2010-05-01 06:41:20 +00:00
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/*
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* builtin-inject.c
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*
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* Builtin inject command: Examine the live mode (stdin) event stream
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* and repipe it to stdout while optionally injecting additional
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* events into it.
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*/
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#include "builtin.h"
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#include "perf.h"
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#include "util/session.h"
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#include "util/debug.h"
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#include "util/parse-options.h"
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static char const *input_name = "-";
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static bool inject_build_ids;
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2011-01-29 16:01:45 +00:00
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static int perf_event__repipe_synth(union perf_event *event,
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struct perf_session *session __used)
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2010-05-01 06:41:20 +00:00
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{
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uint32_t size;
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void *buf = event;
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size = event->header.size;
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while (size) {
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int ret = write(STDOUT_FILENO, buf, size);
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if (ret < 0)
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return -errno;
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size -= ret;
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buf += ret;
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}
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return 0;
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}
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2011-01-29 16:01:45 +00:00
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static int perf_event__repipe(union perf_event *event,
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struct perf_sample *sample __used,
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struct perf_session *session)
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perf session: Parse sample earlier
At perf_session__process_event, so that we reduce the number of lines in eache
tool sample processing routine that now receives a sample_data pointer already
parsed.
This will also be useful in the next patch, where we'll allow sample the
identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu,
timestamp) just after before every event.
Also validate callchains in perf_session__process_event, i.e. as early as
possible, and keep a counter of the number of events discarded due to invalid
callchains, warning the user about it if it happens.
There is an assumption that was kept that all events have the same sample_type,
that will be dealt with in the future, when this preexisting limitation will be
removed.
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 16:10:21 +00:00
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{
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2011-01-29 16:01:45 +00:00
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return perf_event__repipe_synth(event, session);
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perf session: Parse sample earlier
At perf_session__process_event, so that we reduce the number of lines in eache
tool sample processing routine that now receives a sample_data pointer already
parsed.
This will also be useful in the next patch, where we'll allow sample the
identity fields in MMAP, FORK, EXIT, etc, when it will be possible to see (cpu,
timestamp) just after before every event.
Also validate callchains in perf_session__process_event, i.e. as early as
possible, and keep a counter of the number of events discarded due to invalid
callchains, warning the user about it if it happens.
There is an assumption that was kept that all events have the same sample_type,
that will be dealt with in the future, when this preexisting limitation will be
removed.
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1291318772-30880-4-git-send-email-acme@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2010-12-02 16:10:21 +00:00
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}
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2011-03-15 18:44:01 +00:00
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static int perf_event__repipe_sample(union perf_event *event,
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struct perf_sample *sample __used,
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struct perf_evsel *evsel __used,
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struct perf_session *session)
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{
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return perf_event__repipe_synth(event, session);
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}
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2011-01-29 16:01:45 +00:00
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static int perf_event__repipe_mmap(union perf_event *event,
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struct perf_sample *sample,
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struct perf_session *session)
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2010-05-01 06:41:20 +00:00
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{
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int err;
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2011-01-29 16:01:45 +00:00
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err = perf_event__process_mmap(event, sample, session);
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perf_event__repipe(event, sample, session);
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2010-05-01 06:41:20 +00:00
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return err;
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}
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2011-01-29 16:01:45 +00:00
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static int perf_event__repipe_task(union perf_event *event,
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struct perf_sample *sample,
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struct perf_session *session)
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2010-05-01 06:41:20 +00:00
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{
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int err;
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2011-01-29 16:01:45 +00:00
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err = perf_event__process_task(event, sample, session);
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perf_event__repipe(event, sample, session);
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2010-05-01 06:41:20 +00:00
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return err;
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}
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2011-01-29 16:01:45 +00:00
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static int perf_event__repipe_tracing_data(union perf_event *event,
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struct perf_session *session)
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2010-05-01 06:41:20 +00:00
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{
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int err;
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2011-01-29 16:01:45 +00:00
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perf_event__repipe_synth(event, session);
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err = perf_event__process_tracing_data(event, session);
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2010-05-01 06:41:20 +00:00
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return err;
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}
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2010-05-02 22:46:36 +00:00
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static int dso__read_build_id(struct dso *self)
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2010-05-01 06:41:20 +00:00
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{
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2010-05-02 22:46:36 +00:00
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if (self->has_build_id)
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return 0;
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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if (filename__read_build_id(self->long_name, self->build_id,
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sizeof(self->build_id)) > 0) {
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self->has_build_id = true;
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return 0;
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}
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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return -1;
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}
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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static int dso__inject_build_id(struct dso *self, struct perf_session *session)
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{
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u16 misc = PERF_RECORD_MISC_USER;
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struct machine *machine;
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int err;
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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if (dso__read_build_id(self) < 0) {
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pr_debug("no build_id found for %s\n", self->long_name);
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return -1;
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}
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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machine = perf_session__find_host_machine(session);
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if (machine == NULL) {
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pr_err("Can't find machine for session\n");
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return -1;
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}
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2010-05-01 06:41:20 +00:00
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2010-05-02 22:46:36 +00:00
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if (self->kernel)
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misc = PERF_RECORD_MISC_KERNEL;
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2010-05-01 06:41:20 +00:00
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2011-01-29 16:01:45 +00:00
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err = perf_event__synthesize_build_id(self, misc, perf_event__repipe,
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machine, session);
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2010-05-02 22:46:36 +00:00
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if (err) {
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pr_err("Can't synthesize build_id event for %s\n", self->long_name);
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2010-05-01 06:41:20 +00:00
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return -1;
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}
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return 0;
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}
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2011-01-29 16:01:45 +00:00
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static int perf_event__inject_buildid(union perf_event *event,
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struct perf_sample *sample,
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2011-03-15 18:44:01 +00:00
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struct perf_evsel *evsel __used,
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2011-01-29 16:01:45 +00:00
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struct perf_session *session)
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2010-05-01 06:41:20 +00:00
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{
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struct addr_location al;
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struct thread *thread;
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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);
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if (thread == NULL) {
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pr_err("problem processing %d event, skipping it.\n",
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event->header.type);
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goto repipe;
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}
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thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
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event->ip.pid, event->ip.ip, &al);
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if (al.map != NULL) {
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if (!al.map->dso->hit) {
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al.map->dso->hit = 1;
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2010-05-02 22:46:36 +00:00
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if (map__load(al.map, NULL) >= 0) {
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dso__inject_build_id(al.map->dso, session);
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/*
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* If this fails, too bad, let the other side
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* account this as unresolved.
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*/
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} else
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2010-05-01 06:41:20 +00:00
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pr_warning("no symbols found in %s, maybe "
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"install a debug package?\n",
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al.map->dso->long_name);
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}
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}
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repipe:
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2011-01-29 16:01:45 +00:00
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perf_event__repipe(event, sample, session);
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2010-05-02 22:46:36 +00:00
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return 0;
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2010-05-01 06:41:20 +00:00
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}
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struct perf_event_ops inject_ops = {
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2011-03-15 18:44:01 +00:00
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.sample = perf_event__repipe_sample,
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2011-01-29 16:01:45 +00:00
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.mmap = perf_event__repipe,
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.comm = perf_event__repipe,
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.fork = perf_event__repipe,
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.exit = perf_event__repipe,
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.lost = perf_event__repipe,
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.read = perf_event__repipe,
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.throttle = perf_event__repipe,
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.unthrottle = perf_event__repipe,
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.attr = perf_event__repipe_synth,
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.event_type = perf_event__repipe_synth,
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.tracing_data = perf_event__repipe_synth,
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.build_id = perf_event__repipe_synth,
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2010-05-01 06:41:20 +00:00
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};
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extern volatile int session_done;
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static void sig_handler(int sig __attribute__((__unused__)))
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{
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session_done = 1;
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}
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static int __cmd_inject(void)
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{
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struct perf_session *session;
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int ret = -EINVAL;
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signal(SIGINT, sig_handler);
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if (inject_build_ids) {
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2011-01-29 16:01:45 +00:00
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inject_ops.sample = perf_event__inject_buildid;
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inject_ops.mmap = perf_event__repipe_mmap;
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inject_ops.fork = perf_event__repipe_task;
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inject_ops.tracing_data = perf_event__repipe_tracing_data;
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2010-05-01 06:41:20 +00:00
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}
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2010-12-10 03:09:16 +00:00
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session = perf_session__new(input_name, O_RDONLY, false, true, &inject_ops);
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2010-05-01 06:41:20 +00:00
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if (session == NULL)
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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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}
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static const char * const report_usage[] = {
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"perf inject [<options>]",
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NULL
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};
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static const struct option options[] = {
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2010-05-04 13:48:22 +00:00
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OPT_BOOLEAN('b', "build-ids", &inject_build_ids,
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2010-05-01 06:41:20 +00:00
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"Inject build-ids into the output stream"),
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OPT_INCR('v', "verbose", &verbose,
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"be more verbose (show build ids, etc)"),
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OPT_END()
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};
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int cmd_inject(int argc, const char **argv, const char *prefix __used)
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{
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argc = parse_options(argc, argv, options, report_usage, 0);
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/*
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* Any (unrecognized) arguments left?
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*/
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if (argc)
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usage_with_options(report_usage, options);
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if (symbol__init() < 0)
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return -1;
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return __cmd_inject();
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}
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