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 | */ |
Ingo Molnar | 16f762a | 2009-05-27 09:10:38 +0200 | [diff] [blame] | 8 | #include "builtin.h" |
Ingo Molnar | bf9e187 | 2009-06-02 23:37:05 +0200 | [diff] [blame] | 9 | |
| 10 | #include "perf.h" |
| 11 | |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 12 | #include "util/build-id.h" |
Thomas Gleixner | 6eda583 | 2009-05-01 18:29:57 +0200 | [diff] [blame] | 13 | #include "util/util.h" |
Josh Poimboeuf | 4b6ab94 | 2015-12-15 09:39:39 -0600 | [diff] [blame] | 14 | #include <subcmd/parse-options.h> |
Ingo Molnar | 8ad8db3 | 2009-05-26 11:10:09 +0200 | [diff] [blame] | 15 | #include "util/parse-events.h" |
Taeung Song | 41840d2 | 2016-06-23 17:55:17 +0900 | [diff] [blame] | 16 | #include "util/config.h" |
Thomas Gleixner | 6eda583 | 2009-05-01 18:29:57 +0200 | [diff] [blame] | 17 | |
Arnaldo Carvalho de Melo | 8f651ea | 2014-10-09 16:12:24 -0300 | [diff] [blame] | 18 | #include "util/callchain.h" |
Arnaldo Carvalho de Melo | f14d570 | 2014-10-17 12:17:40 -0300 | [diff] [blame] | 19 | #include "util/cgroup.h" |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 20 | #include "util/header.h" |
Frederic Weisbecker | 66e274f | 2009-08-12 11:07:25 +0200 | [diff] [blame] | 21 | #include "util/event.h" |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 22 | #include "util/evlist.h" |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 23 | #include "util/evsel.h" |
Frederic Weisbecker | 8f28827 | 2009-08-16 22:05:48 +0200 | [diff] [blame] | 24 | #include "util/debug.h" |
Mathieu Poirier | 5d8bb1e | 2016-09-16 09:50:03 -0600 | [diff] [blame] | 25 | #include "util/drv_configs.h" |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 26 | #include "util/session.h" |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 27 | #include "util/tool.h" |
Arnaldo Carvalho de Melo | 8d06367 | 2009-11-04 18:50:43 -0200 | [diff] [blame] | 28 | #include "util/symbol.h" |
Paul Mackerras | a12b51c | 2010-03-10 20:36:09 +1100 | [diff] [blame] | 29 | #include "util/cpumap.h" |
Arnaldo Carvalho de Melo | fd78260 | 2011-01-18 15:15:24 -0200 | [diff] [blame] | 30 | #include "util/thread_map.h" |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 31 | #include "util/data.h" |
Stephane Eranian | bcc84ec | 2015-08-31 18:41:12 +0200 | [diff] [blame] | 32 | #include "util/perf_regs.h" |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 33 | #include "util/auxtrace.h" |
Adrian Hunter | 46bc29b | 2016-03-08 10:38:44 +0200 | [diff] [blame] | 34 | #include "util/tsc.h" |
Andi Kleen | f00898f | 2015-05-27 10:51:51 -0700 | [diff] [blame] | 35 | #include "util/parse-branch-options.h" |
Stephane Eranian | bcc84ec | 2015-08-31 18:41:12 +0200 | [diff] [blame] | 36 | #include "util/parse-regs-options.h" |
Wang Nan | 71dc2326 | 2015-10-14 12:41:19 +0000 | [diff] [blame] | 37 | #include "util/llvm-utils.h" |
Wang Nan | 8690a2a | 2016-02-22 09:10:32 +0000 | [diff] [blame] | 38 | #include "util/bpf-loader.h" |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 39 | #include "util/trigger.h" |
Wang Nan | a074865 | 2016-11-26 07:03:28 +0000 | [diff] [blame] | 40 | #include "util/perf-hooks.h" |
Arnaldo Carvalho de Melo | 58db1d6 | 2017-04-19 16:05:56 -0300 | [diff] [blame^] | 41 | #include "util/units.h" |
Wang Nan | d8871ea | 2016-02-26 09:32:06 +0000 | [diff] [blame] | 42 | #include "asm/bug.h" |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 43 | |
Arnaldo Carvalho de Melo | a43783a | 2017-04-18 10:46:11 -0300 | [diff] [blame] | 44 | #include <errno.h> |
Arnaldo Carvalho de Melo | fd20e81 | 2017-04-17 15:23:08 -0300 | [diff] [blame] | 45 | #include <inttypes.h> |
Peter Zijlstra | 97124d5 | 2009-06-02 15:52:24 +0200 | [diff] [blame] | 46 | #include <unistd.h> |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 47 | #include <sched.h> |
Arnaldo Carvalho de Melo | 9607ad3 | 2017-04-19 15:49:18 -0300 | [diff] [blame] | 48 | #include <signal.h> |
Arnaldo Carvalho de Melo | a41794c | 2010-05-18 18:29:23 -0300 | [diff] [blame] | 49 | #include <sys/mman.h> |
Wang Nan | 2d11c65 | 2016-05-23 07:13:39 +0000 | [diff] [blame] | 50 | #include <asm/bug.h> |
Arnaldo Carvalho de Melo | 0693e68 | 2016-08-08 15:05:46 -0300 | [diff] [blame] | 51 | #include <linux/time64.h> |
Bernhard Rosenkraenzer | 78da39f | 2012-10-08 09:43:26 +0300 | [diff] [blame] | 52 | |
Jiri Olsa | 1b43b70 | 2017-01-09 10:51:56 +0100 | [diff] [blame] | 53 | struct switch_output { |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 54 | bool enabled; |
Jiri Olsa | 1b43b70 | 2017-01-09 10:51:56 +0100 | [diff] [blame] | 55 | bool signal; |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 56 | unsigned long size; |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 57 | unsigned long time; |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 58 | const char *str; |
| 59 | bool set; |
Jiri Olsa | 1b43b70 | 2017-01-09 10:51:56 +0100 | [diff] [blame] | 60 | }; |
| 61 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 62 | struct record { |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 63 | struct perf_tool tool; |
Arnaldo Carvalho de Melo | b400679 | 2013-12-19 14:43:45 -0300 | [diff] [blame] | 64 | struct record_opts opts; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 65 | u64 bytes_written; |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 66 | struct perf_data_file file; |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 67 | struct auxtrace_record *itr; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 68 | struct perf_evlist *evlist; |
| 69 | struct perf_session *session; |
| 70 | const char *progname; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 71 | int realtime_prio; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 72 | bool no_buildid; |
Wang Nan | d2db9a9 | 2016-01-25 09:56:19 +0000 | [diff] [blame] | 73 | bool no_buildid_set; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 74 | bool no_buildid_cache; |
Wang Nan | d2db9a9 | 2016-01-25 09:56:19 +0000 | [diff] [blame] | 75 | bool no_buildid_cache_set; |
Namhyung Kim | 6156681 | 2016-01-11 22:37:09 +0900 | [diff] [blame] | 76 | bool buildid_all; |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 77 | bool timestamp_filename; |
Jiri Olsa | 1b43b70 | 2017-01-09 10:51:56 +0100 | [diff] [blame] | 78 | struct switch_output switch_output; |
Yang Shi | 9f06519 | 2015-09-29 14:49:43 -0700 | [diff] [blame] | 79 | unsigned long long samples; |
Arnaldo Carvalho de Melo | 0f82ebc | 2011-11-08 14:41:57 -0200 | [diff] [blame] | 80 | }; |
Ingo Molnar | a21ca2c | 2009-06-06 09:58:57 +0200 | [diff] [blame] | 81 | |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 82 | static volatile int auxtrace_record__snapshot_started; |
| 83 | static DEFINE_TRIGGER(auxtrace_snapshot_trigger); |
| 84 | static DEFINE_TRIGGER(switch_output_trigger); |
| 85 | |
| 86 | static bool switch_output_signal(struct record *rec) |
| 87 | { |
| 88 | return rec->switch_output.signal && |
| 89 | trigger_is_ready(&switch_output_trigger); |
| 90 | } |
| 91 | |
| 92 | static bool switch_output_size(struct record *rec) |
| 93 | { |
| 94 | return rec->switch_output.size && |
| 95 | trigger_is_ready(&switch_output_trigger) && |
| 96 | (rec->bytes_written >= rec->switch_output.size); |
| 97 | } |
| 98 | |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 99 | static bool switch_output_time(struct record *rec) |
| 100 | { |
| 101 | return rec->switch_output.time && |
| 102 | trigger_is_ready(&switch_output_trigger); |
| 103 | } |
| 104 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 105 | static int record__write(struct record *rec, void *bf, size_t size) |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 106 | { |
Arnaldo Carvalho de Melo | cf8b2e6 | 2013-12-19 14:26:26 -0300 | [diff] [blame] | 107 | if (perf_data_file__write(rec->session->file, bf, size) < 0) { |
Jiri Olsa | 50a9b86 | 2013-11-22 13:11:24 +0100 | [diff] [blame] | 108 | pr_err("failed to write perf data, error: %m\n"); |
| 109 | return -1; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 110 | } |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 111 | |
Arnaldo Carvalho de Melo | cf8b2e6 | 2013-12-19 14:26:26 -0300 | [diff] [blame] | 112 | rec->bytes_written += size; |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 113 | |
| 114 | if (switch_output_size(rec)) |
| 115 | trigger_hit(&switch_output_trigger); |
| 116 | |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 117 | return 0; |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 118 | } |
| 119 | |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 120 | static int process_synthesized_event(struct perf_tool *tool, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 121 | union perf_event *event, |
Irina Tirdea | 1d037ca | 2012-09-11 01:15:03 +0300 | [diff] [blame] | 122 | struct perf_sample *sample __maybe_unused, |
| 123 | struct machine *machine __maybe_unused) |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 124 | { |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 125 | struct record *rec = container_of(tool, struct record, tool); |
| 126 | return record__write(rec, event, event->header.size); |
Arnaldo Carvalho de Melo | 234fbbf | 2009-10-26 19:23:18 -0200 | [diff] [blame] | 127 | } |
| 128 | |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 129 | static int |
| 130 | backward_rb_find_range(void *buf, int mask, u64 head, u64 *start, u64 *end) |
| 131 | { |
| 132 | struct perf_event_header *pheader; |
| 133 | u64 evt_head = head; |
| 134 | int size = mask + 1; |
| 135 | |
| 136 | pr_debug2("backward_rb_find_range: buf=%p, head=%"PRIx64"\n", buf, head); |
| 137 | pheader = (struct perf_event_header *)(buf + (head & mask)); |
| 138 | *start = head; |
| 139 | while (true) { |
| 140 | if (evt_head - head >= (unsigned int)size) { |
Colin Ian King | 5e30d55 | 2016-08-22 19:30:08 +0100 | [diff] [blame] | 141 | pr_debug("Finished reading backward ring buffer: rewind\n"); |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 142 | if (evt_head - head > (unsigned int)size) |
| 143 | evt_head -= pheader->size; |
| 144 | *end = evt_head; |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | pheader = (struct perf_event_header *)(buf + (evt_head & mask)); |
| 149 | |
| 150 | if (pheader->size == 0) { |
Colin Ian King | 5e30d55 | 2016-08-22 19:30:08 +0100 | [diff] [blame] | 151 | pr_debug("Finished reading backward ring buffer: get start\n"); |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 152 | *end = evt_head; |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | evt_head += pheader->size; |
| 157 | pr_debug3("move evt_head: %"PRIx64"\n", evt_head); |
| 158 | } |
| 159 | WARN_ONCE(1, "Shouldn't get here\n"); |
| 160 | return -1; |
| 161 | } |
| 162 | |
| 163 | static int |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 164 | rb_find_range(void *data, int mask, u64 head, u64 old, |
| 165 | u64 *start, u64 *end, bool backward) |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 166 | { |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 167 | if (!backward) { |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 168 | *start = old; |
| 169 | *end = head; |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | return backward_rb_find_range(data, mask, head, start, end); |
| 174 | } |
| 175 | |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 176 | static int |
| 177 | record__mmap_read(struct record *rec, struct perf_mmap *md, |
| 178 | bool overwrite, bool backward) |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 179 | { |
David Ahern | 7b8283b5 | 2015-04-07 09:20:37 -0600 | [diff] [blame] | 180 | u64 head = perf_mmap__read_head(md); |
| 181 | u64 old = md->prev; |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 182 | u64 end = head, start = old; |
Jiri Olsa | 918512b | 2013-09-12 18:39:35 +0200 | [diff] [blame] | 183 | unsigned char *data = md->base + page_size; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 184 | unsigned long size; |
| 185 | void *buf; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 186 | int rc = 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 187 | |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 188 | if (rb_find_range(data, md->mask, head, |
| 189 | old, &start, &end, backward)) |
Wang Nan | 3a62a7b | 2016-05-23 07:13:41 +0000 | [diff] [blame] | 190 | return -1; |
| 191 | |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 192 | if (start == end) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 193 | return 0; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 194 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 195 | rec->samples++; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 196 | |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 197 | size = end - start; |
Wang Nan | 2d11c65 | 2016-05-23 07:13:39 +0000 | [diff] [blame] | 198 | if (size > (unsigned long)(md->mask) + 1) { |
| 199 | WARN_ONCE(1, "failed to keep up with mmap data. (warn only once)\n"); |
| 200 | |
| 201 | md->prev = head; |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 202 | perf_mmap__consume(md, overwrite || backward); |
Wang Nan | 2d11c65 | 2016-05-23 07:13:39 +0000 | [diff] [blame] | 203 | return 0; |
| 204 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 205 | |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 206 | if ((start & md->mask) + size != (end & md->mask)) { |
| 207 | buf = &data[start & md->mask]; |
| 208 | size = md->mask + 1 - (start & md->mask); |
| 209 | start += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 210 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 211 | if (record__write(rec, buf, size) < 0) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 212 | rc = -1; |
| 213 | goto out; |
| 214 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 215 | } |
| 216 | |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 217 | buf = &data[start & md->mask]; |
| 218 | size = end - start; |
| 219 | start += size; |
Ingo Molnar | 021e9f4 | 2009-06-03 19:27:19 +0200 | [diff] [blame] | 220 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 221 | if (record__write(rec, buf, size) < 0) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 222 | rc = -1; |
| 223 | goto out; |
| 224 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 225 | |
Wang Nan | 09fa4f4 | 2016-05-23 07:13:40 +0000 | [diff] [blame] | 226 | md->prev = head; |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 227 | perf_mmap__consume(md, overwrite || backward); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 228 | out: |
| 229 | return rc; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 230 | } |
| 231 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 232 | static volatile int done; |
| 233 | static volatile int signr = -1; |
| 234 | static volatile int child_finished; |
Wang Nan | c0bdc1c | 2016-04-13 08:21:06 +0000 | [diff] [blame] | 235 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 236 | static void sig_handler(int sig) |
| 237 | { |
| 238 | if (sig == SIGCHLD) |
| 239 | child_finished = 1; |
| 240 | else |
| 241 | signr = sig; |
| 242 | |
| 243 | done = 1; |
| 244 | } |
| 245 | |
Wang Nan | a074865 | 2016-11-26 07:03:28 +0000 | [diff] [blame] | 246 | static void sigsegv_handler(int sig) |
| 247 | { |
| 248 | perf_hooks__recover(); |
| 249 | sighandler_dump_stack(sig); |
| 250 | } |
| 251 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 252 | static void record__sig_exit(void) |
| 253 | { |
| 254 | if (signr == -1) |
| 255 | return; |
| 256 | |
| 257 | signal(signr, SIG_DFL); |
| 258 | raise(signr); |
| 259 | } |
| 260 | |
Adrian Hunter | e31f0d0 | 2015-04-30 17:37:27 +0300 | [diff] [blame] | 261 | #ifdef HAVE_AUXTRACE_SUPPORT |
| 262 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 263 | static int record__process_auxtrace(struct perf_tool *tool, |
| 264 | union perf_event *event, void *data1, |
| 265 | size_t len1, void *data2, size_t len2) |
| 266 | { |
| 267 | struct record *rec = container_of(tool, struct record, tool); |
Adrian Hunter | 99fa298 | 2015-04-30 17:37:25 +0300 | [diff] [blame] | 268 | struct perf_data_file *file = &rec->file; |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 269 | size_t padding; |
| 270 | u8 pad[8] = {0}; |
| 271 | |
Adrian Hunter | 99fa298 | 2015-04-30 17:37:25 +0300 | [diff] [blame] | 272 | if (!perf_data_file__is_pipe(file)) { |
| 273 | off_t file_offset; |
| 274 | int fd = perf_data_file__fd(file); |
| 275 | int err; |
| 276 | |
| 277 | file_offset = lseek(fd, 0, SEEK_CUR); |
| 278 | if (file_offset == -1) |
| 279 | return -1; |
| 280 | err = auxtrace_index__auxtrace_event(&rec->session->auxtrace_index, |
| 281 | event, file_offset); |
| 282 | if (err) |
| 283 | return err; |
| 284 | } |
| 285 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 286 | /* event.auxtrace.size includes padding, see __auxtrace_mmap__read() */ |
| 287 | padding = (len1 + len2) & 7; |
| 288 | if (padding) |
| 289 | padding = 8 - padding; |
| 290 | |
| 291 | record__write(rec, event, event->header.size); |
| 292 | record__write(rec, data1, len1); |
| 293 | if (len2) |
| 294 | record__write(rec, data2, len2); |
| 295 | record__write(rec, &pad, padding); |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static int record__auxtrace_mmap_read(struct record *rec, |
| 301 | struct auxtrace_mmap *mm) |
| 302 | { |
| 303 | int ret; |
| 304 | |
| 305 | ret = auxtrace_mmap__read(mm, rec->itr, &rec->tool, |
| 306 | record__process_auxtrace); |
| 307 | if (ret < 0) |
| 308 | return ret; |
| 309 | |
| 310 | if (ret) |
| 311 | rec->samples++; |
| 312 | |
| 313 | return 0; |
| 314 | } |
| 315 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 316 | static int record__auxtrace_mmap_read_snapshot(struct record *rec, |
| 317 | struct auxtrace_mmap *mm) |
| 318 | { |
| 319 | int ret; |
| 320 | |
| 321 | ret = auxtrace_mmap__read_snapshot(mm, rec->itr, &rec->tool, |
| 322 | record__process_auxtrace, |
| 323 | rec->opts.auxtrace_snapshot_size); |
| 324 | if (ret < 0) |
| 325 | return ret; |
| 326 | |
| 327 | if (ret) |
| 328 | rec->samples++; |
| 329 | |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static int record__auxtrace_read_snapshot_all(struct record *rec) |
| 334 | { |
| 335 | int i; |
| 336 | int rc = 0; |
| 337 | |
| 338 | for (i = 0; i < rec->evlist->nr_mmaps; i++) { |
| 339 | struct auxtrace_mmap *mm = |
| 340 | &rec->evlist->mmap[i].auxtrace_mmap; |
| 341 | |
| 342 | if (!mm->base) |
| 343 | continue; |
| 344 | |
| 345 | if (record__auxtrace_mmap_read_snapshot(rec, mm) != 0) { |
| 346 | rc = -1; |
| 347 | goto out; |
| 348 | } |
| 349 | } |
| 350 | out: |
| 351 | return rc; |
| 352 | } |
| 353 | |
| 354 | static void record__read_auxtrace_snapshot(struct record *rec) |
| 355 | { |
| 356 | pr_debug("Recording AUX area tracing snapshot\n"); |
| 357 | if (record__auxtrace_read_snapshot_all(rec) < 0) { |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 358 | trigger_error(&auxtrace_snapshot_trigger); |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 359 | } else { |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 360 | if (auxtrace_record__snapshot_finish(rec->itr)) |
| 361 | trigger_error(&auxtrace_snapshot_trigger); |
| 362 | else |
| 363 | trigger_ready(&auxtrace_snapshot_trigger); |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 364 | } |
| 365 | } |
| 366 | |
Adrian Hunter | e31f0d0 | 2015-04-30 17:37:27 +0300 | [diff] [blame] | 367 | #else |
| 368 | |
| 369 | static inline |
| 370 | int record__auxtrace_mmap_read(struct record *rec __maybe_unused, |
| 371 | struct auxtrace_mmap *mm __maybe_unused) |
| 372 | { |
| 373 | return 0; |
| 374 | } |
| 375 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 376 | static inline |
| 377 | void record__read_auxtrace_snapshot(struct record *rec __maybe_unused) |
| 378 | { |
| 379 | } |
| 380 | |
| 381 | static inline |
| 382 | int auxtrace_record__snapshot_start(struct auxtrace_record *itr __maybe_unused) |
| 383 | { |
| 384 | return 0; |
| 385 | } |
| 386 | |
Adrian Hunter | e31f0d0 | 2015-04-30 17:37:27 +0300 | [diff] [blame] | 387 | #endif |
| 388 | |
Wang Nan | cda57a8 | 2016-06-27 10:24:03 +0000 | [diff] [blame] | 389 | static int record__mmap_evlist(struct record *rec, |
| 390 | struct perf_evlist *evlist) |
| 391 | { |
| 392 | struct record_opts *opts = &rec->opts; |
| 393 | char msg[512]; |
| 394 | |
| 395 | if (perf_evlist__mmap_ex(evlist, opts->mmap_pages, false, |
| 396 | opts->auxtrace_mmap_pages, |
| 397 | opts->auxtrace_snapshot_mode) < 0) { |
| 398 | if (errno == EPERM) { |
| 399 | pr_err("Permission error mapping pages.\n" |
| 400 | "Consider increasing " |
| 401 | "/proc/sys/kernel/perf_event_mlock_kb,\n" |
| 402 | "or try again with a smaller value of -m/--mmap_pages.\n" |
| 403 | "(current value: %u,%u)\n", |
| 404 | opts->mmap_pages, opts->auxtrace_mmap_pages); |
| 405 | return -errno; |
| 406 | } else { |
| 407 | pr_err("failed to mmap with %d (%s)\n", errno, |
Arnaldo Carvalho de Melo | c8b5f2c | 2016-07-06 11:56:20 -0300 | [diff] [blame] | 408 | str_error_r(errno, msg, sizeof(msg))); |
Wang Nan | cda57a8 | 2016-06-27 10:24:03 +0000 | [diff] [blame] | 409 | if (errno) |
| 410 | return -errno; |
| 411 | else |
| 412 | return -EINVAL; |
| 413 | } |
| 414 | } |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | static int record__mmap(struct record *rec) |
| 419 | { |
| 420 | return record__mmap_evlist(rec, rec->evlist); |
| 421 | } |
| 422 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 423 | static int record__open(struct record *rec) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 424 | { |
Arnaldo Carvalho de Melo | d6195a6 | 2017-02-13 16:45:24 -0300 | [diff] [blame] | 425 | char msg[BUFSIZ]; |
Jiri Olsa | 6a4bb04 | 2012-08-08 12:22:36 +0200 | [diff] [blame] | 426 | struct perf_evsel *pos; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 427 | struct perf_evlist *evlist = rec->evlist; |
| 428 | struct perf_session *session = rec->session; |
Arnaldo Carvalho de Melo | b400679 | 2013-12-19 14:43:45 -0300 | [diff] [blame] | 429 | struct record_opts *opts = &rec->opts; |
Mathieu Poirier | 5d8bb1e | 2016-09-16 09:50:03 -0600 | [diff] [blame] | 430 | struct perf_evsel_config_term *err_term; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 431 | int rc = 0; |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 432 | |
Arnaldo Carvalho de Melo | e68ae9c | 2016-04-11 18:15:29 -0300 | [diff] [blame] | 433 | perf_evlist__config(evlist, opts, &callchain_param); |
Jiri Olsa | cac2142 | 2012-11-12 18:34:00 +0100 | [diff] [blame] | 434 | |
Arnaldo Carvalho de Melo | e5cadb9 | 2016-06-23 11:26:15 -0300 | [diff] [blame] | 435 | evlist__for_each_entry(evlist, pos) { |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 436 | try_again: |
Kan Liang | d988d5e | 2015-08-21 02:23:14 -0400 | [diff] [blame] | 437 | if (perf_evsel__open(pos, pos->cpus, pos->threads) < 0) { |
Arnaldo Carvalho de Melo | 56e52e8 | 2012-12-13 15:10:58 -0300 | [diff] [blame] | 438 | if (perf_evsel__fallback(pos, errno, msg, sizeof(msg))) { |
Namhyung Kim | bb963e1 | 2017-02-17 17:17:38 +0900 | [diff] [blame] | 439 | if (verbose > 0) |
Arnaldo Carvalho de Melo | c0a5434 | 2012-12-13 14:16:30 -0300 | [diff] [blame] | 440 | ui__warning("%s\n", msg); |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 441 | goto try_again; |
| 442 | } |
David Ahern | ca6a425 | 2011-03-25 13:11:11 -0600 | [diff] [blame] | 443 | |
Arnaldo Carvalho de Melo | 56e52e8 | 2012-12-13 15:10:58 -0300 | [diff] [blame] | 444 | rc = -errno; |
| 445 | perf_evsel__open_strerror(pos, &opts->target, |
| 446 | errno, msg, sizeof(msg)); |
| 447 | ui__error("%s\n", msg); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 448 | goto out; |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 449 | } |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 450 | } |
Arnaldo Carvalho de Melo | a43d3f0 | 2010-12-25 12:12:25 -0200 | [diff] [blame] | 451 | |
Arnaldo Carvalho de Melo | 23d4aad | 2015-03-24 19:23:47 -0300 | [diff] [blame] | 452 | if (perf_evlist__apply_filters(evlist, &pos)) { |
| 453 | error("failed to set filter \"%s\" on event %s with %d (%s)\n", |
| 454 | pos->filter, perf_evsel__name(pos), errno, |
Arnaldo Carvalho de Melo | c8b5f2c | 2016-07-06 11:56:20 -0300 | [diff] [blame] | 455 | str_error_r(errno, msg, sizeof(msg))); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 456 | rc = -1; |
| 457 | goto out; |
Frederic Weisbecker | 0a10247 | 2011-02-26 04:51:54 +0100 | [diff] [blame] | 458 | } |
| 459 | |
Mathieu Poirier | 5d8bb1e | 2016-09-16 09:50:03 -0600 | [diff] [blame] | 460 | if (perf_evlist__apply_drv_configs(evlist, &pos, &err_term)) { |
| 461 | error("failed to set config \"%s\" on event %s with %d (%s)\n", |
| 462 | err_term->val.drv_cfg, perf_evsel__name(pos), errno, |
| 463 | str_error_r(errno, msg, sizeof(msg))); |
| 464 | rc = -1; |
| 465 | goto out; |
| 466 | } |
| 467 | |
Wang Nan | cda57a8 | 2016-06-27 10:24:03 +0000 | [diff] [blame] | 468 | rc = record__mmap(rec); |
| 469 | if (rc) |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 470 | goto out; |
Arnaldo Carvalho de Melo | 0a27d7f | 2011-01-14 15:50:51 -0200 | [diff] [blame] | 471 | |
Jiri Olsa | 563aecb | 2013-06-05 13:35:06 +0200 | [diff] [blame] | 472 | session->evlist = evlist; |
Arnaldo Carvalho de Melo | 7b56cce | 2012-08-01 19:31:00 -0300 | [diff] [blame] | 473 | perf_session__set_id_hdr_size(session); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 474 | out: |
| 475 | return rc; |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 476 | } |
| 477 | |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 478 | static int process_sample_event(struct perf_tool *tool, |
| 479 | union perf_event *event, |
| 480 | struct perf_sample *sample, |
| 481 | struct perf_evsel *evsel, |
| 482 | struct machine *machine) |
| 483 | { |
| 484 | struct record *rec = container_of(tool, struct record, tool); |
| 485 | |
| 486 | rec->samples++; |
| 487 | |
| 488 | return build_id__mark_dso_hit(tool, event, sample, evsel, machine); |
| 489 | } |
| 490 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 491 | static int process_buildids(struct record *rec) |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 492 | { |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 493 | struct perf_data_file *file = &rec->file; |
| 494 | struct perf_session *session = rec->session; |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 495 | |
He Kuang | 457ae94 | 2015-05-28 13:17:30 +0000 | [diff] [blame] | 496 | if (file->size == 0) |
Arnaldo Carvalho de Melo | 9f591fd | 2010-03-11 15:53:11 -0300 | [diff] [blame] | 497 | return 0; |
| 498 | |
Namhyung Kim | 00dc865 | 2014-11-04 10:14:32 +0900 | [diff] [blame] | 499 | /* |
| 500 | * During this process, it'll load kernel map and replace the |
| 501 | * dso->long_name to a real pathname it found. In this case |
| 502 | * we prefer the vmlinux path like |
| 503 | * /lib/modules/3.16.4/build/vmlinux |
| 504 | * |
| 505 | * rather than build-id path (in debug directory). |
| 506 | * $HOME/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 |
| 507 | */ |
| 508 | symbol_conf.ignore_vmlinux_buildid = true; |
| 509 | |
Namhyung Kim | 6156681 | 2016-01-11 22:37:09 +0900 | [diff] [blame] | 510 | /* |
| 511 | * If --buildid-all is given, it marks all DSO regardless of hits, |
| 512 | * so no need to process samples. |
| 513 | */ |
| 514 | if (rec->buildid_all) |
| 515 | rec->tool.sample = NULL; |
| 516 | |
Arnaldo Carvalho de Melo | b7b61cb | 2015-03-03 11:58:45 -0300 | [diff] [blame] | 517 | return perf_session__process_events(session); |
Arnaldo Carvalho de Melo | 6122e4e | 2010-02-03 16:52:05 -0200 | [diff] [blame] | 518 | } |
| 519 | |
Arnaldo Carvalho de Melo | 8115d60 | 2011-01-29 14:01:45 -0200 | [diff] [blame] | 520 | static void perf_event__synthesize_guest_os(struct machine *machine, void *data) |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 521 | { |
| 522 | int err; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 523 | struct perf_tool *tool = data; |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 524 | /* |
| 525 | *As for guest kernel when processing subcommand record&report, |
| 526 | *we arrange module mmap prior to guest kernel mmap and trigger |
| 527 | *a preload dso because default guest module symbols are loaded |
| 528 | *from guest kallsyms instead of /lib/modules/XXX/XXX. This |
| 529 | *method is used to avoid symbol missing when the first addr is |
| 530 | *in module instead of in guest kernel. |
| 531 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 532 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 533 | machine); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 534 | if (err < 0) |
| 535 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 536 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 537 | |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 538 | /* |
| 539 | * We use _stext for guest kernel because guest kernel's /proc/kallsyms |
| 540 | * have no _text sometimes. |
| 541 | */ |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 542 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
Adrian Hunter | 0ae617b | 2014-01-29 16:14:40 +0200 | [diff] [blame] | 543 | machine); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 544 | if (err < 0) |
| 545 | pr_err("Couldn't record guest kernel [%d]'s reference" |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 546 | " relocation symbol.\n", machine->pid); |
Zhang, Yanmin | a1645ce | 2010-04-19 13:32:50 +0800 | [diff] [blame] | 547 | } |
| 548 | |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 549 | static struct perf_event_header finished_round_event = { |
| 550 | .size = sizeof(struct perf_event_header), |
| 551 | .type = PERF_RECORD_FINISHED_ROUND, |
| 552 | }; |
| 553 | |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 554 | static int record__mmap_read_evlist(struct record *rec, struct perf_evlist *evlist, |
| 555 | bool backward) |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 556 | { |
Jiri Olsa | dcabb50 | 2014-07-25 16:56:16 +0200 | [diff] [blame] | 557 | u64 bytes_written = rec->bytes_written; |
Peter Zijlstra | 0e2e63d | 2010-05-20 14:45:26 +0200 | [diff] [blame] | 558 | int i; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 559 | int rc = 0; |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 560 | struct perf_mmap *maps; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 561 | |
Wang Nan | cb21686 | 2016-06-27 10:24:04 +0000 | [diff] [blame] | 562 | if (!evlist) |
| 563 | return 0; |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 564 | |
Wang Nan | b2cb615 | 2016-07-14 08:34:39 +0000 | [diff] [blame] | 565 | maps = backward ? evlist->backward_mmap : evlist->mmap; |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 566 | if (!maps) |
| 567 | return 0; |
Wang Nan | cb21686 | 2016-06-27 10:24:04 +0000 | [diff] [blame] | 568 | |
Wang Nan | 54cc54d | 2016-07-14 08:34:42 +0000 | [diff] [blame] | 569 | if (backward && evlist->bkw_mmap_state != BKW_MMAP_DATA_PENDING) |
| 570 | return 0; |
| 571 | |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 572 | for (i = 0; i < evlist->nr_mmaps; i++) { |
| 573 | struct auxtrace_mmap *mm = &maps[i].auxtrace_mmap; |
| 574 | |
| 575 | if (maps[i].base) { |
| 576 | if (record__mmap_read(rec, &maps[i], |
| 577 | evlist->overwrite, backward) != 0) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 578 | rc = -1; |
| 579 | goto out; |
| 580 | } |
| 581 | } |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 582 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 583 | if (mm->base && !rec->opts.auxtrace_snapshot_mode && |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 584 | record__auxtrace_mmap_read(rec, mm) != 0) { |
| 585 | rc = -1; |
| 586 | goto out; |
| 587 | } |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 588 | } |
| 589 | |
Jiri Olsa | dcabb50 | 2014-07-25 16:56:16 +0200 | [diff] [blame] | 590 | /* |
| 591 | * Mark the round finished in case we wrote |
| 592 | * at least one event. |
| 593 | */ |
| 594 | if (bytes_written != rec->bytes_written) |
| 595 | rc = record__write(rec, &finished_round_event, sizeof(finished_round_event)); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 596 | |
Wang Nan | 54cc54d | 2016-07-14 08:34:42 +0000 | [diff] [blame] | 597 | if (backward) |
| 598 | perf_evlist__toggle_bkw_mmap(evlist, BKW_MMAP_EMPTY); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 599 | out: |
| 600 | return rc; |
Frederic Weisbecker | 9840280 | 2010-05-02 22:05:29 +0200 | [diff] [blame] | 601 | } |
| 602 | |
Wang Nan | cb21686 | 2016-06-27 10:24:04 +0000 | [diff] [blame] | 603 | static int record__mmap_read_all(struct record *rec) |
| 604 | { |
| 605 | int err; |
| 606 | |
Wang Nan | a4ea0ec | 2016-07-14 08:34:36 +0000 | [diff] [blame] | 607 | err = record__mmap_read_evlist(rec, rec->evlist, false); |
Wang Nan | cb21686 | 2016-06-27 10:24:04 +0000 | [diff] [blame] | 608 | if (err) |
| 609 | return err; |
| 610 | |
Wang Nan | 05737464 | 2016-07-14 08:34:43 +0000 | [diff] [blame] | 611 | return record__mmap_read_evlist(rec, rec->evlist, true); |
Wang Nan | cb21686 | 2016-06-27 10:24:04 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 614 | static void record__init_features(struct record *rec) |
David Ahern | 57706ab | 2013-11-06 11:41:34 -0700 | [diff] [blame] | 615 | { |
David Ahern | 57706ab | 2013-11-06 11:41:34 -0700 | [diff] [blame] | 616 | struct perf_session *session = rec->session; |
| 617 | int feat; |
| 618 | |
| 619 | for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
| 620 | perf_header__set_feat(&session->header, feat); |
| 621 | |
| 622 | if (rec->no_buildid) |
| 623 | perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
| 624 | |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 625 | if (!have_tracepoints(&rec->evlist->entries)) |
David Ahern | 57706ab | 2013-11-06 11:41:34 -0700 | [diff] [blame] | 626 | perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
| 627 | |
| 628 | if (!rec->opts.branch_stack) |
| 629 | perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 630 | |
| 631 | if (!rec->opts.full_auxtrace) |
| 632 | perf_header__clear_feat(&session->header, HEADER_AUXTRACE); |
Jiri Olsa | ffa517a | 2015-10-25 15:51:43 +0100 | [diff] [blame] | 633 | |
| 634 | perf_header__clear_feat(&session->header, HEADER_STAT); |
David Ahern | 57706ab | 2013-11-06 11:41:34 -0700 | [diff] [blame] | 635 | } |
| 636 | |
Wang Nan | e1ab48b | 2016-02-26 09:32:10 +0000 | [diff] [blame] | 637 | static void |
| 638 | record__finish_output(struct record *rec) |
| 639 | { |
| 640 | struct perf_data_file *file = &rec->file; |
| 641 | int fd = perf_data_file__fd(file); |
| 642 | |
| 643 | if (file->is_pipe) |
| 644 | return; |
| 645 | |
| 646 | rec->session->header.data_size += rec->bytes_written; |
| 647 | file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR); |
| 648 | |
| 649 | if (!rec->no_buildid) { |
| 650 | process_buildids(rec); |
| 651 | |
| 652 | if (rec->buildid_all) |
| 653 | dsos__hit_all(rec->session); |
| 654 | } |
| 655 | perf_session__write_header(rec->session, rec->evlist, fd, true); |
| 656 | |
| 657 | return; |
| 658 | } |
| 659 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 660 | static int record__synthesize_workload(struct record *rec, bool tail) |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 661 | { |
Arnaldo Carvalho de Melo | 9d6aae7 | 2017-02-14 10:59:04 -0300 | [diff] [blame] | 662 | int err; |
| 663 | struct thread_map *thread_map; |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 664 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 665 | if (rec->opts.tail_synthesize != tail) |
| 666 | return 0; |
| 667 | |
Arnaldo Carvalho de Melo | 9d6aae7 | 2017-02-14 10:59:04 -0300 | [diff] [blame] | 668 | thread_map = thread_map__new_by_tid(rec->evlist->workload.pid); |
| 669 | if (thread_map == NULL) |
| 670 | return -1; |
| 671 | |
| 672 | err = perf_event__synthesize_thread_map(&rec->tool, thread_map, |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 673 | process_synthesized_event, |
| 674 | &rec->session->machines.host, |
| 675 | rec->opts.sample_address, |
| 676 | rec->opts.proc_map_timeout); |
Arnaldo Carvalho de Melo | 9d6aae7 | 2017-02-14 10:59:04 -0300 | [diff] [blame] | 677 | thread_map__put(thread_map); |
| 678 | return err; |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 679 | } |
| 680 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 681 | static int record__synthesize(struct record *rec, bool tail); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 682 | |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 683 | static int |
| 684 | record__switch_output(struct record *rec, bool at_exit) |
| 685 | { |
| 686 | struct perf_data_file *file = &rec->file; |
| 687 | int fd, err; |
| 688 | |
| 689 | /* Same Size: "2015122520103046"*/ |
| 690 | char timestamp[] = "InvalidTimestamp"; |
| 691 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 692 | record__synthesize(rec, true); |
| 693 | if (target__none(&rec->opts.target)) |
| 694 | record__synthesize_workload(rec, true); |
| 695 | |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 696 | rec->samples = 0; |
| 697 | record__finish_output(rec); |
| 698 | err = fetch_current_timestamp(timestamp, sizeof(timestamp)); |
| 699 | if (err) { |
| 700 | pr_err("Failed to get current timestamp\n"); |
| 701 | return -EINVAL; |
| 702 | } |
| 703 | |
| 704 | fd = perf_data_file__switch(file, timestamp, |
| 705 | rec->session->header.data_offset, |
| 706 | at_exit); |
| 707 | if (fd >= 0 && !at_exit) { |
| 708 | rec->bytes_written = 0; |
| 709 | rec->session->header.data_size = 0; |
| 710 | } |
| 711 | |
| 712 | if (!quiet) |
| 713 | fprintf(stderr, "[ perf record: Dump %s.%s ]\n", |
| 714 | file->path, timestamp); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 715 | |
| 716 | /* Output tracking events */ |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 717 | if (!at_exit) { |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 718 | record__synthesize(rec, false); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 719 | |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 720 | /* |
| 721 | * In 'perf record --switch-output' without -a, |
| 722 | * record__synthesize() in record__switch_output() won't |
| 723 | * generate tracking events because there's no thread_map |
| 724 | * in evlist. Which causes newly created perf.data doesn't |
| 725 | * contain map and comm information. |
| 726 | * Create a fake thread_map and directly call |
| 727 | * perf_event__synthesize_thread_map() for those events. |
| 728 | */ |
| 729 | if (target__none(&rec->opts.target)) |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 730 | record__synthesize_workload(rec, false); |
Wang Nan | be7b0c9 | 2016-04-20 18:59:54 +0000 | [diff] [blame] | 731 | } |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 732 | return fd; |
| 733 | } |
| 734 | |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 735 | static volatile int workload_exec_errno; |
| 736 | |
| 737 | /* |
| 738 | * perf_evlist__prepare_workload will send a SIGUSR1 |
| 739 | * if the fork fails, since we asked by setting its |
| 740 | * want_signal to true. |
| 741 | */ |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 742 | static void workload_exec_failed_signal(int signo __maybe_unused, |
| 743 | siginfo_t *info, |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 744 | void *ucontext __maybe_unused) |
| 745 | { |
| 746 | workload_exec_errno = info->si_value.sival_int; |
| 747 | done = 1; |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 748 | child_finished = 1; |
| 749 | } |
| 750 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 751 | static void snapshot_sig_handler(int sig); |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 752 | static void alarm_sig_handler(int sig); |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 753 | |
Adrian Hunter | 46bc29b | 2016-03-08 10:38:44 +0200 | [diff] [blame] | 754 | int __weak |
| 755 | perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused, |
| 756 | struct perf_tool *tool __maybe_unused, |
| 757 | perf_event__handler_t process __maybe_unused, |
| 758 | struct machine *machine __maybe_unused) |
| 759 | { |
| 760 | return 0; |
| 761 | } |
| 762 | |
Wang Nan | ee667f9 | 2016-06-27 10:24:05 +0000 | [diff] [blame] | 763 | static const struct perf_event_mmap_page * |
| 764 | perf_evlist__pick_pc(struct perf_evlist *evlist) |
| 765 | { |
Wang Nan | b2cb615 | 2016-07-14 08:34:39 +0000 | [diff] [blame] | 766 | if (evlist) { |
| 767 | if (evlist->mmap && evlist->mmap[0].base) |
| 768 | return evlist->mmap[0].base; |
| 769 | if (evlist->backward_mmap && evlist->backward_mmap[0].base) |
| 770 | return evlist->backward_mmap[0].base; |
| 771 | } |
Wang Nan | ee667f9 | 2016-06-27 10:24:05 +0000 | [diff] [blame] | 772 | return NULL; |
| 773 | } |
| 774 | |
Wang Nan | c45628b | 2016-05-24 02:28:59 +0000 | [diff] [blame] | 775 | static const struct perf_event_mmap_page *record__pick_pc(struct record *rec) |
| 776 | { |
Wang Nan | ee667f9 | 2016-06-27 10:24:05 +0000 | [diff] [blame] | 777 | const struct perf_event_mmap_page *pc; |
| 778 | |
| 779 | pc = perf_evlist__pick_pc(rec->evlist); |
| 780 | if (pc) |
| 781 | return pc; |
Wang Nan | c45628b | 2016-05-24 02:28:59 +0000 | [diff] [blame] | 782 | return NULL; |
| 783 | } |
| 784 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 785 | static int record__synthesize(struct record *rec, bool tail) |
Wang Nan | c45c86e | 2016-02-26 09:32:07 +0000 | [diff] [blame] | 786 | { |
| 787 | struct perf_session *session = rec->session; |
| 788 | struct machine *machine = &session->machines.host; |
| 789 | struct perf_data_file *file = &rec->file; |
| 790 | struct record_opts *opts = &rec->opts; |
| 791 | struct perf_tool *tool = &rec->tool; |
| 792 | int fd = perf_data_file__fd(file); |
| 793 | int err = 0; |
| 794 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 795 | if (rec->opts.tail_synthesize != tail) |
| 796 | return 0; |
| 797 | |
Wang Nan | c45c86e | 2016-02-26 09:32:07 +0000 | [diff] [blame] | 798 | if (file->is_pipe) { |
| 799 | err = perf_event__synthesize_attrs(tool, session, |
| 800 | process_synthesized_event); |
| 801 | if (err < 0) { |
| 802 | pr_err("Couldn't synthesize attrs.\n"); |
| 803 | goto out; |
| 804 | } |
| 805 | |
| 806 | if (have_tracepoints(&rec->evlist->entries)) { |
| 807 | /* |
| 808 | * FIXME err <= 0 here actually means that |
| 809 | * there were no tracepoints so its not really |
| 810 | * an error, just that we don't need to |
| 811 | * synthesize anything. We really have to |
| 812 | * return this more properly and also |
| 813 | * propagate errors that now are calling die() |
| 814 | */ |
| 815 | err = perf_event__synthesize_tracing_data(tool, fd, rec->evlist, |
| 816 | process_synthesized_event); |
| 817 | if (err <= 0) { |
| 818 | pr_err("Couldn't record tracing data.\n"); |
| 819 | goto out; |
| 820 | } |
| 821 | rec->bytes_written += err; |
| 822 | } |
| 823 | } |
| 824 | |
Wang Nan | c45628b | 2016-05-24 02:28:59 +0000 | [diff] [blame] | 825 | err = perf_event__synth_time_conv(record__pick_pc(rec), tool, |
Adrian Hunter | 46bc29b | 2016-03-08 10:38:44 +0200 | [diff] [blame] | 826 | process_synthesized_event, machine); |
| 827 | if (err) |
| 828 | goto out; |
| 829 | |
Wang Nan | c45c86e | 2016-02-26 09:32:07 +0000 | [diff] [blame] | 830 | if (rec->opts.full_auxtrace) { |
| 831 | err = perf_event__synthesize_auxtrace_info(rec->itr, tool, |
| 832 | session, process_synthesized_event); |
| 833 | if (err) |
| 834 | goto out; |
| 835 | } |
| 836 | |
| 837 | err = perf_event__synthesize_kernel_mmap(tool, process_synthesized_event, |
| 838 | machine); |
| 839 | WARN_ONCE(err < 0, "Couldn't record kernel reference relocation symbol\n" |
| 840 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 841 | "Check /proc/kallsyms permission or run as root.\n"); |
| 842 | |
| 843 | err = perf_event__synthesize_modules(tool, process_synthesized_event, |
| 844 | machine); |
| 845 | WARN_ONCE(err < 0, "Couldn't record kernel module information.\n" |
| 846 | "Symbol resolution may be skewed if relocation was used (e.g. kexec).\n" |
| 847 | "Check /proc/modules permission or run as root.\n"); |
| 848 | |
| 849 | if (perf_guest) { |
| 850 | machines__process_guests(&session->machines, |
| 851 | perf_event__synthesize_guest_os, tool); |
| 852 | } |
| 853 | |
| 854 | err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads, |
| 855 | process_synthesized_event, opts->sample_address, |
| 856 | opts->proc_map_timeout); |
| 857 | out: |
| 858 | return err; |
| 859 | } |
| 860 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 861 | static int __cmd_record(struct record *rec, int argc, const char **argv) |
Peter Zijlstra | 16c8a10 | 2009-05-05 17:50:27 +0200 | [diff] [blame] | 862 | { |
David Ahern | 57706ab | 2013-11-06 11:41:34 -0700 | [diff] [blame] | 863 | int err; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 864 | int status = 0; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 865 | unsigned long waking = 0; |
Zhang, Yanmin | 46be604 | 2010-03-18 11:36:04 -0300 | [diff] [blame] | 866 | const bool forks = argc > 0; |
Arnaldo Carvalho de Melo | 23346f2 | 2010-04-27 21:17:50 -0300 | [diff] [blame] | 867 | struct machine *machine; |
Arnaldo Carvalho de Melo | 45694aa | 2011-11-28 08:30:20 -0200 | [diff] [blame] | 868 | struct perf_tool *tool = &rec->tool; |
Arnaldo Carvalho de Melo | b400679 | 2013-12-19 14:43:45 -0300 | [diff] [blame] | 869 | struct record_opts *opts = &rec->opts; |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 870 | struct perf_data_file *file = &rec->file; |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 871 | struct perf_session *session; |
Arnaldo Carvalho de Melo | 6dcf45ef | 2014-08-13 11:33:59 -0300 | [diff] [blame] | 872 | bool disabled = false, draining = false; |
Namhyung Kim | 42aa276 | 2015-01-29 17:06:48 +0900 | [diff] [blame] | 873 | int fd; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 874 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 875 | rec->progname = argv[0]; |
Andi Kleen | 33e49ea | 2011-09-15 14:31:40 -0700 | [diff] [blame] | 876 | |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 877 | atexit(record__sig_exit); |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 878 | signal(SIGCHLD, sig_handler); |
| 879 | signal(SIGINT, sig_handler); |
David Ahern | 804f7ac | 2013-05-06 12:24:23 -0600 | [diff] [blame] | 880 | signal(SIGTERM, sig_handler); |
Wang Nan | a074865 | 2016-11-26 07:03:28 +0000 | [diff] [blame] | 881 | signal(SIGSEGV, sigsegv_handler); |
Wang Nan | c0bdc1c | 2016-04-13 08:21:06 +0000 | [diff] [blame] | 882 | |
Hari Bathini | f3b3614 | 2017-03-08 02:11:43 +0530 | [diff] [blame] | 883 | if (rec->opts.record_namespaces) |
| 884 | tool->namespace_events = true; |
| 885 | |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 886 | if (rec->opts.auxtrace_snapshot_mode || rec->switch_output.enabled) { |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 887 | signal(SIGUSR2, snapshot_sig_handler); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 888 | if (rec->opts.auxtrace_snapshot_mode) |
| 889 | trigger_on(&auxtrace_snapshot_trigger); |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 890 | if (rec->switch_output.enabled) |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 891 | trigger_on(&switch_output_trigger); |
Wang Nan | c0bdc1c | 2016-04-13 08:21:06 +0000 | [diff] [blame] | 892 | } else { |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 893 | signal(SIGUSR2, SIG_IGN); |
Wang Nan | c0bdc1c | 2016-04-13 08:21:06 +0000 | [diff] [blame] | 894 | } |
Peter Zijlstra | f597055 | 2009-06-18 23:22:55 +0200 | [diff] [blame] | 895 | |
Arnaldo Carvalho de Melo | b7b61cb | 2015-03-03 11:58:45 -0300 | [diff] [blame] | 896 | session = perf_session__new(file, false, tool); |
Arnaldo Carvalho de Melo | 94c744b | 2009-12-11 21:24:02 -0200 | [diff] [blame] | 897 | if (session == NULL) { |
Adrien BAK | ffa9188 | 2014-04-18 11:00:43 +0900 | [diff] [blame] | 898 | pr_err("Perf session creation failed.\n"); |
Arnaldo Carvalho de Melo | a9a70bb | 2009-11-17 01:18:11 -0200 | [diff] [blame] | 899 | return -1; |
| 900 | } |
| 901 | |
Namhyung Kim | 42aa276 | 2015-01-29 17:06:48 +0900 | [diff] [blame] | 902 | fd = perf_data_file__fd(file); |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 903 | rec->session = session; |
| 904 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 905 | record__init_features(rec); |
Stephane Eranian | 330aa67 | 2012-03-08 23:47:46 +0100 | [diff] [blame] | 906 | |
Arnaldo Carvalho de Melo | d4db3f1 | 2009-12-27 21:36:57 -0200 | [diff] [blame] | 907 | if (forks) { |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 908 | err = perf_evlist__prepare_workload(rec->evlist, &opts->target, |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 909 | argv, file->is_pipe, |
Arnaldo Carvalho de Melo | 735f7e0 | 2014-01-03 14:56:49 -0300 | [diff] [blame] | 910 | workload_exec_failed_signal); |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 911 | if (err < 0) { |
| 912 | pr_err("Couldn't run the workload!\n"); |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 913 | status = err; |
Arnaldo Carvalho de Melo | 35b9d88 | 2011-11-09 08:47:15 -0200 | [diff] [blame] | 914 | goto out_delete_session; |
Jens Axboe | 0a5ac84 | 2009-08-12 11:18:01 +0200 | [diff] [blame] | 915 | } |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 916 | } |
| 917 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 918 | if (record__open(rec) != 0) { |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 919 | err = -1; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 920 | goto out_child; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 921 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 922 | |
Wang Nan | 8690a2a | 2016-02-22 09:10:32 +0000 | [diff] [blame] | 923 | err = bpf__apply_obj_config(); |
| 924 | if (err) { |
| 925 | char errbuf[BUFSIZ]; |
| 926 | |
| 927 | bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); |
| 928 | pr_err("ERROR: Apply config to BPF failed: %s\n", |
| 929 | errbuf); |
| 930 | goto out_child; |
| 931 | } |
| 932 | |
Adrian Hunter | cca8482 | 2015-08-19 17:29:21 +0300 | [diff] [blame] | 933 | /* |
| 934 | * Normally perf_session__new would do this, but it doesn't have the |
| 935 | * evlist. |
| 936 | */ |
| 937 | if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) { |
| 938 | pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n"); |
| 939 | rec->tool.ordered_events = false; |
| 940 | } |
| 941 | |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 942 | if (!rec->evlist->nr_groups) |
Namhyung Kim | a8bb559 | 2013-01-22 18:09:31 +0900 | [diff] [blame] | 943 | perf_header__clear_feat(&session->header, HEADER_GROUP_DESC); |
| 944 | |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 945 | if (file->is_pipe) { |
Namhyung Kim | 42aa276 | 2015-01-29 17:06:48 +0900 | [diff] [blame] | 946 | err = perf_header__write_pipe(fd); |
Tom Zanussi | 529870e | 2010-04-01 23:59:16 -0500 | [diff] [blame] | 947 | if (err < 0) |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 948 | goto out_child; |
Jiri Olsa | 563aecb | 2013-06-05 13:35:06 +0200 | [diff] [blame] | 949 | } else { |
Namhyung Kim | 42aa276 | 2015-01-29 17:06:48 +0900 | [diff] [blame] | 950 | err = perf_session__write_header(session, rec->evlist, fd, false); |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 951 | if (err < 0) |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 952 | goto out_child; |
Arnaldo Carvalho de Melo | d5eed90 | 2009-11-19 14:55:56 -0200 | [diff] [blame] | 953 | } |
Peter Zijlstra | 7c6a1c6 | 2009-06-25 17:05:54 +0200 | [diff] [blame] | 954 | |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 955 | if (!rec->no_buildid |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 956 | && !perf_header__has_feat(&session->header, HEADER_BUILD_ID)) { |
David Ahern | d366549 | 2012-02-06 15:27:52 -0700 | [diff] [blame] | 957 | pr_err("Couldn't generate buildids. " |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 958 | "Use --no-buildid to profile anyway.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 959 | err = -1; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 960 | goto out_child; |
Robert Richter | e20960c | 2011-12-07 10:02:55 +0100 | [diff] [blame] | 961 | } |
| 962 | |
Arnaldo Carvalho de Melo | 34ba512 | 2012-12-19 09:04:24 -0300 | [diff] [blame] | 963 | machine = &session->machines.host; |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 964 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 965 | err = record__synthesize(rec, false); |
Wang Nan | c45c86e | 2016-02-26 09:32:07 +0000 | [diff] [blame] | 966 | if (err < 0) |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 967 | goto out_child; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 968 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 969 | if (rec->realtime_prio) { |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 970 | struct sched_param param; |
| 971 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 972 | param.sched_priority = rec->realtime_prio; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 973 | if (sched_setscheduler(0, SCHED_FIFO, ¶m)) { |
Arnaldo Carvalho de Melo | 6beba7a | 2009-10-21 17:34:06 -0200 | [diff] [blame] | 974 | pr_err("Could not set realtime priority.\n"); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 975 | err = -1; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 976 | goto out_child; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 977 | } |
| 978 | } |
| 979 | |
Jiri Olsa | 774cb49 | 2012-11-12 18:34:01 +0100 | [diff] [blame] | 980 | /* |
| 981 | * When perf is starting the traced process, all the events |
| 982 | * (apart from group members) have enable_on_exec=1 set, |
| 983 | * so don't spoil it by prematurely enabling them. |
| 984 | */ |
Andi Kleen | 6619a53 | 2014-01-11 13:38:27 -0800 | [diff] [blame] | 985 | if (!target__none(&opts->target) && !opts->initial_delay) |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 986 | perf_evlist__enable(rec->evlist); |
David Ahern | 764e16a3 | 2011-08-25 10:17:55 -0600 | [diff] [blame] | 987 | |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 988 | /* |
| 989 | * Let the child rip |
| 990 | */ |
Namhyung Kim | e803cf9 | 2015-09-22 09:24:55 +0900 | [diff] [blame] | 991 | if (forks) { |
Namhyung Kim | e5bed56 | 2015-09-30 10:45:24 +0900 | [diff] [blame] | 992 | union perf_event *event; |
Hari Bathini | e907caf | 2017-03-08 02:11:51 +0530 | [diff] [blame] | 993 | pid_t tgid; |
Namhyung Kim | e5bed56 | 2015-09-30 10:45:24 +0900 | [diff] [blame] | 994 | |
| 995 | event = malloc(sizeof(event->comm) + machine->id_hdr_size); |
| 996 | if (event == NULL) { |
| 997 | err = -ENOMEM; |
| 998 | goto out_child; |
| 999 | } |
| 1000 | |
Namhyung Kim | e803cf9 | 2015-09-22 09:24:55 +0900 | [diff] [blame] | 1001 | /* |
| 1002 | * Some H/W events are generated before COMM event |
| 1003 | * which is emitted during exec(), so perf script |
| 1004 | * cannot see a correct process name for those events. |
| 1005 | * Synthesize COMM event to prevent it. |
| 1006 | */ |
Hari Bathini | e907caf | 2017-03-08 02:11:51 +0530 | [diff] [blame] | 1007 | tgid = perf_event__synthesize_comm(tool, event, |
| 1008 | rec->evlist->workload.pid, |
| 1009 | process_synthesized_event, |
| 1010 | machine); |
| 1011 | free(event); |
| 1012 | |
| 1013 | if (tgid == -1) |
| 1014 | goto out_child; |
| 1015 | |
| 1016 | event = malloc(sizeof(event->namespaces) + |
| 1017 | (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) + |
| 1018 | machine->id_hdr_size); |
| 1019 | if (event == NULL) { |
| 1020 | err = -ENOMEM; |
| 1021 | goto out_child; |
| 1022 | } |
| 1023 | |
| 1024 | /* |
| 1025 | * Synthesize NAMESPACES event for the command specified. |
| 1026 | */ |
| 1027 | perf_event__synthesize_namespaces(tool, event, |
| 1028 | rec->evlist->workload.pid, |
| 1029 | tgid, process_synthesized_event, |
| 1030 | machine); |
Namhyung Kim | e5bed56 | 2015-09-30 10:45:24 +0900 | [diff] [blame] | 1031 | free(event); |
Namhyung Kim | e803cf9 | 2015-09-22 09:24:55 +0900 | [diff] [blame] | 1032 | |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 1033 | perf_evlist__start_workload(rec->evlist); |
Namhyung Kim | e803cf9 | 2015-09-22 09:24:55 +0900 | [diff] [blame] | 1034 | } |
Peter Zijlstra | 856e966 | 2009-12-16 17:55:55 +0100 | [diff] [blame] | 1035 | |
Andi Kleen | 6619a53 | 2014-01-11 13:38:27 -0800 | [diff] [blame] | 1036 | if (opts->initial_delay) { |
Arnaldo Carvalho de Melo | 0693e68 | 2016-08-08 15:05:46 -0300 | [diff] [blame] | 1037 | usleep(opts->initial_delay * USEC_PER_MSEC); |
Andi Kleen | 6619a53 | 2014-01-11 13:38:27 -0800 | [diff] [blame] | 1038 | perf_evlist__enable(rec->evlist); |
| 1039 | } |
| 1040 | |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1041 | trigger_ready(&auxtrace_snapshot_trigger); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1042 | trigger_ready(&switch_output_trigger); |
Wang Nan | a074865 | 2016-11-26 07:03:28 +0000 | [diff] [blame] | 1043 | perf_hooks__invoke_record_start(); |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 1044 | for (;;) { |
Yang Shi | 9f06519 | 2015-09-29 14:49:43 -0700 | [diff] [blame] | 1045 | unsigned long long hits = rec->samples; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 1046 | |
Wang Nan | 05737464 | 2016-07-14 08:34:43 +0000 | [diff] [blame] | 1047 | /* |
| 1048 | * rec->evlist->bkw_mmap_state is possible to be |
| 1049 | * BKW_MMAP_EMPTY here: when done == true and |
| 1050 | * hits != rec->samples in previous round. |
| 1051 | * |
| 1052 | * perf_evlist__toggle_bkw_mmap ensure we never |
| 1053 | * convert BKW_MMAP_EMPTY to BKW_MMAP_DATA_PENDING. |
| 1054 | */ |
| 1055 | if (trigger_is_hit(&switch_output_trigger) || done || draining) |
| 1056 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_DATA_PENDING); |
| 1057 | |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 1058 | if (record__mmap_read_all(rec) < 0) { |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1059 | trigger_error(&auxtrace_snapshot_trigger); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1060 | trigger_error(&switch_output_trigger); |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 1061 | err = -1; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1062 | goto out_child; |
David Ahern | 8d3eca2 | 2012-08-26 12:24:47 -0600 | [diff] [blame] | 1063 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 1064 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1065 | if (auxtrace_record__snapshot_started) { |
| 1066 | auxtrace_record__snapshot_started = 0; |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1067 | if (!trigger_is_error(&auxtrace_snapshot_trigger)) |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1068 | record__read_auxtrace_snapshot(rec); |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1069 | if (trigger_is_error(&auxtrace_snapshot_trigger)) { |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1070 | pr_err("AUX area tracing snapshot failed\n"); |
| 1071 | err = -1; |
| 1072 | goto out_child; |
| 1073 | } |
| 1074 | } |
| 1075 | |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1076 | if (trigger_is_hit(&switch_output_trigger)) { |
Wang Nan | 05737464 | 2016-07-14 08:34:43 +0000 | [diff] [blame] | 1077 | /* |
| 1078 | * If switch_output_trigger is hit, the data in |
| 1079 | * overwritable ring buffer should have been collected, |
| 1080 | * so bkw_mmap_state should be set to BKW_MMAP_EMPTY. |
| 1081 | * |
| 1082 | * If SIGUSR2 raise after or during record__mmap_read_all(), |
| 1083 | * record__mmap_read_all() didn't collect data from |
| 1084 | * overwritable ring buffer. Read again. |
| 1085 | */ |
| 1086 | if (rec->evlist->bkw_mmap_state == BKW_MMAP_RUNNING) |
| 1087 | continue; |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1088 | trigger_ready(&switch_output_trigger); |
| 1089 | |
Wang Nan | 05737464 | 2016-07-14 08:34:43 +0000 | [diff] [blame] | 1090 | /* |
| 1091 | * Reenable events in overwrite ring buffer after |
| 1092 | * record__mmap_read_all(): we should have collected |
| 1093 | * data from it. |
| 1094 | */ |
| 1095 | perf_evlist__toggle_bkw_mmap(rec->evlist, BKW_MMAP_RUNNING); |
| 1096 | |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1097 | if (!quiet) |
| 1098 | fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n", |
| 1099 | waking); |
| 1100 | waking = 0; |
| 1101 | fd = record__switch_output(rec, false); |
| 1102 | if (fd < 0) { |
| 1103 | pr_err("Failed to switch to new file\n"); |
| 1104 | trigger_error(&switch_output_trigger); |
| 1105 | err = fd; |
| 1106 | goto out_child; |
| 1107 | } |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1108 | |
| 1109 | /* re-arm the alarm */ |
| 1110 | if (rec->switch_output.time) |
| 1111 | alarm(rec->switch_output.time); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1112 | } |
| 1113 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1114 | if (hits == rec->samples) { |
Arnaldo Carvalho de Melo | 6dcf45ef | 2014-08-13 11:33:59 -0300 | [diff] [blame] | 1115 | if (done || draining) |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 1116 | break; |
Arnaldo Carvalho de Melo | f66a889 | 2014-08-18 17:25:59 -0300 | [diff] [blame] | 1117 | err = perf_evlist__poll(rec->evlist, -1); |
Jiri Olsa | a515114 | 2014-06-02 13:44:23 -0400 | [diff] [blame] | 1118 | /* |
| 1119 | * Propagate error, only if there's any. Ignore positive |
| 1120 | * number of returned events and interrupt error. |
| 1121 | */ |
| 1122 | if (err > 0 || (err < 0 && errno == EINTR)) |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1123 | err = 0; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 1124 | waking++; |
Arnaldo Carvalho de Melo | 6dcf45ef | 2014-08-13 11:33:59 -0300 | [diff] [blame] | 1125 | |
| 1126 | if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) |
| 1127 | draining = true; |
Peter Zijlstra | 8b41266 | 2009-09-17 19:59:05 +0200 | [diff] [blame] | 1128 | } |
| 1129 | |
Jiri Olsa | 774cb49 | 2012-11-12 18:34:01 +0100 | [diff] [blame] | 1130 | /* |
| 1131 | * When perf is starting the traced process, at the end events |
| 1132 | * die with the process and we wait for that. Thus no need to |
| 1133 | * disable events in this case. |
| 1134 | */ |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1135 | if (done && !disabled && !target__none(&opts->target)) { |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1136 | trigger_off(&auxtrace_snapshot_trigger); |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 1137 | perf_evlist__disable(rec->evlist); |
Jiri Olsa | 2711926 | 2012-11-12 18:34:02 +0100 | [diff] [blame] | 1138 | disabled = true; |
| 1139 | } |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 1140 | } |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1141 | trigger_off(&auxtrace_snapshot_trigger); |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1142 | trigger_off(&switch_output_trigger); |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 1143 | |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 1144 | if (forks && workload_exec_errno) { |
Masami Hiramatsu | 35550da | 2014-08-14 02:22:43 +0000 | [diff] [blame] | 1145 | char msg[STRERR_BUFSIZE]; |
Arnaldo Carvalho de Melo | c8b5f2c | 2016-07-06 11:56:20 -0300 | [diff] [blame] | 1146 | const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 1147 | pr_err("Workload failed: %s\n", emsg); |
| 1148 | err = -1; |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1149 | goto out_child; |
Arnaldo Carvalho de Melo | f33cbe7 | 2014-01-02 15:11:25 -0300 | [diff] [blame] | 1150 | } |
| 1151 | |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1152 | if (!quiet) |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1153 | fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking); |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 1154 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 1155 | if (target__none(&rec->opts.target)) |
| 1156 | record__synthesize_workload(rec, true); |
| 1157 | |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1158 | out_child: |
| 1159 | if (forks) { |
| 1160 | int exit_status; |
Ingo Molnar | addc278 | 2009-06-02 23:43:11 +0200 | [diff] [blame] | 1161 | |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1162 | if (!child_finished) |
| 1163 | kill(rec->evlist->workload.pid, SIGTERM); |
| 1164 | |
| 1165 | wait(&exit_status); |
| 1166 | |
| 1167 | if (err < 0) |
| 1168 | status = err; |
| 1169 | else if (WIFEXITED(exit_status)) |
| 1170 | status = WEXITSTATUS(exit_status); |
| 1171 | else if (WIFSIGNALED(exit_status)) |
| 1172 | signr = WTERMSIG(exit_status); |
| 1173 | } else |
| 1174 | status = err; |
| 1175 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 1176 | record__synthesize(rec, true); |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1177 | /* this will be recalculated during process_buildids() */ |
| 1178 | rec->samples = 0; |
| 1179 | |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 1180 | if (!err) { |
| 1181 | if (!rec->timestamp_filename) { |
| 1182 | record__finish_output(rec); |
| 1183 | } else { |
| 1184 | fd = record__switch_output(rec, true); |
| 1185 | if (fd < 0) { |
| 1186 | status = fd; |
| 1187 | goto out_delete_session; |
| 1188 | } |
| 1189 | } |
| 1190 | } |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1191 | |
Wang Nan | a074865 | 2016-11-26 07:03:28 +0000 | [diff] [blame] | 1192 | perf_hooks__invoke_record_end(); |
| 1193 | |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1194 | if (!err && !quiet) { |
| 1195 | char samples[128]; |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 1196 | const char *postfix = rec->timestamp_filename ? |
| 1197 | ".<timestamp>" : ""; |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1198 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1199 | if (rec->samples && !rec->opts.full_auxtrace) |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1200 | scnprintf(samples, sizeof(samples), |
| 1201 | " (%" PRIu64 " samples)", rec->samples); |
| 1202 | else |
| 1203 | samples[0] = '\0'; |
| 1204 | |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 1205 | fprintf(stderr, "[ perf record: Captured and wrote %.3f MB %s%s%s ]\n", |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1206 | perf_data_file__size(file) / 1024.0 / 1024.0, |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 1207 | file->path, postfix, samples); |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1208 | } |
| 1209 | |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1210 | out_delete_session: |
| 1211 | perf_session__delete(session); |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1212 | return status; |
Peter Zijlstra | de9ac07 | 2009-04-08 15:01:31 +0200 | [diff] [blame] | 1213 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1214 | |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1215 | static void callchain_debug(struct callchain_param *callchain) |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1216 | { |
Kan Liang | aad2b21 | 2015-01-05 13:23:04 -0500 | [diff] [blame] | 1217 | static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF", "LBR" }; |
Jiri Olsa | a601fdf | 2014-02-03 12:44:43 +0100 | [diff] [blame] | 1218 | |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1219 | pr_debug("callchain: type %s\n", str[callchain->record_mode]); |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1220 | |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1221 | if (callchain->record_mode == CALLCHAIN_DWARF) |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1222 | pr_debug("callchain: stack dump size %d\n", |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1223 | callchain->dump_size); |
| 1224 | } |
| 1225 | |
| 1226 | int record_opts__parse_callchain(struct record_opts *record, |
| 1227 | struct callchain_param *callchain, |
| 1228 | const char *arg, bool unset) |
| 1229 | { |
| 1230 | int ret; |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1231 | callchain->enabled = !unset; |
| 1232 | |
| 1233 | /* --no-call-graph */ |
| 1234 | if (unset) { |
| 1235 | callchain->record_mode = CALLCHAIN_NONE; |
| 1236 | pr_debug("callchain: disabled\n"); |
| 1237 | return 0; |
| 1238 | } |
| 1239 | |
| 1240 | ret = parse_callchain_record_opt(arg, callchain); |
| 1241 | if (!ret) { |
| 1242 | /* Enable data address sampling for DWARF unwind. */ |
| 1243 | if (callchain->record_mode == CALLCHAIN_DWARF) |
| 1244 | record->sample_address = true; |
| 1245 | callchain_debug(callchain); |
| 1246 | } |
| 1247 | |
| 1248 | return ret; |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1249 | } |
| 1250 | |
Kan Liang | c421e80 | 2015-07-29 05:42:12 -0400 | [diff] [blame] | 1251 | int record_parse_callchain_opt(const struct option *opt, |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1252 | const char *arg, |
| 1253 | int unset) |
| 1254 | { |
Arnaldo Carvalho de Melo | 0883e82 | 2016-04-15 16:37:17 -0300 | [diff] [blame] | 1255 | return record_opts__parse_callchain(opt->value, &callchain_param, arg, unset); |
Jiri Olsa | 26d3302 | 2012-08-07 15:20:47 +0200 | [diff] [blame] | 1256 | } |
| 1257 | |
Kan Liang | c421e80 | 2015-07-29 05:42:12 -0400 | [diff] [blame] | 1258 | int record_callchain_opt(const struct option *opt, |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1259 | const char *arg __maybe_unused, |
| 1260 | int unset __maybe_unused) |
| 1261 | { |
Arnaldo Carvalho de Melo | 2ddd5c0 | 2016-04-18 12:09:08 -0300 | [diff] [blame] | 1262 | struct callchain_param *callchain = opt->value; |
Kan Liang | c421e80 | 2015-07-29 05:42:12 -0400 | [diff] [blame] | 1263 | |
Arnaldo Carvalho de Melo | 2ddd5c0 | 2016-04-18 12:09:08 -0300 | [diff] [blame] | 1264 | callchain->enabled = true; |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1265 | |
Arnaldo Carvalho de Melo | 2ddd5c0 | 2016-04-18 12:09:08 -0300 | [diff] [blame] | 1266 | if (callchain->record_mode == CALLCHAIN_NONE) |
| 1267 | callchain->record_mode = CALLCHAIN_FP; |
Jiri Olsa | eb853e8 | 2014-02-03 12:44:42 +0100 | [diff] [blame] | 1268 | |
Arnaldo Carvalho de Melo | 2ddd5c0 | 2016-04-18 12:09:08 -0300 | [diff] [blame] | 1269 | callchain_debug(callchain); |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1270 | return 0; |
| 1271 | } |
| 1272 | |
Jiri Olsa | eb853e8 | 2014-02-03 12:44:42 +0100 | [diff] [blame] | 1273 | static int perf_record_config(const char *var, const char *value, void *cb) |
| 1274 | { |
Namhyung Kim | 7a29c08 | 2015-12-15 10:49:56 +0900 | [diff] [blame] | 1275 | struct record *rec = cb; |
| 1276 | |
| 1277 | if (!strcmp(var, "record.build-id")) { |
| 1278 | if (!strcmp(value, "cache")) |
| 1279 | rec->no_buildid_cache = false; |
| 1280 | else if (!strcmp(value, "no-cache")) |
| 1281 | rec->no_buildid_cache = true; |
| 1282 | else if (!strcmp(value, "skip")) |
| 1283 | rec->no_buildid = true; |
| 1284 | else |
| 1285 | return -1; |
| 1286 | return 0; |
| 1287 | } |
Jiri Olsa | eb853e8 | 2014-02-03 12:44:42 +0100 | [diff] [blame] | 1288 | if (!strcmp(var, "record.call-graph")) |
Namhyung Kim | 5a2e5e8 | 2014-09-23 10:01:44 +0900 | [diff] [blame] | 1289 | var = "call-graph.record-mode"; /* fall-through */ |
Jiri Olsa | eb853e8 | 2014-02-03 12:44:42 +0100 | [diff] [blame] | 1290 | |
| 1291 | return perf_default_config(var, value, cb); |
| 1292 | } |
| 1293 | |
Peter Zijlstra | 814c8c3 | 2015-03-31 00:19:31 +0200 | [diff] [blame] | 1294 | struct clockid_map { |
| 1295 | const char *name; |
| 1296 | int clockid; |
| 1297 | }; |
| 1298 | |
| 1299 | #define CLOCKID_MAP(n, c) \ |
| 1300 | { .name = n, .clockid = (c), } |
| 1301 | |
| 1302 | #define CLOCKID_END { .name = NULL, } |
| 1303 | |
| 1304 | |
| 1305 | /* |
| 1306 | * Add the missing ones, we need to build on many distros... |
| 1307 | */ |
| 1308 | #ifndef CLOCK_MONOTONIC_RAW |
| 1309 | #define CLOCK_MONOTONIC_RAW 4 |
| 1310 | #endif |
| 1311 | #ifndef CLOCK_BOOTTIME |
| 1312 | #define CLOCK_BOOTTIME 7 |
| 1313 | #endif |
| 1314 | #ifndef CLOCK_TAI |
| 1315 | #define CLOCK_TAI 11 |
| 1316 | #endif |
| 1317 | |
| 1318 | static const struct clockid_map clockids[] = { |
| 1319 | /* available for all events, NMI safe */ |
| 1320 | CLOCKID_MAP("monotonic", CLOCK_MONOTONIC), |
| 1321 | CLOCKID_MAP("monotonic_raw", CLOCK_MONOTONIC_RAW), |
| 1322 | |
| 1323 | /* available for some events */ |
| 1324 | CLOCKID_MAP("realtime", CLOCK_REALTIME), |
| 1325 | CLOCKID_MAP("boottime", CLOCK_BOOTTIME), |
| 1326 | CLOCKID_MAP("tai", CLOCK_TAI), |
| 1327 | |
| 1328 | /* available for the lazy */ |
| 1329 | CLOCKID_MAP("mono", CLOCK_MONOTONIC), |
| 1330 | CLOCKID_MAP("raw", CLOCK_MONOTONIC_RAW), |
| 1331 | CLOCKID_MAP("real", CLOCK_REALTIME), |
| 1332 | CLOCKID_MAP("boot", CLOCK_BOOTTIME), |
| 1333 | |
| 1334 | CLOCKID_END, |
| 1335 | }; |
| 1336 | |
| 1337 | static int parse_clockid(const struct option *opt, const char *str, int unset) |
| 1338 | { |
| 1339 | struct record_opts *opts = (struct record_opts *)opt->value; |
| 1340 | const struct clockid_map *cm; |
| 1341 | const char *ostr = str; |
| 1342 | |
| 1343 | if (unset) { |
| 1344 | opts->use_clockid = 0; |
| 1345 | return 0; |
| 1346 | } |
| 1347 | |
| 1348 | /* no arg passed */ |
| 1349 | if (!str) |
| 1350 | return 0; |
| 1351 | |
| 1352 | /* no setting it twice */ |
| 1353 | if (opts->use_clockid) |
| 1354 | return -1; |
| 1355 | |
| 1356 | opts->use_clockid = true; |
| 1357 | |
| 1358 | /* if its a number, we're done */ |
| 1359 | if (sscanf(str, "%d", &opts->clockid) == 1) |
| 1360 | return 0; |
| 1361 | |
| 1362 | /* allow a "CLOCK_" prefix to the name */ |
| 1363 | if (!strncasecmp(str, "CLOCK_", 6)) |
| 1364 | str += 6; |
| 1365 | |
| 1366 | for (cm = clockids; cm->name; cm++) { |
| 1367 | if (!strcasecmp(str, cm->name)) { |
| 1368 | opts->clockid = cm->clockid; |
| 1369 | return 0; |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | opts->use_clockid = false; |
| 1374 | ui__warning("unknown clockid %s, check man page\n", ostr); |
| 1375 | return -1; |
| 1376 | } |
| 1377 | |
Adrian Hunter | e9db131 | 2015-04-09 18:53:46 +0300 | [diff] [blame] | 1378 | static int record__parse_mmap_pages(const struct option *opt, |
| 1379 | const char *str, |
| 1380 | int unset __maybe_unused) |
| 1381 | { |
| 1382 | struct record_opts *opts = opt->value; |
| 1383 | char *s, *p; |
| 1384 | unsigned int mmap_pages; |
| 1385 | int ret; |
| 1386 | |
| 1387 | if (!str) |
| 1388 | return -EINVAL; |
| 1389 | |
| 1390 | s = strdup(str); |
| 1391 | if (!s) |
| 1392 | return -ENOMEM; |
| 1393 | |
| 1394 | p = strchr(s, ','); |
| 1395 | if (p) |
| 1396 | *p = '\0'; |
| 1397 | |
| 1398 | if (*s) { |
| 1399 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, s); |
| 1400 | if (ret) |
| 1401 | goto out_free; |
| 1402 | opts->mmap_pages = mmap_pages; |
| 1403 | } |
| 1404 | |
| 1405 | if (!p) { |
| 1406 | ret = 0; |
| 1407 | goto out_free; |
| 1408 | } |
| 1409 | |
| 1410 | ret = __perf_evlist__parse_mmap_pages(&mmap_pages, p + 1); |
| 1411 | if (ret) |
| 1412 | goto out_free; |
| 1413 | |
| 1414 | opts->auxtrace_mmap_pages = mmap_pages; |
| 1415 | |
| 1416 | out_free: |
| 1417 | free(s); |
| 1418 | return ret; |
| 1419 | } |
| 1420 | |
Jiri Olsa | 0c58244 | 2017-01-09 10:51:59 +0100 | [diff] [blame] | 1421 | static void switch_output_size_warn(struct record *rec) |
| 1422 | { |
| 1423 | u64 wakeup_size = perf_evlist__mmap_size(rec->opts.mmap_pages); |
| 1424 | struct switch_output *s = &rec->switch_output; |
| 1425 | |
| 1426 | wakeup_size /= 2; |
| 1427 | |
| 1428 | if (s->size < wakeup_size) { |
| 1429 | char buf[100]; |
| 1430 | |
| 1431 | unit_number__scnprintf(buf, sizeof(buf), wakeup_size); |
| 1432 | pr_warning("WARNING: switch-output data size lower than " |
| 1433 | "wakeup kernel buffer size (%s) " |
| 1434 | "expect bigger perf.data sizes\n", buf); |
| 1435 | } |
| 1436 | } |
| 1437 | |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1438 | static int switch_output_setup(struct record *rec) |
| 1439 | { |
| 1440 | struct switch_output *s = &rec->switch_output; |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1441 | static struct parse_tag tags_size[] = { |
| 1442 | { .tag = 'B', .mult = 1 }, |
| 1443 | { .tag = 'K', .mult = 1 << 10 }, |
| 1444 | { .tag = 'M', .mult = 1 << 20 }, |
| 1445 | { .tag = 'G', .mult = 1 << 30 }, |
| 1446 | { .tag = 0 }, |
| 1447 | }; |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1448 | static struct parse_tag tags_time[] = { |
| 1449 | { .tag = 's', .mult = 1 }, |
| 1450 | { .tag = 'm', .mult = 60 }, |
| 1451 | { .tag = 'h', .mult = 60*60 }, |
| 1452 | { .tag = 'd', .mult = 60*60*24 }, |
| 1453 | { .tag = 0 }, |
| 1454 | }; |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1455 | unsigned long val; |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1456 | |
| 1457 | if (!s->set) |
| 1458 | return 0; |
| 1459 | |
| 1460 | if (!strcmp(s->str, "signal")) { |
| 1461 | s->signal = true; |
| 1462 | pr_debug("switch-output with SIGUSR2 signal\n"); |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1463 | goto enabled; |
| 1464 | } |
| 1465 | |
| 1466 | val = parse_tag_value(s->str, tags_size); |
| 1467 | if (val != (unsigned long) -1) { |
| 1468 | s->size = val; |
| 1469 | pr_debug("switch-output with %s size threshold\n", s->str); |
| 1470 | goto enabled; |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1471 | } |
| 1472 | |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1473 | val = parse_tag_value(s->str, tags_time); |
| 1474 | if (val != (unsigned long) -1) { |
| 1475 | s->time = val; |
| 1476 | pr_debug("switch-output with %s time threshold (%lu seconds)\n", |
| 1477 | s->str, s->time); |
| 1478 | goto enabled; |
| 1479 | } |
| 1480 | |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1481 | return -1; |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1482 | |
| 1483 | enabled: |
| 1484 | rec->timestamp_filename = true; |
| 1485 | s->enabled = true; |
Jiri Olsa | 0c58244 | 2017-01-09 10:51:59 +0100 | [diff] [blame] | 1486 | |
| 1487 | if (s->size && !rec->opts.no_buffering) |
| 1488 | switch_output_size_warn(rec); |
| 1489 | |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1490 | return 0; |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1491 | } |
| 1492 | |
Namhyung Kim | e5b2c20 | 2014-10-23 00:15:46 +0900 | [diff] [blame] | 1493 | static const char * const __record_usage[] = { |
Mike Galbraith | 9e096753 | 2009-05-28 16:25:34 +0200 | [diff] [blame] | 1494 | "perf record [<options>] [<command>]", |
| 1495 | "perf record [<options>] -- <command> [<options>]", |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1496 | NULL |
| 1497 | }; |
Namhyung Kim | e5b2c20 | 2014-10-23 00:15:46 +0900 | [diff] [blame] | 1498 | const char * const *record_usage = __record_usage; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1499 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1500 | /* |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 1501 | * XXX Ideally would be local to cmd_record() and passed to a record__new |
| 1502 | * because we need to have access to it in record__exit, that is called |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1503 | * after cmd_record() exits, but since record_options need to be accessible to |
| 1504 | * builtin-script, leave it here. |
| 1505 | * |
| 1506 | * At least we don't ouch it in all the other functions here directly. |
| 1507 | * |
| 1508 | * Just say no to tons of global variables, sigh. |
| 1509 | */ |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 1510 | static struct record record = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1511 | .opts = { |
Andi Kleen | 8affc2b | 2014-07-31 14:45:04 +0800 | [diff] [blame] | 1512 | .sample_time = true, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1513 | .mmap_pages = UINT_MAX, |
| 1514 | .user_freq = UINT_MAX, |
| 1515 | .user_interval = ULLONG_MAX, |
Arnaldo Carvalho de Melo | 447a601 | 2012-05-22 13:14:18 -0300 | [diff] [blame] | 1516 | .freq = 4000, |
Namhyung Kim | d1cb9fc | 2012-05-16 18:45:49 +0900 | [diff] [blame] | 1517 | .target = { |
| 1518 | .uses_mmap = true, |
Adrian Hunter | 3aa5939 | 2013-11-15 15:52:29 +0200 | [diff] [blame] | 1519 | .default_per_cpu = true, |
Namhyung Kim | d1cb9fc | 2012-05-16 18:45:49 +0900 | [diff] [blame] | 1520 | }, |
Kan Liang | 9d9cad7 | 2015-06-17 09:51:11 -0400 | [diff] [blame] | 1521 | .proc_map_timeout = 500, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1522 | }, |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1523 | .tool = { |
| 1524 | .sample = process_sample_event, |
| 1525 | .fork = perf_event__process_fork, |
Adrian Hunter | cca8482 | 2015-08-19 17:29:21 +0300 | [diff] [blame] | 1526 | .exit = perf_event__process_exit, |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1527 | .comm = perf_event__process_comm, |
Hari Bathini | f3b3614 | 2017-03-08 02:11:43 +0530 | [diff] [blame] | 1528 | .namespaces = perf_event__process_namespaces, |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1529 | .mmap = perf_event__process_mmap, |
| 1530 | .mmap2 = perf_event__process_mmap2, |
Adrian Hunter | cca8482 | 2015-08-19 17:29:21 +0300 | [diff] [blame] | 1531 | .ordered_events = true, |
Namhyung Kim | e3d5911 | 2015-01-29 17:06:44 +0900 | [diff] [blame] | 1532 | }, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1533 | }; |
Frederic Weisbecker | 7865e81 | 2010-04-14 19:42:07 +0200 | [diff] [blame] | 1534 | |
Namhyung Kim | 76a2654 | 2015-10-22 23:28:32 +0900 | [diff] [blame] | 1535 | const char record_callchain_help[] = CALLCHAIN_RECORD_HELP |
| 1536 | "\n\t\t\t\tDefault: fp"; |
Arnaldo Carvalho de Melo | 61eaa3b | 2012-10-01 15:20:58 -0300 | [diff] [blame] | 1537 | |
Wang Nan | 0aab213 | 2016-06-16 08:02:41 +0000 | [diff] [blame] | 1538 | static bool dry_run; |
| 1539 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1540 | /* |
| 1541 | * XXX Will stay a global variable till we fix builtin-script.c to stop messing |
| 1542 | * with it and switch to use the library functions in perf_evlist that came |
Arnaldo Carvalho de Melo | b400679 | 2013-12-19 14:43:45 -0300 | [diff] [blame] | 1543 | * from builtin-record.c, i.e. use record_opts, |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1544 | * perf_evlist__prepare_workload, etc instead of fork+exec'in 'perf record', |
| 1545 | * using pipes, etc. |
| 1546 | */ |
Jiri Olsa | efd2130 | 2017-01-03 09:19:55 +0100 | [diff] [blame] | 1547 | static struct option __record_options[] = { |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1548 | OPT_CALLBACK('e', "event", &record.evlist, "event", |
Thomas Gleixner | 86847b6 | 2009-06-06 12:24:17 +0200 | [diff] [blame] | 1549 | "event selector. use 'perf list' to list available events", |
Jiri Olsa | f120f9d | 2011-07-14 11:25:32 +0200 | [diff] [blame] | 1550 | parse_events_option), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1551 | OPT_CALLBACK(0, "filter", &record.evlist, "filter", |
Li Zefan | c171b55 | 2009-10-15 11:22:07 +0800 | [diff] [blame] | 1552 | "event filter", parse_filter), |
Wang Nan | 4ba1faa | 2015-07-10 07:36:10 +0000 | [diff] [blame] | 1553 | OPT_CALLBACK_NOOPT(0, "exclude-perf", &record.evlist, |
| 1554 | NULL, "don't record events from perf itself", |
| 1555 | exclude_perf), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1556 | OPT_STRING('p', "pid", &record.opts.target.pid, "pid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 1557 | "record events on existing process id"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1558 | OPT_STRING('t', "tid", &record.opts.target.tid, "tid", |
Zhang, Yanmin | d6d901c | 2010-03-18 11:36:05 -0300 | [diff] [blame] | 1559 | "record events on existing thread id"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1560 | OPT_INTEGER('r', "realtime", &record.realtime_prio, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1561 | "collect data with this RT SCHED_FIFO priority"), |
Arnaldo Carvalho de Melo | 509051e | 2014-01-14 17:52:14 -0300 | [diff] [blame] | 1562 | OPT_BOOLEAN(0, "no-buffering", &record.opts.no_buffering, |
Kirill Smelkov | acac03f | 2011-01-12 17:59:36 +0300 | [diff] [blame] | 1563 | "collect data without buffering"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1564 | OPT_BOOLEAN('R', "raw-samples", &record.opts.raw_samples, |
Frederic Weisbecker | daac07b | 2009-08-13 10:27:19 +0200 | [diff] [blame] | 1565 | "collect raw sample records from all opened counters"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1566 | OPT_BOOLEAN('a', "all-cpus", &record.opts.target.system_wide, |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1567 | "system-wide collection from all CPUs"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1568 | OPT_STRING('C', "cpu", &record.opts.target.cpu_list, "cpu", |
Stephane Eranian | c45c6ea | 2010-05-28 12:00:01 +0200 | [diff] [blame] | 1569 | "list of cpus to monitor"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1570 | OPT_U64('c', "count", &record.opts.user_interval, "event period to sample"), |
Jiri Olsa | f5fc141 | 2013-10-15 16:27:32 +0200 | [diff] [blame] | 1571 | OPT_STRING('o', "output", &record.file.path, "file", |
Ingo Molnar | abaff32 | 2009-06-02 22:59:57 +0200 | [diff] [blame] | 1572 | "output file name"), |
Adrian Hunter | 69e7e5b | 2013-11-18 11:55:57 +0200 | [diff] [blame] | 1573 | OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit, |
| 1574 | &record.opts.no_inherit_set, |
| 1575 | "child tasks do not inherit counters"), |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 1576 | OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize, |
| 1577 | "synthesize non-sample events at the end of output"), |
Wang Nan | 626a6b7 | 2016-07-14 08:34:45 +0000 | [diff] [blame] | 1578 | OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1579 | OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"), |
Adrian Hunter | e9db131 | 2015-04-09 18:53:46 +0300 | [diff] [blame] | 1580 | OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]", |
| 1581 | "number of mmap data pages and AUX area tracing mmap pages", |
| 1582 | record__parse_mmap_pages), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1583 | OPT_BOOLEAN(0, "group", &record.opts.group, |
Lin Ming | 43bece7 | 2011-08-17 18:42:07 +0800 | [diff] [blame] | 1584 | "put the counters into a counter group"), |
Arnaldo Carvalho de Melo | 2ddd5c0 | 2016-04-18 12:09:08 -0300 | [diff] [blame] | 1585 | OPT_CALLBACK_NOOPT('g', NULL, &callchain_param, |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1586 | NULL, "enables call-graph recording" , |
| 1587 | &record_callchain_opt), |
| 1588 | OPT_CALLBACK(0, "call-graph", &record.opts, |
Namhyung Kim | 76a2654 | 2015-10-22 23:28:32 +0900 | [diff] [blame] | 1589 | "record_mode[,record_size]", record_callchain_help, |
Jiri Olsa | 09b0fd4 | 2013-10-26 16:25:33 +0200 | [diff] [blame] | 1590 | &record_parse_callchain_opt), |
Ian Munsie | c055564 | 2010-04-13 18:37:33 +1000 | [diff] [blame] | 1591 | OPT_INCR('v', "verbose", &verbose, |
Ingo Molnar | 3da297a | 2009-06-07 17:39:02 +0200 | [diff] [blame] | 1592 | "be more verbose (show counter open errors, etc)"), |
Arnaldo Carvalho de Melo | b44308f | 2010-10-26 15:20:09 -0200 | [diff] [blame] | 1593 | OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1594 | OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 1595 | "per thread counts"), |
Peter Zijlstra | 5610032 | 2015-06-10 16:48:50 +0200 | [diff] [blame] | 1596 | OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"), |
Jiri Olsa | b6f35ed | 2016-08-01 20:02:35 +0200 | [diff] [blame] | 1597 | OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), |
Adrian Hunter | 3abebc5 | 2015-07-06 14:51:01 +0300 | [diff] [blame] | 1598 | OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, |
| 1599 | &record.opts.sample_time_set, |
| 1600 | "Record the sample timestamps"), |
Peter Zijlstra | 5610032 | 2015-06-10 16:48:50 +0200 | [diff] [blame] | 1601 | OPT_BOOLEAN('P', "period", &record.opts.period, "Record the sample period"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1602 | OPT_BOOLEAN('n', "no-samples", &record.opts.no_samples, |
Peter Zijlstra | 649c48a | 2009-06-24 21:12:48 +0200 | [diff] [blame] | 1603 | "don't sample"), |
Wang Nan | d2db9a9 | 2016-01-25 09:56:19 +0000 | [diff] [blame] | 1604 | OPT_BOOLEAN_SET('N', "no-buildid-cache", &record.no_buildid_cache, |
| 1605 | &record.no_buildid_cache_set, |
| 1606 | "do not update the buildid cache"), |
| 1607 | OPT_BOOLEAN_SET('B', "no-buildid", &record.no_buildid, |
| 1608 | &record.no_buildid_set, |
| 1609 | "do not collect buildids in perf.data"), |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1610 | OPT_CALLBACK('G', "cgroup", &record.evlist, "name", |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 1611 | "monitor event in cgroup name only", |
| 1612 | parse_cgroups), |
Arnaldo Carvalho de Melo | a6205a3 | 2014-01-14 17:58:12 -0300 | [diff] [blame] | 1613 | OPT_UINTEGER('D', "delay", &record.opts.initial_delay, |
Andi Kleen | 6619a53 | 2014-01-11 13:38:27 -0800 | [diff] [blame] | 1614 | "ms to wait before starting measurement after program start"), |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1615 | OPT_STRING('u', "uid", &record.opts.target.uid_str, "user", |
| 1616 | "user to profile"), |
Stephane Eranian | a5aabda | 2012-03-08 23:47:45 +0100 | [diff] [blame] | 1617 | |
| 1618 | OPT_CALLBACK_NOOPT('b', "branch-any", &record.opts.branch_stack, |
| 1619 | "branch any", "sample any taken branches", |
| 1620 | parse_branch_stack), |
| 1621 | |
| 1622 | OPT_CALLBACK('j', "branch-filter", &record.opts.branch_stack, |
| 1623 | "branch filter mask", "branch stack filter modes", |
Roberto Agostino Vitillo | bdfebd8 | 2012-02-09 23:21:02 +0100 | [diff] [blame] | 1624 | parse_branch_stack), |
Andi Kleen | 0548429 | 2013-01-24 16:10:29 +0100 | [diff] [blame] | 1625 | OPT_BOOLEAN('W', "weight", &record.opts.sample_weight, |
| 1626 | "sample by weight (on special events only)"), |
Andi Kleen | 475eeab | 2013-09-20 07:40:43 -0700 | [diff] [blame] | 1627 | OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction, |
| 1628 | "sample transaction flags (special events only)"), |
Adrian Hunter | 3aa5939 | 2013-11-15 15:52:29 +0200 | [diff] [blame] | 1629 | OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread, |
| 1630 | "use per-thread mmaps"), |
Stephane Eranian | bcc84ec | 2015-08-31 18:41:12 +0200 | [diff] [blame] | 1631 | OPT_CALLBACK_OPTARG('I', "intr-regs", &record.opts.sample_intr_regs, NULL, "any register", |
| 1632 | "sample selected machine registers on interrupt," |
| 1633 | " use -I ? to list register names", parse_regs), |
Andi Kleen | 85c273d | 2015-02-24 15:13:40 -0800 | [diff] [blame] | 1634 | OPT_BOOLEAN(0, "running-time", &record.opts.running_time, |
| 1635 | "Record running/enabled time of read (:S) events"), |
Peter Zijlstra | 814c8c3 | 2015-03-31 00:19:31 +0200 | [diff] [blame] | 1636 | OPT_CALLBACK('k', "clockid", &record.opts, |
| 1637 | "clockid", "clockid to use for events, see clock_gettime()", |
| 1638 | parse_clockid), |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1639 | OPT_STRING_OPTARG('S', "snapshot", &record.opts.auxtrace_snapshot_opts, |
| 1640 | "opts", "AUX area tracing Snapshot Mode", ""), |
Kan Liang | 9d9cad7 | 2015-06-17 09:51:11 -0400 | [diff] [blame] | 1641 | OPT_UINTEGER(0, "proc-map-timeout", &record.opts.proc_map_timeout, |
| 1642 | "per thread proc mmap processing timeout in ms"), |
Hari Bathini | f3b3614 | 2017-03-08 02:11:43 +0530 | [diff] [blame] | 1643 | OPT_BOOLEAN(0, "namespaces", &record.opts.record_namespaces, |
| 1644 | "Record namespaces events"), |
Adrian Hunter | b757bb0 | 2015-07-21 12:44:04 +0300 | [diff] [blame] | 1645 | OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events, |
| 1646 | "Record context switch events"), |
Jiri Olsa | 8572388 | 2016-02-15 09:34:31 +0100 | [diff] [blame] | 1647 | OPT_BOOLEAN_FLAG(0, "all-kernel", &record.opts.all_kernel, |
| 1648 | "Configure all used events to run in kernel space.", |
| 1649 | PARSE_OPT_EXCLUSIVE), |
| 1650 | OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, |
| 1651 | "Configure all used events to run in user space.", |
| 1652 | PARSE_OPT_EXCLUSIVE), |
Wang Nan | 71dc2326 | 2015-10-14 12:41:19 +0000 | [diff] [blame] | 1653 | OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", |
| 1654 | "clang binary to use for compiling BPF scriptlets"), |
| 1655 | OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", |
| 1656 | "options passed to clang when compiling BPF scriptlets"), |
He Kuang | 7efe0e0 | 2015-12-14 10:39:23 +0000 | [diff] [blame] | 1657 | OPT_STRING(0, "vmlinux", &symbol_conf.vmlinux_name, |
| 1658 | "file", "vmlinux pathname"), |
Namhyung Kim | 6156681 | 2016-01-11 22:37:09 +0900 | [diff] [blame] | 1659 | OPT_BOOLEAN(0, "buildid-all", &record.buildid_all, |
| 1660 | "Record build-id of all DSOs regardless of hits"), |
Wang Nan | ecfd7a9 | 2016-04-13 08:21:07 +0000 | [diff] [blame] | 1661 | OPT_BOOLEAN(0, "timestamp-filename", &record.timestamp_filename, |
| 1662 | "append timestamp to output filename"), |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1663 | OPT_STRING_OPTARG_SET(0, "switch-output", &record.switch_output.str, |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1664 | &record.switch_output.set, "signal,size,time", |
| 1665 | "Switch output when receive SIGUSR2 or cross size,time threshold", |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1666 | "signal"), |
Wang Nan | 0aab213 | 2016-06-16 08:02:41 +0000 | [diff] [blame] | 1667 | OPT_BOOLEAN(0, "dry-run", &dry_run, |
| 1668 | "Parse options then exit"), |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1669 | OPT_END() |
| 1670 | }; |
| 1671 | |
Namhyung Kim | e5b2c20 | 2014-10-23 00:15:46 +0900 | [diff] [blame] | 1672 | struct option *record_options = __record_options; |
| 1673 | |
Arnaldo Carvalho de Melo | b0ad8ea | 2017-03-27 11:47:20 -0300 | [diff] [blame] | 1674 | int cmd_record(int argc, const char **argv) |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1675 | { |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1676 | int err; |
Arnaldo Carvalho de Melo | 8c6f45a | 2013-12-19 14:38:03 -0300 | [diff] [blame] | 1677 | struct record *rec = &record; |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1678 | char errbuf[BUFSIZ]; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1679 | |
Wang Nan | 48e1cab | 2015-12-14 10:39:22 +0000 | [diff] [blame] | 1680 | #ifndef HAVE_LIBBPF_SUPPORT |
| 1681 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, "NO_LIBBPF=1", c) |
| 1682 | set_nobuild('\0', "clang-path", true); |
| 1683 | set_nobuild('\0', "clang-opt", true); |
| 1684 | # undef set_nobuild |
| 1685 | #endif |
| 1686 | |
He Kuang | 7efe0e0 | 2015-12-14 10:39:23 +0000 | [diff] [blame] | 1687 | #ifndef HAVE_BPF_PROLOGUE |
| 1688 | # if !defined (HAVE_DWARF_SUPPORT) |
| 1689 | # define REASON "NO_DWARF=1" |
| 1690 | # elif !defined (HAVE_LIBBPF_SUPPORT) |
| 1691 | # define REASON "NO_LIBBPF=1" |
| 1692 | # else |
| 1693 | # define REASON "this architecture doesn't support BPF prologue" |
| 1694 | # endif |
| 1695 | # define set_nobuild(s, l, c) set_option_nobuild(record_options, s, l, REASON, c) |
| 1696 | set_nobuild('\0', "vmlinux", true); |
| 1697 | # undef set_nobuild |
| 1698 | # undef REASON |
| 1699 | #endif |
| 1700 | |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 1701 | rec->evlist = perf_evlist__new(); |
| 1702 | if (rec->evlist == NULL) |
Arnaldo Carvalho de Melo | 361c99a | 2011-01-11 20:56:53 -0200 | [diff] [blame] | 1703 | return -ENOMEM; |
| 1704 | |
Arnaldo Carvalho de Melo | ecc4c56 | 2017-01-24 13:44:10 -0300 | [diff] [blame] | 1705 | err = perf_config(perf_record_config, rec); |
| 1706 | if (err) |
| 1707 | return err; |
Jiri Olsa | eb853e8 | 2014-02-03 12:44:42 +0100 | [diff] [blame] | 1708 | |
Tom Zanussi | bca647a | 2010-11-10 08:11:30 -0600 | [diff] [blame] | 1709 | argc = parse_options(argc, argv, record_options, record_usage, |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1710 | PARSE_OPT_STOP_AT_NON_OPTION); |
Namhyung Kim | 68ba323 | 2017-02-17 17:17:42 +0900 | [diff] [blame] | 1711 | if (quiet) |
| 1712 | perf_quiet_option(); |
Jiri Olsa | 483635a | 2017-02-17 18:00:18 +0100 | [diff] [blame] | 1713 | |
| 1714 | /* Make system wide (-a) the default target. */ |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1715 | if (!argc && target__none(&rec->opts.target)) |
Jiri Olsa | 483635a | 2017-02-17 18:00:18 +0100 | [diff] [blame] | 1716 | rec->opts.target.system_wide = true; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1717 | |
Namhyung Kim | bea0340 | 2012-04-26 14:15:15 +0900 | [diff] [blame] | 1718 | if (nr_cgroups && !rec->opts.target.system_wide) { |
Namhyung Kim | c711836 | 2015-10-25 00:49:27 +0900 | [diff] [blame] | 1719 | usage_with_options_msg(record_usage, record_options, |
| 1720 | "cgroup monitoring only available in system-wide mode"); |
| 1721 | |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 1722 | } |
Adrian Hunter | b757bb0 | 2015-07-21 12:44:04 +0300 | [diff] [blame] | 1723 | if (rec->opts.record_switch_events && |
| 1724 | !perf_can_record_switch_events()) { |
Namhyung Kim | c711836 | 2015-10-25 00:49:27 +0900 | [diff] [blame] | 1725 | ui__error("kernel does not support recording context switch events\n"); |
| 1726 | parse_options_usage(record_usage, record_options, "switch-events", 0); |
| 1727 | return -EINVAL; |
Adrian Hunter | b757bb0 | 2015-07-21 12:44:04 +0300 | [diff] [blame] | 1728 | } |
Stephane Eranian | 023695d | 2011-02-14 11:20:01 +0200 | [diff] [blame] | 1729 | |
Jiri Olsa | cb4e1eb | 2017-01-09 10:51:57 +0100 | [diff] [blame] | 1730 | if (switch_output_setup(rec)) { |
| 1731 | parse_options_usage(record_usage, record_options, "switch-output", 0); |
| 1732 | return -EINVAL; |
| 1733 | } |
| 1734 | |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1735 | if (rec->switch_output.time) { |
| 1736 | signal(SIGALRM, alarm_sig_handler); |
| 1737 | alarm(rec->switch_output.time); |
| 1738 | } |
| 1739 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1740 | if (!rec->itr) { |
| 1741 | rec->itr = auxtrace_record__init(rec->evlist, &err); |
| 1742 | if (err) |
Adrian Hunter | 5c01ad6 | 2016-09-23 17:38:37 +0300 | [diff] [blame] | 1743 | goto out; |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1744 | } |
| 1745 | |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1746 | err = auxtrace_parse_snapshot_options(rec->itr, &rec->opts, |
| 1747 | rec->opts.auxtrace_snapshot_opts); |
| 1748 | if (err) |
Adrian Hunter | 5c01ad6 | 2016-09-23 17:38:37 +0300 | [diff] [blame] | 1749 | goto out; |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1750 | |
Adrian Hunter | 1b36c03 | 2016-09-23 17:38:39 +0300 | [diff] [blame] | 1751 | /* |
| 1752 | * Allow aliases to facilitate the lookup of symbols for address |
| 1753 | * filters. Refer to auxtrace_parse_filters(). |
| 1754 | */ |
| 1755 | symbol_conf.allow_aliases = true; |
| 1756 | |
| 1757 | symbol__init(NULL); |
| 1758 | |
| 1759 | err = auxtrace_parse_filters(rec->evlist); |
| 1760 | if (err) |
| 1761 | goto out; |
| 1762 | |
Wang Nan | 0aab213 | 2016-06-16 08:02:41 +0000 | [diff] [blame] | 1763 | if (dry_run) |
Adrian Hunter | 5c01ad6 | 2016-09-23 17:38:37 +0300 | [diff] [blame] | 1764 | goto out; |
Wang Nan | 0aab213 | 2016-06-16 08:02:41 +0000 | [diff] [blame] | 1765 | |
Wang Nan | d788857 | 2016-04-08 15:07:24 +0000 | [diff] [blame] | 1766 | err = bpf__setup_stdout(rec->evlist); |
| 1767 | if (err) { |
| 1768 | bpf__strerror_setup_stdout(rec->evlist, err, errbuf, sizeof(errbuf)); |
| 1769 | pr_err("ERROR: Setup BPF stdout failed: %s\n", |
| 1770 | errbuf); |
Adrian Hunter | 5c01ad6 | 2016-09-23 17:38:37 +0300 | [diff] [blame] | 1771 | goto out; |
Wang Nan | d788857 | 2016-04-08 15:07:24 +0000 | [diff] [blame] | 1772 | } |
| 1773 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1774 | err = -ENOMEM; |
| 1775 | |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1776 | if (symbol_conf.kptr_restrict) |
Arnaldo Carvalho de Melo | 646aaea6 | 2011-05-27 11:00:41 -0300 | [diff] [blame] | 1777 | pr_warning( |
| 1778 | "WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted,\n" |
| 1779 | "check /proc/sys/kernel/kptr_restrict.\n\n" |
| 1780 | "Samples in kernel functions may not be resolved if a suitable vmlinux\n" |
| 1781 | "file is not found in the buildid cache or in the vmlinux path.\n\n" |
| 1782 | "Samples in kernel modules won't be resolved at all.\n\n" |
| 1783 | "If some relocation was applied (e.g. kexec) symbols may be misresolved\n" |
| 1784 | "even with a suitable vmlinux or kallsyms file.\n\n"); |
Arnaldo Carvalho de Melo | ec80fde | 2011-05-26 09:53:51 -0300 | [diff] [blame] | 1785 | |
Wang Nan | 0c1d46a | 2016-04-20 18:59:52 +0000 | [diff] [blame] | 1786 | if (rec->no_buildid_cache || rec->no_buildid) { |
Stephane Eranian | a1ac1d3 | 2010-06-17 11:39:01 +0200 | [diff] [blame] | 1787 | disable_buildid_cache(); |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1788 | } else if (rec->switch_output.enabled) { |
Wang Nan | 0c1d46a | 2016-04-20 18:59:52 +0000 | [diff] [blame] | 1789 | /* |
| 1790 | * In 'perf record --switch-output', disable buildid |
| 1791 | * generation by default to reduce data file switching |
| 1792 | * overhead. Still generate buildid if they are required |
| 1793 | * explicitly using |
| 1794 | * |
Jiri Olsa | 60437ac | 2017-01-03 09:19:56 +0100 | [diff] [blame] | 1795 | * perf record --switch-output --no-no-buildid \ |
Wang Nan | 0c1d46a | 2016-04-20 18:59:52 +0000 | [diff] [blame] | 1796 | * --no-no-buildid-cache |
| 1797 | * |
| 1798 | * Following code equals to: |
| 1799 | * |
| 1800 | * if ((rec->no_buildid || !rec->no_buildid_set) && |
| 1801 | * (rec->no_buildid_cache || !rec->no_buildid_cache_set)) |
| 1802 | * disable_buildid_cache(); |
| 1803 | */ |
| 1804 | bool disable = true; |
| 1805 | |
| 1806 | if (rec->no_buildid_set && !rec->no_buildid) |
| 1807 | disable = false; |
| 1808 | if (rec->no_buildid_cache_set && !rec->no_buildid_cache) |
| 1809 | disable = false; |
| 1810 | if (disable) { |
| 1811 | rec->no_buildid = true; |
| 1812 | rec->no_buildid_cache = true; |
| 1813 | disable_buildid_cache(); |
| 1814 | } |
| 1815 | } |
Arnaldo Carvalho de Melo | 655000e | 2009-12-15 20:04:40 -0200 | [diff] [blame] | 1816 | |
Wang Nan | 4ea648a | 2016-07-14 08:34:47 +0000 | [diff] [blame] | 1817 | if (record.opts.overwrite) |
| 1818 | record.opts.tail_synthesize = true; |
| 1819 | |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 1820 | if (rec->evlist->nr_entries == 0 && |
| 1821 | perf_evlist__add_default(rec->evlist) < 0) { |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 1822 | pr_err("Not enough memory for event selector list\n"); |
Adrian Hunter | 394c01e | 2016-09-23 17:38:36 +0300 | [diff] [blame] | 1823 | goto out; |
Peter Zijlstra | bbd36e5 | 2009-06-11 23:11:50 +0200 | [diff] [blame] | 1824 | } |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1825 | |
Adrian Hunter | 69e7e5b | 2013-11-18 11:55:57 +0200 | [diff] [blame] | 1826 | if (rec->opts.target.tid && !rec->opts.no_inherit_set) |
| 1827 | rec->opts.no_inherit = true; |
| 1828 | |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1829 | err = target__validate(&rec->opts.target); |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1830 | if (err) { |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1831 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1832 | ui__warning("%s", errbuf); |
| 1833 | } |
Namhyung Kim | 4bd0f2d | 2012-04-26 14:15:18 +0900 | [diff] [blame] | 1834 | |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1835 | err = target__parse_uid(&rec->opts.target); |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1836 | if (err) { |
| 1837 | int saved_errno = errno; |
| 1838 | |
Arnaldo Carvalho de Melo | 602ad87 | 2013-11-12 16:46:16 -0300 | [diff] [blame] | 1839 | target__strerror(&rec->opts.target, err, errbuf, BUFSIZ); |
Namhyung Kim | 3780f48 | 2012-05-29 13:22:57 +0900 | [diff] [blame] | 1840 | ui__error("%s", errbuf); |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1841 | |
| 1842 | err = -saved_errno; |
Adrian Hunter | 394c01e | 2016-09-23 17:38:36 +0300 | [diff] [blame] | 1843 | goto out; |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1844 | } |
Arnaldo Carvalho de Melo | 0d37aa3 | 2012-01-19 14:08:15 -0200 | [diff] [blame] | 1845 | |
Jiri Olsa | 23dc4f1 | 2016-12-12 11:35:43 +0100 | [diff] [blame] | 1846 | /* Enable ignoring missing threads when -u option is defined. */ |
| 1847 | rec->opts.ignore_missing_thread = rec->opts.target.uid != UINT_MAX; |
| 1848 | |
Namhyung Kim | 16ad2ff | 2012-05-07 14:09:02 +0900 | [diff] [blame] | 1849 | err = -ENOMEM; |
Arnaldo Carvalho de Melo | 3e2be2d | 2014-01-03 15:03:26 -0300 | [diff] [blame] | 1850 | if (perf_evlist__create_maps(rec->evlist, &rec->opts.target) < 0) |
Arnaldo Carvalho de Melo | dd7927f | 2011-01-12 14:28:51 -0200 | [diff] [blame] | 1851 | usage_with_options(record_usage, record_options); |
Arnaldo Carvalho de Melo | 69aad6f | 2011-01-03 16:39:04 -0200 | [diff] [blame] | 1852 | |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1853 | err = auxtrace_record__options(rec->itr, rec->evlist, &rec->opts); |
| 1854 | if (err) |
Adrian Hunter | 394c01e | 2016-09-23 17:38:36 +0300 | [diff] [blame] | 1855 | goto out; |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1856 | |
Namhyung Kim | 6156681 | 2016-01-11 22:37:09 +0900 | [diff] [blame] | 1857 | /* |
| 1858 | * We take all buildids when the file contains |
| 1859 | * AUX area tracing data because we do not decode the |
| 1860 | * trace because it would take too long. |
| 1861 | */ |
| 1862 | if (rec->opts.full_auxtrace) |
| 1863 | rec->buildid_all = true; |
| 1864 | |
Arnaldo Carvalho de Melo | b400679 | 2013-12-19 14:43:45 -0300 | [diff] [blame] | 1865 | if (record_opts__config(&rec->opts)) { |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1866 | err = -EINVAL; |
Adrian Hunter | 394c01e | 2016-09-23 17:38:36 +0300 | [diff] [blame] | 1867 | goto out; |
Mike Galbraith | 7e4ff9e | 2009-10-12 07:56:03 +0200 | [diff] [blame] | 1868 | } |
| 1869 | |
Arnaldo Carvalho de Melo | d20deb6 | 2011-11-25 08:19:45 -0200 | [diff] [blame] | 1870 | err = __cmd_record(&record, argc, argv); |
Adrian Hunter | 394c01e | 2016-09-23 17:38:36 +0300 | [diff] [blame] | 1871 | out: |
Namhyung Kim | 4560471 | 2014-05-12 09:47:24 +0900 | [diff] [blame] | 1872 | perf_evlist__delete(rec->evlist); |
Arnaldo Carvalho de Melo | d65a458 | 2010-07-30 18:31:28 -0300 | [diff] [blame] | 1873 | symbol__exit(); |
Adrian Hunter | ef149c2 | 2015-04-09 18:53:45 +0300 | [diff] [blame] | 1874 | auxtrace_record__free(rec->itr); |
Arnaldo Carvalho de Melo | 39d17da | 2010-07-29 14:08:55 -0300 | [diff] [blame] | 1875 | return err; |
Ingo Molnar | 0e9b20b | 2009-05-26 09:17:18 +0200 | [diff] [blame] | 1876 | } |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1877 | |
| 1878 | static void snapshot_sig_handler(int sig __maybe_unused) |
| 1879 | { |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1880 | struct record *rec = &record; |
| 1881 | |
Wang Nan | 5f9cf59 | 2016-04-20 18:59:49 +0000 | [diff] [blame] | 1882 | if (trigger_is_ready(&auxtrace_snapshot_trigger)) { |
| 1883 | trigger_hit(&auxtrace_snapshot_trigger); |
| 1884 | auxtrace_record__snapshot_started = 1; |
| 1885 | if (auxtrace_record__snapshot_start(record.itr)) |
| 1886 | trigger_error(&auxtrace_snapshot_trigger); |
| 1887 | } |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1888 | |
Jiri Olsa | dc0c612 | 2017-01-09 10:51:58 +0100 | [diff] [blame] | 1889 | if (switch_output_signal(rec)) |
Wang Nan | 3c1cb7e | 2016-04-20 18:59:50 +0000 | [diff] [blame] | 1890 | trigger_hit(&switch_output_trigger); |
Adrian Hunter | 2dd6d8a | 2015-04-30 17:37:32 +0300 | [diff] [blame] | 1891 | } |
Jiri Olsa | bfacbe3 | 2017-01-09 10:52:00 +0100 | [diff] [blame] | 1892 | |
| 1893 | static void alarm_sig_handler(int sig __maybe_unused) |
| 1894 | { |
| 1895 | struct record *rec = &record; |
| 1896 | |
| 1897 | if (switch_output_time(rec)) |
| 1898 | trigger_hit(&switch_output_trigger); |
| 1899 | } |