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gerrit-public.fairphone.software / kernel / msm-4.9 / 573ea5fcf0a65fea4811f82edd6dc6045c04edda / . / tools / power / x86 / turbostat / turbostat.c
blob: ea095abbe97e7cc7bec26c575a1d177dc1e2c61d [file] [log] [blame]
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1/*
2 * turbostat -- show CPU frequency and C-state residency
3 * on modern Intel turbo-capable processors.
4 *
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]5 * Copyright (c) 2012 Intel Corporation.
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]22#define _GNU_SOURCE
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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>
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]36#include <sched.h>
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]37
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]38#define MSR_NEHALEM_PLATFORM_INFO 0xCE
39#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1AD
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]40#define MSR_IVT_TURBO_RATIO_LIMIT 0x1AE
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
51char *proc_stat = "/proc/stat";
52unsigned int interval_sec = 5; /* set with -i interval_sec */
53unsigned int verbose; /* set with -v */
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]54unsigned int summary_only; /* set with -s */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]55unsigned int skip_c0;
56unsigned int skip_c1;
57unsigned int do_nhm_cstates;
58unsigned int do_snb_cstates;
59unsigned int has_aperf;
60unsigned int units = 1000000000; /* Ghz etc */
61unsigned int genuine_intel;
62unsigned int has_invariant_tsc;
63unsigned int do_nehalem_platform_info;
64unsigned int do_nehalem_turbo_ratio_limit;
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]65unsigned int do_ivt_turbo_ratio_limit;
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]66unsigned int extra_msr_offset32;
67unsigned int extra_msr_offset64;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]68unsigned int extra_delta_offset32;
69unsigned int extra_delta_offset64;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]70double bclk;
71unsigned int show_pkg;
72unsigned int show_core;
73unsigned int show_cpu;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]74unsigned int show_pkg_only;
75unsigned int show_core_only;
76char *output_buffer, *outp;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]77
78int aperf_mperf_unstable;
79int backwards_count;
80char *progname;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]81
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]82cpu_set_t *cpu_present_set, *cpu_affinity_set;
83size_t cpu_present_setsize, cpu_affinity_setsize;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]84
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]85struct thread_data {
86 unsigned long long tsc;
87 unsigned long long aperf;
88 unsigned long long mperf;
89 unsigned long long c1; /* derived */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]90 unsigned long long extra_msr64;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]91 unsigned long long extra_delta64;
92 unsigned long long extra_msr32;
93 unsigned long long extra_delta32;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]99
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]100struct 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;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]106
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]107struct 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
126struct system_summary {
127 struct thread_data threads;
128 struct core_data cores;
129 struct pkg_data packages;
130} sum, average;
131
132
133struct 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
142struct timeval tv_even, tv_odd, tv_delta;
143
144void setup_all_buffers(void);
145
146int cpu_is_not_present(int cpu)
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]147{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]148 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]149}
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]150/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]151 * run func(thread, core, package) in topology order
152 * skip non-present cpus
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]153 */
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]154
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]155int 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)
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]157{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]158 int retval, pkg_no, core_no, thread_no;
159
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;
167
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;
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]183}
184
185int cpu_migrate(int cpu)
186{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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)
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]190 return -1;
191 else
192 return 0;
193}
194
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]195int get_msr(int cpu, off_t offset, unsigned long long *msr)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]196{
197 ssize_t retval;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]198 char pathname[32];
199 int fd;
200
201 sprintf(pathname, "/dev/cpu/%d/msr", cpu);
202 fd = open(pathname, O_RDONLY);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]203 if (fd < 0)
204 return -1;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]205
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]206 retval = pread(fd, msr, sizeof *msr, offset);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]207 close(fd);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]208
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]209 if (retval != sizeof *msr) {
210 fprintf(stderr, "%s offset 0x%zx read failed\n", pathname, offset);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]211 return -1;
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]212 }
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]213
214 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]215}
216
Len Browna829eb42011-02-10 23:36:34 -0500[diff] [blame]217void print_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]218{
219 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]220 outp += sprintf(outp, "pk");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]221 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]222 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]223 if (show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]224 outp += sprintf(outp, "cor");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]225 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]226 outp += sprintf(outp, " CPU");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]227 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]228 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]229 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]230 outp += sprintf(outp, " %%c0");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]231 if (has_aperf)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]232 outp += sprintf(outp, " GHz");
233 outp += sprintf(outp, " TSC");
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]234 if (extra_delta_offset32)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]235 outp += sprintf(outp, " count 0x%03X", extra_delta_offset32);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]236 if (extra_delta_offset64)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]237 outp += sprintf(outp, " COUNT 0x%03X", extra_delta_offset64);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]238 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]239 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]240 if (extra_msr_offset64)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]241 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]242 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]243 outp += sprintf(outp, " %%c1");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]244 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]245 outp += sprintf(outp, " %%c3");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]246 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]247 outp += sprintf(outp, " %%c6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]248 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]249 outp += sprintf(outp, " %%c7");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]250 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]251 outp += sprintf(outp, " %%pc2");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]252 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]253 outp += sprintf(outp, " %%pc3");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]254 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]255 outp += sprintf(outp, " %%pc6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]256 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]257 outp += sprintf(outp, " %%pc7");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]258
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]259 outp += sprintf(outp, "\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]260}
261
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]262int dump_counters(struct thread_data *t, struct core_data *c,
263 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]264{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]265 fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]266
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]267 if (t) {
268 fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags);
269 fprintf(stderr, "TSC: %016llX\n", t->tsc);
270 fprintf(stderr, "aperf: %016llX\n", t->aperf);
271 fprintf(stderr, "mperf: %016llX\n", t->mperf);
272 fprintf(stderr, "c1: %016llX\n", t->c1);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]273 fprintf(stderr, "msr0x%x: %08llX\n",
274 extra_delta_offset32, t->extra_delta32);
275 fprintf(stderr, "msr0x%x: %016llX\n",
276 extra_delta_offset64, t->extra_delta64);
277 fprintf(stderr, "msr0x%x: %08llX\n",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]278 extra_msr_offset32, t->extra_msr32);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]279 fprintf(stderr, "msr0x%x: %016llX\n",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]280 extra_msr_offset64, t->extra_msr64);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]281 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]282
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]283 if (c) {
284 fprintf(stderr, "core: %d\n", c->core_id);
285 fprintf(stderr, "c3: %016llX\n", c->c3);
286 fprintf(stderr, "c6: %016llX\n", c->c6);
287 fprintf(stderr, "c7: %016llX\n", c->c7);
288 }
289
290 if (p) {
291 fprintf(stderr, "package: %d\n", p->package_id);
292 fprintf(stderr, "pc2: %016llX\n", p->pc2);
293 fprintf(stderr, "pc3: %016llX\n", p->pc3);
294 fprintf(stderr, "pc6: %016llX\n", p->pc6);
295 fprintf(stderr, "pc7: %016llX\n", p->pc7);
296 }
297 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]298}
299
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]300/*
301 * column formatting convention & formats
302 * package: "pk" 2 columns %2d
303 * core: "cor" 3 columns %3d
304 * CPU: "CPU" 3 columns %3d
305 * GHz: "GHz" 3 columns %3.2
306 * TSC: "TSC" 3 columns %3.2
307 * percentage " %pc3" %6.2
308 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]309int format_counters(struct thread_data *t, struct core_data *c,
310 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]311{
312 double interval_float;
313
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]314 /* if showing only 1st thread in core and this isn't one, bail out */
315 if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
316 return 0;
317
318 /* if showing only 1st thread in pkg and this isn't one, bail out */
319 if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
320 return 0;
321
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]322 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
323
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]324 /* topo columns, print blanks on 1st (average) line */
325 if (t == &average.threads) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]326 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]327 outp += sprintf(outp, " ");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]328 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]329 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]330 if (show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]331 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]332 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]333 outp += sprintf(outp, " " " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]334 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]335 if (show_pkg) {
336 if (p)
337 outp += sprintf(outp, "%2d", p->package_id);
338 else
339 outp += sprintf(outp, " ");
340 }
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]341 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]342 outp += sprintf(outp, " ");
343 if (show_core) {
344 if (c)
345 outp += sprintf(outp, "%3d", c->core_id);
346 else
347 outp += sprintf(outp, " ");
348 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]349 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]350 outp += sprintf(outp, " %3d", t->cpu_id);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]351 }
352
353 /* %c0 */
354 if (do_nhm_cstates) {
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]355 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]356 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]357 if (!skip_c0)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]358 outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]359 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]360 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]361 }
362
363 /* GHz */
364 if (has_aperf) {
365 if (!aperf_mperf_unstable) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]366 outp += sprintf(outp, " %3.2f",
367 1.0 * t->tsc / units * t->aperf /
368 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]369 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]370 if (t->aperf > t->tsc || t->mperf > t->tsc) {
371 outp += sprintf(outp, " ***");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]372 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]373 outp += sprintf(outp, "%3.1f*",
374 1.0 * t->tsc /
375 units * t->aperf /
376 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]377 }
378 }
379 }
380
381 /* TSC */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]382 outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]383
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]384 /* delta */
385 if (extra_delta_offset32)
386 outp += sprintf(outp, " %11llu", t->extra_delta32);
387
388 /* DELTA */
389 if (extra_delta_offset64)
390 outp += sprintf(outp, " %11llu", t->extra_delta64);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]391 /* msr */
392 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]393 outp += sprintf(outp, " 0x%08llx", t->extra_msr32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]394
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]395 /* MSR */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]396 if (extra_msr_offset64)
397 outp += sprintf(outp, " 0x%016llx", t->extra_msr64);
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]398
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]399 if (do_nhm_cstates) {
400 if (!skip_c1)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]401 outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]402 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]403 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]404 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]405
406 /* print per-core data only for 1st thread in core */
407 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
408 goto done;
409
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]410 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]411 outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]412 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]413 outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]414 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]415 outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc);
416
417 /* print per-package data only for 1st core in package */
418 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
419 goto done;
420
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]421 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]422 outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]423 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]424 outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]425 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]426 outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]427 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]428 outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
429done:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]430 outp += sprintf(outp, "\n");
431
432 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]433}
434
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]435void flush_stdout()
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]436{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]437 fputs(output_buffer, stdout);
438 outp = output_buffer;
439}
440void flush_stderr()
441{
442 fputs(output_buffer, stderr);
443 outp = output_buffer;
444}
445void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
446{
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]447 static int printed;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]448
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]449 if (!printed || !summary_only)
450 print_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]451
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]452 if (topo.num_cpus > 1)
453 format_counters(&average.threads, &average.cores,
454 &average.packages);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]455
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]456 printed = 1;
457
458 if (summary_only)
459 return;
460
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]461 for_all_cpus(format_counters, t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]462}
463
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]464void
465delta_package(struct pkg_data *new, struct pkg_data *old)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]466{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]467 old->pc2 = new->pc2 - old->pc2;
468 old->pc3 = new->pc3 - old->pc3;
469 old->pc6 = new->pc6 - old->pc6;
470 old->pc7 = new->pc7 - old->pc7;
471}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]472
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]473void
474delta_core(struct core_data *new, struct core_data *old)
475{
476 old->c3 = new->c3 - old->c3;
477 old->c6 = new->c6 - old->c6;
478 old->c7 = new->c7 - old->c7;
479}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]480
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]481/*
482 * old = new - old
483 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]484void
485delta_thread(struct thread_data *new, struct thread_data *old,
486 struct core_data *core_delta)
487{
488 old->tsc = new->tsc - old->tsc;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]489
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]490 /* check for TSC < 1 Mcycles over interval */
491 if (old->tsc < (1000 * 1000)) {
492 fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n");
493 fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n");
494 fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n");
495 exit(-3);
496 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]497
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]498 old->c1 = new->c1 - old->c1;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]499
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]500 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
501 old->aperf = new->aperf - old->aperf;
502 old->mperf = new->mperf - old->mperf;
503 } else {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]504
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]505 if (!aperf_mperf_unstable) {
506 fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
507 fprintf(stderr, "* Frequency results do not cover entire interval *\n");
508 fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
509
510 aperf_mperf_unstable = 1;
511 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]512 /*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]513 * mperf delta is likely a huge "positive" number
514 * can not use it for calculating c0 time
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]515 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]516 skip_c0 = 1;
517 skip_c1 = 1;
518 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]519
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]520
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]521 /*
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]522 * As counter collection is not atomic,
523 * it is possible for mperf's non-halted cycles + idle states
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]524 * to exceed TSC's all cycles: show c1 = 0% in that case.
525 */
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]526 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]527 old->c1 = 0;
528 else {
529 /* normal case, derive c1 */
530 old->c1 = old->tsc - old->mperf - core_delta->c3
531 - core_delta->c6 - core_delta->c7;
532 }
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]533
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]534 if (old->mperf == 0) {
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]535 if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]536 old->mperf = 1; /* divide by 0 protection */
537 }
538
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]539 old->extra_delta32 = new->extra_delta32 - old->extra_delta32;
540 old->extra_delta32 &= 0xFFFFFFFF;
541
542 old->extra_delta64 = new->extra_delta64 - old->extra_delta64;
543
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]544 /*
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]545 * Extra MSR is just a snapshot, simply copy latest w/o subtracting
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]546 */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]547 old->extra_msr32 = new->extra_msr32;
548 old->extra_msr64 = new->extra_msr64;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]549}
550
551int delta_cpu(struct thread_data *t, struct core_data *c,
552 struct pkg_data *p, struct thread_data *t2,
553 struct core_data *c2, struct pkg_data *p2)
554{
555 /* calculate core delta only for 1st thread in core */
556 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
557 delta_core(c, c2);
558
559 /* always calculate thread delta */
560 delta_thread(t, t2, c2); /* c2 is core delta */
561
562 /* calculate package delta only for 1st core in package */
563 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
564 delta_package(p, p2);
565
566 return 0;
567}
568
569void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
570{
571 t->tsc = 0;
572 t->aperf = 0;
573 t->mperf = 0;
574 t->c1 = 0;
575
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]576 t->extra_delta32 = 0;
577 t->extra_delta64 = 0;
578
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]579 /* tells format_counters to dump all fields from this set */
580 t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;
581
582 c->c3 = 0;
583 c->c6 = 0;
584 c->c7 = 0;
585
586 p->pc2 = 0;
587 p->pc3 = 0;
588 p->pc6 = 0;
589 p->pc7 = 0;
590}
591int sum_counters(struct thread_data *t, struct core_data *c,
592 struct pkg_data *p)
593{
594 average.threads.tsc += t->tsc;
595 average.threads.aperf += t->aperf;
596 average.threads.mperf += t->mperf;
597 average.threads.c1 += t->c1;
598
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]599 average.threads.extra_delta32 += t->extra_delta32;
600 average.threads.extra_delta64 += t->extra_delta64;
601
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]602 /* sum per-core values only for 1st thread in core */
603 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
604 return 0;
605
606 average.cores.c3 += c->c3;
607 average.cores.c6 += c->c6;
608 average.cores.c7 += c->c7;
609
610 /* sum per-pkg values only for 1st core in pkg */
611 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
612 return 0;
613
614 average.packages.pc2 += p->pc2;
615 average.packages.pc3 += p->pc3;
616 average.packages.pc6 += p->pc6;
617 average.packages.pc7 += p->pc7;
618
619 return 0;
620}
621/*
622 * sum the counters for all cpus in the system
623 * compute the weighted average
624 */
625void compute_average(struct thread_data *t, struct core_data *c,
626 struct pkg_data *p)
627{
628 clear_counters(&average.threads, &average.cores, &average.packages);
629
630 for_all_cpus(sum_counters, t, c, p);
631
632 average.threads.tsc /= topo.num_cpus;
633 average.threads.aperf /= topo.num_cpus;
634 average.threads.mperf /= topo.num_cpus;
635 average.threads.c1 /= topo.num_cpus;
636
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]637 average.threads.extra_delta32 /= topo.num_cpus;
638 average.threads.extra_delta32 &= 0xFFFFFFFF;
639
640 average.threads.extra_delta64 /= topo.num_cpus;
641
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]642 average.cores.c3 /= topo.num_cores;
643 average.cores.c6 /= topo.num_cores;
644 average.cores.c7 /= topo.num_cores;
645
646 average.packages.pc2 /= topo.num_packages;
647 average.packages.pc3 /= topo.num_packages;
648 average.packages.pc6 /= topo.num_packages;
649 average.packages.pc7 /= topo.num_packages;
650}
651
652static unsigned long long rdtsc(void)
653{
654 unsigned int low, high;
655
656 asm volatile("rdtsc" : "=a" (low), "=d" (high));
657
658 return low | ((unsigned long long)high) << 32;
659}
660
661
662/*
663 * get_counters(...)
664 * migrate to cpu
665 * acquire and record local counters for that cpu
666 */
667int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
668{
669 int cpu = t->cpu_id;
670
671 if (cpu_migrate(cpu))
672 return -1;
673
674 t->tsc = rdtsc(); /* we are running on local CPU of interest */
675
676 if (has_aperf) {
677 if (get_msr(cpu, MSR_APERF, &t->aperf))
678 return -3;
679 if (get_msr(cpu, MSR_MPERF, &t->mperf))
680 return -4;
681 }
682
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]683 if (extra_delta_offset32) {
684 if (get_msr(cpu, extra_delta_offset32, &t->extra_delta32))
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]685 return -5;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]686 t->extra_delta32 &= 0xFFFFFFFF;
687 }
688
689 if (extra_delta_offset64)
690 if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))
691 return -5;
692
693 if (extra_msr_offset32) {
694 if (get_msr(cpu, extra_msr_offset32, &t->extra_msr32))
695 return -5;
696 t->extra_msr32 &= 0xFFFFFFFF;
697 }
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]698
699 if (extra_msr_offset64)
700 if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]701 return -5;
702
703 /* collect core counters only for 1st thread in core */
704 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
705 return 0;
706
707 if (do_nhm_cstates) {
708 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
709 return -6;
710 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
711 return -7;
712 }
713
714 if (do_snb_cstates)
715 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
716 return -8;
717
718 /* collect package counters only for 1st core in package */
719 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
720 return 0;
721
722 if (do_nhm_cstates) {
723 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
724 return -9;
725 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
726 return -10;
727 }
728 if (do_snb_cstates) {
729 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
730 return -11;
731 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
732 return -12;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]733 }
734 return 0;
735}
736
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]737void print_verbose_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]738{
739 unsigned long long msr;
740 unsigned int ratio;
741
742 if (!do_nehalem_platform_info)
743 return;
744
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]745 get_msr(0, MSR_NEHALEM_PLATFORM_INFO, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]746
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]747 if (verbose > 1)
748 fprintf(stderr, "MSR_NEHALEM_PLATFORM_INFO: 0x%llx\n", msr);
749
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]750 ratio = (msr >> 40) & 0xFF;
751 fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
752 ratio, bclk, ratio * bclk);
753
754 ratio = (msr >> 8) & 0xFF;
755 fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
756 ratio, bclk, ratio * bclk);
757
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]758 if (!do_ivt_turbo_ratio_limit)
759 goto print_nhm_turbo_ratio_limits;
760
761 get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr);
762
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]763 if (verbose > 1)
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]764 fprintf(stderr, "MSR_IVT_TURBO_RATIO_LIMIT: 0x%llx\n", msr);
765
766 ratio = (msr >> 56) & 0xFF;
767 if (ratio)
768 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 16 active cores\n",
769 ratio, bclk, ratio * bclk);
770
771 ratio = (msr >> 48) & 0xFF;
772 if (ratio)
773 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 15 active cores\n",
774 ratio, bclk, ratio * bclk);
775
776 ratio = (msr >> 40) & 0xFF;
777 if (ratio)
778 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 14 active cores\n",
779 ratio, bclk, ratio * bclk);
780
781 ratio = (msr >> 32) & 0xFF;
782 if (ratio)
783 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 13 active cores\n",
784 ratio, bclk, ratio * bclk);
785
786 ratio = (msr >> 24) & 0xFF;
787 if (ratio)
788 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 12 active cores\n",
789 ratio, bclk, ratio * bclk);
790
791 ratio = (msr >> 16) & 0xFF;
792 if (ratio)
793 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 11 active cores\n",
794 ratio, bclk, ratio * bclk);
795
796 ratio = (msr >> 8) & 0xFF;
797 if (ratio)
798 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 10 active cores\n",
799 ratio, bclk, ratio * bclk);
800
801 ratio = (msr >> 0) & 0xFF;
802 if (ratio)
803 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n",
804 ratio, bclk, ratio * bclk);
805
806print_nhm_turbo_ratio_limits:
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]807
808 if (!do_nehalem_turbo_ratio_limit)
809 return;
810
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]811 get_msr(0, MSR_NEHALEM_TURBO_RATIO_LIMIT, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]812
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]813 if (verbose > 1)
814 fprintf(stderr, "MSR_NEHALEM_TURBO_RATIO_LIMIT: 0x%llx\n", msr);
815
816 ratio = (msr >> 56) & 0xFF;
817 if (ratio)
818 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 8 active cores\n",
819 ratio, bclk, ratio * bclk);
820
821 ratio = (msr >> 48) & 0xFF;
822 if (ratio)
823 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 7 active cores\n",
824 ratio, bclk, ratio * bclk);
825
826 ratio = (msr >> 40) & 0xFF;
827 if (ratio)
828 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 6 active cores\n",
829 ratio, bclk, ratio * bclk);
830
831 ratio = (msr >> 32) & 0xFF;
832 if (ratio)
833 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 5 active cores\n",
834 ratio, bclk, ratio * bclk);
835
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]836 ratio = (msr >> 24) & 0xFF;
837 if (ratio)
838 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
839 ratio, bclk, ratio * bclk);
840
841 ratio = (msr >> 16) & 0xFF;
842 if (ratio)
843 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
844 ratio, bclk, ratio * bclk);
845
846 ratio = (msr >> 8) & 0xFF;
847 if (ratio)
848 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
849 ratio, bclk, ratio * bclk);
850
851 ratio = (msr >> 0) & 0xFF;
852 if (ratio)
853 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
854 ratio, bclk, ratio * bclk);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]855}
856
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]857void free_all_buffers(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]858{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]859 CPU_FREE(cpu_present_set);
860 cpu_present_set = NULL;
861 cpu_present_set = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]862
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]863 CPU_FREE(cpu_affinity_set);
864 cpu_affinity_set = NULL;
865 cpu_affinity_setsize = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]866
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]867 free(thread_even);
868 free(core_even);
869 free(package_even);
870
871 thread_even = NULL;
872 core_even = NULL;
873 package_even = NULL;
874
875 free(thread_odd);
876 free(core_odd);
877 free(package_odd);
878
879 thread_odd = NULL;
880 core_odd = NULL;
881 package_odd = NULL;
882
883 free(output_buffer);
884 output_buffer = NULL;
885 outp = NULL;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]886}
887
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]888/*
889 * cpu_is_first_sibling_in_core(cpu)
890 * return 1 if given CPU is 1st HT sibling in the core
891 */
892int cpu_is_first_sibling_in_core(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]893{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]894 char path[64];
895 FILE *filep;
896 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]897
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]898 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
899 filep = fopen(path, "r");
900 if (filep == NULL) {
901 perror(path);
902 exit(1);
903 }
904 fscanf(filep, "%d", &first_cpu);
905 fclose(filep);
906 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]907}
908
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]909/*
910 * cpu_is_first_core_in_package(cpu)
911 * return 1 if given CPU is 1st core in package
912 */
913int cpu_is_first_core_in_package(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]914{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]915 char path[64];
916 FILE *filep;
917 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]918
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]919 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
920 filep = fopen(path, "r");
921 if (filep == NULL) {
922 perror(path);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]923 exit(1);
924 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]925 fscanf(filep, "%d", &first_cpu);
926 fclose(filep);
927 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]928}
929
930int get_physical_package_id(int cpu)
931{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]932 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]933 FILE *filep;
934 int pkg;
935
936 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
937 filep = fopen(path, "r");
938 if (filep == NULL) {
939 perror(path);
940 exit(1);
941 }
942 fscanf(filep, "%d", &pkg);
943 fclose(filep);
944 return pkg;
945}
946
947int get_core_id(int cpu)
948{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]949 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]950 FILE *filep;
951 int core;
952
953 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
954 filep = fopen(path, "r");
955 if (filep == NULL) {
956 perror(path);
957 exit(1);
958 }
959 fscanf(filep, "%d", &core);
960 fclose(filep);
961 return core;
962}
963
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]964int get_num_ht_siblings(int cpu)
965{
966 char path[80];
967 FILE *filep;
968 int sib1, sib2;
969 int matches;
970 char character;
971
972 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
973 filep = fopen(path, "r");
974 if (filep == NULL) {
975 perror(path);
976 exit(1);
977 }
978 /*
979 * file format:
980 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
981 * otherwinse 1 sibling (self).
982 */
983 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
984
985 fclose(filep);
986
987 if (matches == 3)
988 return 2;
989 else
990 return 1;
991}
992
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]993/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]994 * run func(thread, core, package) in topology order
995 * skip non-present cpus
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]996 */
997
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]998int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
999 struct pkg_data *, struct thread_data *, struct core_data *,
1000 struct pkg_data *), struct thread_data *thread_base,
1001 struct core_data *core_base, struct pkg_data *pkg_base,
1002 struct thread_data *thread_base2, struct core_data *core_base2,
1003 struct pkg_data *pkg_base2)
1004{
1005 int retval, pkg_no, core_no, thread_no;
1006
1007 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
1008 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
1009 for (thread_no = 0; thread_no <
1010 topo.num_threads_per_core; ++thread_no) {
1011 struct thread_data *t, *t2;
1012 struct core_data *c, *c2;
1013 struct pkg_data *p, *p2;
1014
1015 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
1016
1017 if (cpu_is_not_present(t->cpu_id))
1018 continue;
1019
1020 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
1021
1022 c = GET_CORE(core_base, core_no, pkg_no);
1023 c2 = GET_CORE(core_base2, core_no, pkg_no);
1024
1025 p = GET_PKG(pkg_base, pkg_no);
1026 p2 = GET_PKG(pkg_base2, pkg_no);
1027
1028 retval = func(t, c, p, t2, c2, p2);
1029 if (retval)
1030 return retval;
1031 }
1032 }
1033 }
1034 return 0;
1035}
1036
1037/*
1038 * run func(cpu) on every cpu in /proc/stat
1039 * return max_cpu number
1040 */
1041int for_all_proc_cpus(int (func)(int))
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1042{
1043 FILE *fp;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1044 int cpu_num;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1045 int retval;
1046
1047 fp = fopen(proc_stat, "r");
1048 if (fp == NULL) {
1049 perror(proc_stat);
1050 exit(1);
1051 }
1052
1053 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
1054 if (retval != 0) {
1055 perror("/proc/stat format");
1056 exit(1);
1057 }
1058
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1059 while (1) {
1060 retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1061 if (retval != 1)
1062 break;
1063
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1064 retval = func(cpu_num);
1065 if (retval) {
1066 fclose(fp);
1067 return(retval);
1068 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1069 }
1070 fclose(fp);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1071 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1072}
1073
1074void re_initialize(void)
1075{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1076 free_all_buffers();
1077 setup_all_buffers();
1078 printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1079}
1080
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1081
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1082/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1083 * count_cpus()
1084 * remember the last one seen, it will be the max
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1085 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1086int count_cpus(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1087{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1088 if (topo.max_cpu_num < cpu)
1089 topo.max_cpu_num = cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1090
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1091 topo.num_cpus += 1;
1092 return 0;
1093}
1094int mark_cpu_present(int cpu)
1095{
1096 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1097 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1098}
1099
1100void turbostat_loop()
1101{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1102 int retval;
1103
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1104restart:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1105 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1106 if (retval < -1) {
1107 exit(retval);
1108 } else if (retval == -1) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1109 re_initialize();
1110 goto restart;
1111 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1112 gettimeofday(&tv_even, (struct timezone *)NULL);
1113
1114 while (1) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1115 if (for_all_proc_cpus(cpu_is_not_present)) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1116 re_initialize();
1117 goto restart;
1118 }
1119 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1120 retval = for_all_cpus(get_counters, ODD_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1121 if (retval < -1) {
1122 exit(retval);
1123 } else if (retval == -1) {
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1124 re_initialize();
1125 goto restart;
1126 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1127 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1128 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1129 for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
1130 compute_average(EVEN_COUNTERS);
1131 format_all_counters(EVEN_COUNTERS);
1132 flush_stdout();
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1133 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1134 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1135 if (retval < -1) {
1136 exit(retval);
1137 } else if (retval == -1) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1138 re_initialize();
1139 goto restart;
1140 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1141 gettimeofday(&tv_even, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1142 timersub(&tv_even, &tv_odd, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1143 for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
1144 compute_average(ODD_COUNTERS);
1145 format_all_counters(ODD_COUNTERS);
1146 flush_stdout();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1147 }
1148}
1149
1150void check_dev_msr()
1151{
1152 struct stat sb;
1153
1154 if (stat("/dev/cpu/0/msr", &sb)) {
1155 fprintf(stderr, "no /dev/cpu/0/msr\n");
1156 fprintf(stderr, "Try \"# modprobe msr\"\n");
1157 exit(-5);
1158 }
1159}
1160
1161void check_super_user()
1162{
1163 if (getuid() != 0) {
1164 fprintf(stderr, "must be root\n");
1165 exit(-6);
1166 }
1167}
1168
1169int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model)
1170{
1171 if (!genuine_intel)
1172 return 0;
1173
1174 if (family != 6)
1175 return 0;
1176
1177 switch (model) {
1178 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1179 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1180 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1181 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1182 case 0x2C: /* Westmere EP - Gulftown */
1183 case 0x2A: /* SNB */
1184 case 0x2D: /* SNB Xeon */
Len Brown553575f2011-11-18 03:32:01 -0500[diff] [blame]1185 case 0x3A: /* IVB */
Len Brown13006512012-09-26 18:11:31 -0400[diff] [blame]1186 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1187 return 1;
1188 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1189 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1190 default:
1191 return 0;
1192 }
1193}
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1194int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model)
1195{
1196 if (!genuine_intel)
1197 return 0;
1198
1199 if (family != 6)
1200 return 0;
1201
1202 switch (model) {
1203 case 0x3E: /* IVB Xeon */
1204 return 1;
1205 default:
1206 return 0;
1207 }
1208}
1209
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1210
1211int is_snb(unsigned int family, unsigned int model)
1212{
1213 if (!genuine_intel)
1214 return 0;
1215
1216 switch (model) {
1217 case 0x2A:
1218 case 0x2D:
Len Brown650a37f2012-06-03 23:34:44 -0400[diff] [blame]1219 case 0x3A: /* IVB */
Len Brown13006512012-09-26 18:11:31 -0400[diff] [blame]1220 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1221 return 1;
1222 }
1223 return 0;
1224}
1225
1226double discover_bclk(unsigned int family, unsigned int model)
1227{
1228 if (is_snb(family, model))
1229 return 100.00;
1230 else
1231 return 133.33;
1232}
1233
1234void check_cpuid()
1235{
1236 unsigned int eax, ebx, ecx, edx, max_level;
1237 unsigned int fms, family, model, stepping;
1238
1239 eax = ebx = ecx = edx = 0;
1240
1241 asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0));
1242
1243 if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1244 genuine_intel = 1;
1245
1246 if (verbose)
1247 fprintf(stderr, "%.4s%.4s%.4s ",
1248 (char *)&ebx, (char *)&edx, (char *)&ecx);
1249
1250 asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
1251 family = (fms >> 8) & 0xf;
1252 model = (fms >> 4) & 0xf;
1253 stepping = fms & 0xf;
1254 if (family == 6 || family == 0xf)
1255 model += ((fms >> 16) & 0xf) << 4;
1256
1257 if (verbose)
1258 fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
1259 max_level, family, model, stepping, family, model, stepping);
1260
1261 if (!(edx & (1 << 5))) {
1262 fprintf(stderr, "CPUID: no MSR\n");
1263 exit(1);
1264 }
1265
1266 /*
1267 * check max extended function levels of CPUID.
1268 * This is needed to check for invariant TSC.
1269 * This check is valid for both Intel and AMD.
1270 */
1271 ebx = ecx = edx = 0;
1272 asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000));
1273
1274 if (max_level < 0x80000007) {
1275 fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level);
1276 exit(1);
1277 }
1278
1279 /*
1280 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1281 * this check is valid for both Intel and AMD
1282 */
1283 asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1284 has_invariant_tsc = edx & (1 << 8);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1285
1286 if (!has_invariant_tsc) {
1287 fprintf(stderr, "No invariant TSC\n");
1288 exit(1);
1289 }
1290
1291 /*
1292 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1293 * this check is valid for both Intel and AMD
1294 */
1295
1296 asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1297 has_aperf = ecx & (1 << 0);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1298 if (!has_aperf) {
1299 fprintf(stderr, "No APERF MSR\n");
1300 exit(1);
1301 }
1302
1303 do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
1304 do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1305 do_snb_cstates = is_snb(family, model);
1306 bclk = discover_bclk(family, model);
1307
1308 do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1309 do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1310}
1311
1312
1313void usage()
1314{
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1315 fprintf(stderr, "%s: [-v][-p|-P|-S][-c MSR# | -s]][-C MSR#][-m MSR#][-M MSR#][-i interval_sec | command ...]\n",
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1316 progname);
1317 exit(1);
1318}
1319
1320
1321/*
1322 * in /dev/cpu/ return success for names that are numbers
1323 * ie. filter out ".", "..", "microcode".
1324 */
1325int dir_filter(const struct dirent *dirp)
1326{
1327 if (isdigit(dirp->d_name[0]))
1328 return 1;
1329 else
1330 return 0;
1331}
1332
1333int open_dev_cpu_msr(int dummy1)
1334{
1335 return 0;
1336}
1337
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1338void topology_probe()
1339{
1340 int i;
1341 int max_core_id = 0;
1342 int max_package_id = 0;
1343 int max_siblings = 0;
1344 struct cpu_topology {
1345 int core_id;
1346 int physical_package_id;
1347 } *cpus;
1348
1349 /* Initialize num_cpus, max_cpu_num */
1350 topo.num_cpus = 0;
1351 topo.max_cpu_num = 0;
1352 for_all_proc_cpus(count_cpus);
1353 if (!summary_only && topo.num_cpus > 1)
1354 show_cpu = 1;
1355
1356 if (verbose > 1)
1357 fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1358
1359 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1360 if (cpus == NULL) {
1361 perror("calloc cpus");
1362 exit(1);
1363 }
1364
1365 /*
1366 * Allocate and initialize cpu_present_set
1367 */
1368 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1369 if (cpu_present_set == NULL) {
1370 perror("CPU_ALLOC");
1371 exit(3);
1372 }
1373 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1374 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1375 for_all_proc_cpus(mark_cpu_present);
1376
1377 /*
1378 * Allocate and initialize cpu_affinity_set
1379 */
1380 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1381 if (cpu_affinity_set == NULL) {
1382 perror("CPU_ALLOC");
1383 exit(3);
1384 }
1385 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1386 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1387
1388
1389 /*
1390 * For online cpus
1391 * find max_core_id, max_package_id
1392 */
1393 for (i = 0; i <= topo.max_cpu_num; ++i) {
1394 int siblings;
1395
1396 if (cpu_is_not_present(i)) {
1397 if (verbose > 1)
1398 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1399 continue;
1400 }
1401 cpus[i].core_id = get_core_id(i);
1402 if (cpus[i].core_id > max_core_id)
1403 max_core_id = cpus[i].core_id;
1404
1405 cpus[i].physical_package_id = get_physical_package_id(i);
1406 if (cpus[i].physical_package_id > max_package_id)
1407 max_package_id = cpus[i].physical_package_id;
1408
1409 siblings = get_num_ht_siblings(i);
1410 if (siblings > max_siblings)
1411 max_siblings = siblings;
1412 if (verbose > 1)
1413 fprintf(stderr, "cpu %d pkg %d core %d\n",
1414 i, cpus[i].physical_package_id, cpus[i].core_id);
1415 }
1416 topo.num_cores_per_pkg = max_core_id + 1;
1417 if (verbose > 1)
1418 fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
1419 max_core_id, topo.num_cores_per_pkg);
1420 if (!summary_only && topo.num_cores_per_pkg > 1)
1421 show_core = 1;
1422
1423 topo.num_packages = max_package_id + 1;
1424 if (verbose > 1)
1425 fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
1426 max_package_id, topo.num_packages);
1427 if (!summary_only && topo.num_packages > 1)
1428 show_pkg = 1;
1429
1430 topo.num_threads_per_core = max_siblings;
1431 if (verbose > 1)
1432 fprintf(stderr, "max_siblings %d\n", max_siblings);
1433
1434 free(cpus);
1435}
1436
1437void
1438allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1439{
1440 int i;
1441
1442 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1443 topo.num_packages, sizeof(struct thread_data));
1444 if (*t == NULL)
1445 goto error;
1446
1447 for (i = 0; i < topo.num_threads_per_core *
1448 topo.num_cores_per_pkg * topo.num_packages; i++)
1449 (*t)[i].cpu_id = -1;
1450
1451 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1452 sizeof(struct core_data));
1453 if (*c == NULL)
1454 goto error;
1455
1456 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1457 (*c)[i].core_id = -1;
1458
1459 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1460 if (*p == NULL)
1461 goto error;
1462
1463 for (i = 0; i < topo.num_packages; i++)
1464 (*p)[i].package_id = i;
1465
1466 return;
1467error:
1468 perror("calloc counters");
1469 exit(1);
1470}
1471/*
1472 * init_counter()
1473 *
1474 * set cpu_id, core_num, pkg_num
1475 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1476 *
1477 * increment topo.num_cores when 1st core in pkg seen
1478 */
1479void init_counter(struct thread_data *thread_base, struct core_data *core_base,
1480 struct pkg_data *pkg_base, int thread_num, int core_num,
1481 int pkg_num, int cpu_id)
1482{
1483 struct thread_data *t;
1484 struct core_data *c;
1485 struct pkg_data *p;
1486
1487 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1488 c = GET_CORE(core_base, core_num, pkg_num);
1489 p = GET_PKG(pkg_base, pkg_num);
1490
1491 t->cpu_id = cpu_id;
1492 if (thread_num == 0) {
1493 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1494 if (cpu_is_first_core_in_package(cpu_id))
1495 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1496 }
1497
1498 c->core_id = core_num;
1499 p->package_id = pkg_num;
1500}
1501
1502
1503int initialize_counters(int cpu_id)
1504{
1505 int my_thread_id, my_core_id, my_package_id;
1506
1507 my_package_id = get_physical_package_id(cpu_id);
1508 my_core_id = get_core_id(cpu_id);
1509
1510 if (cpu_is_first_sibling_in_core(cpu_id)) {
1511 my_thread_id = 0;
1512 topo.num_cores++;
1513 } else {
1514 my_thread_id = 1;
1515 }
1516
1517 init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1518 init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1519 return 0;
1520}
1521
1522void allocate_output_buffer()
1523{
1524 output_buffer = calloc(1, (1 + topo.num_cpus) * 128);
1525 outp = output_buffer;
1526 if (outp == NULL) {
1527 perror("calloc");
1528 exit(-1);
1529 }
1530}
1531
1532void setup_all_buffers(void)
1533{
1534 topology_probe();
1535 allocate_counters(&thread_even, &core_even, &package_even);
1536 allocate_counters(&thread_odd, &core_odd, &package_odd);
1537 allocate_output_buffer();
1538 for_all_proc_cpus(initialize_counters);
1539}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1540void turbostat_init()
1541{
1542 check_cpuid();
1543
1544 check_dev_msr();
1545 check_super_user();
1546
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1547 setup_all_buffers();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1548
1549 if (verbose)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1550 print_verbose_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1551}
1552
1553int fork_it(char **argv)
1554{
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1555 pid_t child_pid;
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1556 int status;
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]1557
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1558 status = for_all_cpus(get_counters, EVEN_COUNTERS);
1559 if (status)
1560 exit(status);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1561 /* clear affinity side-effect of get_counters() */
1562 sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1563 gettimeofday(&tv_even, (struct timezone *)NULL);
1564
1565 child_pid = fork();
1566 if (!child_pid) {
1567 /* child */
1568 execvp(argv[0], argv);
1569 } else {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1570
1571 /* parent */
1572 if (child_pid == -1) {
1573 perror("fork");
1574 exit(1);
1575 }
1576
1577 signal(SIGINT, SIG_IGN);
1578 signal(SIGQUIT, SIG_IGN);
1579 if (waitpid(child_pid, &status, 0) == -1) {
1580 perror("wait");
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1581 exit(status);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1582 }
1583 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1584 /*
1585 * n.b. fork_it() does not check for errors from for_all_cpus()
1586 * because re-starting is problematic when forking
1587 */
1588 for_all_cpus(get_counters, ODD_COUNTERS);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1589 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1590 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1591 for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
1592 compute_average(EVEN_COUNTERS);
1593 format_all_counters(EVEN_COUNTERS);
1594 flush_stderr();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1595
Justin P. Mattock6eab04a2011-04-08 19:49:08 -0700[diff] [blame]1596 fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1597
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1598 return status;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1599}
1600
1601void cmdline(int argc, char **argv)
1602{
1603 int opt;
1604
1605 progname = argv[0];
1606
Len Brown39300ff2012-11-01 00:16:34 -0400[diff] [blame]1607 while ((opt = getopt(argc, argv, "+pPSvi:sc:sC:m:M:")) != -1) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1608 switch (opt) {
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1609 case 'p':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1610 show_core_only++;
1611 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1612 case 'P':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1613 show_pkg_only++;
1614 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1615 case 'S':
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]1616 summary_only++;
1617 break;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1618 case 'v':
1619 verbose++;
1620 break;
1621 case 'i':
1622 interval_sec = atoi(optarg);
1623 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1624 case 'c':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1625 sscanf(optarg, "%x", &extra_delta_offset32);
1626 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1627 case 's':
1628 extra_delta_offset32 = 0x34; /* SMI counter */
1629 break;
1630 case 'C':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1631 sscanf(optarg, "%x", &extra_delta_offset64);
1632 break;
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1633 case 'm':
1634 sscanf(optarg, "%x", &extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1635 break;
1636 case 'M':
1637 sscanf(optarg, "%x", &extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1638 break;
1639 default:
1640 usage();
1641 }
1642 }
1643}
1644
1645int main(int argc, char **argv)
1646{
1647 cmdline(argc, argv);
1648
1649 if (verbose > 1)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1650 fprintf(stderr, "turbostat v2.1 October 6, 2012"
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1651 " - Len Brown <lenb@kernel.org>\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1652
1653 turbostat_init();
1654
1655 /*
1656 * if any params left, it must be a command to fork
1657 */
1658 if (argc - optind)
1659 return fork_it(argv + optind);
1660 else
1661 turbostat_loop();
1662
1663 return 0;
1664}