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 | 8f28827a | 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 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 65 | static int 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 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 70 | if (ret < 0) { |
| 71 | pr_err("failed to write\n"); |
| 72 | return -1; |
| 73 | } |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 74 | |
| 75 | size -= ret; |
| 76 | buf += ret; |
| 77 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 78 | rec->bytes_written += ret; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 79 | } |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 80 | |
| 81 | return 0; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 82 | } |
| 83 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 84 | static int process_synthesized_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 85 | union perf_event *event, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 86 | struct perf_sample *sample __maybe_unused, |
| 87 | struct machine *machine __maybe_unused) |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 88 | { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 89 | struct perf_record *rec = container_of(tool, struct perf_record, tool); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 90 | if (write_output(rec, event, event->header.size) < 0) |
| 91 | return -1; |
| 92 | |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 93 | return 0; |
| 94 | } |
| 95 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 96 | static int perf_record__mmap_read(struct perf_record *rec, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 97 | struct perf_mmap *md) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 98 | { |
Arnaldo Carvalho de Melo | 744bd8a | 2011-01-12 17:07:28 -0200 | [diff] [blame] | 99 | unsigned int head = perf_mmap__read_head(md); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 100 | unsigned int old = md->prev; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 101 | unsigned char *data = md->base + rec->page_size; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 102 | unsigned long size; |
| 103 | void *buf; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 104 | int rc = 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 105 | |
Arnaldo Carvalho de Melo | dc82009 | 2011-01-28 14:49:19 -0200 | [diff] [blame] | 106 | if (old == head) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 107 | return 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 108 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 109 | rec->samples++; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 110 | |
| 111 | size = head - old; |
| 112 | |
| 113 | if ((old & md->mask) + size != (head & md->mask)) { |
| 114 | buf = &data[old & md->mask]; |
| 115 | size = md->mask + 1 - (old & md->mask); |
| 116 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 117 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 118 | if (write_output(rec, buf, size) < 0) { |
| 119 | rc = -1; |
| 120 | goto out; |
| 121 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | buf = &data[old & md->mask]; |
| 125 | size = head - old; |
| 126 | old += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 127 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 128 | if (write_output(rec, buf, size) < 0) { |
| 129 | rc = -1; |
| 130 | goto out; |
| 131 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 132 | |
| 133 | md->prev = old; |
Arnaldo Carvalho de Melo | 115d2d8 | 2011-01-12 17:11:53 -0200 | [diff] [blame] | 134 | perf_mmap__write_tail(md, old); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 135 | |
| 136 | out: |
| 137 | return rc; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | static volatile int done = 0; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 141 | static volatile int signr = -1; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 142 | static volatile int child_finished = 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 143 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 144 | static void sig_handler(int sig) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 145 | { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 146 | if (sig == SIGCHLD) |
| 147 | child_finished = 1; |
| 148 | |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 149 | done = 1; |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 150 | signr = sig; |
| 151 | } |
| 152 | |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 153 | static void perf_record__sig_exit(int exit_status __maybe_unused, void *arg) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 154 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 155 | struct perf_record *rec = arg; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 156 | int status; |
| 157 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 158 | if (rec->evlist->workload.pid > 0) { |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 159 | if (!child_finished) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 160 | kill(rec->evlist->workload.pid, SIGTERM); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 161 | |
| 162 | wait(&status); |
| 163 | if (WIFSIGNALED(status)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 164 | psignal(WTERMSIG(status), rec->progname); |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 165 | } |
Chris Wilson | 933da83 | 2009-10-04 01:35:01 +0100 | [diff] [blame] | 166 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 167 | if (signr == -1 || signr == SIGUSR1) |
Peter Zijlstra | f7b7c26 | 2009-06-10 15:55:59 +0200 | [diff] [blame] | 168 | return; |
| 169 | |
| 170 | signal(signr, SIG_DFL); |
| 171 | kill(getpid(), signr); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 172 | } |
| 173 | |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 174 | static bool perf_evlist__equal(struct perf_evlist *evlist, |
| 175 | struct perf_evlist *other) |
| 176 | { |
| 177 | struct perf_evsel *pos, *pair; |
| 178 | |
| 179 | if (evlist->nr_entries != other->nr_entries) |
| 180 | return false; |
| 181 | |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 182 | pair = perf_evlist__first(other); |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 183 | |
| 184 | list_for_each_entry(pos, &evlist->entries, node) { |
| 185 | if (memcmp(&pos->attr, &pair->attr, sizeof(pos->attr) != 0)) |
| 186 | return false; |
Arnaldo Carvalho de Melo | 0c21f73 | 2012-08-14 16:42:15 -0300 | [diff] [blame] | 187 | pair = perf_evsel__next(pair); |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | return true; |
| 191 | } |
| 192 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 193 | static int perf_record__open(struct perf_record *rec) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 194 | { |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 195 | struct perf_evsel *pos; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 196 | struct perf_evlist *evlist = rec->evlist; |
| 197 | struct perf_session *session = rec->session; |
| 198 | struct perf_record_opts *opts = &rec->opts; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 199 | int rc = 0; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 200 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 201 | perf_evlist__config_attrs(evlist, opts); |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 202 | |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 203 | if (opts->group) |
Arnaldo Carvalho de Melo | 63dab22 | 2012-08-14 16:35:48 -0300 | [diff] [blame] | 204 | perf_evlist__set_leader(evlist); |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 205 | |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 206 | list_for_each_entry(pos, &evlist->entries, node) { |
| 207 | struct perf_event_attr *attr = &pos->attr; |
| 208 | /* |
| 209 | * Check if parse_single_tracepoint_event has already asked for |
| 210 | * PERF_SAMPLE_TIME. |
| 211 | * |
| 212 | * XXX this is kludgy but short term fix for problems introduced by |
| 213 | * eac23d1c that broke 'perf script' by having different sample_types |
| 214 | * when using multiple tracepoint events when we use a perf binary |
| 215 | * that tries to use sample_id_all on an older kernel. |
| 216 | * |
| 217 | * We need to move counter creation to perf_session, support |
| 218 | * different sample_types, etc. |
| 219 | */ |
| 220 | bool time_needed = attr->sample_type & PERF_SAMPLE_TIME; |
| 221 | |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 222 | fallback_missing_features: |
| 223 | if (opts->exclude_guest_missing) |
| 224 | attr->exclude_guest = attr->exclude_host = 0; |
Arnaldo Carvalho de Melo | 9c90a61 | 2010-12-02 10:25:28 -0200 | [diff] [blame] | 225 | retry_sample_id: |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 226 | attr->sample_id_all = opts->sample_id_all_missing ? 0 : 1; |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 227 | try_again: |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 228 | if (perf_evsel__open(pos, evlist->cpus, evlist->threads) < 0) { |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 229 | int err = errno; |
Ingo Molnar | f250c030 | 2009-06-05 13:18:41 +0200 | [diff] [blame] | 230 | |
Arnaldo Carvalho de Melo | c286c41 | 2011-03-28 09:50:11 -0300 | [diff] [blame] | 231 | if (err == EPERM || err == EACCES) { |
Arnaldo Carvalho de Melo | b8631e6 | 2011-10-26 08:02:55 -0200 | [diff] [blame] | 232 | ui__error_paranoid(); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 233 | rc = -err; |
| 234 | goto out; |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 235 | } else if (err == ENODEV && opts->target.cpu_list) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 236 | pr_err("No such device - did you specify" |
| 237 | " an out-of-range profile CPU?\n"); |
| 238 | rc = -err; |
| 239 | goto out; |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 240 | } else if (err == EINVAL) { |
| 241 | if (!opts->exclude_guest_missing && |
| 242 | (attr->exclude_guest || attr->exclude_host)) { |
| 243 | pr_debug("Old kernel, cannot exclude " |
| 244 | "guest or host samples.\n"); |
| 245 | opts->exclude_guest_missing = true; |
| 246 | goto fallback_missing_features; |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 247 | } else if (!opts->sample_id_all_missing) { |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 248 | /* |
| 249 | * Old kernel, no attr->sample_id_type_all field |
| 250 | */ |
Arnaldo Carvalho de Melo | 808e122 | 2012-02-14 14:18:57 -0200 | [diff] [blame] | 251 | opts->sample_id_all_missing = true; |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 252 | if (!opts->sample_time && !opts->raw_samples && !time_needed) |
| 253 | attr->sample_type &= ~PERF_SAMPLE_TIME; |
Ian Munsie | eac23d1 | 2010-12-09 16:33:53 +1100 | [diff] [blame] | 254 | |
Arnaldo Carvalho de Melo | 0c97812 | 2012-02-14 14:05:30 -0200 | [diff] [blame] | 255 | goto retry_sample_id; |
| 256 | } |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 257 | } |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 258 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 259 | /* |
| 260 | * If it's cycles then fall back to hrtimer |
| 261 | * based cpu-clock-tick sw counter, which |
David Ahern | 028d455 | 2012-05-08 09:28:57 -0600 | [diff] [blame] | 262 | * is always available even if no PMU support. |
| 263 | * |
| 264 | * PPC returns ENXIO until 2.6.37 (behavior changed |
| 265 | * with commit b0a873e). |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 266 | */ |
David Ahern | 028d455 | 2012-05-08 09:28:57 -0600 | [diff] [blame] | 267 | if ((err == ENOENT || err == ENXIO) |
| 268 | && attr->type == PERF_TYPE_HARDWARE |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 269 | && attr->config == PERF_COUNT_HW_CPU_CYCLES) { |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 270 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 271 | if (verbose) |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 272 | ui__warning("The cycles event is not supported, " |
| 273 | "trying to fall back to cpu-clock-ticks\n"); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 274 | attr->type = PERF_TYPE_SOFTWARE; |
| 275 | attr->config = PERF_COUNT_SW_CPU_CLOCK; |
David Ahern | d1cae34 | 2012-05-08 10:50:11 -0600 | [diff] [blame] | 276 | if (pos->name) { |
| 277 | free(pos->name); |
| 278 | pos->name = NULL; |
| 279 | } |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 280 | goto try_again; |
| 281 | } |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 282 | |
| 283 | if (err == ENOENT) { |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 284 | ui__error("The %s event is not supported.\n", |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 285 | perf_evsel__name(pos)); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 286 | rc = -err; |
| 287 | goto out; |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 288 | } |
| 289 | |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 290 | printf("\n"); |
Stephane Eranian | 1863fbb | 2012-09-20 18:19:45 +0200 | [diff] [blame] | 291 | error("sys_perf_event_open() syscall returned with %d " |
| 292 | "(%s) for event %s. /bin/dmesg may provide " |
| 293 | "additional information.\n", |
| 294 | err, strerror(err), perf_evsel__name(pos)); |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 295 | |
| 296 | #if defined(__i386__) || defined(__x86_64__) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 297 | if (attr->type == PERF_TYPE_HARDWARE && |
| 298 | err == EOPNOTSUPP) { |
| 299 | pr_err("No hardware sampling interrupt available." |
| 300 | " No APIC? If so then you can boot the kernel" |
| 301 | " with the \"lapic\" boot parameter to" |
| 302 | " force-enable it.\n"); |
| 303 | rc = -err; |
| 304 | goto out; |
| 305 | } |
Simon Kaempflein | bfd4511 | 2009-11-16 15:25:53 +1000 | [diff] [blame] | 306 | #endif |
| 307 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 308 | pr_err("No CONFIG_PERF_EVENTS=y kernel support configured?\n"); |
| 309 | rc = -err; |
| 310 | goto out; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 311 | } |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 312 | } |
Arnaldo Carvalho de Melo | a43d3f0 | 2010-12-25 12:12:25 -0200 | [diff] [blame] | 313 | |
Arnaldo Carvalho de Melo | 1491a63 | 2012-09-26 14:43:13 -0300 | [diff] [blame] | 314 | if (perf_evlist__apply_filters(evlist)) { |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 315 | error("failed to set filter with %d (%s)\n", errno, |
| 316 | strerror(errno)); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 317 | rc = -1; |
| 318 | goto out; |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 319 | } |
| 320 | |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame] | 321 | if (perf_evlist__mmap(evlist, opts->mmap_pages, false) < 0) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 322 | if (errno == EPERM) { |
| 323 | pr_err("Permission error mapping pages.\n" |
| 324 | "Consider increasing " |
| 325 | "/proc/sys/kernel/perf_event_mlock_kb,\n" |
| 326 | "or try again with a smaller value of -m/--mmap_pages.\n" |
| 327 | "(current value: %d)\n", opts->mmap_pages); |
| 328 | rc = -errno; |
| 329 | } else if (!is_power_of_2(opts->mmap_pages)) { |
| 330 | pr_err("--mmap_pages/-m value must be a power of two."); |
| 331 | rc = -EINVAL; |
| 332 | } else { |
| 333 | pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno)); |
| 334 | rc = -errno; |
| 335 | } |
| 336 | goto out; |
Nelson Elhage | 18e6093 | 2011-12-19 08:39:31 -0500 | [diff] [blame] | 337 | } |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 338 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 339 | if (rec->file_new) |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 340 | session->evlist = evlist; |
| 341 | else { |
| 342 | if (!perf_evlist__equal(session->evlist, evlist)) { |
| 343 | fprintf(stderr, "incompatible append\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 344 | rc = -1; |
| 345 | goto out; |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 346 | } |
| 347 | } |
| 348 | |
Arnaldo Carvalho de Melo | 7b56cce | 2012-08-01 19:31:00 -0300 | [diff] [blame] | 349 | perf_session__set_id_hdr_size(session); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 350 | out: |
| 351 | return rc; |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 352 | } |
| 353 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 354 | static int process_buildids(struct perf_record *rec) |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 355 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 356 | u64 size = lseek(rec->output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 357 | |
Arnaldo Carvalho de Melo | 9f591fd | 2010-03-11 15:53:11 -0300 | [diff] [blame] | 358 | if (size == 0) |
| 359 | return 0; |
| 360 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 361 | rec->session->fd = rec->output; |
| 362 | return __perf_session__process_events(rec->session, rec->post_processing_offset, |
| 363 | size - rec->post_processing_offset, |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 364 | size, &build_id__mark_dso_hit_ops); |
| 365 | } |
| 366 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 367 | static void perf_record__exit(int status, void *arg) |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 368 | { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 369 | struct perf_record *rec = arg; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 370 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 371 | if (status != 0) |
| 372 | return; |
| 373 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 374 | if (!rec->opts.pipe_output) { |
| 375 | rec->session->header.data_size += rec->bytes_written; |
| 376 | |
| 377 | if (!rec->no_buildid) |
| 378 | process_buildids(rec); |
| 379 | perf_session__write_header(rec->session, rec->evlist, |
| 380 | rec->output, true); |
| 381 | perf_session__delete(rec->session); |
| 382 | perf_evlist__delete(rec->evlist); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 383 | symbol__exit(); |
Tom Zanussi | c7929e4 | 2010-04-01 23:59:22 -0500 | [diff] [blame] | 384 | } |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 385 | } |
| 386 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 387 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 388 | { |
| 389 | int err; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 390 | struct perf_tool *tool = data; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 391 | |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 392 | if (machine__is_host(machine)) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 393 | return; |
| 394 | |
| 395 | /* |
| 396 | *As for guest kernel when processing subcommand record&report, |
| 397 | *we arrange module mmap prior to guest kernel mmap and trigger |
| 398 | *a preload dso because default guest module symbols are loaded |
| 399 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This |
| 400 | *method is used to avoid symbol missing when the first addr is |
| 401 | *in module instead of in guest kernel. |
| 402 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 403 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 404 | machine); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 405 | if (err < 0) |
| 406 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 407 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 408 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 409 | /* |
| 410 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms |
| 411 | * have no _text sometimes. |
| 412 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 413 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 414 | machine, "_text"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 415 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 416 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 417 | machine, "_stext"); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 418 | if (err < 0) |
| 419 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 420 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 421 | } |
| 422 | |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 423 | static struct perf_event_header finished_round_event = { |
| 424 | .size = sizeof(struct perf_event_header), |
| 425 | .type = PERF_RECORD_FINISHED_ROUND, |
| 426 | }; |
| 427 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 428 | static int perf_record__mmap_read_all(struct perf_record *rec) |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 429 | { |
Peter Zijlstra | 0e2e63d | 2010-05-20 14:45:26 +0200 | [diff] [blame] | 430 | int i; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 431 | int rc = 0; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 432 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 433 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 434 | if (rec->evlist->mmap[i].base) { |
| 435 | if (perf_record__mmap_read(rec, &rec->evlist->mmap[i]) != 0) { |
| 436 | rc = -1; |
| 437 | goto out; |
| 438 | } |
| 439 | } |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 440 | } |
| 441 | |
Stephane Eranian | 2eeaaa0 | 2012-05-15 13:28:13 +0200 | [diff] [blame] | 442 | if (perf_header__has_feat(&rec->session->header, HEADER_TRACING_DATA)) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 443 | rc = write_output(rec, &finished_round_event, |
| 444 | sizeof(finished_round_event)); |
| 445 | |
| 446 | out: |
| 447 | return rc; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 448 | } |
| 449 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 450 | 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] | 451 | { |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 452 | struct stat st; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 453 | int flags; |
Robert Richter | 781ba9d | 2011-12-15 17:32:40 +0100 | [diff] [blame] | 454 | int err, output, feat; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 455 | unsigned long waking = 0; |
Zhang, Yanmin | 46be604 | 2010-03-18 11:36:04 -0300 | [diff] [blame] | 456 | const bool forks = argc > 0; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 457 | struct machine *machine; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 458 | struct perf_tool *tool = &rec->tool; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 459 | struct perf_record_opts *opts = &rec->opts; |
| 460 | struct perf_evlist *evsel_list = rec->evlist; |
| 461 | const char *output_name = rec->output_name; |
| 462 | struct perf_session *session; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 463 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 464 | rec->progname = argv[0]; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 465 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 466 | rec->page_size = sysconf(_SC_PAGE_SIZE); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 467 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 468 | on_exit(perf_record__sig_exit, rec); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 469 | signal(SIGCHLD, sig_handler); |
| 470 | signal(SIGINT, sig_handler); |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 471 | signal(SIGUSR1, sig_handler); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 472 | |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 473 | if (!output_name) { |
| 474 | if (!fstat(STDOUT_FILENO, &st) && S_ISFIFO(st.st_mode)) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 475 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 476 | else |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 477 | rec->output_name = output_name = "perf.data"; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 478 | } |
| 479 | if (output_name) { |
| 480 | if (!strcmp(output_name, "-")) |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 481 | opts->pipe_output = true; |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 482 | else if (!stat(output_name, &st) && st.st_size) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 483 | if (rec->write_mode == WRITE_FORCE) { |
Franck Bui-Huu | d7065ad | 2011-01-16 17:14:45 +0100 | [diff] [blame] | 484 | char oldname[PATH_MAX]; |
| 485 | snprintf(oldname, sizeof(oldname), "%s.old", |
| 486 | output_name); |
| 487 | unlink(oldname); |
| 488 | rename(output_name, oldname); |
| 489 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 490 | } else if (rec->write_mode == WRITE_APPEND) { |
| 491 | rec->write_mode = WRITE_FORCE; |
Pierre Habouzit | 266e0e2 | 2009-08-07 14:16:01 +0200 | [diff] [blame] | 492 | } |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 493 | } |
| 494 | |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 495 | flags = O_CREAT|O_RDWR; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 496 | if (rec->write_mode == WRITE_APPEND) |
| 497 | rec->file_new = 0; |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 498 | else |
| 499 | flags |= O_TRUNC; |
| 500 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 501 | if (opts->pipe_output) |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 502 | output = STDOUT_FILENO; |
| 503 | else |
| 504 | output = open(output_name, flags, S_IRUSR | S_IWUSR); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 505 | if (output < 0) { |
| 506 | perror("failed to create output file"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 507 | return -1; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 508 | } |
| 509 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 510 | rec->output = output; |
| 511 | |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 512 | session = perf_session__new(output_name, O_WRONLY, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 513 | rec->write_mode == WRITE_FORCE, false, NULL); |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 514 | if (session == NULL) { |
Arnaldo Carvalho de Melo | a9a70bb | 2009-11-17 01:18:11 -0200 | [diff] [blame] | 515 | pr_err("Not enough memory for reading perf file header\n"); |
| 516 | return -1; |
| 517 | } |
| 518 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 519 | rec->session = session; |
| 520 | |
Robert Richter | 781ba9d | 2011-12-15 17:32:40 +0100 | [diff] [blame] | 521 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
| 522 | perf_header__set_feat(&session->header, feat); |
| 523 | |
| 524 | if (rec->no_buildid) |
| 525 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
| 526 | |
| 527 | if (!have_tracepoints(&evsel_list->entries)) |
Stephane Eranian | 2eeaaa0 | 2012-05-15 13:28:13 +0200 | [diff] [blame] | 528 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 529 | |
Stephane Eranian | 330aa67 | 2012-03-08 23:47:46 +0100 | [diff] [blame] | 530 | if (!rec->opts.branch_stack) |
| 531 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); |
| 532 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 533 | if (!rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 534 | err = perf_session__read_header(session, output); |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 535 | if (err < 0) |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 536 | goto out_delete_session; |
Arnaldo Carvalho de Melo | 4dc0a04 | 2009-11-19 14:55:55 -0200 | [diff] [blame] | 537 | } |
| 538 | |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 539 | if (forks) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 540 | err = perf_evlist__prepare_workload(evsel_list, opts, argv); |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 541 | if (err < 0) { |
| 542 | pr_err("Couldn't run the workload!\n"); |
| 543 | goto out_delete_session; |
Jens Axboe | 0a5ac84 | 2009-08-12 11:18:01 +0200 | [diff] [blame] | 544 | } |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 545 | } |
| 546 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 547 | if (perf_record__open(rec) != 0) { |
| 548 | err = -1; |
| 549 | goto out_delete_session; |
| 550 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 551 | |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 552 | /* |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 553 | * 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] | 554 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 555 | on_exit(perf_record__exit, rec); |
Arnaldo Carvalho de Melo | 712a4b6 | 2011-02-17 12:18:42 -0200 | [diff] [blame] | 556 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 557 | if (opts->pipe_output) { |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 558 | err = perf_header__write_pipe(output); |
| 559 | if (err < 0) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 560 | goto out_delete_session; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 561 | } else if (rec->file_new) { |
Arnaldo Carvalho de Melo | a91e543 | 2011-03-10 11:15:54 -0300 | [diff] [blame] | 562 | err = perf_session__write_header(session, evsel_list, |
| 563 | output, false); |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 564 | if (err < 0) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 565 | goto out_delete_session; |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 566 | } |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 567 | |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 568 | if (!rec->no_buildid |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 569 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 570 | pr_err("Couldn't generate buildids. " |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 571 | "Use --no-buildid to profile anyway.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 572 | err = -1; |
| 573 | goto out_delete_session; |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 574 | } |
| 575 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 576 | rec->post_processing_offset = lseek(output, 0, SEEK_CUR); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 577 | |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 578 | machine = perf_session__find_host_machine(session); |
| 579 | if (!machine) { |
| 580 | pr_err("Couldn't find native kernel information.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 581 | err = -1; |
| 582 | goto out_delete_session; |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 583 | } |
| 584 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 585 | if (opts->pipe_output) { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 586 | err = perf_event__synthesize_attrs(tool, session, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 587 | process_synthesized_event); |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 588 | if (err < 0) { |
| 589 | pr_err("Couldn't synthesize attrs.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 590 | goto out_delete_session; |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 591 | } |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 592 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 593 | err = perf_event__synthesize_event_types(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 594 | machine); |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 595 | if (err < 0) { |
| 596 | pr_err("Couldn't synthesize event_types.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 597 | goto out_delete_session; |
Tom Zanussi | cd19a03 | 2010-04-01 23:59:20 -0500 | [diff] [blame] | 598 | } |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 599 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 600 | if (have_tracepoints(&evsel_list->entries)) { |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 601 | /* |
| 602 | * FIXME err <= 0 here actually means that |
| 603 | * there were no tracepoints so its not really |
| 604 | * an error, just that we don't need to |
| 605 | * synthesize anything. We really have to |
| 606 | * return this more properly and also |
| 607 | * propagate errors that now are calling die() |
| 608 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 609 | err = perf_event__synthesize_tracing_data(tool, output, evsel_list, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 610 | process_synthesized_event); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 611 | if (err <= 0) { |
| 612 | pr_err("Couldn't record tracing data.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 613 | goto out_delete_session; |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 614 | } |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 615 | advance_output(rec, err); |
Tom Zanussi | 63e0c77 | 2010-05-03 00:14:48 -0500 | [diff] [blame] | 616 | } |
Tom Zanussi | 2c46dbb | 2010-04-01 23:59:19 -0500 | [diff] [blame] | 617 | } |
| 618 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 619 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 620 | machine, "_text"); |
Arnaldo Carvalho de Melo | 7016213 | 2010-03-30 18:27:39 -0300 | [diff] [blame] | 621 | if (err < 0) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 622 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 623 | machine, "_stext"); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 624 | if (err < 0) |
| 625 | pr_err("Couldn't record kernel reference relocation symbol\n" |
| 626 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 627 | "Check /proc/kallsyms permission or run as root.\n"); |
Arnaldo Carvalho de Melo | 56b03f3 | 2010-01-05 16:50:31 -0200 | [diff] [blame] | 628 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 629 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 630 | machine); |
Arnaldo Carvalho de Melo | c1a3a4b | 2010-11-22 14:01:55 -0200 | [diff] [blame] | 631 | if (err < 0) |
| 632 | pr_err("Couldn't record kernel module information.\n" |
| 633 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 634 | "Check /proc/modules permission or run as root.\n"); |
| 635 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 636 | if (perf_guest) |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 637 | perf_session__process_machines(session, tool, |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 638 | perf_event__synthesize_guest_os); |
Arnaldo Carvalho de Melo | b7cece7 | 2010-01-13 13:22:17 -0200 | [diff] [blame] | 639 | |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 640 | if (!opts->target.system_wide) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 641 | err = perf_event__synthesize_thread_map(tool, evsel_list->threads, |
Arnaldo Carvalho de Melo | 7c940c1 | 2011-02-11 11:45:54 -0200 | [diff] [blame] | 642 | process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 643 | machine); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 644 | else |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 645 | err = perf_event__synthesize_threads(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 646 | machine); |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 647 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 648 | if (err != 0) |
| 649 | goto out_delete_session; |
| 650 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 651 | if (rec->realtime_prio) { |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 652 | struct sched_param param; |
| 653 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 654 | param.sched_priority = rec->realtime_prio; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 655 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 656 | pr_err("Could not set realtime priority.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 657 | err = -1; |
| 658 | goto out_delete_session; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 659 | } |
| 660 | } |
| 661 | |
David Ahern | 764e16a3 | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 662 | perf_evlist__enable(evsel_list); |
| 663 | |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 664 | /* |
| 665 | * Let the child rip |
| 666 | */ |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 667 | if (forks) |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 668 | perf_evlist__start_workload(evsel_list); |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 669 | |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 670 | for (;;) { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 671 | int hits = rec->samples; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 672 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 673 | if (perf_record__mmap_read_all(rec) < 0) { |
| 674 | err = -1; |
| 675 | goto out_delete_session; |
| 676 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 677 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 678 | if (hits == rec->samples) { |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 679 | if (done) |
| 680 | break; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 681 | err = poll(evsel_list->pollfd, evsel_list->nr_fds, -1); |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 682 | waking++; |
| 683 | } |
| 684 | |
Arnaldo Carvalho de Melo | 4152ab3 | 2011-07-25 11:06:19 -0300 | [diff] [blame] | 685 | if (done) |
| 686 | perf_evlist__disable(evsel_list); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 687 | } |
| 688 | |
Arnaldo Carvalho de Melo | 18483b8 | 2010-12-06 15:13:38 -0200 | [diff] [blame] | 689 | if (quiet || signr == SIGUSR1) |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 690 | return 0; |
| 691 | |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 692 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
| 693 | |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 694 | /* |
| 695 | * Approximate RIP event size: 24 bytes. |
| 696 | */ |
| 697 | fprintf(stderr, |
Arnaldo Carvalho de Melo | 9486aa3 | 2011-01-22 20:37:02 -0200 | [diff] [blame] | 698 | "[ 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] | 699 | (double)rec->bytes_written / 1024.0 / 1024.0, |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 700 | output_name, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 701 | rec->bytes_written / 24); |
Ingo Molnar | addc278 | 2009-06-02 23:43:11 +0200 | [diff] [blame] | 702 | |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 703 | return 0; |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 704 | |
| 705 | out_delete_session: |
| 706 | perf_session__delete(session); |
| 707 | return err; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 708 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 709 | |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 710 | #define BRANCH_OPT(n, m) \ |
| 711 | { .name = n, .mode = (m) } |
| 712 | |
| 713 | #define BRANCH_END { .name = NULL } |
| 714 | |
| 715 | struct branch_mode { |
| 716 | const char *name; |
| 717 | int mode; |
| 718 | }; |
| 719 | |
| 720 | static const struct branch_mode branch_modes[] = { |
| 721 | BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER), |
| 722 | BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL), |
| 723 | BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV), |
| 724 | BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY), |
| 725 | BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL), |
| 726 | BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN), |
| 727 | BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL), |
| 728 | BRANCH_END |
| 729 | }; |
| 730 | |
| 731 | static int |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 732 | 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] | 733 | { |
| 734 | #define ONLY_PLM \ |
| 735 | (PERF_SAMPLE_BRANCH_USER |\ |
| 736 | PERF_SAMPLE_BRANCH_KERNEL |\ |
| 737 | PERF_SAMPLE_BRANCH_HV) |
| 738 | |
| 739 | uint64_t *mode = (uint64_t *)opt->value; |
| 740 | const struct branch_mode *br; |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 741 | char *s, *os = NULL, *p; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 742 | int ret = -1; |
| 743 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 744 | if (unset) |
| 745 | return 0; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 746 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 747 | /* |
| 748 | * cannot set it twice, -b + --branch-filter for instance |
| 749 | */ |
| 750 | if (*mode) |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 751 | return -1; |
| 752 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 753 | /* str may be NULL in case no arg is passed to -b */ |
| 754 | if (str) { |
| 755 | /* because str is read-only */ |
| 756 | s = os = strdup(str); |
| 757 | if (!s) |
| 758 | return -1; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 759 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 760 | for (;;) { |
| 761 | p = strchr(s, ','); |
| 762 | if (p) |
| 763 | *p = '\0'; |
| 764 | |
| 765 | for (br = branch_modes; br->name; br++) { |
| 766 | if (!strcasecmp(s, br->name)) |
| 767 | break; |
| 768 | } |
| 769 | if (!br->name) { |
| 770 | ui__warning("unknown branch filter %s," |
| 771 | " check man page\n", s); |
| 772 | goto error; |
| 773 | } |
| 774 | |
| 775 | *mode |= br->mode; |
| 776 | |
| 777 | if (!p) |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 778 | break; |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 779 | |
| 780 | s = p + 1; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 781 | } |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 782 | } |
| 783 | ret = 0; |
| 784 | |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 785 | /* default to any branch */ |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 786 | if ((*mode & ~ONLY_PLM) == 0) { |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 787 | *mode = PERF_SAMPLE_BRANCH_ANY; |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 788 | } |
| 789 | error: |
| 790 | free(os); |
| 791 | return ret; |
| 792 | } |
| 793 | |
Namhyung Kim | 95485b1 | 2012-09-28 18:32:00 +0900 | [diff] [blame] | 794 | #ifdef LIBUNWIND_SUPPORT |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 795 | static int get_stack_size(char *str, unsigned long *_size) |
| 796 | { |
| 797 | char *endptr; |
| 798 | unsigned long size; |
| 799 | unsigned long max_size = round_down(USHRT_MAX, sizeof(u64)); |
| 800 | |
| 801 | size = strtoul(str, &endptr, 0); |
| 802 | |
| 803 | do { |
| 804 | if (*endptr) |
| 805 | break; |
| 806 | |
| 807 | size = round_up(size, sizeof(u64)); |
| 808 | if (!size || size > max_size) |
| 809 | break; |
| 810 | |
| 811 | *_size = size; |
| 812 | return 0; |
| 813 | |
| 814 | } while (0); |
| 815 | |
| 816 | pr_err("callchain: Incorrect stack dump size (max %ld): %s\n", |
| 817 | max_size, str); |
| 818 | return -1; |
| 819 | } |
Namhyung Kim | 95485b1 | 2012-09-28 18:32:00 +0900 | [diff] [blame] | 820 | #endif /* LIBUNWIND_SUPPORT */ |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 821 | |
| 822 | static int |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 823 | parse_callchain_opt(const struct option *opt __maybe_unused, const char *arg, |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 824 | int unset) |
| 825 | { |
| 826 | struct perf_record *rec = (struct perf_record *)opt->value; |
| 827 | char *tok, *name, *saveptr = NULL; |
| 828 | char *buf; |
| 829 | int ret = -1; |
| 830 | |
| 831 | /* --no-call-graph */ |
| 832 | if (unset) |
| 833 | return 0; |
| 834 | |
| 835 | /* We specified default option if none is provided. */ |
| 836 | BUG_ON(!arg); |
| 837 | |
| 838 | /* We need buffer that we know we can write to. */ |
| 839 | buf = malloc(strlen(arg) + 1); |
| 840 | if (!buf) |
| 841 | return -ENOMEM; |
| 842 | |
| 843 | strcpy(buf, arg); |
| 844 | |
| 845 | tok = strtok_r((char *)buf, ",", &saveptr); |
| 846 | name = tok ? : (char *)buf; |
| 847 | |
| 848 | do { |
| 849 | /* Framepointer style */ |
| 850 | if (!strncmp(name, "fp", sizeof("fp"))) { |
| 851 | if (!strtok_r(NULL, ",", &saveptr)) { |
| 852 | rec->opts.call_graph = CALLCHAIN_FP; |
| 853 | ret = 0; |
| 854 | } else |
| 855 | pr_err("callchain: No more arguments " |
| 856 | "needed for -g fp\n"); |
| 857 | break; |
| 858 | |
Namhyung Kim | 95485b1 | 2012-09-28 18:32:00 +0900 | [diff] [blame] | 859 | #ifdef LIBUNWIND_SUPPORT |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 860 | /* Dwarf style */ |
| 861 | } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { |
Arnaldo Carvalho de Melo | 61eaa3b | 2012-10-01 15:20:58 -0300 | [diff] [blame^] | 862 | const unsigned long default_stack_dump_size = 8192; |
| 863 | |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 864 | ret = 0; |
| 865 | rec->opts.call_graph = CALLCHAIN_DWARF; |
| 866 | rec->opts.stack_dump_size = default_stack_dump_size; |
| 867 | |
| 868 | tok = strtok_r(NULL, ",", &saveptr); |
| 869 | if (tok) { |
| 870 | unsigned long size = 0; |
| 871 | |
| 872 | ret = get_stack_size(tok, &size); |
| 873 | rec->opts.stack_dump_size = size; |
| 874 | } |
| 875 | |
| 876 | if (!ret) |
| 877 | pr_debug("callchain: stack dump size %d\n", |
| 878 | rec->opts.stack_dump_size); |
Namhyung Kim | 95485b1 | 2012-09-28 18:32:00 +0900 | [diff] [blame] | 879 | #endif /* LIBUNWIND_SUPPORT */ |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 880 | } else { |
| 881 | pr_err("callchain: Unknown -g option " |
| 882 | "value: %s\n", arg); |
| 883 | break; |
| 884 | } |
| 885 | |
| 886 | } while (0); |
| 887 | |
| 888 | free(buf); |
| 889 | |
| 890 | if (!ret) |
| 891 | pr_debug("callchain: type %d\n", rec->opts.call_graph); |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 896 | static const char * const record_usage[] = { |
Mike Galbraith | 9e096753 | 2009-05-28 16:25:34 +0200 | [diff] [blame] | 897 | "perf record [<options>] [<command>]", |
| 898 | "perf record [<options>] -- <command> [<options>]", |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 899 | NULL |
| 900 | }; |
| 901 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 902 | /* |
| 903 | * XXX Ideally would be local to cmd_record() and passed to a perf_record__new |
| 904 | * because we need to have access to it in perf_record__exit, that is called |
| 905 | * after cmd_record() exits, but since record_options need to be accessible to |
| 906 | * builtin-script, leave it here. |
| 907 | * |
| 908 | * At least we don't ouch it in all the other functions here directly. |
| 909 | * |
| 910 | * Just say no to tons of global variables, sigh. |
| 911 | */ |
| 912 | static struct perf_record record = { |
| 913 | .opts = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 914 | .mmap_pages = UINT_MAX, |
| 915 | .user_freq = UINT_MAX, |
| 916 | .user_interval = ULLONG_MAX, |
Arnaldo Carvalho de Melo | 447a601 | 2012-05-22 13:14:18 -0300 | [diff] [blame] | 917 | .freq = 4000, |
Namhyung Kim | d1cb9fc | 2012-05-16 18:45:49 +0900 | [diff] [blame] | 918 | .target = { |
| 919 | .uses_mmap = true, |
| 920 | }, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 921 | }, |
| 922 | .write_mode = WRITE_FORCE, |
| 923 | .file_new = true, |
| 924 | }; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 925 | |
Arnaldo Carvalho de Melo | 61eaa3b | 2012-10-01 15:20:58 -0300 | [diff] [blame^] | 926 | #define CALLCHAIN_HELP "do call-graph (stack chain/backtrace) recording: " |
| 927 | |
| 928 | #ifdef LIBUNWIND_SUPPORT |
| 929 | static const char callchain_help[] = CALLCHAIN_HELP "[fp] dwarf"; |
| 930 | #else |
| 931 | static const char callchain_help[] = CALLCHAIN_HELP "[fp]"; |
| 932 | #endif |
| 933 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 934 | /* |
| 935 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing |
| 936 | * with it and switch to use the library functions in perf_evlist that came |
| 937 | * from builtin-record.c, i.e. use perf_record_opts, |
| 938 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
| 939 | * using pipes, etc. |
| 940 | */ |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 941 | const struct option record_options[] = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 942 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 943 | "event selector. use 'perf list' to list available events", |
Jiri Olsa | f120f9d | 2011-07-14 11:25:32 +0200 | [diff] [blame] | 944 | parse_events_option), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 945 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 946 | "event filter", parse_filter), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 947 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 948 | "record events on existing process id"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 949 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 950 | "record events on existing thread id"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 951 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 952 | "collect data with this RT SCHED_FIFO priority"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 953 | OPT_BOOLEAN('D', "no-delay", &record.opts.no_delay, |
Kirill Smelkov | acac03f | 2011-01-12 17:59:36 +0300 | [diff] [blame] | 954 | "collect data without buffering"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 955 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
Frederic Weisbecker | daac07b | 2009-08-13 10:27:19 +0200 | [diff] [blame] | 956 | "collect raw sample records from all opened counters"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 957 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 958 | "system-wide collection from all CPUs"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 959 | OPT_BOOLEAN('A', "append", &record.append_file, |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 960 | "append to the output file to do incremental profiling"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 961 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 962 | "list of cpus to monitor"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 963 | OPT_BOOLEAN('f', "force", &record.force, |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 964 | "overwrite existing data file (deprecated)"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 965 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
| 966 | OPT_STRING('o', "output", &record.output_name, "file", |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 967 | "output file name"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 968 | OPT_BOOLEAN('i', "no-inherit", &record.opts.no_inherit, |
Stephane Eranian | 2e6cdf9 | 2010-05-12 10:40:01 +0200 | [diff] [blame] | 969 | "child tasks do not inherit counters"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 970 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
| 971 | OPT_UINTEGER('m', "mmap-pages", &record.opts.mmap_pages, |
Arnaldo Carvalho de Melo | 01c2d99 | 2011-11-09 09:16:26 -0200 | [diff] [blame] | 972 | "number of mmap data pages"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 973 | OPT_BOOLEAN(0, "group", &record.opts.group, |
Lin Ming | 43bece7 | 2011-08-17 18:42:07 +0800 | [diff] [blame] | 974 | "put the counters into a counter group"), |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 975 | OPT_CALLBACK_DEFAULT('g', "call-graph", &record, "mode[,dump_size]", |
| 976 | callchain_help, &parse_callchain_opt, |
| 977 | "fp"), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 978 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 979 | "be more verbose (show counter open errors, etc)"), |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 980 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 981 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 982 | "per thread counts"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 983 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, |
Anton Blanchard | 4bba828 | 2009-07-16 15:44:29 +0200 | [diff] [blame] | 984 | "Sample addresses"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 985 | OPT_BOOLEAN('T', "timestamp", &record.opts.sample_time, "Sample timestamps"), |
Andrew Vagin | 3e76ac7 | 2011-12-20 17:32:45 +0300 | [diff] [blame] | 986 | OPT_BOOLEAN('P', "period", &record.opts.period, "Sample period"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 987 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 988 | "don't sample"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 989 | OPT_BOOLEAN('N', "no-buildid-cache", &record.no_buildid_cache, |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 990 | "do not update the buildid cache"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 991 | OPT_BOOLEAN('B', "no-buildid", &record.no_buildid, |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 992 | "do not collect buildids in perf.data"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 993 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 994 | "monitor event in cgroup name only", |
| 995 | parse_cgroups), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 996 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
| 997 | "user to profile"), |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 998 | |
| 999 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, |
| 1000 | "branch any", "sample any taken branches", |
| 1001 | parse_branch_stack), |
| 1002 | |
| 1003 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, |
| 1004 | "branch filter mask", "branch stack filter modes", |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 1005 | parse_branch_stack), |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1006 | OPT_END() |
| 1007 | }; |
| 1008 | |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 1009 | int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused) |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1010 | { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 1011 | int err = -ENOMEM; |
| 1012 | struct perf_evsel *pos; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1013 | struct perf_evlist *evsel_list; |
| 1014 | struct perf_record *rec = &record; |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1015 | char errbuf[BUFSIZ]; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1016 | |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 1017 | evsel_list = perf_evlist__new(NULL, NULL); |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 1018 | if (evsel_list == NULL) |
| 1019 | return -ENOMEM; |
| 1020 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1021 | rec->evlist = evsel_list; |
| 1022 | |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 1023 | argc = parse_options(argc, argv, record_options, record_usage, |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1024 | PARSE_OPT_STOP_AT_NON_OPTION); |
Namhyung Kim | d67356e | 2012-05-07 14:09:03 +0900 | [diff] [blame] | 1025 | if (!argc && perf_target__none(&rec->opts.target)) |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 1026 | usage_with_options(record_usage, record_options); |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1027 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1028 | if (rec->force && rec->append_file) { |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 1029 | ui__error("Can't overwrite and append at the same time." |
| 1030 | " You need to choose between -f and -A"); |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 1031 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1032 | } else if (rec->append_file) { |
| 1033 | rec->write_mode = WRITE_APPEND; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 1034 | } else { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1035 | rec->write_mode = WRITE_FORCE; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 1036 | } |
| 1037 | |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1038 | if (nr_cgroups && !rec->opts.target.system_wide) { |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 1039 | ui__error("cgroup monitoring only available in" |
| 1040 | " system-wide mode\n"); |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 1041 | usage_with_options(record_usage, record_options); |
| 1042 | } |
| 1043 | |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1044 | symbol__init(); |
Arnaldo Carvalho de Melo | baa2f6c | 2010-11-26 19:39:15 -0200 | [diff] [blame] | 1045 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1046 | if (symbol_conf.kptr_restrict) |
Arnaldo Carvalho de Melo | 646aaea | 2011-05-27 11:00:41 -0300 | [diff] [blame] | 1047 | pr_warning( |
| 1048 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" |
| 1049 | "check /proc/sys/kernel/kptr_restrict.\n\n" |
| 1050 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" |
| 1051 | "file is not found in the buildid cache or in the vmlinux path.\n\n" |
| 1052 | "Samples in kernel modules won't be resolved at all.\n\n" |
| 1053 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" |
| 1054 | "even with a suitable vmlinux or kallsyms file.\n\n"); |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1055 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1056 | if (rec->no_buildid_cache || rec->no_buildid) |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 1057 | disable_buildid_cache(); |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1058 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 1059 | if (evsel_list->nr_entries == 0 && |
| 1060 | perf_evlist__add_default(evsel_list) < 0) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 1061 | pr_err("Not enough memory for event selector list\n"); |
| 1062 | goto out_symbol_exit; |
Peter Zijlstra | bbd36e5 | 2009-06-11 23:11:50 +0200 | [diff] [blame] | 1063 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1064 | |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1065 | err = perf_target__validate(&rec->opts.target); |
| 1066 | if (err) { |
| 1067 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
| 1068 | ui__warning("%s", errbuf); |
| 1069 | } |
Namhyung Kim | 4bd0f2d | 2012-04-26 14:15:18 +0900 | [diff] [blame] | 1070 | |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1071 | err = perf_target__parse_uid(&rec->opts.target); |
| 1072 | if (err) { |
| 1073 | int saved_errno = errno; |
| 1074 | |
| 1075 | perf_target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 1076 | ui__error("%s", errbuf); |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1077 | |
| 1078 | err = -saved_errno; |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 1079 | goto out_free_fd; |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1080 | } |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 1081 | |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1082 | err = -ENOMEM; |
Namhyung Kim | b809ac1 | 2012-04-26 14:15:19 +0900 | [diff] [blame] | 1083 | if (perf_evlist__create_maps(evsel_list, &rec->opts.target) < 0) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 1084 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 1085 | |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 1086 | list_for_each_entry(pos, &evsel_list->entries, node) { |
Arnaldo Carvalho de Melo | 7289f83 | 2012-06-12 12:34:58 -0300 | [diff] [blame] | 1087 | if (perf_header__push_event(pos->attr.config, perf_evsel__name(pos))) |
Arnaldo Carvalho de Melo | ad7f4e3 | 2011-01-17 18:28:13 -0200 | [diff] [blame] | 1088 | goto out_free_fd; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 1089 | } |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 1090 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1091 | if (rec->opts.user_interval != ULLONG_MAX) |
| 1092 | rec->opts.default_interval = rec->opts.user_interval; |
| 1093 | if (rec->opts.user_freq != UINT_MAX) |
| 1094 | rec->opts.freq = rec->opts.user_freq; |
Frederic Weisbecker | f921281 | 2010-04-14 22:09:02 +0200 | [diff] [blame] | 1095 | |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 1096 | /* |
| 1097 | * User specified count overrides default frequency. |
| 1098 | */ |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1099 | if (rec->opts.default_interval) |
| 1100 | rec->opts.freq = 0; |
| 1101 | else if (rec->opts.freq) { |
| 1102 | rec->opts.default_interval = rec->opts.freq; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 1103 | } else { |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 1104 | ui__error("frequency and count are zero, aborting\n"); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1105 | err = -EINVAL; |
Arnaldo Carvalho de Melo | 5c58104 | 2011-01-11 22:30:02 -0200 | [diff] [blame] | 1106 | goto out_free_fd; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 1107 | } |
| 1108 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1109 | err = __cmd_record(&record, argc, argv); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1110 | out_free_fd: |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 1111 | perf_evlist__delete_maps(evsel_list); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 1112 | out_symbol_exit: |
| 1113 | symbol__exit(); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1114 | return err; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1115 | } |