Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 1 | /* |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 2 | * builtin-stat.c |
| 3 | * |
| 4 | * Builtin stat command: Give a precise performance counters summary |
| 5 | * overview about any workload, CPU or specific PID. |
| 6 | * |
| 7 | * Sample output: |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 8 | |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 9 | $ perf stat ~/hackbench 10 |
| 10 | Time: 0.104 |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 11 | |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 12 | Performance counter stats for '/home/mingo/hackbench': |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 13 | |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 14 | 1255.538611 task clock ticks # 10.143 CPU utilization factor |
| 15 | 54011 context switches # 0.043 M/sec |
| 16 | 385 CPU migrations # 0.000 M/sec |
| 17 | 17755 pagefaults # 0.014 M/sec |
| 18 | 3808323185 CPU cycles # 3033.219 M/sec |
| 19 | 1575111190 instructions # 1254.530 M/sec |
| 20 | 17367895 cache references # 13.833 M/sec |
| 21 | 7674421 cache misses # 6.112 M/sec |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 22 | |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 23 | Wall-clock time elapsed: 123.786620 msecs |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 24 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 25 | * |
| 26 | * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com> |
| 27 | * |
| 28 | * Improvements and fixes by: |
| 29 | * |
| 30 | * Arjan van de Ven <arjan@linux.intel.com> |
| 31 | * Yanmin Zhang <yanmin.zhang@intel.com> |
| 32 | * Wu Fengguang <fengguang.wu@intel.com> |
| 33 | * Mike Galbraith <efault@gmx.de> |
| 34 | * Paul Mackerras <paulus@samba.org> |
Jaswinder Singh Rajput | 6e750a8f | 2009-06-27 03:02:07 +0530 | [diff] [blame] | 35 | * Jaswinder Singh Rajput <jaswinder@kernel.org> |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 36 | * |
| 37 | * Released under the GPL v2. (and only v2, not any later version) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 38 | */ |
| 39 | |
Peter Zijlstra | 1a482f3 | 2009-05-23 18:28:58 +0200 | [diff] [blame] | 40 | #include "perf.h" |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 41 | #include "builtin.h" |
Ingo Molnar | 148be2c | 2009-04-27 08:02:14 +0200 | [diff] [blame] | 42 | #include "util/util.h" |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 43 | #include "util/parse-options.h" |
| 44 | #include "util/parse-events.h" |
Frederic Weisbecker | 8f28827a | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 45 | #include "util/event.h" |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 46 | #include "util/evlist.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 47 | #include "util/evsel.h" |
Frederic Weisbecker | 8f28827a | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 48 | #include "util/debug.h" |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 49 | #include "util/header.h" |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 50 | #include "util/cpumap.h" |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 51 | #include "util/thread.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 52 | #include "util/thread_map.h" |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 53 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 54 | #include <sys/prctl.h> |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 55 | #include <math.h> |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 56 | #include <locale.h> |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 57 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 58 | #define DEFAULT_SEPARATOR " " |
| 59 | |
Ingo Molnar | cdd6c48 | 2009-09-21 12:02:48 +0200 | [diff] [blame] | 60 | static struct perf_event_attr default_attrs[] = { |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 61 | |
Ingo Molnar | 56aab46 | 2009-10-19 13:27:08 +0200 | [diff] [blame] | 62 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
| 63 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, |
| 64 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, |
| 65 | { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 66 | |
Ingo Molnar | 56aab46 | 2009-10-19 13:27:08 +0200 | [diff] [blame] | 67 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
Ingo Molnar | 1fc570a | 2011-04-27 05:20:22 +0200 | [diff] [blame^] | 68 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES }, |
Ingo Molnar | 56aab46 | 2009-10-19 13:27:08 +0200 | [diff] [blame] | 69 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
Ingo Molnar | 56aab46 | 2009-10-19 13:27:08 +0200 | [diff] [blame] | 70 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
| 71 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, |
Peter Zijlstra | f4dbfa8 | 2009-06-11 14:06:28 +0200 | [diff] [blame] | 72 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 73 | }; |
| 74 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 75 | struct perf_evlist *evsel_list; |
| 76 | |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 77 | static bool system_wide = false; |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 78 | static int run_idx = 0; |
| 79 | |
| 80 | static int run_count = 1; |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 81 | static bool no_inherit = false; |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 82 | static bool scale = true; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 83 | static bool no_aggr = false; |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 84 | static pid_t target_pid = -1; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 85 | static pid_t target_tid = -1; |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 86 | static pid_t child_pid = -1; |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 87 | static bool null_run = false; |
Arnaldo Carvalho de Melo | 201e0b0 | 2010-12-01 17:53:27 -0200 | [diff] [blame] | 88 | static bool big_num = true; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 89 | static int big_num_opt = -1; |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 90 | static const char *cpu_list; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 91 | static const char *csv_sep = NULL; |
| 92 | static bool csv_output = false; |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 93 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 94 | static volatile int done = 0; |
| 95 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 96 | struct stats |
| 97 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 98 | double n, mean, M2; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 99 | }; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 100 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 101 | struct perf_stat { |
| 102 | struct stats res_stats[3]; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 103 | }; |
| 104 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 105 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 106 | { |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 107 | evsel->priv = zalloc(sizeof(struct perf_stat)); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 108 | return evsel->priv == NULL ? -ENOMEM : 0; |
| 109 | } |
| 110 | |
| 111 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) |
| 112 | { |
| 113 | free(evsel->priv); |
| 114 | evsel->priv = NULL; |
| 115 | } |
| 116 | |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 117 | static void update_stats(struct stats *stats, u64 val) |
| 118 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 119 | double delta; |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 120 | |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 121 | stats->n++; |
| 122 | delta = val - stats->mean; |
| 123 | stats->mean += delta / stats->n; |
| 124 | stats->M2 += delta*(val - stats->mean); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 125 | } |
| 126 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 127 | static double avg_stats(struct stats *stats) |
| 128 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 129 | return stats->mean; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 130 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 131 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 132 | /* |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 133 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
| 134 | * |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 135 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
| 136 | * s^2 = ------------------------------- |
| 137 | * n - 1 |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 138 | * |
| 139 | * http://en.wikipedia.org/wiki/Stddev |
| 140 | * |
| 141 | * The std dev of the mean is related to the std dev by: |
| 142 | * |
| 143 | * s |
| 144 | * s_mean = ------- |
| 145 | * sqrt(n) |
| 146 | * |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 147 | */ |
| 148 | static double stddev_stats(struct stats *stats) |
| 149 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 150 | double variance = stats->M2 / (stats->n - 1); |
| 151 | double variance_mean = variance / stats->n; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 152 | |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 153 | return sqrt(variance_mean); |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 154 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 155 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 156 | struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
| 157 | struct stats runtime_cycles_stats[MAX_NR_CPUS]; |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 158 | struct stats runtime_stalled_cycles_stats[MAX_NR_CPUS]; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 159 | struct stats runtime_branches_stats[MAX_NR_CPUS]; |
Ingo Molnar | d58f4c8 | 2011-04-27 03:42:18 +0200 | [diff] [blame] | 160 | struct stats runtime_cacherefs_stats[MAX_NR_CPUS]; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 161 | struct stats walltime_nsecs_stats; |
Ingo Molnar | be1ac0d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 162 | |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 163 | static int create_perf_stat_counter(struct perf_evsel *evsel) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 164 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 165 | struct perf_event_attr *attr = &evsel->attr; |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 166 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 167 | if (scale) |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 168 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
| 169 | PERF_FORMAT_TOTAL_TIME_RUNNING; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 170 | |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 171 | attr->inherit = !no_inherit; |
Arnaldo Carvalho de Melo | 5d2cd90 | 2011-04-14 11:20:14 -0300 | [diff] [blame] | 172 | |
| 173 | if (system_wide) |
| 174 | return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false); |
| 175 | |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 176 | if (target_pid == -1 && target_tid == -1) { |
| 177 | attr->disabled = 1; |
| 178 | attr->enable_on_exec = 1; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 179 | } |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 180 | |
Arnaldo Carvalho de Melo | 5d2cd90 | 2011-04-14 11:20:14 -0300 | [diff] [blame] | 181 | return perf_evsel__open_per_thread(evsel, evsel_list->threads, false); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 182 | } |
| 183 | |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 184 | /* |
| 185 | * Does the counter have nsecs as a unit? |
| 186 | */ |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 187 | static inline int nsec_counter(struct perf_evsel *evsel) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 188 | { |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 189 | if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) || |
| 190 | perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 191 | return 1; |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | /* |
Ingo Molnar | dcd9936 | 2011-04-27 04:36:37 +0200 | [diff] [blame] | 197 | * Update various tracking values we maintain to print |
| 198 | * more semantic information such as miss/hit ratios, |
| 199 | * instruction rates, etc: |
| 200 | */ |
| 201 | static void update_shadow_stats(struct perf_evsel *counter, u64 *count) |
| 202 | { |
| 203 | if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK)) |
| 204 | update_stats(&runtime_nsecs_stats[0], count[0]); |
| 205 | else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) |
| 206 | update_stats(&runtime_cycles_stats[0], count[0]); |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 207 | else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES)) |
| 208 | update_stats(&runtime_stalled_cycles_stats[0], count[0]); |
Ingo Molnar | dcd9936 | 2011-04-27 04:36:37 +0200 | [diff] [blame] | 209 | else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
| 210 | update_stats(&runtime_branches_stats[0], count[0]); |
| 211 | else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) |
| 212 | update_stats(&runtime_cacherefs_stats[0], count[0]); |
| 213 | } |
| 214 | |
| 215 | /* |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 216 | * Read out the results of a single counter: |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 217 | * aggregate counts across CPUs in system-wide mode |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 218 | */ |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 219 | static int read_counter_aggr(struct perf_evsel *counter) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 220 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 221 | struct perf_stat *ps = counter->priv; |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 222 | u64 *count = counter->counts->aggr.values; |
| 223 | int i; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 224 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 225 | if (__perf_evsel__read(counter, evsel_list->cpus->nr, |
| 226 | evsel_list->threads->nr, scale) < 0) |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 227 | return -1; |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 228 | |
| 229 | for (i = 0; i < 3; i++) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 230 | update_stats(&ps->res_stats[i], count[i]); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 231 | |
| 232 | if (verbose) { |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 233 | fprintf(stderr, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
| 234 | event_name(counter), count[0], count[1], count[2]); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 235 | } |
| 236 | |
Ingo Molnar | be1ac0d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 237 | /* |
| 238 | * Save the full runtime - to allow normalization during printout: |
| 239 | */ |
Ingo Molnar | dcd9936 | 2011-04-27 04:36:37 +0200 | [diff] [blame] | 240 | update_shadow_stats(counter, count); |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 241 | |
| 242 | return 0; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | /* |
| 246 | * Read out the results of a single counter: |
| 247 | * do not aggregate counts across CPUs in system-wide mode |
| 248 | */ |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 249 | static int read_counter(struct perf_evsel *counter) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 250 | { |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 251 | u64 *count; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 252 | int cpu; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 253 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 254 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 255 | if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0) |
| 256 | return -1; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 257 | |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 258 | count = counter->counts->cpu[cpu].values; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 259 | |
Ingo Molnar | dcd9936 | 2011-04-27 04:36:37 +0200 | [diff] [blame] | 260 | update_shadow_stats(counter, count); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 261 | } |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 262 | |
| 263 | return 0; |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 264 | } |
| 265 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 266 | static int run_perf_stat(int argc __used, const char **argv) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 267 | { |
| 268 | unsigned long long t0, t1; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 269 | struct perf_evsel *counter; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 270 | int status = 0; |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 271 | int child_ready_pipe[2], go_pipe[2]; |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 272 | const bool forks = (argc > 0); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 273 | char buf; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 274 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 275 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 276 | perror("failed to create pipes"); |
| 277 | exit(1); |
| 278 | } |
| 279 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 280 | if (forks) { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 281 | if ((child_pid = fork()) < 0) |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 282 | perror("failed to fork"); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 283 | |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 284 | if (!child_pid) { |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 285 | close(child_ready_pipe[0]); |
| 286 | close(go_pipe[1]); |
| 287 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); |
| 288 | |
| 289 | /* |
| 290 | * Do a dummy execvp to get the PLT entry resolved, |
| 291 | * so we avoid the resolver overhead on the real |
| 292 | * execvp call. |
| 293 | */ |
| 294 | execvp("", (char **)argv); |
| 295 | |
| 296 | /* |
| 297 | * Tell the parent we're ready to go |
| 298 | */ |
| 299 | close(child_ready_pipe[1]); |
| 300 | |
| 301 | /* |
| 302 | * Wait until the parent tells us to go. |
| 303 | */ |
| 304 | if (read(go_pipe[0], &buf, 1) == -1) |
| 305 | perror("unable to read pipe"); |
| 306 | |
| 307 | execvp(argv[0], (char **)argv); |
| 308 | |
| 309 | perror(argv[0]); |
| 310 | exit(-1); |
| 311 | } |
| 312 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 313 | if (target_tid == -1 && target_pid == -1 && !system_wide) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 314 | evsel_list->threads->map[0] = child_pid; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 315 | |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 316 | /* |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 317 | * Wait for the child to be ready to exec. |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 318 | */ |
| 319 | close(child_ready_pipe[1]); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 320 | close(go_pipe[0]); |
| 321 | if (read(child_ready_pipe[0], &buf, 1) == -1) |
Frederic Weisbecker | a92bef0 | 2009-07-01 21:02:10 +0200 | [diff] [blame] | 322 | perror("unable to read pipe"); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 323 | close(child_ready_pipe[0]); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 324 | } |
| 325 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 326 | list_for_each_entry(counter, &evsel_list->entries, node) { |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 327 | if (create_perf_stat_counter(counter) < 0) { |
| 328 | if (errno == -EPERM || errno == -EACCES) { |
| 329 | error("You may not have permission to collect %sstats.\n" |
| 330 | "\t Consider tweaking" |
| 331 | " /proc/sys/kernel/perf_event_paranoid or running as root.", |
| 332 | system_wide ? "system-wide " : ""); |
David Ahern | 5a3446b | 2011-01-09 11:21:12 -0700 | [diff] [blame] | 333 | } else if (errno == ENOENT) { |
| 334 | error("%s event is not supported. ", event_name(counter)); |
Arnaldo Carvalho de Melo | 4829060 | 2011-01-03 17:48:12 -0200 | [diff] [blame] | 335 | } else { |
| 336 | error("open_counter returned with %d (%s). " |
| 337 | "/bin/dmesg may provide additional information.\n", |
| 338 | errno, strerror(errno)); |
| 339 | } |
| 340 | if (child_pid != -1) |
| 341 | kill(child_pid, SIGTERM); |
| 342 | die("Not all events could be opened.\n"); |
| 343 | return -1; |
| 344 | } |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 345 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 346 | |
Frederic Weisbecker | cfd748a | 2011-03-14 16:40:30 +0100 | [diff] [blame] | 347 | if (perf_evlist__set_filters(evsel_list)) { |
| 348 | error("failed to set filter with %d (%s)\n", errno, |
| 349 | strerror(errno)); |
| 350 | return -1; |
| 351 | } |
| 352 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 353 | /* |
| 354 | * Enable counters and exec the command: |
| 355 | */ |
| 356 | t0 = rdclock(); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 357 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 358 | if (forks) { |
| 359 | close(go_pipe[1]); |
| 360 | wait(&status); |
| 361 | } else { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 362 | while(!done) sleep(1); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 363 | } |
Ingo Molnar | 44db76c | 2009-06-03 19:36:07 +0200 | [diff] [blame] | 364 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 365 | t1 = rdclock(); |
| 366 | |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 367 | update_stats(&walltime_nsecs_stats, t1 - t0); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 368 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 369 | if (no_aggr) { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 370 | list_for_each_entry(counter, &evsel_list->entries, node) { |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 371 | read_counter(counter); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 372 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1); |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 373 | } |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 374 | } else { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 375 | list_for_each_entry(counter, &evsel_list->entries, node) { |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 376 | read_counter_aggr(counter); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 377 | perf_evsel__close_fd(counter, evsel_list->cpus->nr, |
| 378 | evsel_list->threads->nr); |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 379 | } |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 380 | } |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 381 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 382 | return WEXITSTATUS(status); |
| 383 | } |
| 384 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 385 | static void print_noise(struct perf_evsel *evsel, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 386 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 387 | struct perf_stat *ps; |
| 388 | |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 389 | if (run_count == 1) |
| 390 | return; |
| 391 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 392 | ps = evsel->priv; |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 393 | fprintf(stderr, " ( +- %7.3f%% )", |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 394 | 100 * stddev_stats(&ps->res_stats[0]) / avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 395 | } |
| 396 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 397 | static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 398 | { |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 399 | double msecs = avg / 1e6; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 400 | char cpustr[16] = { '\0', }; |
| 401 | const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-24s"; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 402 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 403 | if (no_aggr) |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 404 | sprintf(cpustr, "CPU%*d%s", |
| 405 | csv_output ? 0 : -4, |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 406 | evsel_list->cpus->map[cpu], csv_sep); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 407 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 408 | fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(evsel)); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 409 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 410 | if (evsel->cgrp) |
| 411 | fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name); |
| 412 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 413 | if (csv_output) |
| 414 | return; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 415 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 416 | if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 417 | fprintf(stderr, " # %8.3f CPUs utilized ", avg / avg_stats(&walltime_nsecs_stats)); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 418 | } |
| 419 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 420 | static void abs_printout(int cpu, struct perf_evsel *evsel, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 421 | { |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 422 | double total, ratio = 0.0; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 423 | char cpustr[16] = { '\0', }; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 424 | const char *fmt; |
| 425 | |
| 426 | if (csv_output) |
| 427 | fmt = "%s%.0f%s%s"; |
| 428 | else if (big_num) |
| 429 | fmt = "%s%'18.0f%s%-24s"; |
| 430 | else |
| 431 | fmt = "%s%18.0f%s%-24s"; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 432 | |
| 433 | if (no_aggr) |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 434 | sprintf(cpustr, "CPU%*d%s", |
| 435 | csv_output ? 0 : -4, |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 436 | evsel_list->cpus->map[cpu], csv_sep); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 437 | else |
| 438 | cpu = 0; |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 439 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 440 | fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(evsel)); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 441 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 442 | if (evsel->cgrp) |
| 443 | fprintf(stderr, "%s%s", csv_sep, evsel->cgrp->name); |
| 444 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 445 | if (csv_output) |
| 446 | return; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 447 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 448 | if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 449 | total = avg_stats(&runtime_cycles_stats[cpu]); |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 450 | |
| 451 | if (total) |
| 452 | ratio = avg / total; |
| 453 | |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 454 | fprintf(stderr, " # %4.2f insns per cycle", ratio); |
| 455 | |
| 456 | total = avg_stats(&runtime_stalled_cycles_stats[cpu]); |
| 457 | |
| 458 | if (total && avg) { |
| 459 | ratio = total / avg; |
| 460 | fprintf(stderr, "\n # %4.2f stalled cycles per insn", ratio); |
| 461 | } |
| 462 | |
Arnaldo Carvalho de Melo | daec78a | 2011-01-03 16:49:44 -0200 | [diff] [blame] | 463 | } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) && |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 464 | runtime_branches_stats[cpu].n != 0) { |
| 465 | total = avg_stats(&runtime_branches_stats[cpu]); |
Anton Blanchard | 1101820 | 2009-10-18 22:29:23 +1100 | [diff] [blame] | 466 | |
| 467 | if (total) |
| 468 | ratio = avg * 100 / total; |
| 469 | |
Ingo Molnar | 1fc570a | 2011-04-27 05:20:22 +0200 | [diff] [blame^] | 470 | fprintf(stderr, " # %5.2f %% of all branches ", ratio); |
Anton Blanchard | 1101820 | 2009-10-18 22:29:23 +1100 | [diff] [blame] | 471 | |
Ingo Molnar | d58f4c8 | 2011-04-27 03:42:18 +0200 | [diff] [blame] | 472 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) && |
| 473 | runtime_cacherefs_stats[cpu].n != 0) { |
| 474 | total = avg_stats(&runtime_cacherefs_stats[cpu]); |
| 475 | |
| 476 | if (total) |
| 477 | ratio = avg * 100 / total; |
| 478 | |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 479 | fprintf(stderr, " # %8.3f %% of all cache refs ", ratio); |
Ingo Molnar | d58f4c8 | 2011-04-27 03:42:18 +0200 | [diff] [blame] | 480 | |
Ingo Molnar | 11ba2b8 | 2011-04-24 15:05:10 +0200 | [diff] [blame] | 481 | } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES)) { |
| 482 | total = avg_stats(&runtime_cycles_stats[cpu]); |
| 483 | |
| 484 | if (total) |
| 485 | ratio = avg / total * 100.0; |
| 486 | |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 487 | fprintf(stderr, " # %5.2f%% of all cycles are idle ", ratio); |
| 488 | } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
| 489 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
| 490 | |
| 491 | if (total) |
| 492 | ratio = 1.0 * avg / total; |
| 493 | |
| 494 | fprintf(stderr, " # %8.3f GHz ", ratio); |
| 495 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
| 496 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
| 497 | |
| 498 | if (total) |
| 499 | ratio = 1000.0 * avg / total; |
| 500 | |
| 501 | fprintf(stderr, " # %8.3f M/sec ", ratio); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 502 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | /* |
| 506 | * Print out the results of a single counter: |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 507 | * aggregated counts in system-wide mode |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 508 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 509 | static void print_counter_aggr(struct perf_evsel *counter) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 510 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 511 | struct perf_stat *ps = counter->priv; |
| 512 | double avg = avg_stats(&ps->res_stats[0]); |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 513 | int scaled = counter->counts->scaled; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 514 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 515 | if (scaled == -1) { |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 516 | fprintf(stderr, "%*s%s%*s", |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 517 | csv_output ? 0 : 18, |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 518 | "<not counted>", |
| 519 | csv_sep, |
| 520 | csv_output ? 0 : -24, |
| 521 | event_name(counter)); |
| 522 | |
| 523 | if (counter->cgrp) |
| 524 | fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name); |
| 525 | |
| 526 | fputc('\n', stderr); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 527 | return; |
| 528 | } |
| 529 | |
| 530 | if (nsec_counter(counter)) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 531 | nsec_printout(-1, counter, avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 532 | else |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 533 | abs_printout(-1, counter, avg); |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 534 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 535 | if (csv_output) { |
| 536 | fputc('\n', stderr); |
| 537 | return; |
| 538 | } |
| 539 | |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 540 | print_noise(counter, avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 541 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 542 | if (scaled) { |
| 543 | double avg_enabled, avg_running; |
| 544 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 545 | avg_enabled = avg_stats(&ps->res_stats[1]); |
| 546 | avg_running = avg_stats(&ps->res_stats[2]); |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 547 | |
Ingo Molnar | 210ad39 | 2009-06-29 21:50:54 +0200 | [diff] [blame] | 548 | fprintf(stderr, " (scaled from %.2f%%)", |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 549 | 100 * avg_running / avg_enabled); |
| 550 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 551 | fprintf(stderr, "\n"); |
| 552 | } |
| 553 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 554 | /* |
| 555 | * Print out the results of a single counter: |
| 556 | * does not use aggregated count in system-wide |
| 557 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 558 | static void print_counter(struct perf_evsel *counter) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 559 | { |
| 560 | u64 ena, run, val; |
| 561 | int cpu; |
| 562 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 563 | for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) { |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 564 | val = counter->counts->cpu[cpu].val; |
| 565 | ena = counter->counts->cpu[cpu].ena; |
| 566 | run = counter->counts->cpu[cpu].run; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 567 | if (run == 0 || ena == 0) { |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 568 | fprintf(stderr, "CPU%*d%s%*s%s%*s", |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 569 | csv_output ? 0 : -4, |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 570 | evsel_list->cpus->map[cpu], csv_sep, |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 571 | csv_output ? 0 : 18, |
| 572 | "<not counted>", csv_sep, |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 573 | csv_output ? 0 : -24, |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 574 | event_name(counter)); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 575 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 576 | if (counter->cgrp) |
| 577 | fprintf(stderr, "%s%s", csv_sep, counter->cgrp->name); |
| 578 | |
| 579 | fputc('\n', stderr); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 580 | continue; |
| 581 | } |
| 582 | |
| 583 | if (nsec_counter(counter)) |
| 584 | nsec_printout(cpu, counter, val); |
| 585 | else |
| 586 | abs_printout(cpu, counter, val); |
| 587 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 588 | if (!csv_output) { |
| 589 | print_noise(counter, 1.0); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 590 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 591 | if (run != ena) { |
| 592 | fprintf(stderr, " (scaled from %.2f%%)", |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 593 | 100.0 * run / ena); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 594 | } |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 595 | } |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 596 | fputc('\n', stderr); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 597 | } |
| 598 | } |
| 599 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 600 | static void print_stat(int argc, const char **argv) |
| 601 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 602 | struct perf_evsel *counter; |
| 603 | int i; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 604 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 605 | fflush(stdout); |
| 606 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 607 | if (!csv_output) { |
| 608 | fprintf(stderr, "\n"); |
| 609 | fprintf(stderr, " Performance counter stats for "); |
| 610 | if(target_pid == -1 && target_tid == -1) { |
| 611 | fprintf(stderr, "\'%s", argv[0]); |
| 612 | for (i = 1; i < argc; i++) |
| 613 | fprintf(stderr, " %s", argv[i]); |
| 614 | } else if (target_pid != -1) |
| 615 | fprintf(stderr, "process id \'%d", target_pid); |
| 616 | else |
| 617 | fprintf(stderr, "thread id \'%d", target_tid); |
Ingo Molnar | 44db76c | 2009-06-03 19:36:07 +0200 | [diff] [blame] | 618 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 619 | fprintf(stderr, "\'"); |
| 620 | if (run_count > 1) |
| 621 | fprintf(stderr, " (%d runs)", run_count); |
| 622 | fprintf(stderr, ":\n\n"); |
| 623 | } |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 624 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 625 | if (no_aggr) { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 626 | list_for_each_entry(counter, &evsel_list->entries, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 627 | print_counter(counter); |
| 628 | } else { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 629 | list_for_each_entry(counter, &evsel_list->entries, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 630 | print_counter_aggr(counter); |
| 631 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 632 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 633 | if (!csv_output) { |
| 634 | fprintf(stderr, "\n"); |
| 635 | fprintf(stderr, " %18.9f seconds time elapsed", |
| 636 | avg_stats(&walltime_nsecs_stats)/1e9); |
| 637 | if (run_count > 1) { |
Ingo Molnar | 481f988 | 2011-04-27 04:34:16 +0200 | [diff] [blame] | 638 | fprintf(stderr, " ( +-%5.2f%% )", |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 639 | 100*stddev_stats(&walltime_nsecs_stats) / |
| 640 | avg_stats(&walltime_nsecs_stats)); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 641 | } |
| 642 | fprintf(stderr, "\n\n"); |
Ingo Molnar | 566747e | 2009-06-27 06:24:32 +0200 | [diff] [blame] | 643 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 644 | } |
| 645 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 646 | static volatile int signr = -1; |
| 647 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 648 | static void skip_signal(int signo) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 649 | { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 650 | if(child_pid == -1) |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 651 | done = 1; |
| 652 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 653 | signr = signo; |
| 654 | } |
| 655 | |
| 656 | static void sig_atexit(void) |
| 657 | { |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 658 | if (child_pid != -1) |
| 659 | kill(child_pid, SIGTERM); |
| 660 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 661 | if (signr == -1) |
| 662 | return; |
| 663 | |
| 664 | signal(signr, SIG_DFL); |
| 665 | kill(getpid(), signr); |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 666 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 667 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 668 | static const char * const stat_usage[] = { |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 669 | "perf stat [<options>] [<command>]", |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 670 | NULL |
| 671 | }; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 672 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 673 | static int stat__set_big_num(const struct option *opt __used, |
| 674 | const char *s __used, int unset) |
| 675 | { |
| 676 | big_num_opt = unset ? 0 : 1; |
| 677 | return 0; |
| 678 | } |
| 679 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 680 | static const struct option options[] = { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 681 | OPT_CALLBACK('e', "event", &evsel_list, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 682 | "event selector. use 'perf list' to list available events", |
| 683 | parse_events), |
Frederic Weisbecker | cfd748a | 2011-03-14 16:40:30 +0100 | [diff] [blame] | 684 | OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
| 685 | "event filter", parse_filter), |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 686 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
| 687 | "child tasks do not inherit counters"), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 688 | OPT_INTEGER('p', "pid", &target_pid, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 689 | "stat events on existing process id"), |
| 690 | OPT_INTEGER('t', "tid", &target_tid, |
| 691 | "stat events on existing thread id"), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 692 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 693 | "system-wide collection from all CPUs"), |
Brice Goglin | b26bc5a | 2009-08-07 10:18:39 +0200 | [diff] [blame] | 694 | OPT_BOOLEAN('c', "scale", &scale, |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 695 | "scale/normalize counters"), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 696 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 743ee1f | 2009-06-07 17:06:46 +0200 | [diff] [blame] | 697 | "be more verbose (show counter open errors, etc)"), |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 698 | OPT_INTEGER('r', "repeat", &run_count, |
| 699 | "repeat command and print average + stddev (max: 100)"), |
Ingo Molnar | 0cfb7a1 | 2009-06-27 06:10:30 +0200 | [diff] [blame] | 700 | OPT_BOOLEAN('n', "null", &null_run, |
| 701 | "null run - dont start any counters"), |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 702 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
| 703 | "print large numbers with thousands\' separators", |
| 704 | stat__set_big_num), |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 705 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
| 706 | "list of cpus to monitor in system-wide"), |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 707 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
| 708 | "disable CPU count aggregation"), |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 709 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
| 710 | "print counts with custom separator"), |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 711 | OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
| 712 | "monitor event in cgroup name only", |
| 713 | parse_cgroups), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 714 | OPT_END() |
| 715 | }; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 716 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 717 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 718 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 719 | struct perf_evsel *pos; |
| 720 | int status = -ENOMEM; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 721 | |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 722 | setlocale(LC_ALL, ""); |
| 723 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 724 | evsel_list = perf_evlist__new(NULL, NULL); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 725 | if (evsel_list == NULL) |
| 726 | return -ENOMEM; |
| 727 | |
Anton Blanchard | a054123 | 2009-07-22 23:04:12 +1000 | [diff] [blame] | 728 | argc = parse_options(argc, argv, options, stat_usage, |
| 729 | PARSE_OPT_STOP_AT_NON_OPTION); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 730 | |
| 731 | if (csv_sep) |
| 732 | csv_output = true; |
| 733 | else |
| 734 | csv_sep = DEFAULT_SEPARATOR; |
| 735 | |
| 736 | /* |
| 737 | * let the spreadsheet do the pretty-printing |
| 738 | */ |
| 739 | if (csv_output) { |
| 740 | /* User explicitely passed -B? */ |
| 741 | if (big_num_opt == 1) { |
| 742 | fprintf(stderr, "-B option not supported with -x\n"); |
| 743 | usage_with_options(stat_usage, options); |
| 744 | } else /* Nope, so disable big number formatting */ |
| 745 | big_num = false; |
| 746 | } else if (big_num_opt == 0) /* User passed --no-big-num */ |
| 747 | big_num = false; |
| 748 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 749 | if (!argc && target_pid == -1 && target_tid == -1) |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 750 | usage_with_options(stat_usage, options); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 751 | if (run_count <= 0) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 752 | usage_with_options(stat_usage, options); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 753 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 754 | /* no_aggr, cgroup are for system-wide only */ |
| 755 | if ((no_aggr || nr_cgroups) && !system_wide) { |
| 756 | fprintf(stderr, "both cgroup and no-aggregation " |
| 757 | "modes only available in system-wide mode\n"); |
| 758 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 759 | usage_with_options(stat_usage, options); |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 760 | } |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 761 | |
Jaswinder Singh Rajput | c304356 | 2009-06-27 23:49:09 +0530 | [diff] [blame] | 762 | /* Set attrs and nr_counters if no event is selected and !null_run */ |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 763 | if (!null_run && !evsel_list->nr_entries) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 764 | size_t c; |
| 765 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 766 | for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) { |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 767 | pos = perf_evsel__new(&default_attrs[c], c); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 768 | if (pos == NULL) |
| 769 | goto out; |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 770 | perf_evlist__add(evsel_list, pos); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 771 | } |
Jaswinder Singh Rajput | c304356 | 2009-06-27 23:49:09 +0530 | [diff] [blame] | 772 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 773 | |
Arnaldo Carvalho de Melo | 5c98d466 | 2011-01-03 17:53:33 -0200 | [diff] [blame] | 774 | if (target_pid != -1) |
| 775 | target_tid = target_pid; |
| 776 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 777 | evsel_list->threads = thread_map__new(target_pid, target_tid); |
| 778 | if (evsel_list->threads == NULL) { |
Arnaldo Carvalho de Melo | 5c98d466 | 2011-01-03 17:53:33 -0200 | [diff] [blame] | 779 | pr_err("Problems finding threads of monitor\n"); |
| 780 | usage_with_options(stat_usage, options); |
| 781 | } |
| 782 | |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 783 | if (system_wide) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 784 | evsel_list->cpus = cpu_map__new(cpu_list); |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 785 | else |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 786 | evsel_list->cpus = cpu_map__dummy_new(); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 787 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 788 | if (evsel_list->cpus == NULL) { |
Arnaldo Carvalho de Melo | 60d567e | 2011-01-03 17:49:48 -0200 | [diff] [blame] | 789 | perror("failed to parse CPUs map"); |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 790 | usage_with_options(stat_usage, options); |
Arnaldo Carvalho de Melo | 60d567e | 2011-01-03 17:49:48 -0200 | [diff] [blame] | 791 | return -1; |
| 792 | } |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 793 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 794 | list_for_each_entry(pos, &evsel_list->entries, node) { |
Arnaldo Carvalho de Melo | c52b12e | 2011-01-03 17:45:52 -0200 | [diff] [blame] | 795 | if (perf_evsel__alloc_stat_priv(pos) < 0 || |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 796 | perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0 || |
| 797 | perf_evsel__alloc_fd(pos, evsel_list->cpus->nr, evsel_list->threads->nr) < 0) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 798 | goto out_free_fd; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 799 | } |
| 800 | |
Ingo Molnar | 58d7e99 | 2009-05-15 11:03:23 +0200 | [diff] [blame] | 801 | /* |
| 802 | * We dont want to block the signals - that would cause |
| 803 | * child tasks to inherit that and Ctrl-C would not work. |
| 804 | * What we want is for Ctrl-C to work in the exec()-ed |
| 805 | * task, but being ignored by perf stat itself: |
| 806 | */ |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 807 | atexit(sig_atexit); |
Ingo Molnar | 58d7e99 | 2009-05-15 11:03:23 +0200 | [diff] [blame] | 808 | signal(SIGINT, skip_signal); |
| 809 | signal(SIGALRM, skip_signal); |
| 810 | signal(SIGABRT, skip_signal); |
| 811 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 812 | status = 0; |
| 813 | for (run_idx = 0; run_idx < run_count; run_idx++) { |
| 814 | if (run_count != 1 && verbose) |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 815 | fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 816 | status = run_perf_stat(argc, argv); |
| 817 | } |
| 818 | |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 819 | if (status != -1) |
| 820 | print_stat(argc, argv); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 821 | out_free_fd: |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 822 | list_for_each_entry(pos, &evsel_list->entries, node) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 823 | perf_evsel__free_stat_priv(pos); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 824 | perf_evlist__delete_maps(evsel_list); |
Arnaldo Carvalho de Melo | 0015e2e | 2011-02-01 16:18:10 -0200 | [diff] [blame] | 825 | out: |
| 826 | perf_evlist__delete(evsel_list); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 827 | return status; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 828 | } |