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perf inject: Add --buildid-all option

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Like 'perf record', we can even more speedup build-id processing by just
using all DSOs.  Then we don't need to look at all the sample events
anymore.  The following patch will update 'perf bench' to show the result
of the --buildid-all option too.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Original-patch-by: Stephane Eranian <eranian@google.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20201012070214.2074921-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2020-10-12 16:02:13 +09:00 committed by Arnaldo Carvalho de Melo
parent e7b60c5a0c
commit 27c9c3424f
2 changed files with 113 additions and 6 deletions
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6
tools/perf/Documentation/perf-inject.txt
View file

@ -24,8 +24,12 @@ information could make use of this facility.
OPTIONS
-------
-b::
--build-ids=::
--build-ids::
Inject build-ids into the output stream
--buildid-all:
Inject build-ids of all DSOs into the output stream
-v::
--verbose::
Be more verbose.

113
tools/perf/builtin-inject.c
View file

@ -10,6 +10,7 @@
#include "util/color.h"
#include "util/dso.h"
#include "util/vdso.h"
#include "util/evlist.h"
#include "util/evsel.h"
#include "util/map.h"
@ -37,6 +38,7 @@ struct perf_inject {
struct perf_tool tool;
struct perf_session *session;
bool build_ids;
bool build_id_all;
bool sched_stat;
bool have_auxtrace;
bool strip;
@ -56,6 +58,9 @@ struct event_entry {
union perf_event event[];
};
static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
struct machine *machine, u8 cpumode, u32 flags);
static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
{
ssize_t size;
@ -319,6 +324,68 @@ static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
}
#endif
static struct dso *findnew_dso(int pid, int tid, const char *filename,
struct dso_id *id, struct machine *machine)
{
struct thread *thread;
struct nsinfo *nsi = NULL;
struct nsinfo *nnsi;
struct dso *dso;
bool vdso;
thread = machine__findnew_thread(machine, pid, tid);
if (thread == NULL) {
pr_err("cannot find or create a task %d/%d.\n", tid, pid);
return NULL;
}
vdso = is_vdso_map(filename);
nsi = nsinfo__get(thread->nsinfo);
if (vdso) {
/* The vdso maps are always on the host and not the
* container. Ensure that we don't use setns to look
* them up.
*/
nnsi = nsinfo__copy(nsi);
if (nnsi) {
nsinfo__put(nsi);
nnsi->need_setns = false;
nsi = nnsi;
}
dso = machine__findnew_vdso(machine, thread);
} else {
dso = machine__findnew_dso_id(machine, filename, id);
}
if (dso)
dso->nsinfo = nsi;
else
nsinfo__put(nsi);
thread__put(thread);
return dso;
}
static int perf_event__repipe_buildid_mmap(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct dso *dso;
dso = findnew_dso(event->mmap.pid, event->mmap.tid,
event->mmap.filename, NULL, machine);
if (dso && !dso->hit) {
dso->hit = 1;
dso__inject_build_id(dso, tool, machine, sample->cpumode, 0);
dso__put(dso);
}
return perf_event__repipe(tool, event, sample, machine);
}
static int perf_event__repipe_mmap2(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
@ -357,6 +424,34 @@ static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
}
#endif
static int perf_event__repipe_buildid_mmap2(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
struct machine *machine)
{
struct dso_id dso_id = {
.maj = event->mmap2.maj,
.min = event->mmap2.min,
.ino = event->mmap2.ino,
.ino_generation = event->mmap2.ino_generation,
};
struct dso *dso;
dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
event->mmap2.filename, &dso_id, machine);
if (dso && !dso->hit) {
dso->hit = 1;
dso__inject_build_id(dso, tool, machine, sample->cpumode,
event->mmap2.flags);
dso__put(dso);
}
perf_event__repipe(tool, event, sample, machine);
return 0;
}
static int perf_event__repipe_fork(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample,
@ -614,7 +709,7 @@ static int __cmd_inject(struct perf_inject *inject)
signal(SIGINT, sig_handler);
if (inject->build_ids || inject->sched_stat ||
inject->itrace_synth_opts.set) {
inject->itrace_synth_opts.set || inject->build_id_all) {
inject->tool.mmap = perf_event__repipe_mmap;
inject->tool.mmap2 = perf_event__repipe_mmap2;
inject->tool.fork = perf_event__repipe_fork;
@ -623,7 +718,10 @@ static int __cmd_inject(struct perf_inject *inject)
output_data_offset = session->header.data_offset;
if (inject->build_ids) {
if (inject->build_id_all) {
inject->tool.mmap = perf_event__repipe_buildid_mmap;
inject->tool.mmap2 = perf_event__repipe_buildid_mmap2;
} else if (inject->build_ids) {
inject->tool.sample = perf_event__inject_buildid;
} else if (inject->sched_stat) {
struct evsel *evsel;
@ -767,6 +865,8 @@ int cmd_inject(int argc, const char **argv)
struct option options[] = {
OPT_BOOLEAN('b', "build-ids", &inject.build_ids,
"Inject build-ids into the output stream"),
OPT_BOOLEAN(0, "buildid-all", &inject.build_id_all,
"Inject build-ids of all DSOs into the output stream"),
OPT_STRING('i', "input", &inject.input_name, "file",
"input file name"),
OPT_STRING('o', "output", &inject.output.path, "file",
@ -815,8 +915,6 @@ int cmd_inject(int argc, const char **argv)
return -1;
}
inject.tool.ordered_events = inject.sched_stat;
data.path = inject.input_name;
inject.session = perf_session__new(&data, true, &inject.tool);
if (IS_ERR(inject.session))
@ -825,7 +923,7 @@ int cmd_inject(int argc, const char **argv)
if (zstd_init(&(inject.session->zstd_data), 0) < 0)
pr_warning("Decompression initialization failed.\n");
if (inject.build_ids) {
if (inject.build_ids && !inject.build_id_all) {
/*
* to make sure the mmap records are ordered correctly
* and so that the correct especially due to jitted code
@ -835,6 +933,11 @@ int cmd_inject(int argc, const char **argv)
inject.tool.ordered_events = true;
inject.tool.ordering_requires_timestamps = true;
}
if (inject.sched_stat) {
inject.tool.ordered_events = true;
}
#ifdef HAVE_JITDUMP
if (inject.jit_mode) {
inject.tool.mmap2 = perf_event__jit_repipe_mmap2;