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Ingo Molnar
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May 3, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: feef47d0cb530e8419dfa0b48141b538b89b1b1a | ||
| refs/heads/master: 0806ebd974590ab24ab357d5d87db744e56bfe13 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,228 @@ | ||
| /* | ||
| * builtin-inject.c | ||
| * | ||
| * Builtin inject command: Examine the live mode (stdin) event stream | ||
| * and repipe it to stdout while optionally injecting additional | ||
| * events into it. | ||
| */ | ||
| #include "builtin.h" | ||
|
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| #include "perf.h" | ||
| #include "util/session.h" | ||
| #include "util/debug.h" | ||
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| #include "util/parse-options.h" | ||
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| static char const *input_name = "-"; | ||
| static bool inject_build_ids; | ||
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| static int event__repipe(event_t *event __used, | ||
| struct perf_session *session __used) | ||
| { | ||
| uint32_t size; | ||
| void *buf = event; | ||
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| size = event->header.size; | ||
|
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| while (size) { | ||
| int ret = write(STDOUT_FILENO, buf, size); | ||
| if (ret < 0) | ||
| return -errno; | ||
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| size -= ret; | ||
| buf += ret; | ||
| } | ||
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| return 0; | ||
| } | ||
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| static int event__repipe_mmap(event_t *self, struct perf_session *session) | ||
| { | ||
| int err; | ||
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| err = event__process_mmap(self, session); | ||
| event__repipe(self, session); | ||
|
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| return err; | ||
| } | ||
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| static int event__repipe_task(event_t *self, struct perf_session *session) | ||
| { | ||
| int err; | ||
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| err = event__process_task(self, session); | ||
| event__repipe(self, session); | ||
|
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| return err; | ||
| } | ||
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| static int event__repipe_tracing_data(event_t *self, | ||
| struct perf_session *session) | ||
| { | ||
| int err; | ||
|
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| event__repipe(self, session); | ||
| err = event__process_tracing_data(self, session); | ||
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| return err; | ||
| } | ||
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| static int dso__read_build_id(struct dso *self) | ||
| { | ||
| if (self->has_build_id) | ||
| return 0; | ||
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| if (filename__read_build_id(self->long_name, self->build_id, | ||
| sizeof(self->build_id)) > 0) { | ||
| self->has_build_id = true; | ||
| return 0; | ||
| } | ||
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| return -1; | ||
| } | ||
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| static int dso__inject_build_id(struct dso *self, struct perf_session *session) | ||
| { | ||
| u16 misc = PERF_RECORD_MISC_USER; | ||
| struct machine *machine; | ||
| int err; | ||
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| if (dso__read_build_id(self) < 0) { | ||
| pr_debug("no build_id found for %s\n", self->long_name); | ||
| return -1; | ||
| } | ||
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| machine = perf_session__find_host_machine(session); | ||
| if (machine == NULL) { | ||
| pr_err("Can't find machine for session\n"); | ||
| return -1; | ||
| } | ||
|
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| if (self->kernel) | ||
| misc = PERF_RECORD_MISC_KERNEL; | ||
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| err = event__synthesize_build_id(self, misc, event__repipe, | ||
| machine, session); | ||
| if (err) { | ||
| pr_err("Can't synthesize build_id event for %s\n", self->long_name); | ||
| return -1; | ||
| } | ||
|
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| return 0; | ||
| } | ||
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| static int event__inject_buildid(event_t *event, struct perf_session *session) | ||
| { | ||
| struct addr_location al; | ||
| struct thread *thread; | ||
| u8 cpumode; | ||
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| cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; | ||
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| thread = perf_session__findnew(session, event->ip.pid); | ||
| if (thread == NULL) { | ||
| pr_err("problem processing %d event, skipping it.\n", | ||
| event->header.type); | ||
| goto repipe; | ||
| } | ||
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| thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, | ||
| event->ip.pid, event->ip.ip, &al); | ||
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| if (al.map != NULL) { | ||
| if (!al.map->dso->hit) { | ||
| al.map->dso->hit = 1; | ||
| if (map__load(al.map, NULL) >= 0) { | ||
| dso__inject_build_id(al.map->dso, session); | ||
| /* | ||
| * If this fails, too bad, let the other side | ||
| * account this as unresolved. | ||
| */ | ||
| } else | ||
| pr_warning("no symbols found in %s, maybe " | ||
| "install a debug package?\n", | ||
| al.map->dso->long_name); | ||
| } | ||
| } | ||
|
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| repipe: | ||
| event__repipe(event, session); | ||
| return 0; | ||
| } | ||
|
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| struct perf_event_ops inject_ops = { | ||
| .sample = event__repipe, | ||
| .mmap = event__repipe, | ||
| .comm = event__repipe, | ||
| .fork = event__repipe, | ||
| .exit = event__repipe, | ||
| .lost = event__repipe, | ||
| .read = event__repipe, | ||
| .throttle = event__repipe, | ||
| .unthrottle = event__repipe, | ||
| .attr = event__repipe, | ||
| .event_type = event__repipe, | ||
| .tracing_data = event__repipe, | ||
| .build_id = event__repipe, | ||
| }; | ||
|
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| extern volatile int session_done; | ||
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| static void sig_handler(int sig __attribute__((__unused__))) | ||
| { | ||
| session_done = 1; | ||
| } | ||
|
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| static int __cmd_inject(void) | ||
| { | ||
| struct perf_session *session; | ||
| int ret = -EINVAL; | ||
|
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| signal(SIGINT, sig_handler); | ||
|
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| if (inject_build_ids) { | ||
| inject_ops.sample = event__inject_buildid; | ||
| inject_ops.mmap = event__repipe_mmap; | ||
| inject_ops.fork = event__repipe_task; | ||
| inject_ops.tracing_data = event__repipe_tracing_data; | ||
| } | ||
|
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| session = perf_session__new(input_name, O_RDONLY, false, true); | ||
| if (session == NULL) | ||
| return -ENOMEM; | ||
|
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| ret = perf_session__process_events(session, &inject_ops); | ||
|
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| perf_session__delete(session); | ||
|
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| return ret; | ||
| } | ||
|
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| static const char * const report_usage[] = { | ||
| "perf inject [<options>]", | ||
| NULL | ||
| }; | ||
|
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| static const struct option options[] = { | ||
| OPT_BOOLEAN('b', "inject build-ids", &inject_build_ids, | ||
| "Inject build-ids into the output stream"), | ||
| OPT_INCR('v', "verbose", &verbose, | ||
| "be more verbose (show build ids, etc)"), | ||
| OPT_END() | ||
| }; | ||
|
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| int cmd_inject(int argc, const char **argv, const char *prefix __used) | ||
| { | ||
| argc = parse_options(argc, argv, options, report_usage, 0); | ||
|
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| /* | ||
| * Any (unrecognized) arguments left? | ||
| */ | ||
| if (argc) | ||
| usage_with_options(report_usage, options); | ||
|
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| if (symbol__init() < 0) | ||
| return -1; | ||
|
|
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| return __cmd_inject(); | ||
| } |
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