Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-5.4 / 3d6ee36dfb2d40c72071f68173f67c728a0e19f3 / . / tools / power / x86 / turbostat / turbostat.c
blob: 2655ae9a3ad8d9e6f7676006336a5e3b8fec99d1 [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
209 if (retval != sizeof *msr)
210 return -1;
211
212 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]213}
214
Len Browna829eb42011-02-10 23:36:34 -0500[diff] [blame]215void print_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]216{
217 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]218 outp += sprintf(outp, "pk");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]219 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]220 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]221 if (show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]222 outp += sprintf(outp, "cor");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]223 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]224 outp += sprintf(outp, " CPU");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]225 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]226 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]227 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]228 outp += sprintf(outp, " %%c0");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]229 if (has_aperf)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]230 outp += sprintf(outp, " GHz");
231 outp += sprintf(outp, " TSC");
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]232 if (extra_delta_offset32)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]233 outp += sprintf(outp, " count 0x%03X", extra_delta_offset32);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]234 if (extra_delta_offset64)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]235 outp += sprintf(outp, " COUNT 0x%03X", extra_delta_offset64);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]236 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]237 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]238 if (extra_msr_offset64)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]239 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]240 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]241 outp += sprintf(outp, " %%c1");
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, " %%c3");
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, " %%c6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]246 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]247 outp += sprintf(outp, " %%c7");
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, " %%pc2");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]250 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]251 outp += sprintf(outp, " %%pc3");
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, " %%pc6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]254 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]255 outp += sprintf(outp, " %%pc7");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]256
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]257 outp += sprintf(outp, "\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]258}
259
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]260int dump_counters(struct thread_data *t, struct core_data *c,
261 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]262{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]263 fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]264
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]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",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]276 extra_msr_offset32, t->extra_msr32);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]277 fprintf(stderr, "msr0x%x: %016llX\n",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]278 extra_msr_offset64, t->extra_msr64);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]279 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]280
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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 }
287
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;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]296}
297
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]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 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]307int format_counters(struct thread_data *t, struct core_data *c,
308 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]309{
310 double interval_float;
311
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]320 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
321
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]322 /* topo columns, print blanks on 1st (average) line */
323 if (t == &average.threads) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]324 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]325 outp += sprintf(outp, " ");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]326 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]327 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]328 if (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_cpu)
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 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]333 if (show_pkg) {
334 if (p)
335 outp += sprintf(outp, "%2d", p->package_id);
336 else
337 outp += sprintf(outp, " ");
338 }
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]339 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]347 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]348 outp += sprintf(outp, " %3d", t->cpu_id);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]349 }
350
351 /* %c0 */
352 if (do_nhm_cstates) {
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]353 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]354 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]355 if (!skip_c0)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]356 outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]357 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]358 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]359 }
360
361 /* GHz */
362 if (has_aperf) {
363 if (!aperf_mperf_unstable) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]364 outp += sprintf(outp, " %3.2f",
365 1.0 * t->tsc / units * t->aperf /
366 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]367 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]368 if (t->aperf > t->tsc || t->mperf > t->tsc) {
369 outp += sprintf(outp, " ***");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]370 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]371 outp += sprintf(outp, "%3.1f*",
372 1.0 * t->tsc /
373 units * t->aperf /
374 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]375 }
376 }
377 }
378
379 /* TSC */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]380 outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]381
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]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);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]389 /* msr */
390 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]391 outp += sprintf(outp, " 0x%08llx", t->extra_msr32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]392
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]393 /* MSR */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]394 if (extra_msr_offset64)
395 outp += sprintf(outp, " 0x%016llx", t->extra_msr64);
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]396
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]397 if (do_nhm_cstates) {
398 if (!skip_c1)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]399 outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]400 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]401 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]402 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]408 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]409 outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
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->c6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]412 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]419 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]420 outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]421 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]422 outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/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->pc6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]425 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]426 outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
427done:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]428 outp += sprintf(outp, "\n");
429
430 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]431}
432
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]433void flush_stdout()
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]434{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]435 fputs(output_buffer, stdout);
436 outp = output_buffer;
437}
438void flush_stderr()
439{
440 fputs(output_buffer, stderr);
441 outp = output_buffer;
442}
443void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
444{
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]445 static int printed;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]446
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]447 if (!printed || !summary_only)
448 print_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]449
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]450 if (topo.num_cpus > 1)
451 format_counters(&average.threads, &average.cores,
452 &average.packages);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]453
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]454 printed = 1;
455
456 if (summary_only)
457 return;
458
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]459 for_all_cpus(format_counters, t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]460}
461
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]462void
463delta_package(struct pkg_data *new, struct pkg_data *old)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]464{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]470
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]471void
472delta_core(struct core_data *new, struct core_data *old)
473{
474 old->c3 = new->c3 - old->c3;
475 old->c6 = new->c6 - old->c6;
476 old->c7 = new->c7 - old->c7;
477}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]478
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]479/*
480 * old = new - old
481 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]482void
483delta_thread(struct thread_data *new, struct thread_data *old,
484 struct core_data *core_delta)
485{
486 old->tsc = new->tsc - old->tsc;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]487
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]495
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]496 old->c1 = new->c1 - old->c1;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]497
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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 {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]502
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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");
507
508 aperf_mperf_unstable = 1;
509 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]510 /*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]511 * mperf delta is likely a huge "positive" number
512 * can not use it for calculating c0 time
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]513 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]514 skip_c0 = 1;
515 skip_c1 = 1;
516 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]517
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]518
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]519 /*
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]520 * As counter collection is not atomic,
521 * it is possible for mperf's non-halted cycles + idle states
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]522 * to exceed TSC's all cycles: show c1 = 0% in that case.
523 */
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]524 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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 }
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]531
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]532 if (old->mperf == 0) {
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]533 if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]534 old->mperf = 1; /* divide by 0 protection */
535 }
536
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]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
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]542 /*
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]543 * Extra MSR is just a snapshot, simply copy latest w/o subtracting
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]544 */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]545 old->extra_msr32 = new->extra_msr32;
546 old->extra_msr64 = new->extra_msr64;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]547}
548
549int 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
564 return 0;
565}
566
567void 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
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]574 t->extra_delta32 = 0;
575 t->extra_delta64 = 0;
576
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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}
589int sum_counters(struct thread_data *t, struct core_data *c,
590 struct pkg_data *p)
591{
592 average.threads.tsc += t->tsc;
593 average.threads.aperf += t->aperf;
594 average.threads.mperf += t->mperf;
595 average.threads.c1 += t->c1;
596
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]597 average.threads.extra_delta32 += t->extra_delta32;
598 average.threads.extra_delta64 += t->extra_delta64;
599
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]600 /* sum per-core values only for 1st thread in core */
601 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
602 return 0;
603
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 */
623void 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
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]635 average.threads.extra_delta32 /= topo.num_cpus;
636 average.threads.extra_delta32 &= 0xFFFFFFFF;
637
638 average.threads.extra_delta64 /= topo.num_cpus;
639
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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;
648}
649
650static unsigned long long rdtsc(void)
651{
652 unsigned int low, high;
653
654 asm volatile("rdtsc" : "=a" (low), "=d" (high));
655
656 return low | ((unsigned long long)high) << 32;
657}
658
659
660/*
661 * get_counters(...)
662 * migrate to cpu
663 * acquire and record local counters for that cpu
664 */
665int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
666{
667 int cpu = t->cpu_id;
668
669 if (cpu_migrate(cpu))
670 return -1;
671
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
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]681 if (extra_delta_offset32) {
682 if (get_msr(cpu, extra_delta_offset32, &t->extra_delta32))
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]683 return -5;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]684 t->extra_delta32 &= 0xFFFFFFFF;
685 }
686
687 if (extra_delta_offset64)
688 if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))
689 return -5;
690
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 }
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]696
697 if (extra_msr_offset64)
698 if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]731 }
732 return 0;
733}
734
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]735void print_verbose_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]736{
737 unsigned long long msr;
738 unsigned int ratio;
739
740 if (!do_nehalem_platform_info)
741 return;
742
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]743 get_msr(0, MSR_NEHALEM_PLATFORM_INFO, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]744
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]745 if (verbose > 1)
746 fprintf(stderr, "MSR_NEHALEM_PLATFORM_INFO: 0x%llx\n", msr);
747
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]761 if (verbose > 1)
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]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
804print_nhm_turbo_ratio_limits:
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]805
806 if (!do_nehalem_turbo_ratio_limit)
807 return;
808
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]809 get_msr(0, MSR_NEHALEM_TURBO_RATIO_LIMIT, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]810
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]853}
854
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]855void free_all_buffers(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]856{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]857 CPU_FREE(cpu_present_set);
858 cpu_present_set = NULL;
859 cpu_present_set = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]860
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]861 CPU_FREE(cpu_affinity_set);
862 cpu_affinity_set = NULL;
863 cpu_affinity_setsize = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]864
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]865 free(thread_even);
866 free(core_even);
867 free(package_even);
868
869 thread_even = NULL;
870 core_even = NULL;
871 package_even = NULL;
872
873 free(thread_odd);
874 free(core_odd);
875 free(package_odd);
876
877 thread_odd = NULL;
878 core_odd = NULL;
879 package_odd = NULL;
880
881 free(output_buffer);
882 output_buffer = NULL;
883 outp = NULL;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]884}
885
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]886/*
887 * cpu_is_first_sibling_in_core(cpu)
888 * return 1 if given CPU is 1st HT sibling in the core
889 */
890int cpu_is_first_sibling_in_core(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]891{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]892 char path[64];
893 FILE *filep;
894 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]895
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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);
901 }
902 fscanf(filep, "%d", &first_cpu);
903 fclose(filep);
904 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]905}
906
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]907/*
908 * cpu_is_first_core_in_package(cpu)
909 * return 1 if given CPU is 1st core in package
910 */
911int cpu_is_first_core_in_package(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]912{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]913 char path[64];
914 FILE *filep;
915 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]916
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]921 exit(1);
922 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]923 fscanf(filep, "%d", &first_cpu);
924 fclose(filep);
925 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]926}
927
928int get_physical_package_id(int cpu)
929{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]930 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
945int get_core_id(int cpu)
946{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]947 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]962int 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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]991/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]992 * run func(thread, core, package) in topology order
993 * skip non-present cpus
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]994 */
995
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]996int 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 */
1039int for_all_proc_cpus(int (func)(int))
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1040{
1041 FILE *fp;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1042 int cpu_num;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1057 while (1) {
1058 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]1059 if (retval != 1)
1060 break;
1061
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1062 retval = func(cpu_num);
1063 if (retval) {
1064 fclose(fp);
1065 return(retval);
1066 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1067 }
1068 fclose(fp);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1069 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1070}
1071
1072void re_initialize(void)
1073{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1074 free_all_buffers();
1075 setup_all_buffers();
1076 printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1077}
1078
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1079
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1080/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1081 * count_cpus()
1082 * remember the last one seen, it will be the max
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1083 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1084int count_cpus(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1085{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1086 if (topo.max_cpu_num < cpu)
1087 topo.max_cpu_num = cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1088
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1089 topo.num_cpus += 1;
1090 return 0;
1091}
1092int mark_cpu_present(int cpu)
1093{
1094 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1095 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1096}
1097
1098void turbostat_loop()
1099{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1100 int retval;
1101
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1102restart:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1103 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1104 if (retval) {
1105 re_initialize();
1106 goto restart;
1107 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1108 gettimeofday(&tv_even, (struct timezone *)NULL);
1109
1110 while (1) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1111 if (for_all_proc_cpus(cpu_is_not_present)) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1112 re_initialize();
1113 goto restart;
1114 }
1115 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1116 retval = for_all_cpus(get_counters, ODD_COUNTERS);
1117 if (retval) {
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1118 re_initialize();
1119 goto restart;
1120 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1121 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1122 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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();
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1127 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1128 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
1129 if (retval) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1130 re_initialize();
1131 goto restart;
1132 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1133 gettimeofday(&tv_even, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1134 timersub(&tv_even, &tv_odd, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1139 }
1140}
1141
1142void 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
1153void check_super_user()
1154{
1155 if (getuid() != 0) {
1156 fprintf(stderr, "must be root\n");
1157 exit(-6);
1158 }
1159}
1160
1161int 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 */
Len Brown553575f2011-11-18 03:32:01 -0500[diff] [blame]1177 case 0x3A: /* IVB */
Len Brown13006512012-09-26 18:11:31 -0400[diff] [blame]1178 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1179 return 1;
1180 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1181 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1182 default:
1183 return 0;
1184 }
1185}
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1186int 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
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1202
1203int 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:
Len Brown650a37f2012-06-03 23:34:44 -0400[diff] [blame]1211 case 0x3A: /* IVB */
Len Brown13006512012-09-26 18:11:31 -0400[diff] [blame]1212 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1213 return 1;
1214 }
1215 return 0;
1216}
1217
1218double 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
1226void 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));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1276 has_invariant_tsc = edx & (1 << 8);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1289 has_aperf = ecx & (1 << 0);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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);
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1301 do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1302}
1303
1304
1305void usage()
1306{
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1307 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]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 */
1317int dir_filter(const struct dirent *dirp)
1318{
1319 if (isdigit(dirp->d_name[0]))
1320 return 1;
1321 else
1322 return 0;
1323}
1324
1325int open_dev_cpu_msr(int dummy1)
1326{
1327 return 0;
1328}
1329
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1330void 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
1429void
1430allocate_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;
1459error:
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 */
1471void 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
1495int 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
1514void 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
1524void 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}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1532void turbostat_init()
1533{
1534 check_cpuid();
1535
1536 check_dev_msr();
1537 check_super_user();
1538
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1539 setup_all_buffers();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1540
1541 if (verbose)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1542 print_verbose_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1543}
1544
1545int fork_it(char **argv)
1546{
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1547 pid_t child_pid;
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]1548
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]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 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1579 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1580 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]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();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1585
Justin P. Mattock6eab04a2011-04-08 19:49:08 -0700[diff] [blame]1586 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]1587
1588 return 0;
1589}
1590
1591void cmdline(int argc, char **argv)
1592{
1593 int opt;
1594
1595 progname = argv[0];
1596
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1597 while ((opt = getopt(argc, argv, "+pPSvisc:sC:m:M:")) != -1) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1598 switch (opt) {
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1599 case 'p':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1600 show_core_only++;
1601 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1602 case 'P':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1603 show_pkg_only++;
1604 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1605 case 'S':
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]1606 summary_only++;
1607 break;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1608 case 'v':
1609 verbose++;
1610 break;
1611 case 'i':
1612 interval_sec = atoi(optarg);
1613 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1614 case 'c':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1615 sscanf(optarg, "%x", &extra_delta_offset32);
1616 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1617 case 's':
1618 extra_delta_offset32 = 0x34; /* SMI counter */
1619 break;
1620 case 'C':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1621 sscanf(optarg, "%x", &extra_delta_offset64);
1622 break;
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1623 case 'm':
1624 sscanf(optarg, "%x", &extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1625 break;
1626 case 'M':
1627 sscanf(optarg, "%x", &extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1628 break;
1629 default:
1630 usage();
1631 }
1632 }
1633}
1634
1635int main(int argc, char **argv)
1636{
1637 cmdline(argc, argv);
1638
1639 if (verbose > 1)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1640 fprintf(stderr, "turbostat v2.1 October 6, 2012"
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1641 " - Len Brown <lenb@kernel.org>\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1642
1643 turbostat_init();
1644
1645 /*
1646 * if any params left, it must be a command to fork
1647 */
1648 if (argc - optind)
1649 return fork_it(argv + optind);
1650 else
1651 turbostat_loop();
1652
1653 return 0;
1654}