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 | 8f28827 | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 45 | #include "util/event.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 46 | #include "util/evsel.h" |
Frederic Weisbecker | 8f28827 | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 47 | #include "util/debug.h" |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 48 | #include "util/header.h" |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 49 | #include "util/cpumap.h" |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 50 | #include "util/thread.h" |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 51 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 52 | #include <sys/prctl.h> |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 53 | #include <math.h> |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 54 | #include <locale.h> |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 55 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 56 | #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y)) |
| 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 }, |
| 68 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
Ingo Molnar | 56aab46 | 2009-10-19 13:27:08 +0200 | [diff] [blame] | 69 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
| 70 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, |
Ingo Molnar | dd86e72 | 2009-10-19 13:33:03 +0200 | [diff] [blame] | 71 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_REFERENCES }, |
| 72 | { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CACHE_MISSES }, |
Peter Zijlstra | f4dbfa8 | 2009-06-11 14:06:28 +0200 | [diff] [blame] | 73 | |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 74 | }; |
| 75 | |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 76 | static bool system_wide = false; |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 77 | static int nr_cpus = 0; |
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; |
| 86 | static pid_t *all_tids = NULL; |
| 87 | static int thread_num = 0; |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 88 | static pid_t child_pid = -1; |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 89 | static bool null_run = false; |
Arnaldo Carvalho de Melo | 201e0b0 | 2010-12-01 17:53:27 -0200 | [diff] [blame] | 90 | static bool big_num = true; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 91 | static int big_num_opt = -1; |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 92 | static const char *cpu_list; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 93 | static const char *csv_sep = NULL; |
| 94 | static bool csv_output = false; |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 95 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 96 | struct cpu_counts { |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 97 | u64 val; |
| 98 | u64 ena; |
| 99 | u64 run; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 100 | }; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 101 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 102 | static volatile int done = 0; |
| 103 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 104 | struct stats |
| 105 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 106 | double n, mean, M2; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 107 | }; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 108 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 109 | struct perf_stat { |
| 110 | struct stats res_stats[3]; |
| 111 | int scaled; |
| 112 | struct cpu_counts cpu_counts[]; |
| 113 | }; |
| 114 | |
| 115 | static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel, int ncpus) |
| 116 | { |
| 117 | size_t priv_size = (sizeof(struct perf_stat) + |
| 118 | (ncpus * sizeof(struct cpu_counts))); |
| 119 | evsel->priv = zalloc(priv_size); |
| 120 | return evsel->priv == NULL ? -ENOMEM : 0; |
| 121 | } |
| 122 | |
| 123 | static void perf_evsel__free_stat_priv(struct perf_evsel *evsel) |
| 124 | { |
| 125 | free(evsel->priv); |
| 126 | evsel->priv = NULL; |
| 127 | } |
| 128 | |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 129 | static void update_stats(struct stats *stats, u64 val) |
| 130 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 131 | double delta; |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 132 | |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 133 | stats->n++; |
| 134 | delta = val - stats->mean; |
| 135 | stats->mean += delta / stats->n; |
| 136 | stats->M2 += delta*(val - stats->mean); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 137 | } |
| 138 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 139 | static double avg_stats(struct stats *stats) |
| 140 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 141 | return stats->mean; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 142 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 143 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 144 | /* |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 145 | * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance |
| 146 | * |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 147 | * (\Sum n_i^2) - ((\Sum n_i)^2)/n |
| 148 | * s^2 = ------------------------------- |
| 149 | * n - 1 |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 150 | * |
| 151 | * http://en.wikipedia.org/wiki/Stddev |
| 152 | * |
| 153 | * The std dev of the mean is related to the std dev by: |
| 154 | * |
| 155 | * s |
| 156 | * s_mean = ------- |
| 157 | * sqrt(n) |
| 158 | * |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 159 | */ |
| 160 | static double stddev_stats(struct stats *stats) |
| 161 | { |
Peter Zijlstra | 8a02631 | 2009-09-04 17:26:26 +0200 | [diff] [blame] | 162 | double variance = stats->M2 / (stats->n - 1); |
| 163 | double variance_mean = variance / stats->n; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 164 | |
Peter Zijlstra | 63d40de | 2009-09-04 17:03:13 +0200 | [diff] [blame] | 165 | return sqrt(variance_mean); |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 166 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 167 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 168 | struct stats runtime_nsecs_stats[MAX_NR_CPUS]; |
| 169 | struct stats runtime_cycles_stats[MAX_NR_CPUS]; |
| 170 | struct stats runtime_branches_stats[MAX_NR_CPUS]; |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 171 | struct stats walltime_nsecs_stats; |
Ingo Molnar | be1ac0d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 172 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 173 | #define MATCH_EVENT(t, c, evsel) \ |
| 174 | (evsel->attr.type == PERF_TYPE_##t && \ |
| 175 | evsel->attr.config == PERF_COUNT_##c) |
Jaswinder Singh Rajput | b9ebdcc | 2009-07-01 15:05:09 +0530 | [diff] [blame] | 176 | |
Jaswinder Singh Rajput | cca03c0a | 2009-06-23 17:12:49 +0530 | [diff] [blame] | 177 | #define ERR_PERF_OPEN \ |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 178 | "counter %d, sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information." |
Jaswinder Singh Rajput | cca03c0a | 2009-06-23 17:12:49 +0530 | [diff] [blame] | 179 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 180 | static int create_perf_stat_counter(struct perf_evsel *evsel, bool *perm_err) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 181 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 182 | struct perf_event_attr *attr = &evsel->attr; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 183 | int thread; |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 184 | int ncreated = 0; |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 185 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 186 | if (scale) |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 187 | attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | |
| 188 | PERF_FORMAT_TOTAL_TIME_RUNNING; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 189 | |
| 190 | if (system_wide) { |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 191 | int cpu; |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 192 | |
Jaswinder Singh Rajput | cca03c0a | 2009-06-23 17:12:49 +0530 | [diff] [blame] | 193 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 194 | FD(evsel, cpu, 0) = sys_perf_event_open(attr, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 195 | -1, cpumap[cpu], -1, 0); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 196 | if (FD(evsel, cpu, 0) < 0) { |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 197 | if (errno == EPERM || errno == EACCES) |
| 198 | *perm_err = true; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 199 | error(ERR_PERF_OPEN, evsel->idx, |
| 200 | FD(evsel, cpu, 0), strerror(errno)); |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 201 | } else { |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 202 | ++ncreated; |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 203 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 204 | } |
| 205 | } else { |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 206 | attr->inherit = !no_inherit; |
| 207 | if (target_pid == -1 && target_tid == -1) { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 208 | attr->disabled = 1; |
| 209 | attr->enable_on_exec = 1; |
| 210 | } |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 211 | for (thread = 0; thread < thread_num; thread++) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 212 | FD(evsel, 0, thread) = sys_perf_event_open(attr, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 213 | all_tids[thread], -1, -1, 0); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 214 | if (FD(evsel, 0, thread) < 0) { |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 215 | if (errno == EPERM || errno == EACCES) |
| 216 | *perm_err = true; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 217 | error(ERR_PERF_OPEN, evsel->idx, |
| 218 | FD(evsel, 0, thread), |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 219 | strerror(errno)); |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 220 | } else { |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 221 | ++ncreated; |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 222 | } |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 223 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 224 | } |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 225 | |
| 226 | return ncreated; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 227 | } |
| 228 | |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 229 | /* |
| 230 | * Does the counter have nsecs as a unit? |
| 231 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 232 | static inline int nsec_counter(struct perf_evsel *counter) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 233 | { |
Jaswinder Singh Rajput | b9ebdcc | 2009-07-01 15:05:09 +0530 | [diff] [blame] | 234 | if (MATCH_EVENT(SOFTWARE, SW_CPU_CLOCK, counter) || |
| 235 | MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 236 | return 1; |
| 237 | |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /* |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 242 | * Read out the results of a single counter: |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 243 | * aggregate counts across CPUs in system-wide mode |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 244 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 245 | static void read_counter_aggr(struct perf_evsel *counter) |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 246 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 247 | struct perf_stat *ps = counter->priv; |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 248 | u64 count[3], single_count[3]; |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 249 | int cpu; |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 250 | size_t res, nv; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 251 | int scaled; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 252 | int i, thread; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 253 | |
| 254 | count[0] = count[1] = count[2] = 0; |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 255 | |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 256 | nv = scale ? 3 : 1; |
Jaswinder Singh Rajput | cca03c0a | 2009-06-23 17:12:49 +0530 | [diff] [blame] | 257 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 258 | for (thread = 0; thread < thread_num; thread++) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 259 | if (FD(counter, cpu, thread) < 0) |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 260 | continue; |
Ingo Molnar | 743ee1f | 2009-06-07 17:06:46 +0200 | [diff] [blame] | 261 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 262 | res = read(FD(counter, cpu, thread), |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 263 | single_count, nv * sizeof(u64)); |
| 264 | assert(res == nv * sizeof(u64)); |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 265 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 266 | close(FD(counter, cpu, thread)); |
| 267 | FD(counter, cpu, thread) = -1; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 268 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 269 | count[0] += single_count[0]; |
| 270 | if (scale) { |
| 271 | count[1] += single_count[1]; |
| 272 | count[2] += single_count[2]; |
| 273 | } |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 274 | } |
| 275 | } |
| 276 | |
| 277 | scaled = 0; |
| 278 | if (scale) { |
| 279 | if (count[2] == 0) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 280 | ps->scaled = -1; |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 281 | count[0] = 0; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 282 | return; |
| 283 | } |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 284 | |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 285 | if (count[2] < count[1]) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 286 | ps->scaled = 1; |
Ingo Molnar | c04f5e5 | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 287 | count[0] = (unsigned long long) |
| 288 | ((double)count[0] * count[1] / count[2] + 0.5); |
| 289 | } |
| 290 | } |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 291 | |
| 292 | for (i = 0; i < 3; i++) |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 293 | update_stats(&ps->res_stats[i], count[i]); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 294 | |
| 295 | if (verbose) { |
| 296 | fprintf(stderr, "%s: %Ld %Ld %Ld\n", event_name(counter), |
| 297 | count[0], count[1], count[2]); |
| 298 | } |
| 299 | |
Ingo Molnar | be1ac0d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 300 | /* |
| 301 | * Save the full runtime - to allow normalization during printout: |
| 302 | */ |
Jaswinder Singh Rajput | b9ebdcc | 2009-07-01 15:05:09 +0530 | [diff] [blame] | 303 | if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 304 | update_stats(&runtime_nsecs_stats[0], count[0]); |
Jaswinder Singh Rajput | b9ebdcc | 2009-07-01 15:05:09 +0530 | [diff] [blame] | 305 | if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter)) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 306 | update_stats(&runtime_cycles_stats[0], count[0]); |
Anton Blanchard | 1101820 | 2009-10-18 22:29:23 +1100 | [diff] [blame] | 307 | if (MATCH_EVENT(HARDWARE, HW_BRANCH_INSTRUCTIONS, counter)) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 308 | update_stats(&runtime_branches_stats[0], count[0]); |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * Read out the results of a single counter: |
| 313 | * do not aggregate counts across CPUs in system-wide mode |
| 314 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 315 | static void read_counter(struct perf_evsel *counter) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 316 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 317 | struct cpu_counts *cpu_counts = counter->priv; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 318 | u64 count[3]; |
| 319 | int cpu; |
| 320 | size_t res, nv; |
| 321 | |
| 322 | count[0] = count[1] = count[2] = 0; |
| 323 | |
| 324 | nv = scale ? 3 : 1; |
| 325 | |
| 326 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
| 327 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 328 | if (FD(counter, cpu, 0) < 0) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 329 | continue; |
| 330 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 331 | res = read(FD(counter, cpu, 0), count, nv * sizeof(u64)); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 332 | |
| 333 | assert(res == nv * sizeof(u64)); |
| 334 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 335 | close(FD(counter, cpu, 0)); |
| 336 | FD(counter, cpu, 0) = -1; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 337 | |
| 338 | if (scale) { |
| 339 | if (count[2] == 0) { |
| 340 | count[0] = 0; |
| 341 | } else if (count[2] < count[1]) { |
| 342 | count[0] = (unsigned long long) |
| 343 | ((double)count[0] * count[1] / count[2] + 0.5); |
| 344 | } |
| 345 | } |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 346 | cpu_counts[cpu].val = count[0]; /* scaled count */ |
| 347 | cpu_counts[cpu].ena = count[1]; |
| 348 | cpu_counts[cpu].run = count[2]; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 349 | |
| 350 | if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) |
| 351 | update_stats(&runtime_nsecs_stats[cpu], count[0]); |
| 352 | if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter)) |
| 353 | update_stats(&runtime_cycles_stats[cpu], count[0]); |
| 354 | if (MATCH_EVENT(HARDWARE, HW_BRANCH_INSTRUCTIONS, counter)) |
| 355 | update_stats(&runtime_branches_stats[cpu], count[0]); |
| 356 | } |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 357 | } |
| 358 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 359 | static int run_perf_stat(int argc __used, const char **argv) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 360 | { |
| 361 | unsigned long long t0, t1; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 362 | struct perf_evsel *counter; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 363 | int status = 0; |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 364 | int ncreated = 0; |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 365 | int child_ready_pipe[2], go_pipe[2]; |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 366 | bool perm_err = false; |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 367 | const bool forks = (argc > 0); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 368 | char buf; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 369 | |
| 370 | if (!system_wide) |
| 371 | nr_cpus = 1; |
| 372 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 373 | if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) { |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 374 | perror("failed to create pipes"); |
| 375 | exit(1); |
| 376 | } |
| 377 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 378 | if (forks) { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 379 | if ((child_pid = fork()) < 0) |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 380 | perror("failed to fork"); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 381 | |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 382 | if (!child_pid) { |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 383 | close(child_ready_pipe[0]); |
| 384 | close(go_pipe[1]); |
| 385 | fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC); |
| 386 | |
| 387 | /* |
| 388 | * Do a dummy execvp to get the PLT entry resolved, |
| 389 | * so we avoid the resolver overhead on the real |
| 390 | * execvp call. |
| 391 | */ |
| 392 | execvp("", (char **)argv); |
| 393 | |
| 394 | /* |
| 395 | * Tell the parent we're ready to go |
| 396 | */ |
| 397 | close(child_ready_pipe[1]); |
| 398 | |
| 399 | /* |
| 400 | * Wait until the parent tells us to go. |
| 401 | */ |
| 402 | if (read(go_pipe[0], &buf, 1) == -1) |
| 403 | perror("unable to read pipe"); |
| 404 | |
| 405 | execvp(argv[0], (char **)argv); |
| 406 | |
| 407 | perror(argv[0]); |
| 408 | exit(-1); |
| 409 | } |
| 410 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 411 | if (target_tid == -1 && target_pid == -1 && !system_wide) |
| 412 | all_tids[0] = child_pid; |
| 413 | |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 414 | /* |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 415 | * Wait for the child to be ready to exec. |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 416 | */ |
| 417 | close(child_ready_pipe[1]); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 418 | close(go_pipe[0]); |
| 419 | if (read(child_ready_pipe[0], &buf, 1) == -1) |
Frederic Weisbecker | a92bef0 | 2009-07-01 21:02:10 +0200 | [diff] [blame] | 420 | perror("unable to read pipe"); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 421 | close(child_ready_pipe[0]); |
Paul Mackerras | 051ae7f | 2009-06-29 21:13:21 +1000 | [diff] [blame] | 422 | } |
| 423 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 424 | list_for_each_entry(counter, &evsel_list, node) |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 425 | ncreated += create_perf_stat_counter(counter, &perm_err); |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 426 | |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 427 | if (ncreated < nr_counters) { |
| 428 | if (perm_err) |
| 429 | error("You may not have permission to collect %sstats.\n" |
| 430 | "\t Consider tweaking" |
| 431 | " /proc/sys/kernel/perf_event_paranoid or running as root.", |
| 432 | system_wide ? "system-wide " : ""); |
| 433 | die("Not all events could be opened.\n"); |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 434 | if (child_pid != -1) |
| 435 | kill(child_pid, SIGTERM); |
| 436 | return -1; |
| 437 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 438 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 439 | /* |
| 440 | * Enable counters and exec the command: |
| 441 | */ |
| 442 | t0 = rdclock(); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 443 | |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 444 | if (forks) { |
| 445 | close(go_pipe[1]); |
| 446 | wait(&status); |
| 447 | } else { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 448 | while(!done) sleep(1); |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 449 | } |
Ingo Molnar | 44db76c | 2009-06-03 19:36:07 +0200 | [diff] [blame] | 450 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 451 | t1 = rdclock(); |
| 452 | |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 453 | update_stats(&walltime_nsecs_stats, t1 - t0); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 454 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 455 | if (no_aggr) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 456 | list_for_each_entry(counter, &evsel_list, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 457 | read_counter(counter); |
| 458 | } else { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 459 | list_for_each_entry(counter, &evsel_list, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 460 | read_counter_aggr(counter); |
| 461 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 462 | return WEXITSTATUS(status); |
| 463 | } |
| 464 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 465 | static void print_noise(struct perf_evsel *evsel, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 466 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 467 | struct perf_stat *ps; |
| 468 | |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 469 | if (run_count == 1) |
| 470 | return; |
| 471 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 472 | ps = evsel->priv; |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 473 | fprintf(stderr, " ( +- %7.3f%% )", |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 474 | 100 * stddev_stats(&ps->res_stats[0]) / avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 475 | } |
| 476 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 477 | static void nsec_printout(int cpu, struct perf_evsel *counter, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 478 | { |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 479 | double msecs = avg / 1e6; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 480 | char cpustr[16] = { '\0', }; |
| 481 | 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] | 482 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 483 | if (no_aggr) |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 484 | sprintf(cpustr, "CPU%*d%s", |
| 485 | csv_output ? 0 : -4, |
| 486 | cpumap[cpu], csv_sep); |
| 487 | |
| 488 | fprintf(stderr, fmt, cpustr, msecs, csv_sep, event_name(counter)); |
| 489 | |
| 490 | if (csv_output) |
| 491 | return; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 492 | |
Jaswinder Singh Rajput | b9ebdcc | 2009-07-01 15:05:09 +0530 | [diff] [blame] | 493 | if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) { |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 494 | fprintf(stderr, " # %10.3f CPUs ", |
| 495 | avg / avg_stats(&walltime_nsecs_stats)); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 496 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 497 | } |
| 498 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 499 | static void abs_printout(int cpu, struct perf_evsel *counter, double avg) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 500 | { |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 501 | double total, ratio = 0.0; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 502 | char cpustr[16] = { '\0', }; |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 503 | const char *fmt; |
| 504 | |
| 505 | if (csv_output) |
| 506 | fmt = "%s%.0f%s%s"; |
| 507 | else if (big_num) |
| 508 | fmt = "%s%'18.0f%s%-24s"; |
| 509 | else |
| 510 | fmt = "%s%18.0f%s%-24s"; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 511 | |
| 512 | if (no_aggr) |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 513 | sprintf(cpustr, "CPU%*d%s", |
| 514 | csv_output ? 0 : -4, |
| 515 | cpumap[cpu], csv_sep); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 516 | else |
| 517 | cpu = 0; |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 518 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 519 | fprintf(stderr, fmt, cpustr, avg, csv_sep, event_name(counter)); |
| 520 | |
| 521 | if (csv_output) |
| 522 | return; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 523 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 524 | if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) { |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 525 | total = avg_stats(&runtime_cycles_stats[cpu]); |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 526 | |
| 527 | if (total) |
| 528 | ratio = avg / total; |
| 529 | |
| 530 | fprintf(stderr, " # %10.3f IPC ", ratio); |
Lucas De Marchi | 7255fe2 | 2009-11-15 12:05:08 -0200 | [diff] [blame] | 531 | } else if (MATCH_EVENT(HARDWARE, HW_BRANCH_MISSES, counter) && |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 532 | runtime_branches_stats[cpu].n != 0) { |
| 533 | total = avg_stats(&runtime_branches_stats[cpu]); |
Anton Blanchard | 1101820 | 2009-10-18 22:29:23 +1100 | [diff] [blame] | 534 | |
| 535 | if (total) |
| 536 | ratio = avg * 100 / total; |
| 537 | |
Ingo Molnar | dd86e72 | 2009-10-19 13:33:03 +0200 | [diff] [blame] | 538 | fprintf(stderr, " # %10.3f %% ", ratio); |
Anton Blanchard | 1101820 | 2009-10-18 22:29:23 +1100 | [diff] [blame] | 539 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 540 | } else if (runtime_nsecs_stats[cpu].n != 0) { |
| 541 | total = avg_stats(&runtime_nsecs_stats[cpu]); |
Ingo Molnar | c7f7fea | 2009-09-22 14:53:51 +0200 | [diff] [blame] | 542 | |
| 543 | if (total) |
| 544 | ratio = 1000.0 * avg / total; |
| 545 | |
| 546 | fprintf(stderr, " # %10.3f M/sec", ratio); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 547 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | /* |
| 551 | * Print out the results of a single counter: |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 552 | * aggregated counts in system-wide mode |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 553 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 554 | static void print_counter_aggr(struct perf_evsel *counter) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 555 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 556 | struct perf_stat *ps = counter->priv; |
| 557 | double avg = avg_stats(&ps->res_stats[0]); |
| 558 | int scaled = ps->scaled; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 559 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 560 | if (scaled == -1) { |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 561 | fprintf(stderr, "%*s%s%-24s\n", |
| 562 | csv_output ? 0 : 18, |
| 563 | "<not counted>", csv_sep, event_name(counter)); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 564 | return; |
| 565 | } |
| 566 | |
| 567 | if (nsec_counter(counter)) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 568 | nsec_printout(-1, counter, avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 569 | else |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 570 | abs_printout(-1, counter, avg); |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 571 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 572 | if (csv_output) { |
| 573 | fputc('\n', stderr); |
| 574 | return; |
| 575 | } |
| 576 | |
Peter Zijlstra | 849abde | 2009-09-04 18:23:38 +0200 | [diff] [blame] | 577 | print_noise(counter, avg); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 578 | |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 579 | if (scaled) { |
| 580 | double avg_enabled, avg_running; |
| 581 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 582 | avg_enabled = avg_stats(&ps->res_stats[1]); |
| 583 | avg_running = avg_stats(&ps->res_stats[2]); |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 584 | |
Ingo Molnar | 210ad39 | 2009-06-29 21:50:54 +0200 | [diff] [blame] | 585 | fprintf(stderr, " (scaled from %.2f%%)", |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 586 | 100 * avg_running / avg_enabled); |
| 587 | } |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 588 | |
| 589 | fprintf(stderr, "\n"); |
| 590 | } |
| 591 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 592 | /* |
| 593 | * Print out the results of a single counter: |
| 594 | * does not use aggregated count in system-wide |
| 595 | */ |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 596 | static void print_counter(struct perf_evsel *counter) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 597 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 598 | struct perf_stat *ps = counter->priv; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 599 | u64 ena, run, val; |
| 600 | int cpu; |
| 601 | |
| 602 | for (cpu = 0; cpu < nr_cpus; cpu++) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 603 | val = ps->cpu_counts[cpu].val; |
| 604 | ena = ps->cpu_counts[cpu].ena; |
| 605 | run = ps->cpu_counts[cpu].run; |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 606 | if (run == 0 || ena == 0) { |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 607 | fprintf(stderr, "CPU%*d%s%*s%s%-24s", |
| 608 | csv_output ? 0 : -4, |
| 609 | cpumap[cpu], csv_sep, |
| 610 | csv_output ? 0 : 18, |
| 611 | "<not counted>", csv_sep, |
| 612 | event_name(counter)); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 613 | |
| 614 | fprintf(stderr, "\n"); |
| 615 | continue; |
| 616 | } |
| 617 | |
| 618 | if (nsec_counter(counter)) |
| 619 | nsec_printout(cpu, counter, val); |
| 620 | else |
| 621 | abs_printout(cpu, counter, val); |
| 622 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 623 | if (!csv_output) { |
| 624 | print_noise(counter, 1.0); |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 625 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 626 | if (run != ena) { |
| 627 | fprintf(stderr, " (scaled from %.2f%%)", |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 628 | 100.0 * run / ena); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 629 | } |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 630 | } |
| 631 | fprintf(stderr, "\n"); |
| 632 | } |
| 633 | } |
| 634 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 635 | static void print_stat(int argc, const char **argv) |
| 636 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 637 | struct perf_evsel *counter; |
| 638 | int i; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 639 | |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 640 | fflush(stdout); |
| 641 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 642 | if (!csv_output) { |
| 643 | fprintf(stderr, "\n"); |
| 644 | fprintf(stderr, " Performance counter stats for "); |
| 645 | if(target_pid == -1 && target_tid == -1) { |
| 646 | fprintf(stderr, "\'%s", argv[0]); |
| 647 | for (i = 1; i < argc; i++) |
| 648 | fprintf(stderr, " %s", argv[i]); |
| 649 | } else if (target_pid != -1) |
| 650 | fprintf(stderr, "process id \'%d", target_pid); |
| 651 | else |
| 652 | fprintf(stderr, "thread id \'%d", target_tid); |
Ingo Molnar | 44db76c | 2009-06-03 19:36:07 +0200 | [diff] [blame] | 653 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 654 | fprintf(stderr, "\'"); |
| 655 | if (run_count > 1) |
| 656 | fprintf(stderr, " (%d runs)", run_count); |
| 657 | fprintf(stderr, ":\n\n"); |
| 658 | } |
Ingo Molnar | 2996f5d | 2009-05-29 09:10:54 +0200 | [diff] [blame] | 659 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 660 | if (no_aggr) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 661 | list_for_each_entry(counter, &evsel_list, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 662 | print_counter(counter); |
| 663 | } else { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 664 | list_for_each_entry(counter, &evsel_list, node) |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 665 | print_counter_aggr(counter); |
| 666 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 667 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 668 | if (!csv_output) { |
| 669 | fprintf(stderr, "\n"); |
| 670 | fprintf(stderr, " %18.9f seconds time elapsed", |
| 671 | avg_stats(&walltime_nsecs_stats)/1e9); |
| 672 | if (run_count > 1) { |
| 673 | fprintf(stderr, " ( +- %7.3f%% )", |
Peter Zijlstra | 506d4bc | 2009-09-04 15:36:12 +0200 | [diff] [blame] | 674 | 100*stddev_stats(&walltime_nsecs_stats) / |
| 675 | avg_stats(&walltime_nsecs_stats)); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 676 | } |
| 677 | fprintf(stderr, "\n\n"); |
Ingo Molnar | 566747e | 2009-06-27 06:24:32 +0200 | [diff] [blame] | 678 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 679 | } |
| 680 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 681 | static volatile int signr = -1; |
| 682 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 683 | static void skip_signal(int signo) |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 684 | { |
Zhang, Yanmin | 6be2850 | 2010-03-18 11:36:03 -0300 | [diff] [blame] | 685 | if(child_pid == -1) |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 686 | done = 1; |
| 687 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 688 | signr = signo; |
| 689 | } |
| 690 | |
| 691 | static void sig_atexit(void) |
| 692 | { |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 693 | if (child_pid != -1) |
| 694 | kill(child_pid, SIGTERM); |
| 695 | |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 696 | if (signr == -1) |
| 697 | return; |
| 698 | |
| 699 | signal(signr, SIG_DFL); |
| 700 | kill(getpid(), signr); |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 701 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 702 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 703 | static const char * const stat_usage[] = { |
Liming Wang | 60666c6 | 2009-12-31 16:05:50 +0800 | [diff] [blame] | 704 | "perf stat [<options>] [<command>]", |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 705 | NULL |
| 706 | }; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 707 | |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 708 | static int stat__set_big_num(const struct option *opt __used, |
| 709 | const char *s __used, int unset) |
| 710 | { |
| 711 | big_num_opt = unset ? 0 : 1; |
| 712 | return 0; |
| 713 | } |
| 714 | |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 715 | static const struct option options[] = { |
| 716 | OPT_CALLBACK('e', "event", NULL, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 717 | "event selector. use 'perf list' to list available events", |
| 718 | parse_events), |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 719 | OPT_BOOLEAN('i', "no-inherit", &no_inherit, |
| 720 | "child tasks do not inherit counters"), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 721 | OPT_INTEGER('p', "pid", &target_pid, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 722 | "stat events on existing process id"), |
| 723 | OPT_INTEGER('t', "tid", &target_tid, |
| 724 | "stat events on existing thread id"), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 725 | OPT_BOOLEAN('a', "all-cpus", &system_wide, |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 726 | "system-wide collection from all CPUs"), |
Brice Goglin | b26bc5a | 2009-08-07 10:18:39 +0200 | [diff] [blame] | 727 | OPT_BOOLEAN('c', "scale", &scale, |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 728 | "scale/normalize counters"), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 729 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 743ee1f | 2009-06-07 17:06:46 +0200 | [diff] [blame] | 730 | "be more verbose (show counter open errors, etc)"), |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 731 | OPT_INTEGER('r', "repeat", &run_count, |
| 732 | "repeat command and print average + stddev (max: 100)"), |
Ingo Molnar | 0cfb7a1 | 2009-06-27 06:10:30 +0200 | [diff] [blame] | 733 | OPT_BOOLEAN('n', "null", &null_run, |
| 734 | "null run - dont start any counters"), |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 735 | OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
| 736 | "print large numbers with thousands\' separators", |
| 737 | stat__set_big_num), |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 738 | OPT_STRING('C', "cpu", &cpu_list, "cpu", |
| 739 | "list of cpus to monitor in system-wide"), |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 740 | OPT_BOOLEAN('A', "no-aggr", &no_aggr, |
| 741 | "disable CPU count aggregation"), |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 742 | OPT_STRING('x', "field-separator", &csv_sep, "separator", |
| 743 | "print counts with custom separator"), |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 744 | OPT_END() |
| 745 | }; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 746 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 747 | int cmd_stat(int argc, const char **argv, const char *prefix __used) |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 748 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 749 | struct perf_evsel *pos; |
| 750 | int status = -ENOMEM; |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 751 | |
Stephane Eranian | 5af52b5 | 2010-05-18 15:00:01 +0200 | [diff] [blame] | 752 | setlocale(LC_ALL, ""); |
| 753 | |
Anton Blanchard | a054123 | 2009-07-22 23:04:12 +1000 | [diff] [blame] | 754 | argc = parse_options(argc, argv, options, stat_usage, |
| 755 | PARSE_OPT_STOP_AT_NON_OPTION); |
Stephane Eranian | d7470b6 | 2010-12-01 18:49:05 +0200 | [diff] [blame] | 756 | |
| 757 | if (csv_sep) |
| 758 | csv_output = true; |
| 759 | else |
| 760 | csv_sep = DEFAULT_SEPARATOR; |
| 761 | |
| 762 | /* |
| 763 | * let the spreadsheet do the pretty-printing |
| 764 | */ |
| 765 | if (csv_output) { |
| 766 | /* User explicitely passed -B? */ |
| 767 | if (big_num_opt == 1) { |
| 768 | fprintf(stderr, "-B option not supported with -x\n"); |
| 769 | usage_with_options(stat_usage, options); |
| 770 | } else /* Nope, so disable big number formatting */ |
| 771 | big_num = false; |
| 772 | } else if (big_num_opt == 0) /* User passed --no-big-num */ |
| 773 | big_num = false; |
| 774 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 775 | if (!argc && target_pid == -1 && target_tid == -1) |
Ingo Molnar | 5242519 | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 776 | usage_with_options(stat_usage, options); |
Peter Zijlstra | 9e9772c | 2009-09-04 15:36:08 +0200 | [diff] [blame] | 777 | if (run_count <= 0) |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 778 | usage_with_options(stat_usage, options); |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 779 | |
Stephane Eranian | f5b4a9c3 | 2010-11-16 11:05:01 +0200 | [diff] [blame] | 780 | /* no_aggr is for system-wide only */ |
| 781 | if (no_aggr && !system_wide) |
| 782 | usage_with_options(stat_usage, options); |
| 783 | |
Jaswinder Singh Rajput | c304356 | 2009-06-27 23:49:09 +0530 | [diff] [blame] | 784 | /* Set attrs and nr_counters if no event is selected and !null_run */ |
| 785 | if (!null_run && !nr_counters) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 786 | size_t c; |
| 787 | |
Jaswinder Singh Rajput | c304356 | 2009-06-27 23:49:09 +0530 | [diff] [blame] | 788 | nr_counters = ARRAY_SIZE(default_attrs); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 789 | |
| 790 | for (c = 0; c < ARRAY_SIZE(default_attrs); ++c) { |
| 791 | pos = perf_evsel__new(default_attrs[c].type, |
| 792 | default_attrs[c].config, |
| 793 | nr_counters); |
| 794 | if (pos == NULL) |
| 795 | goto out; |
| 796 | list_add(&pos->node, &evsel_list); |
| 797 | } |
Jaswinder Singh Rajput | c304356 | 2009-06-27 23:49:09 +0530 | [diff] [blame] | 798 | } |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 799 | |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 800 | if (system_wide) |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 801 | nr_cpus = read_cpu_map(cpu_list); |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 802 | else |
| 803 | nr_cpus = 1; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 804 | |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 805 | if (nr_cpus < 1) |
| 806 | usage_with_options(stat_usage, options); |
| 807 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 808 | if (target_pid != -1) { |
| 809 | target_tid = target_pid; |
| 810 | thread_num = find_all_tid(target_pid, &all_tids); |
| 811 | if (thread_num <= 0) { |
| 812 | fprintf(stderr, "Can't find all threads of pid %d\n", |
| 813 | target_pid); |
| 814 | usage_with_options(stat_usage, options); |
| 815 | } |
| 816 | } else { |
| 817 | all_tids=malloc(sizeof(pid_t)); |
| 818 | if (!all_tids) |
| 819 | return -ENOMEM; |
| 820 | |
| 821 | all_tids[0] = target_tid; |
| 822 | thread_num = 1; |
| 823 | } |
| 824 | |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 825 | list_for_each_entry(pos, &evsel_list, node) { |
| 826 | if (perf_evsel__alloc_stat_priv(pos, nr_cpus) < 0 || |
| 827 | perf_evsel__alloc_fd(pos, nr_cpus, thread_num) < 0) |
| 828 | goto out_free_fd; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 829 | } |
| 830 | |
Ingo Molnar | 58d7e99 | 2009-05-15 11:03:23 +0200 | [diff] [blame] | 831 | /* |
| 832 | * We dont want to block the signals - that would cause |
| 833 | * child tasks to inherit that and Ctrl-C would not work. |
| 834 | * What we want is for Ctrl-C to work in the exec()-ed |
| 835 | * task, but being ignored by perf stat itself: |
| 836 | */ |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 837 | atexit(sig_atexit); |
Ingo Molnar | 58d7e99 | 2009-05-15 11:03:23 +0200 | [diff] [blame] | 838 | signal(SIGINT, skip_signal); |
| 839 | signal(SIGALRM, skip_signal); |
| 840 | signal(SIGABRT, skip_signal); |
| 841 | |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 842 | status = 0; |
| 843 | for (run_idx = 0; run_idx < run_count; run_idx++) { |
| 844 | if (run_count != 1 && verbose) |
Jaswinder Singh Rajput | 3d63259 | 2009-06-24 18:19:34 +0530 | [diff] [blame] | 845 | fprintf(stderr, "[ perf stat: executing run #%d ... ]\n", run_idx + 1); |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 846 | status = run_perf_stat(argc, argv); |
| 847 | } |
| 848 | |
Arnaldo Carvalho de Melo | 084ab9f | 2010-03-22 13:10:28 -0300 | [diff] [blame] | 849 | if (status != -1) |
| 850 | print_stat(argc, argv); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame^] | 851 | out_free_fd: |
| 852 | list_for_each_entry(pos, &evsel_list, node) { |
| 853 | perf_evsel__free_fd(pos); |
| 854 | perf_evsel__free_stat_priv(pos); |
| 855 | } |
| 856 | out: |
Ingo Molnar | 42202dd | 2009-06-13 14:57:28 +0200 | [diff] [blame] | 857 | return status; |
Ingo Molnar | ddcacfa | 2009-04-20 15:37:32 +0200 | [diff] [blame] | 858 | } |