1432 | int i; | |
1433 | ||
1434 | *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg * | |
1435 | topo.num_packages, sizeof(struct thread_data)); | |
1436 | if (*t == NULL) | |
1437 | goto error; | |
1438 | ||
1439 | for (i = 0; i < topo.num_threads_per_core * | |
1440 | topo.num_cores_per_pkg * topo.num_packages; i++) | |
1441 | (*t)[i].cpu_id = -1; | |
1442 | ||
1443 | *c = calloc(topo.num_cores_per_pkg * topo.num_packages, | |
1444 | sizeof(struct core_data)); | |
1445 | if (*c == NULL) | |
1446 | goto error; | |
1447 | ||
1448 | for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++) | |
1449 | (*c)[i].core_id = -1; | |
1450 | ||
1451 | *p = calloc(topo.num_packages, sizeof(struct pkg_data)); | |
1452 | if (*p == NULL) | |
1453 | goto error; | |
1454 | ||
1455 | for (i = 0; i < topo.num_packages; i++) | |
1456 | (*p)[i].package_id = i; | |
1457 | ||
1458 | return; | |
1459 | error: | |
1460 | perror("calloc counters"); | |
1461 | exit(1); | |
1462 | } | |
1463 | /* | |
1464 | * init_counter() | |
1465 | * | |
1466 | * set cpu_id, core_num, pkg_num | |
1467 | * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE | |
1468 | * | |
1469 | * increment topo.num_cores when 1st core in pkg seen | |
1470 | */ | |
1471 | void init_counter(struct thread_data *thread_base, struct core_data *core_base, | |
1472 | struct pkg_data *pkg_base, int thread_num, int core_num, | |
1473 | int pkg_num, int cpu_id) | |
1474 | { | |
1475 | struct thread_data *t; | |
1476 | struct core_data *c; | |
1477 | struct pkg_data *p; | |
1478 | ||
1479 | t = GET_THREAD(thread_base, thread_num, core_num, pkg_num); | |
1480 | c = GET_CORE(core_base, core_num, pkg_num); | |
1481 | p = GET_PKG(pkg_base, pkg_num); | |
1482 | ||
1483 | t->cpu_id = cpu_id; | |
1484 | if (thread_num == 0) { | |
1485 | t->flags |= CPU_IS_FIRST_THREAD_IN_CORE; | |
1486 | if (cpu_is_first_core_in_package(cpu_id)) | |
1487 | t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE; | |
1488 | } | |
1489 | ||
1490 | c->core_id = core_num; | |
1491 | p->package_id = pkg_num; | |
1492 | } | |
1493 | ||
1494 | ||
1495 | int initialize_counters(int cpu_id) | |
1496 | { | |
1497 | int my_thread_id, my_core_id, my_package_id; | |
1498 | ||
1499 | my_package_id = get_physical_package_id(cpu_id); | |
1500 | my_core_id = get_core_id(cpu_id); | |
1501 | ||
1502 | if (cpu_is_first_sibling_in_core(cpu_id)) { | |
1503 | my_thread_id = 0; | |
1504 | topo.num_cores++; | |
1505 | } else { | |
1506 | my_thread_id = 1; | |
1507 | } | |
1508 | ||
1509 | init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id); | |
1510 | init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | void allocate_output_buffer() | |
1515 | { | |
1516 | output_buffer = calloc(1, (1 + topo.num_cpus) * 128); | |
1517 | outp = output_buffer; | |
1518 | if (outp == NULL) { | |
1519 | perror("calloc"); | |
1520 | exit(-1); | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | void setup_all_buffers(void) | |
1525 | { | |
1526 | topology_probe(); | |
1527 | allocate_counters(&thread_even, &core_even, &package_even); | |
1528 | allocate_counters(&thread_odd, &core_odd, &package_odd); | |
1529 | allocate_output_buffer(); | |
1530 | for_all_proc_cpus(initialize_counters); | |
1531 | } | |
103a8fea LB |
1532 | void turbostat_init() |
1533 | { | |
1534 | check_cpuid(); | |
1535 | ||
1536 | check_dev_msr(); | |
1537 | check_super_user(); | |
1538 | ||
c98d5d94 | 1539 | setup_all_buffers(); |
103a8fea LB |
1540 | |
1541 | if (verbose) | |
c98d5d94 | 1542 | print_verbose_header(); |
103a8fea LB |
1543 | } |
1544 | ||
1545 | int fork_it(char **argv) | |
1546 | { | |
103a8fea | 1547 | pid_t child_pid; |
d15cf7c1 | 1548 | |
c98d5d94 LB |
1549 | for_all_cpus(get_counters, EVEN_COUNTERS); |
1550 | /* clear affinity side-effect of get_counters() */ | |
1551 | sched_setaffinity(0, cpu_present_setsize, cpu_present_set); | |
103a8fea LB |
1552 | gettimeofday(&tv_even, (struct timezone *)NULL); |
1553 | ||
1554 | child_pid = fork(); | |
1555 | if (!child_pid) { | |
1556 | /* child */ | |
1557 | execvp(argv[0], argv); | |
1558 | } else { | |
1559 | int status; | |
1560 | ||
1561 | /* parent */ | |
1562 | if (child_pid == -1) { | |
1563 | perror("fork"); | |
1564 | exit(1); | |
1565 | } | |
1566 | ||
1567 | signal(SIGINT, SIG_IGN); | |
1568 | signal(SIGQUIT, SIG_IGN); | |
1569 | if (waitpid(child_pid, &status, 0) == -1) { | |
1570 | perror("wait"); | |
1571 | exit(1); | |
1572 | } | |
1573 | } | |
c98d5d94 LB |
1574 | /* |
1575 | * n.b. fork_it() does not check for errors from for_all_cpus() | |
1576 | * because re-starting is problematic when forking | |
1577 | */ | |
1578 | for_all_cpus(get_counters, ODD_COUNTERS); | |
103a8fea | 1579 | gettimeofday(&tv_odd, (struct timezone *)NULL); |
103a8fea | 1580 | timersub(&tv_odd, &tv_even, &tv_delta); |
c98d5d94 LB |
1581 | for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS); |
1582 | compute_average(EVEN_COUNTERS); | |
1583 | format_all_counters(EVEN_COUNTERS); | |
1584 | flush_stderr(); | |
103a8fea | 1585 | |
6eab04a8 | 1586 | fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0); |
103a8fea LB |
1587 | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | void cmdline(int argc, char **argv) | |
1592 | { | |
1593 | int opt; | |
1594 | ||
1595 | progname = argv[0]; | |
1596 | ||
8e180f3c | 1597 | while ((opt = getopt(argc, argv, "+cpsvid:D:m:M:")) != -1) { |
103a8fea | 1598 | switch (opt) { |
c98d5d94 LB |
1599 | case 'c': |
1600 | show_core_only++; | |
1601 | break; | |
1602 | case 'p': | |
1603 | show_pkg_only++; | |
1604 | break; | |
e23da037 LB |
1605 | case 's': |
1606 | summary_only++; | |
1607 | break; | |
103a8fea LB |
1608 | case 'v': |
1609 | verbose++; | |
1610 | break; | |
1611 | case 'i': | |
1612 | interval_sec = atoi(optarg); | |
1613 | break; | |
8e180f3c LB |
1614 | case 'd': |
1615 | sscanf(optarg, "%x", &extra_delta_offset32); | |
1616 | break; | |
1617 | case 'D': | |
1618 | sscanf(optarg, "%x", &extra_delta_offset64); | |
1619 | break; | |
2f32edf1 LB |
1620 | case 'm': |
1621 | sscanf(optarg, "%x", &extra_msr_offset32); | |
2f32edf1 | 1622 | break; |
103a8fea | 1623 | case 'M': |
2f32edf1 | 1624 | sscanf(optarg, "%x", &extra_msr_offset64); |
103a8fea LB |
1625 | break; |
1626 | default: | |
1627 | usage(); | |
1628 | } | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | int main(int argc, char **argv) | |
1633 | { | |
1634 | cmdline(argc, argv); | |
1635 | ||
1636 | if (verbose > 1) | |
c98d5d94 | 1637 | fprintf(stderr, "turbostat v2.0 May 16, 2012" |
103a8fea | 1638 | " - Len Brown <lenb@kernel.org>\n"); |
103a8fea LB |
1639 | |
1640 | turbostat_init(); | |
1641 | ||
1642 | /* | |
1643 | * if any params left, it must be a command to fork | |
1644 | */ | |
1645 | if (argc - optind) | |
1646 | return fork_it(argv + optind); | |
1647 | else | |
1648 | turbostat_loop(); | |
1649 | ||
1650 | return 0; | |
1651 | } |