Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 1 | /* |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 2 | * builtin-record.c |
| 3 | * |
| 4 | * Builtin record command: Record the profile of a workload |
| 5 | * (or a CPU, or a PID) into the perf.data output file - for |
| 6 | * later analysis via perf report. |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 7 | */ |
Xiao Guangrong | b8f46c5 | 2010-02-03 11:53:14 +0800 | [diff] [blame] | 8 | #define _FILE_OFFSET_BITS 64 |
| 9 | |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 10 | #include "builtin.h" |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 11 | |
| 12 | #include "perf.h" |
| 13 | |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 14 | #include "util/build-id.h" |
Thomas Gleixner | 6eda583 | 2009-05-01 18:29:57 +0200 | [diff] [blame] | 15 | #include "util/util.h" |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 16 | #include "util/parse-options.h" |
Ingo Molnar | 8ad8db3 | 2009-05-26 11:10:09 +0200 | [diff] [blame] | 17 | #include "util/parse-events.h" |
Thomas Gleixner | 6eda583 | 2009-05-01 18:29:57 +0200 | [diff] [blame] | 18 | |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 19 | #include "util/header.h" |
Frederic Weisbecker | 66e274f | 2009-08-12 11:07:25 +0200 | [diff] [blame] | 20 | #include "util/event.h" |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 21 | #include "util/evlist.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 22 | #include "util/evsel.h" |
Frederic Weisbecker | 8f28827 | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 23 | #include "util/debug.h" |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 24 | #include "util/session.h" |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 25 | #include "util/tool.h" |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 26 | #include "util/symbol.h" |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 27 | #include "util/cpumap.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 28 | #include "util/thread_map.h" |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 29 | |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 30 | #include <unistd.h> |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 31 | #include <sched.h> |
Arnaldo Carvalho de Melo | a41794c | 2010-05-18 18:29:23 -0300 | [diff] [blame] | 32 | #include <sys/mman.h> |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 33 | |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 34 | enum write_mode_t { |
| 35 | WRITE_FORCE, |
| 36 | WRITE_APPEND |
| 37 | }; |
| 38 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 39 | struct perf_record { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 40 | struct perf_tool tool; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 41 | struct perf_record_opts opts; |
| 42 | u64 bytes_written; |
| 43 | const char *output_name; |
| 44 | struct perf_evlist *evlist; |
| 45 | struct perf_session *session; |
| 46 | const char *progname; |
| 47 | int output; |
| 48 | unsigned int page_size; |
| 49 | int realtime_prio; |
| 50 | enum write_mode_t write_mode; |
| 51 | bool no_buildid; |
| 52 | bool no_buildid_cache; |
| 53 | bool force; |
| 54 | bool file_new; |
| 55 | bool append_file; |
| 56 | long samples; |
| 57 | off_t post_processing_offset; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 58 | }; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 59 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 60 | static void advance_output(struct perf_record *rec, size_t size) |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 61 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 62 | rec->bytes_written += size; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 63 | } |
| 64 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 65 | static void write_output(struct perf_record *rec, void *buf, size_t size) |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 66 | { |
| 67 | while (size) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 68 | int ret = write(rec->output, buf, size); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 69 | |
| 70 | if (ret < 0) |
| 71 | die("failed to write"); |
| 72 | |
| 73 | size -= ret; |
| 74 | buf += ret; |
| 75 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 76 | rec->bytes_written += ret; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 77 | } |
| 78 | } |
| 79 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 80 | static int process_synthesized_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 81 | union perf_event *event, |
Arnaldo Carvalho de Melo | 8d50e5b | 2011-01-29 13:02:00 -0200 | [diff] [blame] | 82 | struct perf_sample *sample __used, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 83 | struct machine *machine __used) |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 84 | { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 85 | struct perf_record *rec = container_of(tool, struct perf_record, tool); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 86 | write_output(rec, event, event->header.size); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 87 | return 0; |
| 88 | } |
| 89 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 90 | static void perf_record__mmap_read(struct perf_record *rec, |
| 91 | struct perf_mmap *md) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 92 | { |
Arnaldo Carvalho de Melo | 744bd8a | 2011-01-12 17:07:28 -0200 | [diff] [blame] | 93 | unsigned int head = perf_mmap__read_head(md); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 94 | unsigned int old = md->prev; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 95 | unsigned char *data = md->base + rec->page_size; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 96 | unsigned long size; |
| 97 | void *buf; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 98 | |
Arnaldo Carvalho de Melo | dc82009 | 2011-01-28 14:49:19 -0200 | [diff] [blame] | 99 | if (old == head) |
| 100 | return; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 101 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 102 | rec->samples++; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 103 | |
| 104 | size = head - old; |
| 105 | |
| 106 | if ((old & md->mask) + size != (head & md->mask)) { |
| 107 | buf = &data[old & md->mask]; |
| 108 | size = md->mask + 1 - (old & md->mask); |
| 109 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 110 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 111 | write_output(rec, buf, size); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | buf = &data[old & md->mask]; |
| 115 | size = head - old; |
| 116 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 117 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 118 | write_output(rec, buf, size); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 119 | |
| 120 | md->prev = old; |
Arnaldo Carvalho de Melo | 115d2d8 | 2011-01-12 17:11:53 -0200 | [diff] [blame] | 121 | perf_mmap__write_tail(md, old); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | static volatile int done = 0; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 125 | static volatile int signr = -1; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 126 | static volatile int child_finished = 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 127 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 128 | static void sig_handler(int sig) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 129 | { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 130 | if (sig == SIGCHLD) |
| 131 | child_finished = 1; |
| 132 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 133 | done = 1; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 134 | signr = sig; |
| 135 | } |
| 136 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 137 | static void perf_record__sig_exit(int exit_status __used, void *arg) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 138 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 139 | struct perf_record *rec = arg; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 140 | int status; |
| 141 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 142 | if (rec->evlist->workload.pid > 0) { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 143 | if (!child_finished) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 144 | kill(rec->evlist->workload.pid, SIGTERM); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 145 | |
| 146 | wait(&status); |
| 147 | if (WIFSIGNALED(status)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 148 | psignal(WTERMSIG(status), rec->progname); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 149 | } |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 150 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 151 | if (signr == -1 || signr == SIGUSR1) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 152 | return; |
| 153 | |
| 154 | signal(signr, SIG_DFL); |
| 155 | kill(getpid(), signr); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 156 | } |
| 157 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 158 | static bool perf_evlist__equal(struct perf_evlist *evlist, |
| 159 | struct perf_evlist *other) |
| 160 | { |
| 161 | struct perf_evsel *pos, *pair; |
| 162 | |
| 163 | if (evlist->nr_entries != other->nr_entries) |
| 164 | return false; |
| 165 | |
| 166 | pair = list_entry(other->entries.next, struct perf_evsel, node); |
| 167 | |
| 168 | list_for_each_entry(pos, &evlist->entries, node) { |
| 169 | if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0)) |
| 170 | return false; |
| 171 | pair = list_entry(pair->node.next, struct perf_evsel, node); |
| 172 | } |
| 173 | |
| 174 | return true; |
| 175 | } |
| 176 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 177 | static void perf_record__open(struct perf_record *rec) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 178 | { |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 179 | struct perf_evsel *pos, *first; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 180 | struct perf_evlist *evlist = rec->evlist; |
| 181 | struct perf_session *session = rec->session; |
| 182 | struct perf_record_opts *opts = &rec->opts; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 183 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 184 | first = list_entry(evlist->entries.next, struct perf_evsel, node); |
| 185 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 186 | perf_evlist__config_attrs(evlist, opts); |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 187 | |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 188 | list_for_each_entry(pos, &evlist->entries, node) { |
| 189 | struct perf_event_attr *attr = &pos->attr; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 190 | struct xyarray *group_fd = NULL; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 191 | /* |
| 192 | * Check if parse_single_tracepoint_event has already asked for |
| 193 | * PERF_SAMPLE_TIME. |
| 194 | * |
| 195 | * XXX this is kludgy but short term fix for problems introduced by |
| 196 | * eac23d1c that broke 'perf script' by having different sample_types |
| 197 | * when using multiple tracepoint events when we use a perf binary |
| 198 | * that tries to use sample_id_all on an older kernel. |
| 199 | * |
| 200 | * We need to move counter creation to perf_session, support |
| 201 | * different sample_types, etc. |
| 202 | */ |
| 203 | bool time_needed = attr->sample_type & PERF_SAMPLE_TIME; |
| 204 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 205 | if (opts->group && pos != first) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 206 | group_fd = first->fd; |
Arnaldo Carvalho de Melo | 9c90a61 | 2010-12-02 10:25:28 -0200 | [diff] [blame] | 207 | retry_sample_id: |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 208 | attr->sample_id_all = opts->sample_id_all_avail ? 1 : 0; |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 209 | try_again: |
Arnaldo Carvalho de Melo | ed80f58 | 2011-11-11 15:12:56 -0200 | [diff] [blame] | 210 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 211 | opts->group, group_fd) < 0) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 212 | int err = errno; |
Ingo Molnar | f250c030 | 2009-06-05 13:18:41 +0200 | [diff] [blame] | 213 | |
Arnaldo Carvalho de Melo | c286c41 | 2011-03-28 09:50:11 -0300 | [diff] [blame] | 214 | if (err == EPERM || err == EACCES) { |
Arnaldo Carvalho de Melo | b8631e6 | 2011-10-26 08:02:55 -0200 | [diff] [blame] | 215 | ui__error_paranoid(); |
Arnaldo Carvalho de Melo | c286c41 | 2011-03-28 09:50:11 -0300 | [diff] [blame] | 216 | exit(EXIT_FAILURE); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 217 | } else if (err == ENODEV && opts->cpu_list) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 218 | die("No such device - did you specify" |
| 219 | " an out-of-range profile CPU?\n"); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 220 | } else if (err == EINVAL && opts->sample_id_all_avail) { |
Arnaldo Carvalho de Melo | 9c90a61 | 2010-12-02 10:25:28 -0200 | [diff] [blame] | 221 | /* |
| 222 | * Old kernel, no attr->sample_id_type_all field |
| 223 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 224 | opts->sample_id_all_avail = false; |
| 225 | if (!opts->sample_time && !opts->raw_samples && !time_needed) |
Ian Munsie | eac23d1 | 2010-12-09 16:33:53 +1100 | [diff] [blame] | 226 | attr->sample_type &= ~PERF_SAMPLE_TIME; |
| 227 | |
Arnaldo Carvalho de Melo | 9c90a61 | 2010-12-02 10:25:28 -0200 | [diff] [blame] | 228 | goto retry_sample_id; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 229 | } |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 230 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 231 | /* |
| 232 | * If it's cycles then fall back to hrtimer |
| 233 | * based cpu-clock-tick sw counter, which |
| 234 | * is always available even if no PMU support: |
| 235 | */ |
| 236 | if (attr->type == PERF_TYPE_HARDWARE |
| 237 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 238 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 239 | if (verbose) |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 240 | ui__warning("The cycles event is not supported, " |
| 241 | "trying to fall back to cpu-clock-ticks\n"); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 242 | attr->type = PERF_TYPE_SOFTWARE; |
| 243 | attr->config = PERF_COUNT_SW_CPU_CLOCK; |
| 244 | goto try_again; |
| 245 | } |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 246 | |
| 247 | if (err == ENOENT) { |
| 248 | ui__warning("The %s event is not supported.\n", |
| 249 | event_name(pos)); |
| 250 | exit(EXIT_FAILURE); |
| 251 | } |
| 252 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 253 | printf("\n"); |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 254 | error("sys_perf_event_open() syscall returned with %d (%s). /bin/dmesg may provide additional information.\n", |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 255 | err, strerror(err)); |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 256 | |
| 257 | #if defined(__i386__) || defined(__x86_64__) |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 258 | if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP) |
| 259 | die("No hardware sampling interrupt available." |
| 260 | " No APIC? If so then you can boot the kernel" |
| 261 | " with the \"lapic\" boot parameter to" |
| 262 | " force-enable it.\n"); |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 263 | #endif |
| 264 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 265 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 266 | } |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 267 | } |
Arnaldo Carvalho de Melo | a43d3f0 | 2010-12-25 12:12:25 -0200 | [diff] [blame] | 268 | |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 269 | if (perf_evlist__set_filters(evlist)) { |
| 270 | error("failed to set filter with %d (%s)\n", errno, |
| 271 | strerror(errno)); |
| 272 | exit(-1); |
| 273 | } |
| 274 | |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame^] | 275 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
| 276 | if (errno == EPERM) |
| 277 | die("Permission error mapping pages.\n" |
| 278 | "Consider increasing " |
| 279 | "/proc/sys/kernel/perf_event_mlock_kb,\n" |
| 280 | "or try again with a smaller value of -m/--mmap_pages.\n" |
| 281 | "(current value: %d)\n", opts->mmap_pages); |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 282 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame^] | 283 | } |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 284 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 285 | if (rec->file_new) |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 286 | session->evlist = evlist; |
| 287 | else { |
| 288 | if (!perf_evlist__equal(session->evlist, evlist)) { |
| 289 | fprintf(stderr, "incompatible append\n"); |
| 290 | exit(-1); |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | perf_session__update_sample_type(session); |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 295 | } |
| 296 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 297 | static int process_buildids(struct perf_record *rec) |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 298 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 299 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 300 | |
Arnaldo Carvalho de Melo | 9f591fd | 2010-03-11 15:53:11 -0300 | [diff] [blame] | 301 | if (size == 0) |
| 302 | return 0; |
| 303 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 304 | rec->session->fd = rec->output; |
| 305 | return __perf_session__process_events(rec->session, rec->post_processing_offset, |
| 306 | size - rec->post_processing_offset, |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 307 | size, &build_id__mark_dso_hit_ops); |
| 308 | } |
| 309 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 310 | static void perf_record__exit(int status __used, void *arg) |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 311 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 312 | struct perf_record *rec = arg; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 313 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 314 | if (!rec->opts.pipe_output) { |
| 315 | rec->session->header.data_size += rec->bytes_written; |
| 316 | |
| 317 | if (!rec->no_buildid) |
| 318 | process_buildids(rec); |
| 319 | perf_session__write_header(rec->session, rec->evlist, |
| 320 | rec->output, true); |
| 321 | perf_session__delete(rec->session); |
| 322 | perf_evlist__delete(rec->evlist); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 323 | symbol__exit(); |
Tom Zanussi | c7929e4 | 2010-04-01 23:59:22 -0500 | [diff] [blame] | 324 | } |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 325 | } |
| 326 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 327 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 328 | { |
| 329 | int err; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 330 | struct perf_tool *tool = data; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 331 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 332 | if (machine__is_host(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 333 | return; |
| 334 | |
| 335 | /* |
| 336 | *As for guest kernel when processing subcommand record&report, |
| 337 | *we arrange module mmap prior to guest kernel mmap and trigger |
| 338 | *a preload dso because default guest module symbols are loaded |
| 339 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This |
| 340 | *method is used to avoid symbol missing when the first addr is |
| 341 | *in module instead of in guest kernel. |
| 342 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 343 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 344 | machine); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 345 | if (err < 0) |
| 346 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 347 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 348 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 349 | /* |
| 350 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms |
| 351 | * have no _text sometimes. |
| 352 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 353 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 354 | machine, "_text"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 355 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 356 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 357 | machine, "_stext"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 358 | if (err < 0) |
| 359 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 360 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 361 | } |
| 362 | |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 363 | static struct perf_event_header finished_round_event = { |
| 364 | .size = sizeof(struct perf_event_header), |
| 365 | .type = PERF_RECORD_FINISHED_ROUND, |
| 366 | }; |
| 367 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 368 | static void perf_record__mmap_read_all(struct perf_record *rec) |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 369 | { |
Peter Zijlstra | 0e2e63d | 2010-05-20 14:45:26 +0200 | [diff] [blame] | 370 | int i; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 371 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 372 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
| 373 | if (rec->evlist->mmap[i].base) |
| 374 | perf_record__mmap_read(rec, &rec->evlist->mmap[i]); |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 375 | } |
| 376 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 377 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACE_INFO)) |
| 378 | write_output(rec, &finished_round_event, sizeof(finished_round_event)); |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 379 | } |
| 380 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 381 | static int __cmd_record(struct perf_record *rec, int argc, const char **argv) |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 382 | { |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 383 | struct stat st; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 384 | int flags; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 385 | int err, output; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 386 | unsigned long waking = 0; |
Zhang, Yanmin | 46be604 | 2010-03-18 11:36:04 -0300 | [diff] [blame] | 387 | const bool forks = argc > 0; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 388 | struct machine *machine; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 389 | struct perf_tool *tool = &rec->tool; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 390 | struct perf_record_opts *opts = &rec->opts; |
| 391 | struct perf_evlist *evsel_list = rec->evlist; |
| 392 | const char *output_name = rec->output_name; |
| 393 | struct perf_session *session; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 394 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 395 | rec->progname = argv[0]; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 396 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 397 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 398 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 399 | on_exit(perf_record__sig_exit, rec); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 400 | signal(SIGCHLD, sig_handler); |
| 401 | signal(SIGINT, sig_handler); |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 402 | signal(SIGUSR1, sig_handler); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 403 | |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 404 | if (!output_name) { |
| 405 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 406 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 407 | else |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 408 | rec->output_name = output_name = "perf.data"; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 409 | } |
| 410 | if (output_name) { |
| 411 | if (!strcmp(output_name, "-")) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 412 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 413 | else if (!stat(output_name, &st) && st.st_size) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 414 | if (rec->write_mode == WRITE_FORCE) { |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 415 | char oldname[PATH_MAX]; |
| 416 | snprintf(oldname, sizeof(oldname), "%s.old", |
| 417 | output_name); |
| 418 | unlink(oldname); |
| 419 | rename(output_name, oldname); |
| 420 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 421 | } else if (rec->write_mode == WRITE_APPEND) { |
| 422 | rec->write_mode = WRITE_FORCE; |
Pierre Habouzit | 266e0e2 | 2009-08-07 14:16:01 +0200 | [diff] [blame] | 423 | } |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 424 | } |
| 425 | |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 426 | flags = O_CREAT|O_RDWR; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 427 | if (rec->write_mode == WRITE_APPEND) |
| 428 | rec->file_new = 0; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 429 | else |
| 430 | flags |= O_TRUNC; |
| 431 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 432 | if (opts->pipe_output) |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 433 | output = STDOUT_FILENO; |
| 434 | else |
| 435 | output = open(output_name, flags, S_IRUSR | S_IWUSR); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 436 | if (output < 0) { |
| 437 | perror("failed to create output file"); |
| 438 | exit(-1); |
| 439 | } |
| 440 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 441 | rec->output = output; |
| 442 | |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 443 | session = perf_session__new(output_name, O_WRONLY, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 444 | rec->write_mode == WRITE_FORCE, false, NULL); |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 445 | if (session == NULL) { |
Arnaldo Carvalho de Melo | a9a70bb | 2009-11-17 01:18:11 -0200 | [diff] [blame] | 446 | pr_err("Not enough memory for reading perf file header\n"); |
| 447 | return -1; |
| 448 | } |
| 449 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 450 | rec->session = session; |
| 451 | |
| 452 | if (!rec->no_buildid) |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 453 | perf_header__set_feat(&session->header, HEADER_BUILD_ID); |
| 454 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 455 | if (!rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 456 | err = perf_session__read_header(session, output); |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 457 | if (err < 0) |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 458 | goto out_delete_session; |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 459 | } |
| 460 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 461 | if (have_tracepoints(&evsel_list->entries)) |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 462 | perf_header__set_feat(&session->header, HEADER_TRACE_INFO); |
Frederic Weisbecker | 03456a1 | 2009-10-06 23:36:47 +0200 | [diff] [blame] | 463 | |
Stephane Eranian | fbe96f2 | 2011-09-30 15:40:40 +0200 | [diff] [blame] | 464 | perf_header__set_feat(&session->header, HEADER_HOSTNAME); |
| 465 | perf_header__set_feat(&session->header, HEADER_OSRELEASE); |
| 466 | perf_header__set_feat(&session->header, HEADER_ARCH); |
| 467 | perf_header__set_feat(&session->header, HEADER_CPUDESC); |
| 468 | perf_header__set_feat(&session->header, HEADER_NRCPUS); |
| 469 | perf_header__set_feat(&session->header, HEADER_EVENT_DESC); |
| 470 | perf_header__set_feat(&session->header, HEADER_CMDLINE); |
| 471 | perf_header__set_feat(&session->header, HEADER_VERSION); |
| 472 | perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY); |
| 473 | perf_header__set_feat(&session->header, HEADER_TOTAL_MEM); |
| 474 | perf_header__set_feat(&session->header, HEADER_NUMA_TOPOLOGY); |
| 475 | perf_header__set_feat(&session->header, HEADER_CPUID); |
| 476 | |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 477 | if (forks) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 478 | err = perf_evlist__prepare_workload(evsel_list, opts, argv); |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 479 | if (err < 0) { |
| 480 | pr_err("Couldn't run the workload!\n"); |
| 481 | goto out_delete_session; |
Jens Axboe | 0a5ac84 | 2009-08-12 11:18:01 +0200 | [diff] [blame] | 482 | } |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 483 | } |
| 484 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 485 | perf_record__open(rec); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 486 | |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 487 | /* |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 488 | * perf_session__delete(session) will be called at perf_record__exit() |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 489 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 490 | on_exit(perf_record__exit, rec); |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 491 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 492 | if (opts->pipe_output) { |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 493 | err = perf_header__write_pipe(output); |
| 494 | if (err < 0) |
| 495 | return err; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 496 | } else if (rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 497 | err = perf_session__write_header(session, evsel_list, |
| 498 | output, false); |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 499 | if (err < 0) |
| 500 | return err; |
| 501 | } |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 502 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 503 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 504 | |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 505 | machine = perf_session__find_host_machine(session); |
| 506 | if (!machine) { |
| 507 | pr_err("Couldn't find native kernel information.\n"); |
| 508 | return -1; |
| 509 | } |
| 510 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 511 | if (opts->pipe_output) { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 512 | err = perf_event__synthesize_attrs(tool, session, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 513 | process_synthesized_event); |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 514 | if (err < 0) { |
| 515 | pr_err("Couldn't synthesize attrs.\n"); |
| 516 | return err; |
| 517 | } |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 518 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 519 | err = perf_event__synthesize_event_types(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 520 | machine); |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 521 | if (err < 0) { |
| 522 | pr_err("Couldn't synthesize event_types.\n"); |
| 523 | return err; |
| 524 | } |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 525 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 526 | if (have_tracepoints(&evsel_list->entries)) { |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 527 | /* |
| 528 | * FIXME err <= 0 here actually means that |
| 529 | * there were no tracepoints so its not really |
| 530 | * an error, just that we don't need to |
| 531 | * synthesize anything. We really have to |
| 532 | * return this more properly and also |
| 533 | * propagate errors that now are calling die() |
| 534 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 535 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 536 | process_synthesized_event); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 537 | if (err <= 0) { |
| 538 | pr_err("Couldn't record tracing data.\n"); |
| 539 | return err; |
| 540 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 541 | advance_output(rec, err); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 542 | } |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 543 | } |
| 544 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 545 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 546 | machine, "_text"); |
Arnaldo Carvalho de Melo | 7016213 | 2010-03-30 18:27:39 -0300 | [diff] [blame] | 547 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 548 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 549 | machine, "_stext"); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 550 | if (err < 0) |
| 551 | pr_err("Couldn't record kernel reference relocation symbol\n" |
| 552 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 553 | "Check /proc/kallsyms permission or run as root.\n"); |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 554 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 555 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 556 | machine); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 557 | if (err < 0) |
| 558 | pr_err("Couldn't record kernel module information.\n" |
| 559 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 560 | "Check /proc/modules permission or run as root.\n"); |
| 561 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 562 | if (perf_guest) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 563 | perf_session__process_machines(session, tool, |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 564 | perf_event__synthesize_guest_os); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 565 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 566 | if (!opts->system_wide) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 567 | perf_event__synthesize_thread_map(tool, evsel_list->threads, |
Arnaldo Carvalho de Melo | 7c940c1 | 2011-02-11 11:45:54 -0200 | [diff] [blame] | 568 | process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 569 | machine); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 570 | else |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 571 | perf_event__synthesize_threads(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 572 | machine); |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 573 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 574 | if (rec->realtime_prio) { |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 575 | struct sched_param param; |
| 576 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 577 | param.sched_priority = rec->realtime_prio; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 578 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 579 | pr_err("Could not set realtime priority.\n"); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 580 | exit(-1); |
| 581 | } |
| 582 | } |
| 583 | |
David Ahern | 764e16a | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 584 | perf_evlist__enable(evsel_list); |
| 585 | |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 586 | /* |
| 587 | * Let the child rip |
| 588 | */ |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 589 | if (forks) |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 590 | perf_evlist__start_workload(evsel_list); |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 591 | |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 592 | for (;;) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 593 | int hits = rec->samples; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 594 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 595 | perf_record__mmap_read_all(rec); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 596 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 597 | if (hits == rec->samples) { |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 598 | if (done) |
| 599 | break; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 600 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 601 | waking++; |
| 602 | } |
| 603 | |
Arnaldo Carvalho de Melo | 4152ab3 | 2011-07-25 11:06:19 -0300 | [diff] [blame] | 604 | if (done) |
| 605 | perf_evlist__disable(evsel_list); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 606 | } |
| 607 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 608 | if (quiet || signr == SIGUSR1) |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 609 | return 0; |
| 610 | |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 611 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
| 612 | |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 613 | /* |
| 614 | * Approximate RIP event size: 24 bytes. |
| 615 | */ |
| 616 | fprintf(stderr, |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 617 | "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n", |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 618 | (double)rec->bytes_written / 1024.0 / 1024.0, |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 619 | output_name, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 620 | rec->bytes_written / 24); |
Ingo Molnar | addc278 | 2009-06-02 23:43:11 +0200 | [diff] [blame] | 621 | |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 622 | return 0; |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 623 | |
| 624 | out_delete_session: |
| 625 | perf_session__delete(session); |
| 626 | return err; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 627 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 628 | |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 629 | static const char * const record_usage[] = { |
Mike Galbraith | 9e09675 | 2009-05-28 16:25:34 +0200 | [diff] [blame] | 630 | "perf record [<options>] [<command>]", |
| 631 | "perf record [<options>] -- <command> [<options>]", |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 632 | NULL |
| 633 | }; |
| 634 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 635 | /* |
| 636 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new |
| 637 | * because we need to have access to it in perf_record__exit, that is called |
| 638 | * after cmd_record() exits, but since record_options need to be accessible to |
| 639 | * builtin-script, leave it here. |
| 640 | * |
| 641 | * At least we don't ouch it in all the other functions here directly. |
| 642 | * |
| 643 | * Just say no to tons of global variables, sigh. |
| 644 | */ |
| 645 | static struct perf_record record = { |
| 646 | .opts = { |
| 647 | .target_pid = -1, |
| 648 | .target_tid = -1, |
| 649 | .mmap_pages = UINT_MAX, |
| 650 | .user_freq = UINT_MAX, |
| 651 | .user_interval = ULLONG_MAX, |
| 652 | .freq = 1000, |
| 653 | .sample_id_all_avail = true, |
| 654 | }, |
| 655 | .write_mode = WRITE_FORCE, |
| 656 | .file_new = true, |
| 657 | }; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 658 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 659 | /* |
| 660 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing |
| 661 | * with it and switch to use the library functions in perf_evlist that came |
| 662 | * from builtin-record.c, i.e. use perf_record_opts, |
| 663 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
| 664 | * using pipes, etc. |
| 665 | */ |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 666 | const struct option record_options[] = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 667 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 668 | "event selector. use 'perf list' to list available events", |
Jiri Olsa | f120f9d | 2011-07-14 11:25:32 +0200 | [diff] [blame] | 669 | parse_events_option), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 670 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 671 | "event filter", parse_filter), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 672 | OPT_INTEGER('p', "pid", &record.opts.target_pid, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 673 | "record events on existing process id"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 674 | OPT_INTEGER('t', "tid", &record.opts.target_tid, |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 675 | "record events on existing thread id"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 676 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 677 | "collect data with this RT SCHED_FIFO priority"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 678 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
Kirill Smelkov | acac03f | 2011-01-12 17:59:36 +0300 | [diff] [blame] | 679 | "collect data without buffering"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 680 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
Frederic Weisbecker | daac07b | 2009-08-13 10:27:19 +0200 | [diff] [blame] | 681 | "collect raw sample records from all opened counters"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 682 | OPT_BOOLEAN('a', "all-cpus", &record.opts.system_wide, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 683 | "system-wide collection from all CPUs"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 684 | OPT_BOOLEAN('A', "append", &record.append_file, |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 685 | "append to the output file to do incremental profiling"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 686 | OPT_STRING('C', "cpu", &record.opts.cpu_list, "cpu", |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 687 | "list of cpus to monitor"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 688 | OPT_BOOLEAN('f', "force", &record.force, |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 689 | "overwrite existing data file (deprecated)"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 690 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
| 691 | OPT_STRING('o', "output", &record.output_name, "file", |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 692 | "output file name"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 693 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 694 | "child tasks do not inherit counters"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 695 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
| 696 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, |
Arnaldo Carvalho de Melo | 01c2d99 | 2011-11-09 09:16:26 -0200 | [diff] [blame] | 697 | "number of mmap data pages"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 698 | OPT_BOOLEAN(0, "group", &record.opts.group, |
Lin Ming | 43bece7 | 2011-08-17 18:42:07 +0800 | [diff] [blame] | 699 | "put the counters into a counter group"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 700 | OPT_BOOLEAN('g', "call-graph", &record.opts.call_graph, |
Ingo Molnar | 3efa1cc9 | 2009-06-14 15:04:15 +0200 | [diff] [blame] | 701 | "do call-graph (stack chain/backtrace) recording"), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 702 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 703 | "be more verbose (show counter open errors, etc)"), |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 704 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 705 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 706 | "per thread counts"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 707 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
Anton Blanchard | 4bba828 | 2009-07-16 15:44:29 +0200 | [diff] [blame] | 708 | "Sample addresses"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 709 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
Andrew Vagin | 3e76ac7 | 2011-12-20 17:32:45 +0300 | [diff] [blame] | 710 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 711 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 712 | "don't sample"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 713 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 714 | "do not update the buildid cache"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 715 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 716 | "do not collect buildids in perf.data"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 717 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 718 | "monitor event in cgroup name only", |
| 719 | parse_cgroups), |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 720 | OPT_END() |
| 721 | }; |
| 722 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 723 | int cmd_record(int argc, const char **argv, const char *prefix __used) |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 724 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 725 | int err = -ENOMEM; |
| 726 | struct perf_evsel *pos; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 727 | struct perf_evlist *evsel_list; |
| 728 | struct perf_record *rec = &record; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 729 | |
Stephane Eranian | fbe96f2 | 2011-09-30 15:40:40 +0200 | [diff] [blame] | 730 | perf_header__set_cmdline(argc, argv); |
| 731 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 732 | evsel_list = perf_evlist__new(NULL, NULL); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 733 | if (evsel_list == NULL) |
| 734 | return -ENOMEM; |
| 735 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 736 | rec->evlist = evsel_list; |
| 737 | |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 738 | argc = parse_options(argc, argv, record_options, record_usage, |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 739 | PARSE_OPT_STOP_AT_NON_OPTION); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 740 | if (!argc && rec->opts.target_pid == -1 && rec->opts.target_tid == -1 && |
| 741 | !rec->opts.system_wide && !rec->opts.cpu_list) |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 742 | usage_with_options(record_usage, record_options); |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 743 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 744 | if (rec->force && rec->append_file) { |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 745 | fprintf(stderr, "Can't overwrite and append at the same time." |
| 746 | " You need to choose between -f and -A"); |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 747 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 748 | } else if (rec->append_file) { |
| 749 | rec->write_mode = WRITE_APPEND; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 750 | } else { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 751 | rec->write_mode = WRITE_FORCE; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 752 | } |
| 753 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 754 | if (nr_cgroups && !rec->opts.system_wide) { |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 755 | fprintf(stderr, "cgroup monitoring only available in" |
| 756 | " system-wide mode\n"); |
| 757 | usage_with_options(record_usage, record_options); |
| 758 | } |
| 759 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 760 | symbol__init(); |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 761 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 762 | if (symbol_conf.kptr_restrict) |
Arnaldo Carvalho de Melo | 646aaea | 2011-05-27 11:00:41 -0300 | [diff] [blame] | 763 | pr_warning( |
| 764 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" |
| 765 | "check /proc/sys/kernel/kptr_restrict.\n\n" |
| 766 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" |
| 767 | "file is not found in the buildid cache or in the vmlinux path.\n\n" |
| 768 | "Samples in kernel modules won't be resolved at all.\n\n" |
| 769 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" |
| 770 | "even with a suitable vmlinux or kallsyms file.\n\n"); |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 771 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 772 | if (rec->no_buildid_cache || rec->no_buildid) |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 773 | disable_buildid_cache(); |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 774 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 775 | if (evsel_list->nr_entries == 0 && |
| 776 | perf_evlist__add_default(evsel_list) < 0) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 777 | pr_err("Not enough memory for event selector list\n"); |
| 778 | goto out_symbol_exit; |
Peter Zijlstra | bbd36e5 | 2009-06-11 23:11:50 +0200 | [diff] [blame] | 779 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 780 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 781 | if (rec->opts.target_pid != -1) |
| 782 | rec->opts.target_tid = rec->opts.target_pid; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 783 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 784 | if (perf_evlist__create_maps(evsel_list, rec->opts.target_pid, |
| 785 | rec->opts.target_tid, rec->opts.cpu_list) < 0) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 786 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 787 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 788 | list_for_each_entry(pos, &evsel_list->entries, node) { |
Arnaldo Carvalho de Melo | ad7f4e3 | 2011-01-17 18:28:13 -0200 | [diff] [blame] | 789 | if (perf_header__push_event(pos->attr.config, event_name(pos))) |
| 790 | goto out_free_fd; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 791 | } |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 792 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 793 | if (rec->opts.user_interval != ULLONG_MAX) |
| 794 | rec->opts.default_interval = rec->opts.user_interval; |
| 795 | if (rec->opts.user_freq != UINT_MAX) |
| 796 | rec->opts.freq = rec->opts.user_freq; |
Frederic Weisbecker | f921281 | 2010-04-14 22:09:02 +0200 | [diff] [blame] | 797 | |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 798 | /* |
| 799 | * User specified count overrides default frequency. |
| 800 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 801 | if (rec->opts.default_interval) |
| 802 | rec->opts.freq = 0; |
| 803 | else if (rec->opts.freq) { |
| 804 | rec->opts.default_interval = rec->opts.freq; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 805 | } else { |
| 806 | fprintf(stderr, "frequency and count are zero, aborting\n"); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 807 | err = -EINVAL; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 808 | goto out_free_fd; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 809 | } |
| 810 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 811 | err = __cmd_record(&record, argc, argv); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 812 | out_free_fd: |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 813 | perf_evlist__delete_maps(evsel_list); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 814 | out_symbol_exit: |
| 815 | symbol__exit(); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 816 | return err; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 817 | } |