Commit | Line | Data |
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454c407e TZ |
1 | /* |
2 | * builtin-inject.c | |
3 | * | |
4 | * Builtin inject command: Examine the live mode (stdin) event stream | |
5 | * and repipe it to stdout while optionally injecting additional | |
6 | * events into it. | |
7 | */ | |
8 | #include "builtin.h" | |
9 | ||
10 | #include "perf.h" | |
11 | #include "util/session.h" | |
45694aa7 | 12 | #include "util/tool.h" |
454c407e TZ |
13 | #include "util/debug.h" |
14 | ||
15 | #include "util/parse-options.h" | |
16 | ||
5ded57ac ACM |
17 | struct perf_inject { |
18 | struct perf_tool tool; | |
19 | bool build_ids; | |
e558a5bd AV |
20 | const char *input_name; |
21 | int pipe_output, | |
22 | output; | |
23 | u64 bytes_written; | |
5ded57ac | 24 | }; |
454c407e | 25 | |
e558a5bd | 26 | static int perf_event__repipe_synth(struct perf_tool *tool, |
d20deb64 | 27 | union perf_event *event, |
1d037ca1 | 28 | struct machine *machine __maybe_unused) |
454c407e | 29 | { |
e558a5bd | 30 | struct perf_inject *inject = container_of(tool, struct perf_inject, tool); |
454c407e TZ |
31 | uint32_t size; |
32 | void *buf = event; | |
33 | ||
34 | size = event->header.size; | |
35 | ||
36 | while (size) { | |
e558a5bd | 37 | int ret = write(inject->output, buf, size); |
454c407e TZ |
38 | if (ret < 0) |
39 | return -errno; | |
40 | ||
41 | size -= ret; | |
42 | buf += ret; | |
e558a5bd | 43 | inject->bytes_written += ret; |
454c407e TZ |
44 | } |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
45694aa7 | 49 | static int perf_event__repipe_op2_synth(struct perf_tool *tool, |
743eb868 | 50 | union perf_event *event, |
1d037ca1 IT |
51 | struct perf_session *session |
52 | __maybe_unused) | |
743eb868 | 53 | { |
45694aa7 | 54 | return perf_event__repipe_synth(tool, event, NULL); |
743eb868 ACM |
55 | } |
56 | ||
45694aa7 | 57 | static int perf_event__repipe_event_type_synth(struct perf_tool *tool, |
743eb868 ACM |
58 | union perf_event *event) |
59 | { | |
45694aa7 | 60 | return perf_event__repipe_synth(tool, event, NULL); |
743eb868 ACM |
61 | } |
62 | ||
d20deb64 | 63 | static int perf_event__repipe_tracing_data_synth(union perf_event *event, |
1d037ca1 IT |
64 | struct perf_session *session |
65 | __maybe_unused) | |
d20deb64 | 66 | { |
743eb868 | 67 | return perf_event__repipe_synth(NULL, event, NULL); |
d20deb64 ACM |
68 | } |
69 | ||
10d0f086 | 70 | static int perf_event__repipe_attr(union perf_event *event, |
1d037ca1 | 71 | struct perf_evlist **pevlist __maybe_unused) |
10d0f086 | 72 | { |
1a1ed1ba SE |
73 | int ret; |
74 | ret = perf_event__process_attr(event, pevlist); | |
75 | if (ret) | |
76 | return ret; | |
77 | ||
d20deb64 | 78 | return perf_event__repipe_synth(NULL, event, NULL); |
10d0f086 ACM |
79 | } |
80 | ||
45694aa7 | 81 | static int perf_event__repipe(struct perf_tool *tool, |
d20deb64 | 82 | union perf_event *event, |
1d037ca1 | 83 | struct perf_sample *sample __maybe_unused, |
743eb868 | 84 | struct machine *machine) |
640c03ce | 85 | { |
45694aa7 | 86 | return perf_event__repipe_synth(tool, event, machine); |
640c03ce ACM |
87 | } |
88 | ||
45694aa7 | 89 | static int perf_event__repipe_sample(struct perf_tool *tool, |
d20deb64 | 90 | union perf_event *event, |
1d037ca1 IT |
91 | struct perf_sample *sample __maybe_unused, |
92 | struct perf_evsel *evsel __maybe_unused, | |
743eb868 | 93 | struct machine *machine) |
9e69c210 | 94 | { |
45694aa7 | 95 | return perf_event__repipe_synth(tool, event, machine); |
9e69c210 ACM |
96 | } |
97 | ||
45694aa7 | 98 | static int perf_event__repipe_mmap(struct perf_tool *tool, |
d20deb64 | 99 | union perf_event *event, |
8115d60c | 100 | struct perf_sample *sample, |
743eb868 | 101 | struct machine *machine) |
454c407e TZ |
102 | { |
103 | int err; | |
104 | ||
45694aa7 ACM |
105 | err = perf_event__process_mmap(tool, event, sample, machine); |
106 | perf_event__repipe(tool, event, sample, machine); | |
454c407e TZ |
107 | |
108 | return err; | |
109 | } | |
110 | ||
f62d3f0f | 111 | static int perf_event__repipe_fork(struct perf_tool *tool, |
d20deb64 | 112 | union perf_event *event, |
8115d60c | 113 | struct perf_sample *sample, |
743eb868 | 114 | struct machine *machine) |
454c407e TZ |
115 | { |
116 | int err; | |
117 | ||
f62d3f0f | 118 | err = perf_event__process_fork(tool, event, sample, machine); |
45694aa7 | 119 | perf_event__repipe(tool, event, sample, machine); |
454c407e TZ |
120 | |
121 | return err; | |
122 | } | |
123 | ||
8115d60c ACM |
124 | static int perf_event__repipe_tracing_data(union perf_event *event, |
125 | struct perf_session *session) | |
454c407e TZ |
126 | { |
127 | int err; | |
128 | ||
743eb868 | 129 | perf_event__repipe_synth(NULL, event, NULL); |
8115d60c | 130 | err = perf_event__process_tracing_data(event, session); |
454c407e TZ |
131 | |
132 | return err; | |
133 | } | |
134 | ||
090f7204 | 135 | static int dso__read_build_id(struct dso *self) |
454c407e | 136 | { |
090f7204 ACM |
137 | if (self->has_build_id) |
138 | return 0; | |
454c407e | 139 | |
090f7204 ACM |
140 | if (filename__read_build_id(self->long_name, self->build_id, |
141 | sizeof(self->build_id)) > 0) { | |
142 | self->has_build_id = true; | |
143 | return 0; | |
144 | } | |
454c407e | 145 | |
090f7204 ACM |
146 | return -1; |
147 | } | |
454c407e | 148 | |
45694aa7 | 149 | static int dso__inject_build_id(struct dso *self, struct perf_tool *tool, |
743eb868 | 150 | struct machine *machine) |
090f7204 ACM |
151 | { |
152 | u16 misc = PERF_RECORD_MISC_USER; | |
090f7204 | 153 | int err; |
454c407e | 154 | |
090f7204 ACM |
155 | if (dso__read_build_id(self) < 0) { |
156 | pr_debug("no build_id found for %s\n", self->long_name); | |
157 | return -1; | |
158 | } | |
454c407e | 159 | |
090f7204 ACM |
160 | if (self->kernel) |
161 | misc = PERF_RECORD_MISC_KERNEL; | |
454c407e | 162 | |
45694aa7 | 163 | err = perf_event__synthesize_build_id(tool, self, misc, perf_event__repipe, |
743eb868 | 164 | machine); |
090f7204 ACM |
165 | if (err) { |
166 | pr_err("Can't synthesize build_id event for %s\n", self->long_name); | |
454c407e TZ |
167 | return -1; |
168 | } | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
45694aa7 | 173 | static int perf_event__inject_buildid(struct perf_tool *tool, |
d20deb64 | 174 | union perf_event *event, |
8115d60c | 175 | struct perf_sample *sample, |
1d037ca1 | 176 | struct perf_evsel *evsel __maybe_unused, |
743eb868 | 177 | struct machine *machine) |
454c407e TZ |
178 | { |
179 | struct addr_location al; | |
180 | struct thread *thread; | |
181 | u8 cpumode; | |
454c407e TZ |
182 | |
183 | cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | |
184 | ||
743eb868 | 185 | thread = machine__findnew_thread(machine, event->ip.pid); |
454c407e TZ |
186 | if (thread == NULL) { |
187 | pr_err("problem processing %d event, skipping it.\n", | |
188 | event->header.type); | |
454c407e TZ |
189 | goto repipe; |
190 | } | |
191 | ||
743eb868 ACM |
192 | thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION, |
193 | event->ip.ip, &al); | |
454c407e TZ |
194 | |
195 | if (al.map != NULL) { | |
196 | if (!al.map->dso->hit) { | |
197 | al.map->dso->hit = 1; | |
090f7204 | 198 | if (map__load(al.map, NULL) >= 0) { |
45694aa7 | 199 | dso__inject_build_id(al.map->dso, tool, machine); |
090f7204 ACM |
200 | /* |
201 | * If this fails, too bad, let the other side | |
202 | * account this as unresolved. | |
203 | */ | |
393be2e3 | 204 | } else { |
29a0fc9b | 205 | #ifdef LIBELF_SUPPORT |
454c407e TZ |
206 | pr_warning("no symbols found in %s, maybe " |
207 | "install a debug package?\n", | |
208 | al.map->dso->long_name); | |
393be2e3 NK |
209 | #endif |
210 | } | |
454c407e TZ |
211 | } |
212 | } | |
213 | ||
214 | repipe: | |
45694aa7 | 215 | perf_event__repipe(tool, event, sample, machine); |
090f7204 | 216 | return 0; |
454c407e TZ |
217 | } |
218 | ||
454c407e TZ |
219 | extern volatile int session_done; |
220 | ||
1d037ca1 | 221 | static void sig_handler(int sig __maybe_unused) |
454c407e TZ |
222 | { |
223 | session_done = 1; | |
224 | } | |
225 | ||
5ded57ac | 226 | static int __cmd_inject(struct perf_inject *inject) |
454c407e TZ |
227 | { |
228 | struct perf_session *session; | |
229 | int ret = -EINVAL; | |
230 | ||
231 | signal(SIGINT, sig_handler); | |
232 | ||
5ded57ac ACM |
233 | if (inject->build_ids) { |
234 | inject->tool.sample = perf_event__inject_buildid; | |
235 | inject->tool.mmap = perf_event__repipe_mmap; | |
f62d3f0f | 236 | inject->tool.fork = perf_event__repipe_fork; |
5ded57ac | 237 | inject->tool.tracing_data = perf_event__repipe_tracing_data; |
454c407e TZ |
238 | } |
239 | ||
e558a5bd | 240 | session = perf_session__new(inject->input_name, O_RDONLY, false, true, &inject->tool); |
454c407e TZ |
241 | if (session == NULL) |
242 | return -ENOMEM; | |
243 | ||
e558a5bd AV |
244 | if (!inject->pipe_output) |
245 | lseek(inject->output, session->header.data_offset, SEEK_SET); | |
246 | ||
5ded57ac | 247 | ret = perf_session__process_events(session, &inject->tool); |
454c407e | 248 | |
e558a5bd AV |
249 | if (!inject->pipe_output) { |
250 | session->header.data_size = inject->bytes_written; | |
251 | perf_session__write_header(session, session->evlist, inject->output, true); | |
252 | } | |
253 | ||
454c407e TZ |
254 | perf_session__delete(session); |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
1d037ca1 | 259 | int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused) |
454c407e | 260 | { |
5ded57ac ACM |
261 | struct perf_inject inject = { |
262 | .tool = { | |
263 | .sample = perf_event__repipe_sample, | |
264 | .mmap = perf_event__repipe, | |
265 | .comm = perf_event__repipe, | |
266 | .fork = perf_event__repipe, | |
267 | .exit = perf_event__repipe, | |
268 | .lost = perf_event__repipe, | |
269 | .read = perf_event__repipe_sample, | |
270 | .throttle = perf_event__repipe, | |
271 | .unthrottle = perf_event__repipe, | |
272 | .attr = perf_event__repipe_attr, | |
273 | .event_type = perf_event__repipe_event_type_synth, | |
274 | .tracing_data = perf_event__repipe_tracing_data_synth, | |
275 | .build_id = perf_event__repipe_op2_synth, | |
276 | }, | |
e558a5bd | 277 | .input_name = "-", |
5ded57ac | 278 | }; |
e558a5bd | 279 | const char *output_name = "-"; |
5ded57ac ACM |
280 | const struct option options[] = { |
281 | OPT_BOOLEAN('b', "build-ids", &inject.build_ids, | |
282 | "Inject build-ids into the output stream"), | |
e558a5bd AV |
283 | OPT_STRING('i', "input", &inject.input_name, "file", |
284 | "input file name"), | |
285 | OPT_STRING('o', "output", &output_name, "file", | |
286 | "output file name"), | |
5ded57ac ACM |
287 | OPT_INCR('v', "verbose", &verbose, |
288 | "be more verbose (show build ids, etc)"), | |
289 | OPT_END() | |
290 | }; | |
002439e8 ACM |
291 | const char * const inject_usage[] = { |
292 | "perf inject [<options>]", | |
293 | NULL | |
294 | }; | |
5ded57ac | 295 | |
002439e8 | 296 | argc = parse_options(argc, argv, options, inject_usage, 0); |
454c407e TZ |
297 | |
298 | /* | |
299 | * Any (unrecognized) arguments left? | |
300 | */ | |
301 | if (argc) | |
002439e8 | 302 | usage_with_options(inject_usage, options); |
454c407e | 303 | |
e558a5bd AV |
304 | if (!strcmp(output_name, "-")) { |
305 | inject.pipe_output = 1; | |
306 | inject.output = STDOUT_FILENO; | |
307 | } else { | |
308 | inject.output = open(output_name, O_CREAT | O_WRONLY | O_TRUNC, | |
309 | S_IRUSR | S_IWUSR); | |
310 | if (inject.output < 0) { | |
311 | perror("failed to create output file"); | |
312 | return -1; | |
313 | } | |
314 | } | |
315 | ||
454c407e TZ |
316 | if (symbol__init() < 0) |
317 | return -1; | |
318 | ||
5ded57ac | 319 | return __cmd_inject(&inject); |
454c407e | 320 | } |