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; |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 47 | const char *uid_str; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 48 | int output; |
| 49 | unsigned int page_size; |
| 50 | int realtime_prio; |
| 51 | enum write_mode_t write_mode; |
| 52 | bool no_buildid; |
| 53 | bool no_buildid_cache; |
| 54 | bool force; |
| 55 | bool file_new; |
| 56 | bool append_file; |
| 57 | long samples; |
| 58 | off_t post_processing_offset; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 59 | }; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 60 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 61 | static void advance_output(struct perf_record *rec, size_t size) |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 62 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 63 | rec->bytes_written += size; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 64 | } |
| 65 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 66 | 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] | 67 | { |
| 68 | while (size) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 69 | int ret = write(rec->output, buf, size); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 70 | |
| 71 | if (ret < 0) |
| 72 | die("failed to write"); |
| 73 | |
| 74 | size -= ret; |
| 75 | buf += ret; |
| 76 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 77 | rec->bytes_written += ret; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 78 | } |
| 79 | } |
| 80 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 81 | static int process_synthesized_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 82 | union perf_event *event, |
Arnaldo Carvalho de Melo | 8d50e5b | 2011-01-29 13:02:00 -0200 | [diff] [blame] | 83 | struct perf_sample *sample __used, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 84 | struct machine *machine __used) |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 85 | { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 86 | 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] | 87 | write_output(rec, event, event->header.size); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 88 | return 0; |
| 89 | } |
| 90 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 91 | static void perf_record__mmap_read(struct perf_record *rec, |
| 92 | struct perf_mmap *md) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 93 | { |
Arnaldo Carvalho de Melo | 744bd8a | 2011-01-12 17:07:28 -0200 | [diff] [blame] | 94 | unsigned int head = perf_mmap__read_head(md); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 95 | unsigned int old = md->prev; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 96 | unsigned char *data = md->base + rec->page_size; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 97 | unsigned long size; |
| 98 | void *buf; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 99 | |
Arnaldo Carvalho de Melo | dc82009 | 2011-01-28 14:49:19 -0200 | [diff] [blame] | 100 | if (old == head) |
| 101 | return; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 102 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 103 | rec->samples++; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 104 | |
| 105 | size = head - old; |
| 106 | |
| 107 | if ((old & md->mask) + size != (head & md->mask)) { |
| 108 | buf = &data[old & md->mask]; |
| 109 | size = md->mask + 1 - (old & md->mask); |
| 110 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 111 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 112 | write_output(rec, buf, size); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | buf = &data[old & md->mask]; |
| 116 | size = head - old; |
| 117 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 118 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 119 | write_output(rec, buf, size); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 120 | |
| 121 | md->prev = old; |
Arnaldo Carvalho de Melo | 115d2d8 | 2011-01-12 17:11:53 -0200 | [diff] [blame] | 122 | perf_mmap__write_tail(md, old); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | static volatile int done = 0; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 126 | static volatile int signr = -1; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 127 | static volatile int child_finished = 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 128 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 129 | static void sig_handler(int sig) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 130 | { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 131 | if (sig == SIGCHLD) |
| 132 | child_finished = 1; |
| 133 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 134 | done = 1; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 135 | signr = sig; |
| 136 | } |
| 137 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 138 | static void perf_record__sig_exit(int exit_status __used, void *arg) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 139 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 140 | struct perf_record *rec = arg; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 141 | int status; |
| 142 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 143 | if (rec->evlist->workload.pid > 0) { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 144 | if (!child_finished) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 145 | kill(rec->evlist->workload.pid, SIGTERM); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 146 | |
| 147 | wait(&status); |
| 148 | if (WIFSIGNALED(status)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 149 | psignal(WTERMSIG(status), rec->progname); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 150 | } |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 151 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 152 | if (signr == -1 || signr == SIGUSR1) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 153 | return; |
| 154 | |
| 155 | signal(signr, SIG_DFL); |
| 156 | kill(getpid(), signr); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 157 | } |
| 158 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 159 | static bool perf_evlist__equal(struct perf_evlist *evlist, |
| 160 | struct perf_evlist *other) |
| 161 | { |
| 162 | struct perf_evsel *pos, *pair; |
| 163 | |
| 164 | if (evlist->nr_entries != other->nr_entries) |
| 165 | return false; |
| 166 | |
| 167 | pair = list_entry(other->entries.next, struct perf_evsel, node); |
| 168 | |
| 169 | list_for_each_entry(pos, &evlist->entries, node) { |
| 170 | if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0)) |
| 171 | return false; |
| 172 | pair = list_entry(pair->node.next, struct perf_evsel, node); |
| 173 | } |
| 174 | |
| 175 | return true; |
| 176 | } |
| 177 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 178 | static void perf_record__open(struct perf_record *rec) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 179 | { |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 180 | struct perf_evsel *pos, *first; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 181 | struct perf_evlist *evlist = rec->evlist; |
| 182 | struct perf_session *session = rec->session; |
| 183 | struct perf_record_opts *opts = &rec->opts; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 184 | |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 185 | first = list_entry(evlist->entries.next, struct perf_evsel, node); |
| 186 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 187 | perf_evlist__config_attrs(evlist, opts); |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 188 | |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 189 | list_for_each_entry(pos, &evlist->entries, node) { |
| 190 | struct perf_event_attr *attr = &pos->attr; |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 191 | struct xyarray *group_fd = NULL; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 192 | /* |
| 193 | * Check if parse_single_tracepoint_event has already asked for |
| 194 | * PERF_SAMPLE_TIME. |
| 195 | * |
| 196 | * XXX this is kludgy but short term fix for problems introduced by |
| 197 | * eac23d1c that broke 'perf script' by having different sample_types |
| 198 | * when using multiple tracepoint events when we use a perf binary |
| 199 | * that tries to use sample_id_all on an older kernel. |
| 200 | * |
| 201 | * We need to move counter creation to perf_session, support |
| 202 | * different sample_types, etc. |
| 203 | */ |
| 204 | bool time_needed = attr->sample_type & PERF_SAMPLE_TIME; |
| 205 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 206 | if (opts->group && pos != first) |
Arnaldo Carvalho de Melo | 727ab04 | 2011-10-25 10:42:19 -0200 | [diff] [blame] | 207 | group_fd = first->fd; |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 208 | fallback_missing_features: |
| 209 | if (opts->exclude_guest_missing) |
| 210 | attr->exclude_guest = attr->exclude_host = 0; |
Arnaldo Carvalho de Melo | 9c90a61 | 2010-12-02 10:25:28 -0200 | [diff] [blame] | 211 | retry_sample_id: |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 212 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 213 | try_again: |
Arnaldo Carvalho de Melo | ed80f58 | 2011-11-11 15:12:56 -0200 | [diff] [blame] | 214 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 215 | opts->group, group_fd) < 0) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 216 | int err = errno; |
Ingo Molnar | f250c030 | 2009-06-05 13:18:41 +0200 | [diff] [blame] | 217 | |
Arnaldo Carvalho de Melo | c286c41 | 2011-03-28 09:50:11 -0300 | [diff] [blame] | 218 | if (err == EPERM || err == EACCES) { |
Arnaldo Carvalho de Melo | b8631e6 | 2011-10-26 08:02:55 -0200 | [diff] [blame] | 219 | ui__error_paranoid(); |
Arnaldo Carvalho de Melo | c286c41 | 2011-03-28 09:50:11 -0300 | [diff] [blame] | 220 | exit(EXIT_FAILURE); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 221 | } else if (err == ENODEV && opts->cpu_list) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 222 | die("No such device - did you specify" |
| 223 | " an out-of-range profile CPU?\n"); |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 224 | } else if (err == EINVAL) { |
| 225 | if (!opts->exclude_guest_missing && |
| 226 | (attr->exclude_guest || attr->exclude_host)) { |
| 227 | pr_debug("Old kernel, cannot exclude " |
| 228 | "guest or host samples.\n"); |
| 229 | opts->exclude_guest_missing = true; |
| 230 | goto fallback_missing_features; |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 231 | } else if (!opts->sample_id_all_missing) { |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 232 | /* |
| 233 | * Old kernel, no attr->sample_id_type_all field |
| 234 | */ |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 235 | opts->sample_id_all_missing = true; |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 236 | if (!opts->sample_time && !opts->raw_samples && !time_needed) |
| 237 | attr->sample_type &= ~PERF_SAMPLE_TIME; |
Ian Munsie | eac23d1 | 2010-12-09 16:33:53 +1100 | [diff] [blame] | 238 | |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 239 | goto retry_sample_id; |
| 240 | } |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 241 | } |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 242 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 243 | /* |
| 244 | * If it's cycles then fall back to hrtimer |
| 245 | * based cpu-clock-tick sw counter, which |
| 246 | * is always available even if no PMU support: |
| 247 | */ |
| 248 | if (attr->type == PERF_TYPE_HARDWARE |
| 249 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 250 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 251 | if (verbose) |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 252 | ui__warning("The cycles event is not supported, " |
| 253 | "trying to fall back to cpu-clock-ticks\n"); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 254 | attr->type = PERF_TYPE_SOFTWARE; |
| 255 | attr->config = PERF_COUNT_SW_CPU_CLOCK; |
| 256 | goto try_again; |
| 257 | } |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 258 | |
| 259 | if (err == ENOENT) { |
| 260 | ui__warning("The %s event is not supported.\n", |
| 261 | event_name(pos)); |
| 262 | exit(EXIT_FAILURE); |
| 263 | } |
| 264 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 265 | printf("\n"); |
Corey Ashford | d9cf837 | 2010-11-19 17:37:24 -0800 | [diff] [blame] | 266 | 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] | 267 | err, strerror(err)); |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 268 | |
| 269 | #if defined(__i386__) || defined(__x86_64__) |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 270 | if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP) |
| 271 | die("No hardware sampling interrupt available." |
| 272 | " No APIC? If so then you can boot the kernel" |
| 273 | " with the \"lapic\" boot parameter to" |
| 274 | " force-enable it.\n"); |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 275 | #endif |
| 276 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 277 | die("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 278 | } |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 279 | } |
Arnaldo Carvalho de Melo | a43d3f0 | 2010-12-25 12:12:25 -0200 | [diff] [blame] | 280 | |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 281 | if (perf_evlist__set_filters(evlist)) { |
| 282 | error("failed to set filter with %d (%s)\n", errno, |
| 283 | strerror(errno)); |
| 284 | exit(-1); |
| 285 | } |
| 286 | |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame] | 287 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
| 288 | if (errno == EPERM) |
| 289 | die("Permission error mapping pages.\n" |
| 290 | "Consider increasing " |
| 291 | "/proc/sys/kernel/perf_event_mlock_kb,\n" |
| 292 | "or try again with a smaller value of -m/--mmap_pages.\n" |
| 293 | "(current value: %d)\n", opts->mmap_pages); |
Nelson Elhage | 41d0d93 | 2011-12-19 08:39:32 -0500 | [diff] [blame] | 294 | else if (!is_power_of_2(opts->mmap_pages)) |
| 295 | die("--mmap_pages/-m value must be a power of two."); |
| 296 | |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 297 | die("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame] | 298 | } |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 299 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 300 | if (rec->file_new) |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 301 | session->evlist = evlist; |
| 302 | else { |
| 303 | if (!perf_evlist__equal(session->evlist, evlist)) { |
| 304 | fprintf(stderr, "incompatible append\n"); |
| 305 | exit(-1); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | perf_session__update_sample_type(session); |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 310 | } |
| 311 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 312 | static int process_buildids(struct perf_record *rec) |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 313 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 314 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 315 | |
Arnaldo Carvalho de Melo | 9f591fd | 2010-03-11 15:53:11 -0300 | [diff] [blame] | 316 | if (size == 0) |
| 317 | return 0; |
| 318 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 319 | rec->session->fd = rec->output; |
| 320 | return __perf_session__process_events(rec->session, rec->post_processing_offset, |
| 321 | size - rec->post_processing_offset, |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 322 | size, &build_id__mark_dso_hit_ops); |
| 323 | } |
| 324 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 325 | static void perf_record__exit(int status __used, void *arg) |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 326 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 327 | struct perf_record *rec = arg; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 328 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 329 | if (!rec->opts.pipe_output) { |
| 330 | rec->session->header.data_size += rec->bytes_written; |
| 331 | |
| 332 | if (!rec->no_buildid) |
| 333 | process_buildids(rec); |
| 334 | perf_session__write_header(rec->session, rec->evlist, |
| 335 | rec->output, true); |
| 336 | perf_session__delete(rec->session); |
| 337 | perf_evlist__delete(rec->evlist); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 338 | symbol__exit(); |
Tom Zanussi | c7929e4 | 2010-04-01 23:59:22 -0500 | [diff] [blame] | 339 | } |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 340 | } |
| 341 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 342 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 343 | { |
| 344 | int err; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 345 | struct perf_tool *tool = data; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 346 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 347 | if (machine__is_host(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 348 | return; |
| 349 | |
| 350 | /* |
| 351 | *As for guest kernel when processing subcommand record&report, |
| 352 | *we arrange module mmap prior to guest kernel mmap and trigger |
| 353 | *a preload dso because default guest module symbols are loaded |
| 354 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This |
| 355 | *method is used to avoid symbol missing when the first addr is |
| 356 | *in module instead of in guest kernel. |
| 357 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 358 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 359 | machine); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 360 | if (err < 0) |
| 361 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 362 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 363 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 364 | /* |
| 365 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms |
| 366 | * have no _text sometimes. |
| 367 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 368 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 369 | machine, "_text"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 370 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 371 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 372 | machine, "_stext"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 373 | if (err < 0) |
| 374 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 375 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 376 | } |
| 377 | |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 378 | static struct perf_event_header finished_round_event = { |
| 379 | .size = sizeof(struct perf_event_header), |
| 380 | .type = PERF_RECORD_FINISHED_ROUND, |
| 381 | }; |
| 382 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 383 | static void perf_record__mmap_read_all(struct perf_record *rec) |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 384 | { |
Peter Zijlstra | 0e2e63d | 2010-05-20 14:45:26 +0200 | [diff] [blame] | 385 | int i; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 386 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 387 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
| 388 | if (rec->evlist->mmap[i].base) |
| 389 | perf_record__mmap_read(rec, &rec->evlist->mmap[i]); |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 390 | } |
| 391 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 392 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACE_INFO)) |
| 393 | write_output(rec, &finished_round_event, sizeof(finished_round_event)); |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 394 | } |
| 395 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 396 | 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] | 397 | { |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 398 | struct stat st; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 399 | int flags; |
Robert Richter | 781ba9d | 2011-12-15 17:32:40 +0100 | [diff] [blame] | 400 | int err, output, feat; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 401 | unsigned long waking = 0; |
Zhang, Yanmin | 46be604 | 2010-03-18 11:36:04 -0300 | [diff] [blame] | 402 | const bool forks = argc > 0; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 403 | struct machine *machine; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 404 | struct perf_tool *tool = &rec->tool; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 405 | struct perf_record_opts *opts = &rec->opts; |
| 406 | struct perf_evlist *evsel_list = rec->evlist; |
| 407 | const char *output_name = rec->output_name; |
| 408 | struct perf_session *session; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 409 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 410 | rec->progname = argv[0]; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 411 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 412 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 413 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 414 | on_exit(perf_record__sig_exit, rec); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 415 | signal(SIGCHLD, sig_handler); |
| 416 | signal(SIGINT, sig_handler); |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 417 | signal(SIGUSR1, sig_handler); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 418 | |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 419 | if (!output_name) { |
| 420 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 421 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 422 | else |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 423 | rec->output_name = output_name = "perf.data"; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 424 | } |
| 425 | if (output_name) { |
| 426 | if (!strcmp(output_name, "-")) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 427 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 428 | else if (!stat(output_name, &st) && st.st_size) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 429 | if (rec->write_mode == WRITE_FORCE) { |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 430 | char oldname[PATH_MAX]; |
| 431 | snprintf(oldname, sizeof(oldname), "%s.old", |
| 432 | output_name); |
| 433 | unlink(oldname); |
| 434 | rename(output_name, oldname); |
| 435 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 436 | } else if (rec->write_mode == WRITE_APPEND) { |
| 437 | rec->write_mode = WRITE_FORCE; |
Pierre Habouzit | 266e0e2 | 2009-08-07 14:16:01 +0200 | [diff] [blame] | 438 | } |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 439 | } |
| 440 | |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 441 | flags = O_CREAT|O_RDWR; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 442 | if (rec->write_mode == WRITE_APPEND) |
| 443 | rec->file_new = 0; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 444 | else |
| 445 | flags |= O_TRUNC; |
| 446 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 447 | if (opts->pipe_output) |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 448 | output = STDOUT_FILENO; |
| 449 | else |
| 450 | output = open(output_name, flags, S_IRUSR | S_IWUSR); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 451 | if (output < 0) { |
| 452 | perror("failed to create output file"); |
| 453 | exit(-1); |
| 454 | } |
| 455 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 456 | rec->output = output; |
| 457 | |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 458 | session = perf_session__new(output_name, O_WRONLY, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 459 | rec->write_mode == WRITE_FORCE, false, NULL); |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 460 | if (session == NULL) { |
Arnaldo Carvalho de Melo | a9a70bb | 2009-11-17 01:18:11 -0200 | [diff] [blame] | 461 | pr_err("Not enough memory for reading perf file header\n"); |
| 462 | return -1; |
| 463 | } |
| 464 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 465 | rec->session = session; |
| 466 | |
Robert Richter | 781ba9d | 2011-12-15 17:32:40 +0100 | [diff] [blame] | 467 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
| 468 | perf_header__set_feat(&session->header, feat); |
| 469 | |
| 470 | if (rec->no_buildid) |
| 471 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
| 472 | |
| 473 | if (!have_tracepoints(&evsel_list->entries)) |
| 474 | perf_header__clear_feat(&session->header, HEADER_TRACE_INFO); |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 475 | |
Stephane Eranian | 330aa67 | 2012-03-08 23:47:46 +0100 | [diff] [blame] | 476 | if (!rec->opts.branch_stack) |
| 477 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); |
| 478 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 479 | if (!rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 480 | err = perf_session__read_header(session, output); |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 481 | if (err < 0) |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 482 | goto out_delete_session; |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 483 | } |
| 484 | |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 485 | if (forks) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 486 | err = perf_evlist__prepare_workload(evsel_list, opts, argv); |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 487 | if (err < 0) { |
| 488 | pr_err("Couldn't run the workload!\n"); |
| 489 | goto out_delete_session; |
Jens Axboe | 0a5ac84 | 2009-08-12 11:18:01 +0200 | [diff] [blame] | 490 | } |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 491 | } |
| 492 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 493 | perf_record__open(rec); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 494 | |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 495 | /* |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 496 | * 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] | 497 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 498 | on_exit(perf_record__exit, rec); |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 499 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 500 | if (opts->pipe_output) { |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 501 | err = perf_header__write_pipe(output); |
| 502 | if (err < 0) |
| 503 | return err; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 504 | } else if (rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 505 | err = perf_session__write_header(session, evsel_list, |
| 506 | output, false); |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 507 | if (err < 0) |
| 508 | return err; |
| 509 | } |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 510 | |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 511 | if (!rec->no_buildid |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 512 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 513 | pr_err("Couldn't generate buildids. " |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 514 | "Use --no-buildid to profile anyway.\n"); |
| 515 | return -1; |
| 516 | } |
| 517 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 518 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 519 | |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 520 | machine = perf_session__find_host_machine(session); |
| 521 | if (!machine) { |
| 522 | pr_err("Couldn't find native kernel information.\n"); |
| 523 | return -1; |
| 524 | } |
| 525 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 526 | if (opts->pipe_output) { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 527 | err = perf_event__synthesize_attrs(tool, session, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 528 | process_synthesized_event); |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 529 | if (err < 0) { |
| 530 | pr_err("Couldn't synthesize attrs.\n"); |
| 531 | return err; |
| 532 | } |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 533 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 534 | err = perf_event__synthesize_event_types(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 535 | machine); |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 536 | if (err < 0) { |
| 537 | pr_err("Couldn't synthesize event_types.\n"); |
| 538 | return err; |
| 539 | } |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 540 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 541 | if (have_tracepoints(&evsel_list->entries)) { |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 542 | /* |
| 543 | * FIXME err <= 0 here actually means that |
| 544 | * there were no tracepoints so its not really |
| 545 | * an error, just that we don't need to |
| 546 | * synthesize anything. We really have to |
| 547 | * return this more properly and also |
| 548 | * propagate errors that now are calling die() |
| 549 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 550 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 551 | process_synthesized_event); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 552 | if (err <= 0) { |
| 553 | pr_err("Couldn't record tracing data.\n"); |
| 554 | return err; |
| 555 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 556 | advance_output(rec, err); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 557 | } |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 558 | } |
| 559 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 560 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 561 | machine, "_text"); |
Arnaldo Carvalho de Melo | 7016213 | 2010-03-30 18:27:39 -0300 | [diff] [blame] | 562 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 563 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 564 | machine, "_stext"); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 565 | if (err < 0) |
| 566 | pr_err("Couldn't record kernel reference relocation symbol\n" |
| 567 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 568 | "Check /proc/kallsyms permission or run as root.\n"); |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 569 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 570 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 571 | machine); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 572 | if (err < 0) |
| 573 | pr_err("Couldn't record kernel module information.\n" |
| 574 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 575 | "Check /proc/modules permission or run as root.\n"); |
| 576 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 577 | if (perf_guest) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 578 | perf_session__process_machines(session, tool, |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 579 | perf_event__synthesize_guest_os); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 580 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 581 | if (!opts->system_wide) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 582 | perf_event__synthesize_thread_map(tool, evsel_list->threads, |
Arnaldo Carvalho de Melo | 7c940c1 | 2011-02-11 11:45:54 -0200 | [diff] [blame] | 583 | process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 584 | machine); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 585 | else |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 586 | perf_event__synthesize_threads(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 587 | machine); |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 588 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 589 | if (rec->realtime_prio) { |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 590 | struct sched_param param; |
| 591 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 592 | param.sched_priority = rec->realtime_prio; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 593 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 594 | pr_err("Could not set realtime priority.\n"); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 595 | exit(-1); |
| 596 | } |
| 597 | } |
| 598 | |
David Ahern | 764e16a | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 599 | perf_evlist__enable(evsel_list); |
| 600 | |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 601 | /* |
| 602 | * Let the child rip |
| 603 | */ |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 604 | if (forks) |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 605 | perf_evlist__start_workload(evsel_list); |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 606 | |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 607 | for (;;) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 608 | int hits = rec->samples; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 609 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 610 | perf_record__mmap_read_all(rec); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 611 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 612 | if (hits == rec->samples) { |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 613 | if (done) |
| 614 | break; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 615 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 616 | waking++; |
| 617 | } |
| 618 | |
Arnaldo Carvalho de Melo | 4152ab3 | 2011-07-25 11:06:19 -0300 | [diff] [blame] | 619 | if (done) |
| 620 | perf_evlist__disable(evsel_list); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 621 | } |
| 622 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 623 | if (quiet || signr == SIGUSR1) |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 624 | return 0; |
| 625 | |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 626 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
| 627 | |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 628 | /* |
| 629 | * Approximate RIP event size: 24 bytes. |
| 630 | */ |
| 631 | fprintf(stderr, |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 632 | "[ 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] | 633 | (double)rec->bytes_written / 1024.0 / 1024.0, |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 634 | output_name, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 635 | rec->bytes_written / 24); |
Ingo Molnar | addc278 | 2009-06-02 23:43:11 +0200 | [diff] [blame] | 636 | |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 637 | return 0; |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 638 | |
| 639 | out_delete_session: |
| 640 | perf_session__delete(session); |
| 641 | return err; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 642 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 643 | |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 644 | #define BRANCH_OPT(n, m) \ |
| 645 | { .name = n, .mode = (m) } |
| 646 | |
| 647 | #define BRANCH_END { .name = NULL } |
| 648 | |
| 649 | struct branch_mode { |
| 650 | const char *name; |
| 651 | int mode; |
| 652 | }; |
| 653 | |
| 654 | static const struct branch_mode branch_modes[] = { |
| 655 | BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER), |
| 656 | BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL), |
| 657 | BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV), |
| 658 | BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY), |
| 659 | BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL), |
| 660 | BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN), |
| 661 | BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL), |
| 662 | BRANCH_END |
| 663 | }; |
| 664 | |
| 665 | static int |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 666 | parse_branch_stack(const struct option *opt, const char *str, int unset) |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 667 | { |
| 668 | #define ONLY_PLM \ |
| 669 | (PERF_SAMPLE_BRANCH_USER |\ |
| 670 | PERF_SAMPLE_BRANCH_KERNEL |\ |
| 671 | PERF_SAMPLE_BRANCH_HV) |
| 672 | |
| 673 | uint64_t *mode = (uint64_t *)opt->value; |
| 674 | const struct branch_mode *br; |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 675 | char *s, *os = NULL, *p; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 676 | int ret = -1; |
| 677 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 678 | if (unset) |
| 679 | return 0; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 680 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 681 | /* |
| 682 | * cannot set it twice, -b + --branch-filter for instance |
| 683 | */ |
| 684 | if (*mode) |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 685 | return -1; |
| 686 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 687 | /* str may be NULL in case no arg is passed to -b */ |
| 688 | if (str) { |
| 689 | /* because str is read-only */ |
| 690 | s = os = strdup(str); |
| 691 | if (!s) |
| 692 | return -1; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 693 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 694 | for (;;) { |
| 695 | p = strchr(s, ','); |
| 696 | if (p) |
| 697 | *p = '\0'; |
| 698 | |
| 699 | for (br = branch_modes; br->name; br++) { |
| 700 | if (!strcasecmp(s, br->name)) |
| 701 | break; |
| 702 | } |
| 703 | if (!br->name) { |
| 704 | ui__warning("unknown branch filter %s," |
| 705 | " check man page\n", s); |
| 706 | goto error; |
| 707 | } |
| 708 | |
| 709 | *mode |= br->mode; |
| 710 | |
| 711 | if (!p) |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 712 | break; |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 713 | |
| 714 | s = p + 1; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 715 | } |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 716 | } |
| 717 | ret = 0; |
| 718 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 719 | /* default to any branch */ |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 720 | if ((*mode & ~ONLY_PLM) == 0) { |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 721 | *mode = PERF_SAMPLE_BRANCH_ANY; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 722 | } |
| 723 | error: |
| 724 | free(os); |
| 725 | return ret; |
| 726 | } |
| 727 | |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 728 | static const char * const record_usage[] = { |
Mike Galbraith | 9e09675 | 2009-05-28 16:25:34 +0200 | [diff] [blame] | 729 | "perf record [<options>] [<command>]", |
| 730 | "perf record [<options>] -- <command> [<options>]", |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 731 | NULL |
| 732 | }; |
| 733 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 734 | /* |
| 735 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new |
| 736 | * because we need to have access to it in perf_record__exit, that is called |
| 737 | * after cmd_record() exits, but since record_options need to be accessible to |
| 738 | * builtin-script, leave it here. |
| 739 | * |
| 740 | * At least we don't ouch it in all the other functions here directly. |
| 741 | * |
| 742 | * Just say no to tons of global variables, sigh. |
| 743 | */ |
| 744 | static struct perf_record record = { |
| 745 | .opts = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 746 | .mmap_pages = UINT_MAX, |
| 747 | .user_freq = UINT_MAX, |
| 748 | .user_interval = ULLONG_MAX, |
| 749 | .freq = 1000, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 750 | }, |
| 751 | .write_mode = WRITE_FORCE, |
| 752 | .file_new = true, |
| 753 | }; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 754 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 755 | /* |
| 756 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing |
| 757 | * with it and switch to use the library functions in perf_evlist that came |
| 758 | * from builtin-record.c, i.e. use perf_record_opts, |
| 759 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
| 760 | * using pipes, etc. |
| 761 | */ |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 762 | const struct option record_options[] = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 763 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 764 | "event selector. use 'perf list' to list available events", |
Jiri Olsa | f120f9d | 2011-07-14 11:25:32 +0200 | [diff] [blame] | 765 | parse_events_option), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 766 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 767 | "event filter", parse_filter), |
David Ahern | b52956c | 2012-02-08 09:32:52 -0700 | [diff] [blame] | 768 | OPT_STRING('p', "pid", &record.opts.target_pid, "pid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 769 | "record events on existing process id"), |
David Ahern | b52956c | 2012-02-08 09:32:52 -0700 | [diff] [blame] | 770 | OPT_STRING('t', "tid", &record.opts.target_tid, "tid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 771 | "record events on existing thread id"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 772 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 773 | "collect data with this RT SCHED_FIFO priority"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 774 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
Kirill Smelkov | acac03f | 2011-01-12 17:59:36 +0300 | [diff] [blame] | 775 | "collect data without buffering"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 776 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
Frederic Weisbecker | daac07b | 2009-08-13 10:27:19 +0200 | [diff] [blame] | 777 | "collect raw sample records from all opened counters"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 778 | OPT_BOOLEAN('a', "all-cpus", &record.opts.system_wide, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 779 | "system-wide collection from all CPUs"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 780 | OPT_BOOLEAN('A', "append", &record.append_file, |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 781 | "append to the output file to do incremental profiling"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 782 | OPT_STRING('C', "cpu", &record.opts.cpu_list, "cpu", |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 783 | "list of cpus to monitor"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 784 | OPT_BOOLEAN('f', "force", &record.force, |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 785 | "overwrite existing data file (deprecated)"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 786 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
| 787 | OPT_STRING('o', "output", &record.output_name, "file", |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 788 | "output file name"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 789 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 790 | "child tasks do not inherit counters"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 791 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
| 792 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, |
Arnaldo Carvalho de Melo | 01c2d99 | 2011-11-09 09:16:26 -0200 | [diff] [blame] | 793 | "number of mmap data pages"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 794 | OPT_BOOLEAN(0, "group", &record.opts.group, |
Lin Ming | 43bece7 | 2011-08-17 18:42:07 +0800 | [diff] [blame] | 795 | "put the counters into a counter group"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 796 | OPT_BOOLEAN('g', "call-graph", &record.opts.call_graph, |
Ingo Molnar | 3efa1cc9 | 2009-06-14 15:04:15 +0200 | [diff] [blame] | 797 | "do call-graph (stack chain/backtrace) recording"), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 798 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 799 | "be more verbose (show counter open errors, etc)"), |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 800 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 801 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 802 | "per thread counts"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 803 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
Anton Blanchard | 4bba828 | 2009-07-16 15:44:29 +0200 | [diff] [blame] | 804 | "Sample addresses"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 805 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
Andrew Vagin | 3e76ac7 | 2011-12-20 17:32:45 +0300 | [diff] [blame] | 806 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 807 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 808 | "don't sample"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 809 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 810 | "do not update the buildid cache"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 811 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 812 | "do not collect buildids in perf.data"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 813 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 814 | "monitor event in cgroup name only", |
| 815 | parse_cgroups), |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 816 | OPT_STRING('u', "uid", &record.uid_str, "user", "user to profile"), |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 817 | |
| 818 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, |
| 819 | "branch any", "sample any taken branches", |
| 820 | parse_branch_stack), |
| 821 | |
| 822 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, |
| 823 | "branch filter mask", "branch stack filter modes", |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 824 | parse_branch_stack), |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 825 | OPT_END() |
| 826 | }; |
| 827 | |
Ingo Molnar | f37a291 | 2009-07-01 12:37:06 +0200 | [diff] [blame] | 828 | int cmd_record(int argc, const char **argv, const char *prefix __used) |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 829 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 830 | int err = -ENOMEM; |
| 831 | struct perf_evsel *pos; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 832 | struct perf_evlist *evsel_list; |
| 833 | struct perf_record *rec = &record; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 834 | |
Stephane Eranian | fbe96f2 | 2011-09-30 15:40:40 +0200 | [diff] [blame] | 835 | perf_header__set_cmdline(argc, argv); |
| 836 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 837 | evsel_list = perf_evlist__new(NULL, NULL); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 838 | if (evsel_list == NULL) |
| 839 | return -ENOMEM; |
| 840 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 841 | rec->evlist = evsel_list; |
| 842 | |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 843 | argc = parse_options(argc, argv, record_options, record_usage, |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 844 | PARSE_OPT_STOP_AT_NON_OPTION); |
David Ahern | b52956c | 2012-02-08 09:32:52 -0700 | [diff] [blame] | 845 | if (!argc && !rec->opts.target_pid && !rec->opts.target_tid && |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 846 | !rec->opts.system_wide && !rec->opts.cpu_list && !rec->uid_str) |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 847 | usage_with_options(record_usage, record_options); |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 848 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 849 | if (rec->force && rec->append_file) { |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 850 | fprintf(stderr, "Can't overwrite and append at the same time." |
| 851 | " You need to choose between -f and -A"); |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 852 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 853 | } else if (rec->append_file) { |
| 854 | rec->write_mode = WRITE_APPEND; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 855 | } else { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 856 | rec->write_mode = WRITE_FORCE; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 857 | } |
| 858 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 859 | if (nr_cgroups && !rec->opts.system_wide) { |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 860 | fprintf(stderr, "cgroup monitoring only available in" |
| 861 | " system-wide mode\n"); |
| 862 | usage_with_options(record_usage, record_options); |
| 863 | } |
| 864 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 865 | symbol__init(); |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 866 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 867 | if (symbol_conf.kptr_restrict) |
Arnaldo Carvalho de Melo | 646aaea | 2011-05-27 11:00:41 -0300 | [diff] [blame] | 868 | pr_warning( |
| 869 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" |
| 870 | "check /proc/sys/kernel/kptr_restrict.\n\n" |
| 871 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" |
| 872 | "file is not found in the buildid cache or in the vmlinux path.\n\n" |
| 873 | "Samples in kernel modules won't be resolved at all.\n\n" |
| 874 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" |
| 875 | "even with a suitable vmlinux or kallsyms file.\n\n"); |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 876 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 877 | if (rec->no_buildid_cache || rec->no_buildid) |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 878 | disable_buildid_cache(); |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 879 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 880 | if (evsel_list->nr_entries == 0 && |
| 881 | perf_evlist__add_default(evsel_list) < 0) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 882 | pr_err("Not enough memory for event selector list\n"); |
| 883 | goto out_symbol_exit; |
Peter Zijlstra | bbd36e5 | 2009-06-11 23:11:50 +0200 | [diff] [blame] | 884 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 885 | |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 886 | rec->opts.uid = parse_target_uid(rec->uid_str, rec->opts.target_tid, |
| 887 | rec->opts.target_pid); |
| 888 | if (rec->uid_str != NULL && rec->opts.uid == UINT_MAX - 1) |
| 889 | goto out_free_fd; |
| 890 | |
David Ahern | b52956c | 2012-02-08 09:32:52 -0700 | [diff] [blame] | 891 | if (rec->opts.target_pid) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 892 | rec->opts.target_tid = rec->opts.target_pid; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 893 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 894 | if (perf_evlist__create_maps(evsel_list, rec->opts.target_pid, |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 895 | rec->opts.target_tid, rec->opts.uid, |
| 896 | rec->opts.cpu_list) < 0) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 897 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 898 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 899 | list_for_each_entry(pos, &evsel_list->entries, node) { |
Arnaldo Carvalho de Melo | ad7f4e3 | 2011-01-17 18:28:13 -0200 | [diff] [blame] | 900 | if (perf_header__push_event(pos->attr.config, event_name(pos))) |
| 901 | goto out_free_fd; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 902 | } |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 903 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 904 | if (rec->opts.user_interval != ULLONG_MAX) |
| 905 | rec->opts.default_interval = rec->opts.user_interval; |
| 906 | if (rec->opts.user_freq != UINT_MAX) |
| 907 | rec->opts.freq = rec->opts.user_freq; |
Frederic Weisbecker | f921281 | 2010-04-14 22:09:02 +0200 | [diff] [blame] | 908 | |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 909 | /* |
| 910 | * User specified count overrides default frequency. |
| 911 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 912 | if (rec->opts.default_interval) |
| 913 | rec->opts.freq = 0; |
| 914 | else if (rec->opts.freq) { |
| 915 | rec->opts.default_interval = rec->opts.freq; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 916 | } else { |
| 917 | fprintf(stderr, "frequency and count are zero, aborting\n"); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 918 | err = -EINVAL; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 919 | goto out_free_fd; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 920 | } |
| 921 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 922 | err = __cmd_record(&record, argc, argv); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 923 | out_free_fd: |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 924 | perf_evlist__delete_maps(evsel_list); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 925 | out_symbol_exit: |
| 926 | symbol__exit(); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 927 | return err; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 928 | } |