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linux-next/tools/perf/builtin-inject.c
Stephane Eranian 9b07e27f88 perf inject: Add jitdump mmap injection support
This patch adds a --jit/-j option to perf inject.

This options injects MMAP records into the perf.data file to cover the
jitted code mmaps. It also emits ELF images for each function in the
jidump file.  Those images are created where the jitdump file is.  The
MMAP records point to that location as well.

Typical flow:

  $ perf record -k mono -- java -agentpath:libpjvmti.so java_class
  $ perf inject --jit -i perf.data -o perf.data.jitted
  $ perf report -i perf.data.jitted

Note that jitdump.h support is not limited to Java, it works with any
jitted environment modified to emit the jitdump file format, include
those where code can be jitted multiple times and moved around.

The jitdump.h format is adapted from the Oprofile project.

The genelf.c (ELF binary generation) depends on MD5 hash encoding for
the buildid. To enable this, libssl-dev must be installed. If not, then
genelf.c defaults to using urandom to generate the buildid, which is not
ideal.  The Makefile auto-detects the presence on libssl-dev.

This version mmaps the jitdump file to create a marker MMAP record in
the perf.data file. The marker is used to detect jitdump and cause perf
inject to inject the jitted mmaps and generate ELF images for jitted
functions.

In V8, the following fixes and changes were made among other things:

  -  the jidump header format include a new flags field to be used
     to carry information about the configuration of the runtime agent.
     Contributed by: Adrian Hunter <adrian.hunter@intel.com>

  - Fix mmap pgoff: MMAP event pgoff must be the offset within the ELF file
    at which the code resides.
    Contributed by: Adrian Hunter <adrian.hunter@intel.com>

  - Fix ELF virtual addresses: perf tools expect the ELF virtual addresses of dynamic
    objects to match the file offset.
    Contributed by: Adrian Hunter <adrian.hunter@intel.com>

  - JIT MMAP injection does not obey finished_round semantics. JIT MMAP injection injects all
    MMAP events in one go, so it does not obey finished_round semantics, so drop the
    finished_round events from the output perf.data file.
    Contributed by: Adrian Hunter <adrian.hunter@intel.com>

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Carl Love <cel@us.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John McCutchan <johnmccutchan@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1448874143-7269-3-git-send-email-eranian@google.com
[ Moved inject.build_ids ordering bits to a separate patch, fixed the NO_LIBELF=1 build ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-02-05 09:46:45 -03:00

871 lines
22 KiB
C

/*
* 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"
#include "perf.h"
#include "util/color.h"
#include "util/evlist.h"
#include "util/evsel.h"
#include "util/session.h"
#include "util/tool.h"
#include "util/debug.h"
#include "util/build-id.h"
#include "util/data.h"
#include "util/auxtrace.h"
#include "util/jit.h"
#include <subcmd/parse-options.h>
#include <linux/list.h>
struct perf_inject {
struct perf_tool tool;
struct perf_session *session;
bool build_ids;
bool sched_stat;
bool have_auxtrace;
bool strip;
bool jit_mode;
const char *input_name;
struct perf_data_file output;
u64 bytes_written;
u64 aux_id;
struct list_head samples;
struct itrace_synth_opts itrace_synth_opts;
};
struct event_entry {
struct list_head node;
u32 tid;
union perf_event event[0];
};
static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
{
ssize_t size;
size = perf_data_file__write(&inject->output, buf, sz);
if (size < 0)
return -errno;
inject->bytes_written += size;
return 0;
}
static int perf_event__repipe_synth(struct perf_tool *tool,
union perf_event *event)
{
struct perf_inject *inject = container_of(tool, struct perf_inject,
tool);
return output_bytes(inject, event, event->header.size);
}
static int perf_event__repipe_oe_synth(struct perf_tool *tool,
union perf_event *event,
struct ordered_events *oe __maybe_unused)
{
return perf_event__repipe_synth(tool, event);
}
#ifdef HAVE_LIBELF_SUPPORT
static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct ordered_events *oe __maybe_unused)
{
return 0;
}
#endif
static int perf_event__repipe_op2_synth(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session
__maybe_unused)
{
return perf_event__repipe_synth(tool, event);
}
static int perf_event__repipe_attr(struct perf_tool *tool,
union perf_event *event,
struct perf_evlist **pevlist)
{
struct perf_inject *inject = container_of(tool, struct perf_inject,
tool);
int ret;
ret = perf_event__process_attr(tool, event, pevlist);
if (ret)
return ret;
if (!inject->output.is_pipe)
return 0;
return perf_event__repipe_synth(tool, event);
}
#ifdef HAVE_AUXTRACE_SUPPORT
static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
{
char buf[4096];
ssize_t ssz;
int ret;
while (size > 0) {
ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
if (ssz < 0)
return -errno;
ret = output_bytes(inject, buf, ssz);
if (ret)
return ret;
size -= ssz;
}
return 0;
}
static s64 perf_event__repipe_auxtrace(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session
__maybe_unused)
{
struct perf_inject *inject = container_of(tool, struct perf_inject,
tool);
int ret;
inject->have_auxtrace = true;
if (!inject->output.is_pipe) {
off_t offset;
offset = lseek(inject->output.fd, 0, SEEK_CUR);
if (offset == -1)
return -errno;
ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
event, offset);
if (ret < 0)
return ret;
}
if (perf_data_file__is_pipe(session->file) || !session->one_mmap) {
ret = output_bytes(inject, event, event->header.size);
if (ret < 0)
return ret;
ret = copy_bytes(inject, perf_data_file__fd(session->file),
event->auxtrace.size);
} else {
ret = output_bytes(inject, event,
event->header.size + event->auxtrace.size);
}
if (ret < 0)
return ret;
return event->auxtrace.size;
}
#else
static s64
perf_event__repipe_auxtrace(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_session *session __maybe_unused)
{
pr_err("AUX area tracing not supported\n");
return -EINVAL;
}
#endif
static int perf_event__repipe(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
return perf_event__repipe_synth(tool, event);
}
static int perf_event__drop(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
return 0;
}
static int perf_event__drop_aux(struct perf_tool *tool,
union perf_event *event __maybe_unused,
struct perf_sample *sample,
struct machine *machine __maybe_unused)
{
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
if (!inject->aux_id)
inject->aux_id = sample->id;
return 0;
}
typedef int (*inject_handler)(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine);
static int perf_event__repipe_sample(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine)
{
if (evsel->handler) {
inject_handler f = evsel->handler;
return f(tool, event, sample, evsel, machine);
}
build_id__mark_dso_hit(tool, event, sample, evsel, machine);
return perf_event__repipe_synth(tool, event);
}
static int perf_event__repipe_mmap(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
int err;
err = perf_event__process_mmap(tool, event, sample, machine);
perf_event__repipe(tool, event, sample, machine);
return err;
}
#ifdef HAVE_LIBELF_SUPPORT
static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
u64 n = 0;
/*
* if jit marker, then inject jit mmaps and generate ELF images
*/
if (!jit_process(inject->session, &inject->output, machine,
event->mmap.filename, sample->pid, &n)) {
inject->bytes_written += n;
return 0;
}
return perf_event__repipe_mmap(tool, event, sample, machine);
}
#endif
static int perf_event__repipe_mmap2(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
int err;
err = perf_event__process_mmap2(tool, event, sample, machine);
perf_event__repipe(tool, event, sample, machine);
return err;
}
#ifdef HAVE_LIBELF_SUPPORT
static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
u64 n = 0;
/*
* if jit marker, then inject jit mmaps and generate ELF images
*/
if (!jit_process(inject->session, &inject->output, machine,
event->mmap2.filename, sample->pid, &n)) {
inject->bytes_written += n;
return 0;
}
return perf_event__repipe_mmap2(tool, event, sample, machine);
}
#endif
static int perf_event__repipe_fork(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
int err;
err = perf_event__process_fork(tool, event, sample, machine);
perf_event__repipe(tool, event, sample, machine);
return err;
}
static int perf_event__repipe_comm(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
int err;
err = perf_event__process_comm(tool, event, sample, machine);
perf_event__repipe(tool, event, sample, machine);
return err;
}
static int perf_event__repipe_exit(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
int err;
err = perf_event__process_exit(tool, event, sample, machine);
perf_event__repipe(tool, event, sample, machine);
return err;
}
static int perf_event__repipe_tracing_data(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session)
{
int err;
perf_event__repipe_synth(tool, event);
err = perf_event__process_tracing_data(tool, event, session);
return err;
}
static int perf_event__repipe_id_index(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session)
{
int err;
perf_event__repipe_synth(tool, event);
err = perf_event__process_id_index(tool, event, session);
return err;
}
static int dso__read_build_id(struct dso *dso)
{
if (dso->has_build_id)
return 0;
if (filename__read_build_id(dso->long_name, dso->build_id,
sizeof(dso->build_id)) > 0) {
dso->has_build_id = true;
return 0;
}
return -1;
}
static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
struct machine *machine)
{
u16 misc = PERF_RECORD_MISC_USER;
int err;
if (dso__read_build_id(dso) < 0) {
pr_debug("no build_id found for %s\n", dso->long_name);
return -1;
}
if (dso->kernel)
misc = PERF_RECORD_MISC_KERNEL;
err = perf_event__synthesize_build_id(tool, dso, misc, perf_event__repipe,
machine);
if (err) {
pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
return -1;
}
return 0;
}
static int perf_event__inject_buildid(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel __maybe_unused,
struct machine *machine)
{
struct addr_location al;
struct thread *thread;
u8 cpumode;
cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
thread = machine__findnew_thread(machine, sample->pid, sample->tid);
if (thread == NULL) {
pr_err("problem processing %d event, skipping it.\n",
event->header.type);
goto repipe;
}
thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, &al);
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, tool, machine);
/*
* If this fails, too bad, let the other side
* account this as unresolved.
*/
} else {
#ifdef HAVE_LIBELF_SUPPORT
pr_warning("no symbols found in %s, maybe "
"install a debug package?\n",
al.map->dso->long_name);
#endif
}
}
}
thread__put(thread);
repipe:
perf_event__repipe(tool, event, sample, machine);
return 0;
}
static int perf_inject__sched_process_exit(struct perf_tool *tool,
union perf_event *event __maybe_unused,
struct perf_sample *sample,
struct perf_evsel *evsel __maybe_unused,
struct machine *machine __maybe_unused)
{
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
struct event_entry *ent;
list_for_each_entry(ent, &inject->samples, node) {
if (sample->tid == ent->tid) {
list_del_init(&ent->node);
free(ent);
break;
}
}
return 0;
}
static int perf_inject__sched_switch(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine)
{
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
struct event_entry *ent;
perf_inject__sched_process_exit(tool, event, sample, evsel, machine);
ent = malloc(event->header.size + sizeof(struct event_entry));
if (ent == NULL) {
color_fprintf(stderr, PERF_COLOR_RED,
"Not enough memory to process sched switch event!");
return -1;
}
ent->tid = sample->tid;
memcpy(&ent->event, event, event->header.size);
list_add(&ent->node, &inject->samples);
return 0;
}
static int perf_inject__sched_stat(struct perf_tool *tool,
union perf_event *event __maybe_unused,
struct perf_sample *sample,
struct perf_evsel *evsel,
struct machine *machine)
{
struct event_entry *ent;
union perf_event *event_sw;
struct perf_sample sample_sw;
struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
u32 pid = perf_evsel__intval(evsel, sample, "pid");
list_for_each_entry(ent, &inject->samples, node) {
if (pid == ent->tid)
goto found;
}
return 0;
found:
event_sw = &ent->event[0];
perf_evsel__parse_sample(evsel, event_sw, &sample_sw);
sample_sw.period = sample->period;
sample_sw.time = sample->time;
perf_event__synthesize_sample(event_sw, evsel->attr.sample_type,
evsel->attr.read_format, &sample_sw,
false);
build_id__mark_dso_hit(tool, event_sw, &sample_sw, evsel, machine);
return perf_event__repipe(tool, event_sw, &sample_sw, machine);
}
static void sig_handler(int sig __maybe_unused)
{
session_done = 1;
}
static int perf_evsel__check_stype(struct perf_evsel *evsel,
u64 sample_type, const char *sample_msg)
{
struct perf_event_attr *attr = &evsel->attr;
const char *name = perf_evsel__name(evsel);
if (!(attr->sample_type & sample_type)) {
pr_err("Samples for %s event do not have %s attribute set.",
name, sample_msg);
return -EINVAL;
}
return 0;
}
static int drop_sample(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_sample *sample __maybe_unused,
struct perf_evsel *evsel __maybe_unused,
struct machine *machine __maybe_unused)
{
return 0;
}
static void strip_init(struct perf_inject *inject)
{
struct perf_evlist *evlist = inject->session->evlist;
struct perf_evsel *evsel;
inject->tool.context_switch = perf_event__drop;
evlist__for_each(evlist, evsel)
evsel->handler = drop_sample;
}
static bool has_tracking(struct perf_evsel *evsel)
{
return evsel->attr.mmap || evsel->attr.mmap2 || evsel->attr.comm ||
evsel->attr.task;
}
#define COMPAT_MASK (PERF_SAMPLE_ID | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | \
PERF_SAMPLE_ID | PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER)
/*
* In order that the perf.data file is parsable, tracking events like MMAP need
* their selected event to exist, except if there is only 1 selected event left
* and it has a compatible sample type.
*/
static bool ok_to_remove(struct perf_evlist *evlist,
struct perf_evsel *evsel_to_remove)
{
struct perf_evsel *evsel;
int cnt = 0;
bool ok = false;
if (!has_tracking(evsel_to_remove))
return true;
evlist__for_each(evlist, evsel) {
if (evsel->handler != drop_sample) {
cnt += 1;
if ((evsel->attr.sample_type & COMPAT_MASK) ==
(evsel_to_remove->attr.sample_type & COMPAT_MASK))
ok = true;
}
}
return ok && cnt == 1;
}
static void strip_fini(struct perf_inject *inject)
{
struct perf_evlist *evlist = inject->session->evlist;
struct perf_evsel *evsel, *tmp;
/* Remove non-synthesized evsels if possible */
evlist__for_each_safe(evlist, tmp, evsel) {
if (evsel->handler == drop_sample &&
ok_to_remove(evlist, evsel)) {
pr_debug("Deleting %s\n", perf_evsel__name(evsel));
perf_evlist__remove(evlist, evsel);
perf_evsel__delete(evsel);
}
}
}
static int __cmd_inject(struct perf_inject *inject)
{
int ret = -EINVAL;
struct perf_session *session = inject->session;
struct perf_data_file *file_out = &inject->output;
int fd = perf_data_file__fd(file_out);
u64 output_data_offset;
signal(SIGINT, sig_handler);
if (inject->build_ids || inject->sched_stat ||
inject->itrace_synth_opts.set) {
inject->tool.mmap = perf_event__repipe_mmap;
inject->tool.mmap2 = perf_event__repipe_mmap2;
inject->tool.fork = perf_event__repipe_fork;
inject->tool.tracing_data = perf_event__repipe_tracing_data;
}
output_data_offset = session->header.data_offset;
if (inject->build_ids) {
inject->tool.sample = perf_event__inject_buildid;
} else if (inject->sched_stat) {
struct perf_evsel *evsel;
evlist__for_each(session->evlist, evsel) {
const char *name = perf_evsel__name(evsel);
if (!strcmp(name, "sched:sched_switch")) {
if (perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID"))
return -EINVAL;
evsel->handler = perf_inject__sched_switch;
} else if (!strcmp(name, "sched:sched_process_exit"))
evsel->handler = perf_inject__sched_process_exit;
else if (!strncmp(name, "sched:sched_stat_", 17))
evsel->handler = perf_inject__sched_stat;
}
} else if (inject->itrace_synth_opts.set) {
session->itrace_synth_opts = &inject->itrace_synth_opts;
inject->itrace_synth_opts.inject = true;
inject->tool.comm = perf_event__repipe_comm;
inject->tool.exit = perf_event__repipe_exit;
inject->tool.id_index = perf_event__repipe_id_index;
inject->tool.auxtrace_info = perf_event__process_auxtrace_info;
inject->tool.auxtrace = perf_event__process_auxtrace;
inject->tool.aux = perf_event__drop_aux;
inject->tool.itrace_start = perf_event__drop_aux,
inject->tool.ordered_events = true;
inject->tool.ordering_requires_timestamps = true;
/* Allow space in the header for new attributes */
output_data_offset = 4096;
if (inject->strip)
strip_init(inject);
}
if (!inject->itrace_synth_opts.set)
auxtrace_index__free(&session->auxtrace_index);
if (!file_out->is_pipe)
lseek(fd, output_data_offset, SEEK_SET);
ret = perf_session__process_events(session);
if (!file_out->is_pipe) {
if (inject->build_ids) {
perf_header__set_feat(&session->header,
HEADER_BUILD_ID);
if (inject->have_auxtrace)
dsos__hit_all(session);
}
/*
* The AUX areas have been removed and replaced with
* synthesized hardware events, so clear the feature flag and
* remove the evsel.
*/
if (inject->itrace_synth_opts.set) {
struct perf_evsel *evsel;
perf_header__clear_feat(&session->header,
HEADER_AUXTRACE);
if (inject->itrace_synth_opts.last_branch)
perf_header__set_feat(&session->header,
HEADER_BRANCH_STACK);
evsel = perf_evlist__id2evsel_strict(session->evlist,
inject->aux_id);
if (evsel) {
pr_debug("Deleting %s\n",
perf_evsel__name(evsel));
perf_evlist__remove(session->evlist, evsel);
perf_evsel__delete(evsel);
}
if (inject->strip)
strip_fini(inject);
}
session->header.data_offset = output_data_offset;
session->header.data_size = inject->bytes_written;
perf_session__write_header(session, session->evlist, fd, true);
}
return ret;
}
#ifdef HAVE_LIBELF_SUPPORT
static int
jit_validate_events(struct perf_session *session)
{
struct perf_evsel *evsel;
/*
* check that all events use CLOCK_MONOTONIC
*/
evlist__for_each(session->evlist, evsel) {
if (evsel->attr.use_clockid == 0 || evsel->attr.clockid != CLOCK_MONOTONIC)
return -1;
}
return 0;
}
#endif
int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
{
struct perf_inject inject = {
.tool = {
.sample = perf_event__repipe_sample,
.mmap = perf_event__repipe,
.mmap2 = perf_event__repipe,
.comm = perf_event__repipe,
.fork = perf_event__repipe,
.exit = perf_event__repipe,
.lost = perf_event__repipe,
.lost_samples = perf_event__repipe,
.aux = perf_event__repipe,
.itrace_start = perf_event__repipe,
.context_switch = perf_event__repipe,
.read = perf_event__repipe_sample,
.throttle = perf_event__repipe,
.unthrottle = perf_event__repipe,
.attr = perf_event__repipe_attr,
.tracing_data = perf_event__repipe_op2_synth,
.auxtrace_info = perf_event__repipe_op2_synth,
.auxtrace = perf_event__repipe_auxtrace,
.auxtrace_error = perf_event__repipe_op2_synth,
.finished_round = perf_event__repipe_oe_synth,
.build_id = perf_event__repipe_op2_synth,
.id_index = perf_event__repipe_op2_synth,
},
.input_name = "-",
.samples = LIST_HEAD_INIT(inject.samples),
.output = {
.path = "-",
.mode = PERF_DATA_MODE_WRITE,
},
};
struct perf_data_file file = {
.mode = PERF_DATA_MODE_READ,
};
int ret;
struct option options[] = {
OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
"Inject build-ids into the output stream"),
OPT_STRING('i', "input", &inject.input_name, "file",
"input file name"),
OPT_STRING('o', "output", &inject.output.path, "file",
"output file name"),
OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
"Merge sched-stat and sched-switch for getting events "
"where and how long tasks slept"),
OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
OPT_INCR('v', "verbose", &verbose,
"be more verbose (show build ids, etc)"),
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
"kallsyms pathname"),
OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
NULL, "opts", "Instruction Tracing options",
itrace_parse_synth_opts),
OPT_BOOLEAN(0, "strip", &inject.strip,
"strip non-synthesized events (use with --itrace)"),
OPT_END()
};
const char * const inject_usage[] = {
"perf inject [<options>]",
NULL
};
#ifndef HAVE_LIBELF_SUPPORT
set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
#endif
argc = parse_options(argc, argv, options, inject_usage, 0);
/*
* Any (unrecognized) arguments left?
*/
if (argc)
usage_with_options(inject_usage, options);
if (inject.strip && !inject.itrace_synth_opts.set) {
pr_err("--strip option requires --itrace option\n");
return -1;
}
if (perf_data_file__open(&inject.output)) {
perror("failed to create output file");
return -1;
}
inject.tool.ordered_events = inject.sched_stat;
file.path = inject.input_name;
inject.session = perf_session__new(&file, true, &inject.tool);
if (inject.session == NULL)
return -1;
if (inject.build_ids) {
/*
* to make sure the mmap records are ordered correctly
* and so that the correct especially due to jitted code
* mmaps. We cannot generate the buildid hit list and
* inject the jit mmaps at the same time for now.
*/
inject.tool.ordered_events = true;
inject.tool.ordering_requires_timestamps = true;
}
#ifdef HAVE_LIBELF_SUPPORT
if (inject.jit_mode) {
/*
* validate event is using the correct clockid
*/
if (jit_validate_events(inject.session)) {
fprintf(stderr, "error, jitted code must be sampled with perf record -k 1\n");
return -1;
}
inject.tool.mmap2 = perf_event__jit_repipe_mmap2;
inject.tool.mmap = perf_event__jit_repipe_mmap;
inject.tool.ordered_events = true;
inject.tool.ordering_requires_timestamps = true;
/*
* JIT MMAP injection injects all MMAP events in one go, so it
* does not obey finished_round semantics.
*/
inject.tool.finished_round = perf_event__drop_oe;
}
#endif
ret = symbol__init(&inject.session->header.env);
if (ret < 0)
goto out_delete;
ret = __cmd_inject(&inject);
out_delete:
perf_session__delete(inject.session);
return ret;
}