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-rw-r--r--tools/perf/builtin-inject.c957
1 files changed, 957 insertions, 0 deletions
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
new file mode 100644
index 000000000..8f1a99e2f
--- /dev/null
+++ b/tools/perf/builtin-inject.c
@@ -0,0 +1,957 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 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 "util/color.h"
+#include "util/dso.h"
+#include "util/vdso.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/map.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 "util/symbol.h"
+#include "util/synthetic-events.h"
+#include "util/thread.h"
+#include "util/namespaces.h"
+
+#include <linux/err.h>
+#include <subcmd/parse-options.h>
+#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
+
+#include <linux/list.h>
+#include <errno.h>
+#include <signal.h>
+
+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;
+ bool jit_mode;
+ const char *input_name;
+ struct perf_data output;
+ u64 bytes_written;
+ u64 aux_id;
+ struct list_head samples;
+ struct itrace_synth_opts itrace_synth_opts;
+ char event_copy[PERF_SAMPLE_MAX_SIZE];
+};
+
+struct event_entry {
+ struct list_head node;
+ u32 tid;
+ 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;
+
+ size = perf_data__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_JITDUMP
+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_session *session,
+ union perf_event *event)
+{
+ return perf_event__repipe_synth(session->tool, event);
+}
+
+static int perf_event__repipe_op4_synth(struct perf_session *session,
+ union perf_event *event,
+ u64 data __maybe_unused)
+{
+ return perf_event__repipe_synth(session->tool, event);
+}
+
+static int perf_event__repipe_attr(struct perf_tool *tool,
+ union perf_event *event,
+ struct 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);
+}
+
+static int perf_event__repipe_event_update(struct perf_tool *tool,
+ union perf_event *event,
+ struct evlist **pevlist __maybe_unused)
+{
+ 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_session *session,
+ union perf_event *event)
+{
+ struct perf_tool *tool = session->tool;
+ 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.file.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__is_pipe(session->data) || !session->one_mmap) {
+ ret = output_bytes(inject, event, event->header.size);
+ if (ret < 0)
+ return ret;
+ ret = copy_bytes(inject, perf_data__fd(session->data),
+ 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_session *session __maybe_unused,
+ union perf_event *event __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;
+}
+
+static union perf_event *
+perf_inject__cut_auxtrace_sample(struct perf_inject *inject,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ size_t sz1 = sample->aux_sample.data - (void *)event;
+ size_t sz2 = event->header.size - sample->aux_sample.size - sz1;
+ union perf_event *ev = (union perf_event *)inject->event_copy;
+
+ if (sz1 > event->header.size || sz2 > event->header.size ||
+ sz1 + sz2 > event->header.size ||
+ sz1 < sizeof(struct perf_event_header) + sizeof(u64))
+ return event;
+
+ memcpy(ev, event, sz1);
+ memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2);
+ ev->header.size = sz1 + sz2;
+ ((u64 *)((void *)ev + sz1))[-1] = 0;
+
+ return ev;
+}
+
+typedef int (*inject_handler)(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct evsel *evsel,
+ struct machine *machine);
+
+static int perf_event__repipe_sample(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct evsel *evsel,
+ struct machine *machine)
+{
+ struct perf_inject *inject = container_of(tool, struct perf_inject,
+ tool);
+
+ if (evsel && evsel->handler) {
+ inject_handler f = evsel->handler;
+ return f(tool, event, sample, evsel, machine);
+ }
+
+ build_id__mark_dso_hit(tool, event, sample, evsel, machine);
+
+ if (inject->itrace_synth_opts.set && sample->aux_sample.size)
+ event = perf_inject__cut_auxtrace_sample(inject, event, sample);
+
+ 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_JITDUMP
+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;
+ int ret;
+
+ /*
+ * if jit marker, then inject jit mmaps and generate ELF images
+ */
+ ret = jit_process(inject->session, &inject->output, machine,
+ event->mmap.filename, event->mmap.pid, &n);
+ if (ret < 0)
+ return ret;
+ if (ret) {
+ inject->bytes_written += n;
+ return 0;
+ }
+ return perf_event__repipe_mmap(tool, event, sample, machine);
+}
+#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) {
+ nsinfo__put(dso->nsinfo);
+ 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,
+ 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_JITDUMP
+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;
+ int ret;
+
+ /*
+ * if jit marker, then inject jit mmaps and generate ELF images
+ */
+ ret = jit_process(inject->session, &inject->output, machine,
+ event->mmap2.filename, event->mmap2.pid, &n);
+ if (ret < 0)
+ return ret;
+ if (ret) {
+ inject->bytes_written += n;
+ return 0;
+ }
+ return perf_event__repipe_mmap2(tool, event, sample, machine);
+}
+#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,
+ 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_namespaces(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ int err = perf_event__process_namespaces(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_session *session,
+ union perf_event *event)
+{
+ int err;
+
+ perf_event__repipe_synth(session->tool, event);
+ err = perf_event__process_tracing_data(session, event);
+
+ return err;
+}
+
+static int dso__read_build_id(struct dso *dso)
+{
+ struct nscookie nsc;
+
+ if (dso->has_build_id)
+ return 0;
+
+ nsinfo__mountns_enter(dso->nsinfo, &nsc);
+ if (filename__read_build_id(dso->long_name, &dso->bid) > 0)
+ dso->has_build_id = true;
+ nsinfo__mountns_exit(&nsc);
+
+ return dso->has_build_id ? 0 : -1;
+}
+
+static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
+ struct machine *machine, u8 cpumode, u32 flags)
+{
+ int err;
+
+ if (is_anon_memory(dso->long_name) || flags & MAP_HUGETLB)
+ return 0;
+ if (is_no_dso_memory(dso->long_name))
+ return 0;
+
+ if (dso__read_build_id(dso) < 0) {
+ pr_debug("no build_id found for %s\n", dso->long_name);
+ return -1;
+ }
+
+ err = perf_event__synthesize_build_id(tool, dso, cpumode,
+ perf_event__repipe, machine);
+ if (err) {
+ pr_err("Can't synthesize build_id event for %s\n", dso->long_name);
+ return -1;
+ }
+
+ return 0;
+}
+
+int perf_event__inject_buildid(struct perf_tool *tool, union perf_event *event,
+ struct perf_sample *sample,
+ struct evsel *evsel __maybe_unused,
+ struct machine *machine)
+{
+ struct addr_location al;
+ struct thread *thread;
+
+ 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;
+ }
+
+ if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) {
+ if (!al.map->dso->hit) {
+ al.map->dso->hit = 1;
+ dso__inject_build_id(al.map->dso, tool, machine,
+ sample->cpumode, al.map->flags);
+ }
+ }
+
+ 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 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 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 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 = 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];
+ 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->core.attr.sample_type,
+ evsel->core.attr.read_format, &sample_sw);
+ 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 evsel__check_stype(struct evsel *evsel, u64 sample_type, const char *sample_msg)
+{
+ struct perf_event_attr *attr = &evsel->core.attr;
+ const char *name = 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 evsel *evsel __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ return 0;
+}
+
+static void strip_init(struct perf_inject *inject)
+{
+ struct evlist *evlist = inject->session->evlist;
+ struct evsel *evsel;
+
+ inject->tool.context_switch = perf_event__drop;
+
+ evlist__for_each_entry(evlist, evsel)
+ evsel->handler = drop_sample;
+}
+
+static int __cmd_inject(struct perf_inject *inject)
+{
+ int ret = -EINVAL;
+ struct perf_session *session = inject->session;
+ struct perf_data *data_out = &inject->output;
+ int fd = perf_data__fd(data_out);
+ u64 output_data_offset;
+
+ signal(SIGINT, sig_handler);
+
+ if (inject->build_ids || inject->sched_stat ||
+ 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;
+ inject->tool.tracing_data = perf_event__repipe_tracing_data;
+ }
+
+ output_data_offset = session->header.data_offset;
+
+ 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;
+
+ evlist__for_each_entry(session->evlist, evsel) {
+ const char *name = evsel__name(evsel);
+
+ if (!strcmp(name, "sched:sched_switch")) {
+ if (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.namespaces = perf_event__repipe_namespaces;
+ inject->tool.exit = perf_event__repipe_exit;
+ inject->tool.id_index = perf_event__process_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 = roundup(8192 + session->header.data_offset, 4096);
+ if (inject->strip)
+ strip_init(inject);
+ }
+
+ if (!inject->itrace_synth_opts.set)
+ auxtrace_index__free(&session->auxtrace_index);
+
+ if (!data_out->is_pipe)
+ lseek(fd, output_data_offset, SEEK_SET);
+
+ ret = perf_session__process_events(session);
+ if (ret)
+ return ret;
+
+ if (!data_out->is_pipe) {
+ if (inject->build_ids)
+ perf_header__set_feat(&session->header,
+ HEADER_BUILD_ID);
+ /*
+ * Keep all buildids when there is unprocessed AUX data because
+ * it is not known which ones the AUX trace hits.
+ */
+ if (perf_header__has_feat(&session->header, HEADER_BUILD_ID) &&
+ inject->have_auxtrace && !inject->itrace_synth_opts.set)
+ dsos__hit_all(session);
+ /*
+ * The AUX areas have been removed and replaced with
+ * synthesized hardware events, so clear the feature flag.
+ */
+ if (inject->itrace_synth_opts.set) {
+ perf_header__clear_feat(&session->header,
+ HEADER_AUXTRACE);
+ if (inject->itrace_synth_opts.last_branch ||
+ inject->itrace_synth_opts.add_last_branch)
+ perf_header__set_feat(&session->header,
+ HEADER_BRANCH_STACK);
+ }
+ 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;
+}
+
+int cmd_inject(int argc, const char **argv)
+{
+ struct perf_inject inject = {
+ .tool = {
+ .sample = perf_event__repipe_sample,
+ .read = perf_event__repipe_sample,
+ .mmap = perf_event__repipe,
+ .mmap2 = perf_event__repipe,
+ .comm = perf_event__repipe,
+ .namespaces = perf_event__repipe,
+ .cgroup = 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,
+ .throttle = perf_event__repipe,
+ .unthrottle = perf_event__repipe,
+ .ksymbol = perf_event__repipe,
+ .bpf = perf_event__repipe,
+ .text_poke = perf_event__repipe,
+ .attr = perf_event__repipe_attr,
+ .event_update = perf_event__repipe_event_update,
+ .tracing_data = 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,
+ .auxtrace_info = perf_event__repipe_op2_synth,
+ .auxtrace_error = perf_event__repipe_op2_synth,
+ .time_conv = perf_event__repipe_op2_synth,
+ .thread_map = perf_event__repipe_op2_synth,
+ .cpu_map = perf_event__repipe_op2_synth,
+ .stat_config = perf_event__repipe_op2_synth,
+ .stat = perf_event__repipe_op2_synth,
+ .stat_round = perf_event__repipe_op2_synth,
+ .feature = perf_event__repipe_op2_synth,
+ .compressed = perf_event__repipe_op4_synth,
+ .auxtrace = perf_event__repipe_auxtrace,
+ },
+ .input_name = "-",
+ .samples = LIST_HEAD_INIT(inject.samples),
+ .output = {
+ .path = "-",
+ .mode = PERF_DATA_MODE_WRITE,
+ },
+ };
+ struct perf_data data = {
+ .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_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",
+ "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"),
+#ifdef HAVE_JITDUMP
+ OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
+#endif
+ 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", &data.force, "don't complain, do it"),
+ OPT_CALLBACK_OPTARG(0, "itrace", &inject.itrace_synth_opts,
+ NULL, "opts", "Instruction Tracing options\n"
+ ITRACE_HELP,
+ 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_JITDUMP
+ 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__open(&inject.output)) {
+ perror("failed to create output file");
+ return -1;
+ }
+
+ data.path = inject.input_name;
+ inject.session = perf_session__new(&data, inject.output.is_pipe, &inject.tool);
+ if (IS_ERR(inject.session)) {
+ ret = PTR_ERR(inject.session);
+ goto out_close_output;
+ }
+
+ if (zstd_init(&(inject.session->zstd_data), 0) < 0)
+ pr_warning("Decompression initialization failed.\n");
+
+ 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
+ * 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;
+ }
+
+ if (inject.sched_stat) {
+ inject.tool.ordered_events = true;
+ }
+
+#ifdef HAVE_JITDUMP
+ if (inject.jit_mode) {
+ 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:
+ zstd_fini(&(inject.session->zstd_data));
+ perf_session__delete(inject.session);
+out_close_output:
+ perf_data__close(&inject.output);
+ return ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 22:32:55 +0000