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review.linaro.org / kernel / linux-linaro-stable.git / 3fc808aaa052dec7b155f3242c6c0eabf0c49127 / . / tools / power / x86 / turbostat / turbostat.c
blob: 3c063a00f3bf46f214b94fb8e5c30d525cb6dfe7 [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 Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]23#include <asm/msr.h>
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]24#include <stdio.h>
25#include <unistd.h>
26#include <sys/types.h>
27#include <sys/wait.h>
28#include <sys/stat.h>
29#include <sys/resource.h>
30#include <fcntl.h>
31#include <signal.h>
32#include <sys/time.h>
33#include <stdlib.h>
34#include <dirent.h>
35#include <string.h>
36#include <ctype.h>
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]37#include <sched.h>
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]38
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]39char *proc_stat = "/proc/stat";
40unsigned int interval_sec = 5; /* set with -i interval_sec */
41unsigned int verbose; /* set with -v */
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]42unsigned int summary_only; /* set with -s */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]43unsigned int skip_c0;
44unsigned int skip_c1;
45unsigned int do_nhm_cstates;
46unsigned int do_snb_cstates;
47unsigned int has_aperf;
48unsigned int units = 1000000000; /* Ghz etc */
49unsigned int genuine_intel;
50unsigned int has_invariant_tsc;
51unsigned int do_nehalem_platform_info;
52unsigned int do_nehalem_turbo_ratio_limit;
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]53unsigned int do_ivt_turbo_ratio_limit;
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]54unsigned int extra_msr_offset32;
55unsigned int extra_msr_offset64;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]56unsigned int extra_delta_offset32;
57unsigned int extra_delta_offset64;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]58double bclk;
59unsigned int show_pkg;
60unsigned int show_core;
61unsigned int show_cpu;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]62unsigned int show_pkg_only;
63unsigned int show_core_only;
64char *output_buffer, *outp;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]65
66int aperf_mperf_unstable;
67int backwards_count;
68char *progname;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]69
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]70cpu_set_t *cpu_present_set, *cpu_affinity_set;
71size_t cpu_present_setsize, cpu_affinity_setsize;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]72
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]73struct thread_data {
74 unsigned long long tsc;
75 unsigned long long aperf;
76 unsigned long long mperf;
77 unsigned long long c1; /* derived */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]78 unsigned long long extra_msr64;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]79 unsigned long long extra_delta64;
80 unsigned long long extra_msr32;
81 unsigned long long extra_delta32;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]82 unsigned int cpu_id;
83 unsigned int flags;
84#define CPU_IS_FIRST_THREAD_IN_CORE 0x2
85#define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
86} *thread_even, *thread_odd;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]87
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]88struct core_data {
89 unsigned long long c3;
90 unsigned long long c6;
91 unsigned long long c7;
92 unsigned int core_id;
93} *core_even, *core_odd;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]94
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]95struct pkg_data {
96 unsigned long long pc2;
97 unsigned long long pc3;
98 unsigned long long pc6;
99 unsigned long long pc7;
100 unsigned int package_id;
101} *package_even, *package_odd;
102
103#define ODD_COUNTERS thread_odd, core_odd, package_odd
104#define EVEN_COUNTERS thread_even, core_even, package_even
105
106#define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
107 (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
108 topo.num_threads_per_core + \
109 (core_no) * topo.num_threads_per_core + (thread_no))
110#define GET_CORE(core_base, core_no, pkg_no) \
111 (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
112#define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
113
114struct system_summary {
115 struct thread_data threads;
116 struct core_data cores;
117 struct pkg_data packages;
118} sum, average;
119
120
121struct topo_params {
122 int num_packages;
123 int num_cpus;
124 int num_cores;
125 int max_cpu_num;
126 int num_cores_per_pkg;
127 int num_threads_per_core;
128} topo;
129
130struct timeval tv_even, tv_odd, tv_delta;
131
132void setup_all_buffers(void);
133
134int cpu_is_not_present(int cpu)
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]135{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]136 return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]137}
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]138/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]139 * run func(thread, core, package) in topology order
140 * skip non-present cpus
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]141 */
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]142
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]143int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
144 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]145{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]146 int retval, pkg_no, core_no, thread_no;
147
148 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
149 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
150 for (thread_no = 0; thread_no <
151 topo.num_threads_per_core; ++thread_no) {
152 struct thread_data *t;
153 struct core_data *c;
154 struct pkg_data *p;
155
156 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
157
158 if (cpu_is_not_present(t->cpu_id))
159 continue;
160
161 c = GET_CORE(core_base, core_no, pkg_no);
162 p = GET_PKG(pkg_base, pkg_no);
163
164 retval = func(t, c, p);
165 if (retval)
166 return retval;
167 }
168 }
169 }
170 return 0;
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]171}
172
173int cpu_migrate(int cpu)
174{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]175 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
176 CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
177 if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
Len Brown88c32812012-03-29 21:44:40 -0400[diff] [blame]178 return -1;
179 else
180 return 0;
181}
182
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]183int get_msr(int cpu, off_t offset, unsigned long long *msr)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]184{
185 ssize_t retval;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]186 char pathname[32];
187 int fd;
188
189 sprintf(pathname, "/dev/cpu/%d/msr", cpu);
190 fd = open(pathname, O_RDONLY);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]191 if (fd < 0)
192 return -1;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]193
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]194 retval = pread(fd, msr, sizeof *msr, offset);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]195 close(fd);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]196
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]197 if (retval != sizeof *msr) {
198 fprintf(stderr, "%s offset 0x%zx read failed\n", pathname, offset);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]199 return -1;
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]200 }
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]201
202 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]203}
204
Len Browna829eb42011-02-10 23:36:34 -0500[diff] [blame]205void print_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]206{
207 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]208 outp += sprintf(outp, "pk");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]209 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]210 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]211 if (show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]212 outp += sprintf(outp, "cor");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]213 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]214 outp += sprintf(outp, " CPU");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]215 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]216 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]217 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]218 outp += sprintf(outp, " %%c0");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]219 if (has_aperf)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]220 outp += sprintf(outp, " GHz");
221 outp += sprintf(outp, " TSC");
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]222 if (extra_delta_offset32)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]223 outp += sprintf(outp, " count 0x%03X", extra_delta_offset32);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]224 if (extra_delta_offset64)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]225 outp += sprintf(outp, " COUNT 0x%03X", extra_delta_offset64);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]226 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]227 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]228 if (extra_msr_offset64)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]229 outp += sprintf(outp, " MSR 0x%03X", extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]230 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]231 outp += sprintf(outp, " %%c1");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]232 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]233 outp += sprintf(outp, " %%c3");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]234 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]235 outp += sprintf(outp, " %%c6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]236 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]237 outp += sprintf(outp, " %%c7");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]238 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]239 outp += sprintf(outp, " %%pc2");
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, " %%pc3");
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, " %%pc6");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]244 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]245 outp += sprintf(outp, " %%pc7");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]246
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]247 outp += sprintf(outp, "\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]248}
249
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]250int dump_counters(struct thread_data *t, struct core_data *c,
251 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]252{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]253 fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]254
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]255 if (t) {
256 fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags);
257 fprintf(stderr, "TSC: %016llX\n", t->tsc);
258 fprintf(stderr, "aperf: %016llX\n", t->aperf);
259 fprintf(stderr, "mperf: %016llX\n", t->mperf);
260 fprintf(stderr, "c1: %016llX\n", t->c1);
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]261 fprintf(stderr, "msr0x%x: %08llX\n",
262 extra_delta_offset32, t->extra_delta32);
263 fprintf(stderr, "msr0x%x: %016llX\n",
264 extra_delta_offset64, t->extra_delta64);
265 fprintf(stderr, "msr0x%x: %08llX\n",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]266 extra_msr_offset32, t->extra_msr32);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]267 fprintf(stderr, "msr0x%x: %016llX\n",
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]268 extra_msr_offset64, t->extra_msr64);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]269 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]270
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]271 if (c) {
272 fprintf(stderr, "core: %d\n", c->core_id);
273 fprintf(stderr, "c3: %016llX\n", c->c3);
274 fprintf(stderr, "c6: %016llX\n", c->c6);
275 fprintf(stderr, "c7: %016llX\n", c->c7);
276 }
277
278 if (p) {
279 fprintf(stderr, "package: %d\n", p->package_id);
280 fprintf(stderr, "pc2: %016llX\n", p->pc2);
281 fprintf(stderr, "pc3: %016llX\n", p->pc3);
282 fprintf(stderr, "pc6: %016llX\n", p->pc6);
283 fprintf(stderr, "pc7: %016llX\n", p->pc7);
284 }
285 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]286}
287
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]288/*
289 * column formatting convention & formats
290 * package: "pk" 2 columns %2d
291 * core: "cor" 3 columns %3d
292 * CPU: "CPU" 3 columns %3d
293 * GHz: "GHz" 3 columns %3.2
294 * TSC: "TSC" 3 columns %3.2
295 * percentage " %pc3" %6.2
296 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]297int format_counters(struct thread_data *t, struct core_data *c,
298 struct pkg_data *p)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]299{
300 double interval_float;
301
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]302 /* if showing only 1st thread in core and this isn't one, bail out */
303 if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
304 return 0;
305
306 /* if showing only 1st thread in pkg and this isn't one, bail out */
307 if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
308 return 0;
309
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]310 interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
311
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]312 /* topo columns, print blanks on 1st (average) line */
313 if (t == &average.threads) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]314 if (show_pkg)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]315 outp += sprintf(outp, " ");
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]316 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]317 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]318 if (show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]319 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]320 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]321 outp += sprintf(outp, " " " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]322 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]323 if (show_pkg) {
324 if (p)
325 outp += sprintf(outp, "%2d", p->package_id);
326 else
327 outp += sprintf(outp, " ");
328 }
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]329 if (show_pkg && show_core)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]330 outp += sprintf(outp, " ");
331 if (show_core) {
332 if (c)
333 outp += sprintf(outp, "%3d", c->core_id);
334 else
335 outp += sprintf(outp, " ");
336 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]337 if (show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]338 outp += sprintf(outp, " %3d", t->cpu_id);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]339 }
340
341 /* %c0 */
342 if (do_nhm_cstates) {
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]343 if (show_pkg || show_core || show_cpu)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]344 outp += sprintf(outp, " ");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]345 if (!skip_c0)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]346 outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]347 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]348 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]349 }
350
351 /* GHz */
352 if (has_aperf) {
353 if (!aperf_mperf_unstable) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]354 outp += sprintf(outp, " %3.2f",
355 1.0 * t->tsc / units * t->aperf /
356 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]357 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]358 if (t->aperf > t->tsc || t->mperf > t->tsc) {
359 outp += sprintf(outp, " ***");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]360 } else {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]361 outp += sprintf(outp, "%3.1f*",
362 1.0 * t->tsc /
363 units * t->aperf /
364 t->mperf / interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]365 }
366 }
367 }
368
369 /* TSC */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]370 outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]371
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]372 /* delta */
373 if (extra_delta_offset32)
374 outp += sprintf(outp, " %11llu", t->extra_delta32);
375
376 /* DELTA */
377 if (extra_delta_offset64)
378 outp += sprintf(outp, " %11llu", t->extra_delta64);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]379 /* msr */
380 if (extra_msr_offset32)
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]381 outp += sprintf(outp, " 0x%08llx", t->extra_msr32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]382
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]383 /* MSR */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]384 if (extra_msr_offset64)
385 outp += sprintf(outp, " 0x%016llx", t->extra_msr64);
Len Brown130ff302012-09-21 22:56:06 -0400[diff] [blame]386
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]387 if (do_nhm_cstates) {
388 if (!skip_c1)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]389 outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]390 else
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]391 outp += sprintf(outp, " ****");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]392 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]393
394 /* print per-core data only for 1st thread in core */
395 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
396 goto done;
397
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]398 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]399 outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]400 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]401 outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]402 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]403 outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc);
404
405 /* print per-package data only for 1st core in package */
406 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
407 goto done;
408
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]409 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]410 outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]411 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]412 outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]413 if (do_nhm_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]414 outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]415 if (do_snb_cstates)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]416 outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
417done:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]418 outp += sprintf(outp, "\n");
419
420 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]421}
422
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]423void flush_stdout()
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]424{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]425 fputs(output_buffer, stdout);
426 outp = output_buffer;
427}
428void flush_stderr()
429{
430 fputs(output_buffer, stderr);
431 outp = output_buffer;
432}
433void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
434{
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]435 static int printed;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]436
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]437 if (!printed || !summary_only)
438 print_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]439
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]440 if (topo.num_cpus > 1)
441 format_counters(&average.threads, &average.cores,
442 &average.packages);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]443
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]444 printed = 1;
445
446 if (summary_only)
447 return;
448
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]449 for_all_cpus(format_counters, t, c, p);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]450}
451
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]452void
453delta_package(struct pkg_data *new, struct pkg_data *old)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]454{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]455 old->pc2 = new->pc2 - old->pc2;
456 old->pc3 = new->pc3 - old->pc3;
457 old->pc6 = new->pc6 - old->pc6;
458 old->pc7 = new->pc7 - old->pc7;
459}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]460
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]461void
462delta_core(struct core_data *new, struct core_data *old)
463{
464 old->c3 = new->c3 - old->c3;
465 old->c6 = new->c6 - old->c6;
466 old->c7 = new->c7 - old->c7;
467}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]468
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]469/*
470 * old = new - old
471 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]472void
473delta_thread(struct thread_data *new, struct thread_data *old,
474 struct core_data *core_delta)
475{
476 old->tsc = new->tsc - old->tsc;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]477
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]478 /* check for TSC < 1 Mcycles over interval */
479 if (old->tsc < (1000 * 1000)) {
480 fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n");
481 fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n");
482 fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n");
483 exit(-3);
484 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]485
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]486 old->c1 = new->c1 - old->c1;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]487
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]488 if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
489 old->aperf = new->aperf - old->aperf;
490 old->mperf = new->mperf - old->mperf;
491 } else {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]492
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]493 if (!aperf_mperf_unstable) {
494 fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
495 fprintf(stderr, "* Frequency results do not cover entire interval *\n");
496 fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
497
498 aperf_mperf_unstable = 1;
499 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]500 /*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]501 * mperf delta is likely a huge "positive" number
502 * can not use it for calculating c0 time
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]503 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]504 skip_c0 = 1;
505 skip_c1 = 1;
506 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]507
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]508
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]509 /*
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]510 * As counter collection is not atomic,
511 * it is possible for mperf's non-halted cycles + idle states
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]512 * to exceed TSC's all cycles: show c1 = 0% in that case.
513 */
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]514 if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]515 old->c1 = 0;
516 else {
517 /* normal case, derive c1 */
518 old->c1 = old->tsc - old->mperf - core_delta->c3
519 - core_delta->c6 - core_delta->c7;
520 }
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]521
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]522 if (old->mperf == 0) {
Len Brownc3ae3312012-06-13 21:31:46 -0400[diff] [blame]523 if (verbose > 1) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]524 old->mperf = 1; /* divide by 0 protection */
525 }
526
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]527 old->extra_delta32 = new->extra_delta32 - old->extra_delta32;
528 old->extra_delta32 &= 0xFFFFFFFF;
529
530 old->extra_delta64 = new->extra_delta64 - old->extra_delta64;
531
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]532 /*
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]533 * Extra MSR is just a snapshot, simply copy latest w/o subtracting
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]534 */
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]535 old->extra_msr32 = new->extra_msr32;
536 old->extra_msr64 = new->extra_msr64;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]537}
538
539int delta_cpu(struct thread_data *t, struct core_data *c,
540 struct pkg_data *p, struct thread_data *t2,
541 struct core_data *c2, struct pkg_data *p2)
542{
543 /* calculate core delta only for 1st thread in core */
544 if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
545 delta_core(c, c2);
546
547 /* always calculate thread delta */
548 delta_thread(t, t2, c2); /* c2 is core delta */
549
550 /* calculate package delta only for 1st core in package */
551 if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
552 delta_package(p, p2);
553
554 return 0;
555}
556
557void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
558{
559 t->tsc = 0;
560 t->aperf = 0;
561 t->mperf = 0;
562 t->c1 = 0;
563
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]564 t->extra_delta32 = 0;
565 t->extra_delta64 = 0;
566
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]567 /* tells format_counters to dump all fields from this set */
568 t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;
569
570 c->c3 = 0;
571 c->c6 = 0;
572 c->c7 = 0;
573
574 p->pc2 = 0;
575 p->pc3 = 0;
576 p->pc6 = 0;
577 p->pc7 = 0;
578}
579int sum_counters(struct thread_data *t, struct core_data *c,
580 struct pkg_data *p)
581{
582 average.threads.tsc += t->tsc;
583 average.threads.aperf += t->aperf;
584 average.threads.mperf += t->mperf;
585 average.threads.c1 += t->c1;
586
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]587 average.threads.extra_delta32 += t->extra_delta32;
588 average.threads.extra_delta64 += t->extra_delta64;
589
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]590 /* sum per-core values only for 1st thread in core */
591 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
592 return 0;
593
594 average.cores.c3 += c->c3;
595 average.cores.c6 += c->c6;
596 average.cores.c7 += c->c7;
597
598 /* sum per-pkg values only for 1st core in pkg */
599 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
600 return 0;
601
602 average.packages.pc2 += p->pc2;
603 average.packages.pc3 += p->pc3;
604 average.packages.pc6 += p->pc6;
605 average.packages.pc7 += p->pc7;
606
607 return 0;
608}
609/*
610 * sum the counters for all cpus in the system
611 * compute the weighted average
612 */
613void compute_average(struct thread_data *t, struct core_data *c,
614 struct pkg_data *p)
615{
616 clear_counters(&average.threads, &average.cores, &average.packages);
617
618 for_all_cpus(sum_counters, t, c, p);
619
620 average.threads.tsc /= topo.num_cpus;
621 average.threads.aperf /= topo.num_cpus;
622 average.threads.mperf /= topo.num_cpus;
623 average.threads.c1 /= topo.num_cpus;
624
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]625 average.threads.extra_delta32 /= topo.num_cpus;
626 average.threads.extra_delta32 &= 0xFFFFFFFF;
627
628 average.threads.extra_delta64 /= topo.num_cpus;
629
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]630 average.cores.c3 /= topo.num_cores;
631 average.cores.c6 /= topo.num_cores;
632 average.cores.c7 /= topo.num_cores;
633
634 average.packages.pc2 /= topo.num_packages;
635 average.packages.pc3 /= topo.num_packages;
636 average.packages.pc6 /= topo.num_packages;
637 average.packages.pc7 /= topo.num_packages;
638}
639
640static unsigned long long rdtsc(void)
641{
642 unsigned int low, high;
643
644 asm volatile("rdtsc" : "=a" (low), "=d" (high));
645
646 return low | ((unsigned long long)high) << 32;
647}
648
649
650/*
651 * get_counters(...)
652 * migrate to cpu
653 * acquire and record local counters for that cpu
654 */
655int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
656{
657 int cpu = t->cpu_id;
658
659 if (cpu_migrate(cpu))
660 return -1;
661
662 t->tsc = rdtsc(); /* we are running on local CPU of interest */
663
664 if (has_aperf) {
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]665 if (get_msr(cpu, MSR_IA32_APERF, &t->aperf))
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]666 return -3;
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]667 if (get_msr(cpu, MSR_IA32_MPERF, &t->mperf))
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]668 return -4;
669 }
670
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]671 if (extra_delta_offset32) {
672 if (get_msr(cpu, extra_delta_offset32, &t->extra_delta32))
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]673 return -5;
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]674 t->extra_delta32 &= 0xFFFFFFFF;
675 }
676
677 if (extra_delta_offset64)
678 if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))
679 return -5;
680
681 if (extra_msr_offset32) {
682 if (get_msr(cpu, extra_msr_offset32, &t->extra_msr32))
683 return -5;
684 t->extra_msr32 &= 0xFFFFFFFF;
685 }
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]686
687 if (extra_msr_offset64)
688 if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]689 return -5;
690
691 /* collect core counters only for 1st thread in core */
692 if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
693 return 0;
694
695 if (do_nhm_cstates) {
696 if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
697 return -6;
698 if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
699 return -7;
700 }
701
702 if (do_snb_cstates)
703 if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
704 return -8;
705
706 /* collect package counters only for 1st core in package */
707 if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
708 return 0;
709
710 if (do_nhm_cstates) {
711 if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
712 return -9;
713 if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
714 return -10;
715 }
716 if (do_snb_cstates) {
717 if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
718 return -11;
719 if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
720 return -12;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]721 }
722 return 0;
723}
724
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]725void print_verbose_header(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]726{
727 unsigned long long msr;
728 unsigned int ratio;
729
730 if (!do_nehalem_platform_info)
731 return;
732
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]733 get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]734
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]735 if (verbose > 1)
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]736 fprintf(stderr, "MSR_NHM_PLATFORM_INFO: 0x%llx\n", msr);
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]737
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]738 ratio = (msr >> 40) & 0xFF;
739 fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
740 ratio, bclk, ratio * bclk);
741
742 ratio = (msr >> 8) & 0xFF;
743 fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
744 ratio, bclk, ratio * bclk);
745
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]746 if (!do_ivt_turbo_ratio_limit)
747 goto print_nhm_turbo_ratio_limits;
748
749 get_msr(0, MSR_IVT_TURBO_RATIO_LIMIT, &msr);
750
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]751 if (verbose > 1)
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]752 fprintf(stderr, "MSR_IVT_TURBO_RATIO_LIMIT: 0x%llx\n", msr);
753
754 ratio = (msr >> 56) & 0xFF;
755 if (ratio)
756 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 16 active cores\n",
757 ratio, bclk, ratio * bclk);
758
759 ratio = (msr >> 48) & 0xFF;
760 if (ratio)
761 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 15 active cores\n",
762 ratio, bclk, ratio * bclk);
763
764 ratio = (msr >> 40) & 0xFF;
765 if (ratio)
766 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 14 active cores\n",
767 ratio, bclk, ratio * bclk);
768
769 ratio = (msr >> 32) & 0xFF;
770 if (ratio)
771 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 13 active cores\n",
772 ratio, bclk, ratio * bclk);
773
774 ratio = (msr >> 24) & 0xFF;
775 if (ratio)
776 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 12 active cores\n",
777 ratio, bclk, ratio * bclk);
778
779 ratio = (msr >> 16) & 0xFF;
780 if (ratio)
781 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 11 active cores\n",
782 ratio, bclk, ratio * bclk);
783
784 ratio = (msr >> 8) & 0xFF;
785 if (ratio)
786 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 10 active cores\n",
787 ratio, bclk, ratio * bclk);
788
789 ratio = (msr >> 0) & 0xFF;
790 if (ratio)
791 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n",
792 ratio, bclk, ratio * bclk);
793
794print_nhm_turbo_ratio_limits:
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]795
796 if (!do_nehalem_turbo_ratio_limit)
797 return;
798
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]799 get_msr(0, MSR_NHM_TURBO_RATIO_LIMIT, &msr);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]800
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]801 if (verbose > 1)
Len Brown9c63a652012-10-31 01:29:52 -0400[diff] [blame]802 fprintf(stderr, "MSR_NHM_TURBO_RATIO_LIMIT: 0x%llx\n", msr);
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]803
804 ratio = (msr >> 56) & 0xFF;
805 if (ratio)
806 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 8 active cores\n",
807 ratio, bclk, ratio * bclk);
808
809 ratio = (msr >> 48) & 0xFF;
810 if (ratio)
811 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 7 active cores\n",
812 ratio, bclk, ratio * bclk);
813
814 ratio = (msr >> 40) & 0xFF;
815 if (ratio)
816 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 6 active cores\n",
817 ratio, bclk, ratio * bclk);
818
819 ratio = (msr >> 32) & 0xFF;
820 if (ratio)
821 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 5 active cores\n",
822 ratio, bclk, ratio * bclk);
823
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]824 ratio = (msr >> 24) & 0xFF;
825 if (ratio)
826 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
827 ratio, bclk, ratio * bclk);
828
829 ratio = (msr >> 16) & 0xFF;
830 if (ratio)
831 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
832 ratio, bclk, ratio * bclk);
833
834 ratio = (msr >> 8) & 0xFF;
835 if (ratio)
836 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
837 ratio, bclk, ratio * bclk);
838
839 ratio = (msr >> 0) & 0xFF;
840 if (ratio)
841 fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
842 ratio, bclk, ratio * bclk);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]843}
844
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]845void free_all_buffers(void)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]846{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]847 CPU_FREE(cpu_present_set);
848 cpu_present_set = NULL;
849 cpu_present_set = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]850
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]851 CPU_FREE(cpu_affinity_set);
852 cpu_affinity_set = NULL;
853 cpu_affinity_setsize = 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]854
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]855 free(thread_even);
856 free(core_even);
857 free(package_even);
858
859 thread_even = NULL;
860 core_even = NULL;
861 package_even = NULL;
862
863 free(thread_odd);
864 free(core_odd);
865 free(package_odd);
866
867 thread_odd = NULL;
868 core_odd = NULL;
869 package_odd = NULL;
870
871 free(output_buffer);
872 output_buffer = NULL;
873 outp = NULL;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]874}
875
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]876/*
877 * cpu_is_first_sibling_in_core(cpu)
878 * return 1 if given CPU is 1st HT sibling in the core
879 */
880int cpu_is_first_sibling_in_core(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]881{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]882 char path[64];
883 FILE *filep;
884 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]885
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]886 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
887 filep = fopen(path, "r");
888 if (filep == NULL) {
889 perror(path);
890 exit(1);
891 }
892 fscanf(filep, "%d", &first_cpu);
893 fclose(filep);
894 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]895}
896
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]897/*
898 * cpu_is_first_core_in_package(cpu)
899 * return 1 if given CPU is 1st core in package
900 */
901int cpu_is_first_core_in_package(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]902{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]903 char path[64];
904 FILE *filep;
905 int first_cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]906
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]907 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
908 filep = fopen(path, "r");
909 if (filep == NULL) {
910 perror(path);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]911 exit(1);
912 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]913 fscanf(filep, "%d", &first_cpu);
914 fclose(filep);
915 return (cpu == first_cpu);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]916}
917
918int get_physical_package_id(int cpu)
919{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]920 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]921 FILE *filep;
922 int pkg;
923
924 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
925 filep = fopen(path, "r");
926 if (filep == NULL) {
927 perror(path);
928 exit(1);
929 }
930 fscanf(filep, "%d", &pkg);
931 fclose(filep);
932 return pkg;
933}
934
935int get_core_id(int cpu)
936{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]937 char path[80];
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]938 FILE *filep;
939 int core;
940
941 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
942 filep = fopen(path, "r");
943 if (filep == NULL) {
944 perror(path);
945 exit(1);
946 }
947 fscanf(filep, "%d", &core);
948 fclose(filep);
949 return core;
950}
951
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]952int get_num_ht_siblings(int cpu)
953{
954 char path[80];
955 FILE *filep;
956 int sib1, sib2;
957 int matches;
958 char character;
959
960 sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
961 filep = fopen(path, "r");
962 if (filep == NULL) {
963 perror(path);
964 exit(1);
965 }
966 /*
967 * file format:
968 * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
969 * otherwinse 1 sibling (self).
970 */
971 matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
972
973 fclose(filep);
974
975 if (matches == 3)
976 return 2;
977 else
978 return 1;
979}
980
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]981/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]982 * run func(thread, core, package) in topology order
983 * skip non-present cpus
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]984 */
985
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]986int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
987 struct pkg_data *, struct thread_data *, struct core_data *,
988 struct pkg_data *), struct thread_data *thread_base,
989 struct core_data *core_base, struct pkg_data *pkg_base,
990 struct thread_data *thread_base2, struct core_data *core_base2,
991 struct pkg_data *pkg_base2)
992{
993 int retval, pkg_no, core_no, thread_no;
994
995 for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
996 for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
997 for (thread_no = 0; thread_no <
998 topo.num_threads_per_core; ++thread_no) {
999 struct thread_data *t, *t2;
1000 struct core_data *c, *c2;
1001 struct pkg_data *p, *p2;
1002
1003 t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
1004
1005 if (cpu_is_not_present(t->cpu_id))
1006 continue;
1007
1008 t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
1009
1010 c = GET_CORE(core_base, core_no, pkg_no);
1011 c2 = GET_CORE(core_base2, core_no, pkg_no);
1012
1013 p = GET_PKG(pkg_base, pkg_no);
1014 p2 = GET_PKG(pkg_base2, pkg_no);
1015
1016 retval = func(t, c, p, t2, c2, p2);
1017 if (retval)
1018 return retval;
1019 }
1020 }
1021 }
1022 return 0;
1023}
1024
1025/*
1026 * run func(cpu) on every cpu in /proc/stat
1027 * return max_cpu number
1028 */
1029int for_all_proc_cpus(int (func)(int))
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1030{
1031 FILE *fp;
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1032 int cpu_num;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1033 int retval;
1034
1035 fp = fopen(proc_stat, "r");
1036 if (fp == NULL) {
1037 perror(proc_stat);
1038 exit(1);
1039 }
1040
1041 retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
1042 if (retval != 0) {
1043 perror("/proc/stat format");
1044 exit(1);
1045 }
1046
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1047 while (1) {
1048 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]1049 if (retval != 1)
1050 break;
1051
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1052 retval = func(cpu_num);
1053 if (retval) {
1054 fclose(fp);
1055 return(retval);
1056 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1057 }
1058 fclose(fp);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1059 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1060}
1061
1062void re_initialize(void)
1063{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1064 free_all_buffers();
1065 setup_all_buffers();
1066 printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1067}
1068
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1069
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1070/*
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1071 * count_cpus()
1072 * remember the last one seen, it will be the max
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1073 */
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1074int count_cpus(int cpu)
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1075{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1076 if (topo.max_cpu_num < cpu)
1077 topo.max_cpu_num = cpu;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1078
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1079 topo.num_cpus += 1;
1080 return 0;
1081}
1082int mark_cpu_present(int cpu)
1083{
1084 CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1085 return 0;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1086}
1087
1088void turbostat_loop()
1089{
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1090 int retval;
1091
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1092restart:
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1093 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1094 if (retval < -1) {
1095 exit(retval);
1096 } else if (retval == -1) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1097 re_initialize();
1098 goto restart;
1099 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1100 gettimeofday(&tv_even, (struct timezone *)NULL);
1101
1102 while (1) {
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1103 if (for_all_proc_cpus(cpu_is_not_present)) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1104 re_initialize();
1105 goto restart;
1106 }
1107 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1108 retval = for_all_cpus(get_counters, ODD_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1109 if (retval < -1) {
1110 exit(retval);
1111 } else if (retval == -1) {
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1112 re_initialize();
1113 goto restart;
1114 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1115 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1116 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1117 for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
1118 compute_average(EVEN_COUNTERS);
1119 format_all_counters(EVEN_COUNTERS);
1120 flush_stdout();
Len Brown15aaa342012-03-29 22:19:58 -0400[diff] [blame]1121 sleep(interval_sec);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1122 retval = for_all_cpus(get_counters, EVEN_COUNTERS);
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1123 if (retval < -1) {
1124 exit(retval);
1125 } else if (retval == -1) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1126 re_initialize();
1127 goto restart;
1128 }
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1129 gettimeofday(&tv_even, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1130 timersub(&tv_even, &tv_odd, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1131 for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
1132 compute_average(ODD_COUNTERS);
1133 format_all_counters(ODD_COUNTERS);
1134 flush_stdout();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1135 }
1136}
1137
1138void check_dev_msr()
1139{
1140 struct stat sb;
1141
1142 if (stat("/dev/cpu/0/msr", &sb)) {
1143 fprintf(stderr, "no /dev/cpu/0/msr\n");
1144 fprintf(stderr, "Try \"# modprobe msr\"\n");
1145 exit(-5);
1146 }
1147}
1148
1149void check_super_user()
1150{
1151 if (getuid() != 0) {
1152 fprintf(stderr, "must be root\n");
1153 exit(-6);
1154 }
1155}
1156
1157int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model)
1158{
1159 if (!genuine_intel)
1160 return 0;
1161
1162 if (family != 6)
1163 return 0;
1164
1165 switch (model) {
1166 case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
1167 case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
1168 case 0x1F: /* Core i7 and i5 Processor - Nehalem */
1169 case 0x25: /* Westmere Client - Clarkdale, Arrandale */
1170 case 0x2C: /* Westmere EP - Gulftown */
1171 case 0x2A: /* SNB */
1172 case 0x2D: /* SNB Xeon */
Len Brown553575f2011-11-18 03:32:01 -0500[diff] [blame]1173 case 0x3A: /* IVB */
Len Brown1300651b2012-09-26 18:11:31 -0400[diff] [blame]1174 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1175 return 1;
1176 case 0x2E: /* Nehalem-EX Xeon - Beckton */
1177 case 0x2F: /* Westmere-EX Xeon - Eagleton */
1178 default:
1179 return 0;
1180 }
1181}
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1182int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model)
1183{
1184 if (!genuine_intel)
1185 return 0;
1186
1187 if (family != 6)
1188 return 0;
1189
1190 switch (model) {
1191 case 0x3E: /* IVB Xeon */
1192 return 1;
1193 default:
1194 return 0;
1195 }
1196}
1197
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1198
1199int is_snb(unsigned int family, unsigned int model)
1200{
1201 if (!genuine_intel)
1202 return 0;
1203
1204 switch (model) {
1205 case 0x2A:
1206 case 0x2D:
Len Brown650a37f2012-06-03 23:34:44 -0400[diff] [blame]1207 case 0x3A: /* IVB */
Len Brown1300651b2012-09-26 18:11:31 -0400[diff] [blame]1208 case 0x3E: /* IVB Xeon */
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1209 return 1;
1210 }
1211 return 0;
1212}
1213
1214double discover_bclk(unsigned int family, unsigned int model)
1215{
1216 if (is_snb(family, model))
1217 return 100.00;
1218 else
1219 return 133.33;
1220}
1221
1222void check_cpuid()
1223{
1224 unsigned int eax, ebx, ecx, edx, max_level;
1225 unsigned int fms, family, model, stepping;
1226
1227 eax = ebx = ecx = edx = 0;
1228
1229 asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0));
1230
1231 if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
1232 genuine_intel = 1;
1233
1234 if (verbose)
1235 fprintf(stderr, "%.4s%.4s%.4s ",
1236 (char *)&ebx, (char *)&edx, (char *)&ecx);
1237
1238 asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
1239 family = (fms >> 8) & 0xf;
1240 model = (fms >> 4) & 0xf;
1241 stepping = fms & 0xf;
1242 if (family == 6 || family == 0xf)
1243 model += ((fms >> 16) & 0xf) << 4;
1244
1245 if (verbose)
1246 fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
1247 max_level, family, model, stepping, family, model, stepping);
1248
1249 if (!(edx & (1 << 5))) {
1250 fprintf(stderr, "CPUID: no MSR\n");
1251 exit(1);
1252 }
1253
1254 /*
1255 * check max extended function levels of CPUID.
1256 * This is needed to check for invariant TSC.
1257 * This check is valid for both Intel and AMD.
1258 */
1259 ebx = ecx = edx = 0;
1260 asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000));
1261
1262 if (max_level < 0x80000007) {
1263 fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level);
1264 exit(1);
1265 }
1266
1267 /*
1268 * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
1269 * this check is valid for both Intel and AMD
1270 */
1271 asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1272 has_invariant_tsc = edx & (1 << 8);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1273
1274 if (!has_invariant_tsc) {
1275 fprintf(stderr, "No invariant TSC\n");
1276 exit(1);
1277 }
1278
1279 /*
1280 * APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
1281 * this check is valid for both Intel and AMD
1282 */
1283
1284 asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
Thomas Renninger8209e052011-01-21 15:11:19 +0100[diff] [blame]1285 has_aperf = ecx & (1 << 0);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1286 if (!has_aperf) {
1287 fprintf(stderr, "No APERF MSR\n");
1288 exit(1);
1289 }
1290
1291 do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
1292 do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
1293 do_snb_cstates = is_snb(family, model);
1294 bclk = discover_bclk(family, model);
1295
1296 do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
Len Brown6574a5d2012-09-21 00:01:31 -0400[diff] [blame]1297 do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1298}
1299
1300
1301void usage()
1302{
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1303 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]1304 progname);
1305 exit(1);
1306}
1307
1308
1309/*
1310 * in /dev/cpu/ return success for names that are numbers
1311 * ie. filter out ".", "..", "microcode".
1312 */
1313int dir_filter(const struct dirent *dirp)
1314{
1315 if (isdigit(dirp->d_name[0]))
1316 return 1;
1317 else
1318 return 0;
1319}
1320
1321int open_dev_cpu_msr(int dummy1)
1322{
1323 return 0;
1324}
1325
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1326void topology_probe()
1327{
1328 int i;
1329 int max_core_id = 0;
1330 int max_package_id = 0;
1331 int max_siblings = 0;
1332 struct cpu_topology {
1333 int core_id;
1334 int physical_package_id;
1335 } *cpus;
1336
1337 /* Initialize num_cpus, max_cpu_num */
1338 topo.num_cpus = 0;
1339 topo.max_cpu_num = 0;
1340 for_all_proc_cpus(count_cpus);
1341 if (!summary_only && topo.num_cpus > 1)
1342 show_cpu = 1;
1343
1344 if (verbose > 1)
1345 fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
1346
1347 cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
1348 if (cpus == NULL) {
1349 perror("calloc cpus");
1350 exit(1);
1351 }
1352
1353 /*
1354 * Allocate and initialize cpu_present_set
1355 */
1356 cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
1357 if (cpu_present_set == NULL) {
1358 perror("CPU_ALLOC");
1359 exit(3);
1360 }
1361 cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1362 CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
1363 for_all_proc_cpus(mark_cpu_present);
1364
1365 /*
1366 * Allocate and initialize cpu_affinity_set
1367 */
1368 cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
1369 if (cpu_affinity_set == NULL) {
1370 perror("CPU_ALLOC");
1371 exit(3);
1372 }
1373 cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
1374 CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
1375
1376
1377 /*
1378 * For online cpus
1379 * find max_core_id, max_package_id
1380 */
1381 for (i = 0; i <= topo.max_cpu_num; ++i) {
1382 int siblings;
1383
1384 if (cpu_is_not_present(i)) {
1385 if (verbose > 1)
1386 fprintf(stderr, "cpu%d NOT PRESENT\n", i);
1387 continue;
1388 }
1389 cpus[i].core_id = get_core_id(i);
1390 if (cpus[i].core_id > max_core_id)
1391 max_core_id = cpus[i].core_id;
1392
1393 cpus[i].physical_package_id = get_physical_package_id(i);
1394 if (cpus[i].physical_package_id > max_package_id)
1395 max_package_id = cpus[i].physical_package_id;
1396
1397 siblings = get_num_ht_siblings(i);
1398 if (siblings > max_siblings)
1399 max_siblings = siblings;
1400 if (verbose > 1)
1401 fprintf(stderr, "cpu %d pkg %d core %d\n",
1402 i, cpus[i].physical_package_id, cpus[i].core_id);
1403 }
1404 topo.num_cores_per_pkg = max_core_id + 1;
1405 if (verbose > 1)
1406 fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
1407 max_core_id, topo.num_cores_per_pkg);
1408 if (!summary_only && topo.num_cores_per_pkg > 1)
1409 show_core = 1;
1410
1411 topo.num_packages = max_package_id + 1;
1412 if (verbose > 1)
1413 fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
1414 max_package_id, topo.num_packages);
1415 if (!summary_only && topo.num_packages > 1)
1416 show_pkg = 1;
1417
1418 topo.num_threads_per_core = max_siblings;
1419 if (verbose > 1)
1420 fprintf(stderr, "max_siblings %d\n", max_siblings);
1421
1422 free(cpus);
1423}
1424
1425void
1426allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
1427{
1428 int i;
1429
1430 *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
1431 topo.num_packages, sizeof(struct thread_data));
1432 if (*t == NULL)
1433 goto error;
1434
1435 for (i = 0; i < topo.num_threads_per_core *
1436 topo.num_cores_per_pkg * topo.num_packages; i++)
1437 (*t)[i].cpu_id = -1;
1438
1439 *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
1440 sizeof(struct core_data));
1441 if (*c == NULL)
1442 goto error;
1443
1444 for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
1445 (*c)[i].core_id = -1;
1446
1447 *p = calloc(topo.num_packages, sizeof(struct pkg_data));
1448 if (*p == NULL)
1449 goto error;
1450
1451 for (i = 0; i < topo.num_packages; i++)
1452 (*p)[i].package_id = i;
1453
1454 return;
1455error:
1456 perror("calloc counters");
1457 exit(1);
1458}
1459/*
1460 * init_counter()
1461 *
1462 * set cpu_id, core_num, pkg_num
1463 * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
1464 *
1465 * increment topo.num_cores when 1st core in pkg seen
1466 */
1467void init_counter(struct thread_data *thread_base, struct core_data *core_base,
1468 struct pkg_data *pkg_base, int thread_num, int core_num,
1469 int pkg_num, int cpu_id)
1470{
1471 struct thread_data *t;
1472 struct core_data *c;
1473 struct pkg_data *p;
1474
1475 t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
1476 c = GET_CORE(core_base, core_num, pkg_num);
1477 p = GET_PKG(pkg_base, pkg_num);
1478
1479 t->cpu_id = cpu_id;
1480 if (thread_num == 0) {
1481 t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
1482 if (cpu_is_first_core_in_package(cpu_id))
1483 t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
1484 }
1485
1486 c->core_id = core_num;
1487 p->package_id = pkg_num;
1488}
1489
1490
1491int initialize_counters(int cpu_id)
1492{
1493 int my_thread_id, my_core_id, my_package_id;
1494
1495 my_package_id = get_physical_package_id(cpu_id);
1496 my_core_id = get_core_id(cpu_id);
1497
1498 if (cpu_is_first_sibling_in_core(cpu_id)) {
1499 my_thread_id = 0;
1500 topo.num_cores++;
1501 } else {
1502 my_thread_id = 1;
1503 }
1504
1505 init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1506 init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
1507 return 0;
1508}
1509
1510void allocate_output_buffer()
1511{
1512 output_buffer = calloc(1, (1 + topo.num_cpus) * 128);
1513 outp = output_buffer;
1514 if (outp == NULL) {
1515 perror("calloc");
1516 exit(-1);
1517 }
1518}
1519
1520void setup_all_buffers(void)
1521{
1522 topology_probe();
1523 allocate_counters(&thread_even, &core_even, &package_even);
1524 allocate_counters(&thread_odd, &core_odd, &package_odd);
1525 allocate_output_buffer();
1526 for_all_proc_cpus(initialize_counters);
1527}
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1528void turbostat_init()
1529{
1530 check_cpuid();
1531
1532 check_dev_msr();
1533 check_super_user();
1534
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1535 setup_all_buffers();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1536
1537 if (verbose)
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1538 print_verbose_header();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1539}
1540
1541int fork_it(char **argv)
1542{
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1543 pid_t child_pid;
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1544 int status;
Len Brownd15cf7c2012-06-03 23:24:00 -0400[diff] [blame]1545
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1546 status = for_all_cpus(get_counters, EVEN_COUNTERS);
1547 if (status)
1548 exit(status);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1549 /* clear affinity side-effect of get_counters() */
1550 sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1551 gettimeofday(&tv_even, (struct timezone *)NULL);
1552
1553 child_pid = fork();
1554 if (!child_pid) {
1555 /* child */
1556 execvp(argv[0], argv);
1557 } else {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1558
1559 /* parent */
1560 if (child_pid == -1) {
1561 perror("fork");
1562 exit(1);
1563 }
1564
1565 signal(SIGINT, SIG_IGN);
1566 signal(SIGQUIT, SIG_IGN);
1567 if (waitpid(child_pid, &status, 0) == -1) {
1568 perror("wait");
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1569 exit(status);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1570 }
1571 }
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1572 /*
1573 * n.b. fork_it() does not check for errors from for_all_cpus()
1574 * because re-starting is problematic when forking
1575 */
1576 for_all_cpus(get_counters, ODD_COUNTERS);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1577 gettimeofday(&tv_odd, (struct timezone *)NULL);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1578 timersub(&tv_odd, &tv_even, &tv_delta);
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1579 for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
1580 compute_average(EVEN_COUNTERS);
1581 format_all_counters(EVEN_COUNTERS);
1582 flush_stderr();
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1583
Justin P. Mattock6eab04a2011-04-08 19:49:08 -0700[diff] [blame]1584 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]1585
Len Brownd91bb172012-11-01 00:08:19 -0400[diff] [blame]1586 return status;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1587}
1588
1589void cmdline(int argc, char **argv)
1590{
1591 int opt;
1592
1593 progname = argv[0];
1594
Len Brown39300ff2012-11-01 00:16:34 -0400[diff] [blame]1595 while ((opt = getopt(argc, argv, "+pPSvi:sc:sC:m:M:")) != -1) {
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1596 switch (opt) {
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1597 case 'p':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1598 show_core_only++;
1599 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1600 case 'P':
Len Brownc98d5d92012-06-04 00:56:40 -0400[diff] [blame]1601 show_pkg_only++;
1602 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1603 case 'S':
Len Browne23da032012-02-06 18:37:16 -0500[diff] [blame]1604 summary_only++;
1605 break;
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1606 case 'v':
1607 verbose++;
1608 break;
1609 case 'i':
1610 interval_sec = atoi(optarg);
1611 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1612 case 'c':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1613 sscanf(optarg, "%x", &extra_delta_offset32);
1614 break;
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1615 case 's':
1616 extra_delta_offset32 = 0x34; /* SMI counter */
1617 break;
1618 case 'C':
Len Brown8e180f32012-09-22 01:25:08 -0400[diff] [blame]1619 sscanf(optarg, "%x", &extra_delta_offset64);
1620 break;
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1621 case 'm':
1622 sscanf(optarg, "%x", &extra_msr_offset32);
Len Brown2f32edf2012-09-21 23:45:46 -0400[diff] [blame]1623 break;
1624 case 'M':
1625 sscanf(optarg, "%x", &extra_msr_offset64);
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1626 break;
1627 default:
1628 usage();
1629 }
1630 }
1631}
1632
1633int main(int argc, char **argv)
1634{
1635 cmdline(argc, argv);
1636
1637 if (verbose > 1)
Len Brownf9240812012-10-06 15:26:31 -0400[diff] [blame]1638 fprintf(stderr, "turbostat v2.1 October 6, 2012"
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1639 " - Len Brown <lenb@kernel.org>\n");
Len Brown103a8fe2010-10-22 23:53:03 -0400[diff] [blame]1640
1641 turbostat_init();
1642
1643 /*
1644 * if any params left, it must be a command to fork
1645 */
1646 if (argc - optind)
1647 return fork_it(argv + optind);
1648 else
1649 turbostat_loop();
1650
1651 return 0;
1652}