1085 lines
29 KiB
C
1085 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0
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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 "util/color.h"
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#include "util/dso.h"
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#include "util/vdso.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include "util/map.h"
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#include "util/session.h"
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#include "util/tool.h"
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#include "util/debug.h"
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#include "util/build-id.h"
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#include "util/data.h"
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#include "util/auxtrace.h"
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#include "util/jit.h"
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#include "util/symbol.h"
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#include "util/synthetic-events.h"
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#include "util/thread.h"
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#include "util/namespaces.h"
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#include <linux/err.h>
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#include <subcmd/parse-options.h>
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#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
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#include <linux/list.h>
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#include <linux/string.h>
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#include <errno.h>
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#include <signal.h>
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struct perf_inject {
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struct perf_tool tool;
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struct perf_session *session;
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bool build_ids;
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bool build_id_all;
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bool sched_stat;
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bool have_auxtrace;
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bool strip;
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bool jit_mode;
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bool in_place_update;
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bool in_place_update_dry_run;
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bool is_pipe;
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const char *input_name;
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struct perf_data output;
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u64 bytes_written;
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u64 aux_id;
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struct list_head samples;
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struct itrace_synth_opts itrace_synth_opts;
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char event_copy[PERF_SAMPLE_MAX_SIZE];
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};
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struct event_entry {
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struct list_head node;
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u32 tid;
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union perf_event event[];
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};
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static int dso__inject_build_id(struct dso *dso, struct perf_tool *tool,
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struct machine *machine, u8 cpumode, u32 flags);
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static int output_bytes(struct perf_inject *inject, void *buf, size_t sz)
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{
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ssize_t size;
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size = perf_data__write(&inject->output, buf, sz);
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if (size < 0)
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return -errno;
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inject->bytes_written += size;
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return 0;
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}
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static int perf_event__repipe_synth(struct perf_tool *tool,
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union perf_event *event)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject,
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tool);
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return output_bytes(inject, event, event->header.size);
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}
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static int perf_event__repipe_oe_synth(struct perf_tool *tool,
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union perf_event *event,
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struct ordered_events *oe __maybe_unused)
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{
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return perf_event__repipe_synth(tool, event);
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}
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#ifdef HAVE_JITDUMP
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static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
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union perf_event *event __maybe_unused,
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struct ordered_events *oe __maybe_unused)
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{
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return 0;
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}
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#endif
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static int perf_event__repipe_op2_synth(struct perf_session *session,
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union perf_event *event)
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{
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return perf_event__repipe_synth(session->tool, event);
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}
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static int perf_event__repipe_op4_synth(struct perf_session *session,
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union perf_event *event,
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u64 data __maybe_unused)
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{
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return perf_event__repipe_synth(session->tool, event);
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}
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static int perf_event__repipe_attr(struct perf_tool *tool,
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union perf_event *event,
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struct evlist **pevlist)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject,
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tool);
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int ret;
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ret = perf_event__process_attr(tool, event, pevlist);
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if (ret)
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return ret;
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if (!inject->is_pipe)
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return 0;
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return perf_event__repipe_synth(tool, event);
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}
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static int perf_event__repipe_event_update(struct perf_tool *tool,
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union perf_event *event,
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struct evlist **pevlist __maybe_unused)
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{
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return perf_event__repipe_synth(tool, event);
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}
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#ifdef HAVE_AUXTRACE_SUPPORT
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static int copy_bytes(struct perf_inject *inject, int fd, off_t size)
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{
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char buf[4096];
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ssize_t ssz;
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int ret;
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while (size > 0) {
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ssz = read(fd, buf, min(size, (off_t)sizeof(buf)));
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if (ssz < 0)
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return -errno;
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ret = output_bytes(inject, buf, ssz);
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if (ret)
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return ret;
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size -= ssz;
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}
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return 0;
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}
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static s64 perf_event__repipe_auxtrace(struct perf_session *session,
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union perf_event *event)
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{
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struct perf_tool *tool = session->tool;
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struct perf_inject *inject = container_of(tool, struct perf_inject,
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tool);
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int ret;
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inject->have_auxtrace = true;
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if (!inject->output.is_pipe) {
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off_t offset;
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offset = lseek(inject->output.file.fd, 0, SEEK_CUR);
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if (offset == -1)
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return -errno;
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ret = auxtrace_index__auxtrace_event(&session->auxtrace_index,
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event, offset);
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if (ret < 0)
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return ret;
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}
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if (perf_data__is_pipe(session->data) || !session->one_mmap) {
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ret = output_bytes(inject, event, event->header.size);
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if (ret < 0)
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return ret;
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ret = copy_bytes(inject, perf_data__fd(session->data),
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event->auxtrace.size);
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} else {
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ret = output_bytes(inject, event,
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event->header.size + event->auxtrace.size);
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}
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if (ret < 0)
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return ret;
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return event->auxtrace.size;
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}
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#else
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static s64
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perf_event__repipe_auxtrace(struct perf_session *session __maybe_unused,
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union perf_event *event __maybe_unused)
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{
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pr_err("AUX area tracing not supported\n");
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return -EINVAL;
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}
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#endif
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static int perf_event__repipe(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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return perf_event__repipe_synth(tool, event);
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}
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static int perf_event__drop(struct perf_tool *tool __maybe_unused,
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union perf_event *event __maybe_unused,
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struct perf_sample *sample __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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return 0;
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}
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static int perf_event__drop_aux(struct perf_tool *tool,
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union perf_event *event __maybe_unused,
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struct perf_sample *sample,
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struct machine *machine __maybe_unused)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
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if (!inject->aux_id)
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inject->aux_id = sample->id;
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return 0;
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}
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static union perf_event *
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perf_inject__cut_auxtrace_sample(struct perf_inject *inject,
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union perf_event *event,
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struct perf_sample *sample)
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{
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size_t sz1 = sample->aux_sample.data - (void *)event;
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size_t sz2 = event->header.size - sample->aux_sample.size - sz1;
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union perf_event *ev = (union perf_event *)inject->event_copy;
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if (sz1 > event->header.size || sz2 > event->header.size ||
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sz1 + sz2 > event->header.size ||
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sz1 < sizeof(struct perf_event_header) + sizeof(u64))
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return event;
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memcpy(ev, event, sz1);
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memcpy((void *)ev + sz1, (void *)event + event->header.size - sz2, sz2);
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ev->header.size = sz1 + sz2;
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((u64 *)((void *)ev + sz1))[-1] = 0;
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return ev;
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}
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typedef int (*inject_handler)(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct evsel *evsel,
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struct machine *machine);
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static int perf_event__repipe_sample(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct evsel *evsel,
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struct machine *machine)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject,
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tool);
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if (evsel && evsel->handler) {
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inject_handler f = evsel->handler;
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return f(tool, event, sample, evsel, machine);
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}
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build_id__mark_dso_hit(tool, event, sample, evsel, machine);
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if (inject->itrace_synth_opts.set && sample->aux_sample.size)
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event = perf_inject__cut_auxtrace_sample(inject, event, sample);
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return perf_event__repipe_synth(tool, event);
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}
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static int perf_event__repipe_mmap(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err;
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err = perf_event__process_mmap(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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return err;
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}
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#ifdef HAVE_JITDUMP
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static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
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u64 n = 0;
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int ret;
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/*
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* if jit marker, then inject jit mmaps and generate ELF images
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*/
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ret = jit_process(inject->session, &inject->output, machine,
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event->mmap.filename, event->mmap.pid, event->mmap.tid, &n);
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if (ret < 0)
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return ret;
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if (ret) {
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inject->bytes_written += n;
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return 0;
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}
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return perf_event__repipe_mmap(tool, event, sample, machine);
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}
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#endif
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static struct dso *findnew_dso(int pid, int tid, const char *filename,
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struct dso_id *id, struct machine *machine)
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{
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struct thread *thread;
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struct nsinfo *nsi = NULL;
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struct nsinfo *nnsi;
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struct dso *dso;
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bool vdso;
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thread = machine__findnew_thread(machine, pid, tid);
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if (thread == NULL) {
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pr_err("cannot find or create a task %d/%d.\n", tid, pid);
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return NULL;
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}
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vdso = is_vdso_map(filename);
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nsi = nsinfo__get(thread->nsinfo);
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if (vdso) {
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/* The vdso maps are always on the host and not the
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* container. Ensure that we don't use setns to look
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* them up.
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*/
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nnsi = nsinfo__copy(nsi);
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if (nnsi) {
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nsinfo__put(nsi);
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nnsi->need_setns = false;
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nsi = nnsi;
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}
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dso = machine__findnew_vdso(machine, thread);
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} else {
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dso = machine__findnew_dso_id(machine, filename, id);
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}
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if (dso) {
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nsinfo__put(dso->nsinfo);
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dso->nsinfo = nsi;
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} else
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nsinfo__put(nsi);
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thread__put(thread);
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return dso;
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}
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static int perf_event__repipe_buildid_mmap(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct dso *dso;
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dso = findnew_dso(event->mmap.pid, event->mmap.tid,
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event->mmap.filename, NULL, machine);
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if (dso && !dso->hit) {
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dso->hit = 1;
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dso__inject_build_id(dso, tool, machine, sample->cpumode, 0);
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}
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dso__put(dso);
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return perf_event__repipe(tool, event, sample, machine);
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}
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static int perf_event__repipe_mmap2(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err;
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err = perf_event__process_mmap2(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
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struct dso *dso;
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dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
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event->mmap2.filename, NULL, machine);
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if (dso) {
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/* mark it not to inject build-id */
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dso->hit = 1;
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}
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dso__put(dso);
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}
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return err;
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}
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#ifdef HAVE_JITDUMP
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static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct perf_inject *inject = container_of(tool, struct perf_inject, tool);
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u64 n = 0;
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int ret;
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/*
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* if jit marker, then inject jit mmaps and generate ELF images
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*/
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ret = jit_process(inject->session, &inject->output, machine,
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event->mmap2.filename, event->mmap2.pid, event->mmap2.tid, &n);
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if (ret < 0)
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return ret;
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if (ret) {
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inject->bytes_written += n;
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return 0;
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}
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return perf_event__repipe_mmap2(tool, event, sample, machine);
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}
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#endif
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static int perf_event__repipe_buildid_mmap2(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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struct dso_id dso_id = {
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.maj = event->mmap2.maj,
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.min = event->mmap2.min,
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.ino = event->mmap2.ino,
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.ino_generation = event->mmap2.ino_generation,
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};
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struct dso *dso;
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if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
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/* cannot use dso_id since it'd have invalid info */
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dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
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event->mmap2.filename, NULL, machine);
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if (dso) {
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/* mark it not to inject build-id */
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dso->hit = 1;
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}
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dso__put(dso);
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return 0;
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}
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dso = findnew_dso(event->mmap2.pid, event->mmap2.tid,
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event->mmap2.filename, &dso_id, machine);
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if (dso && !dso->hit) {
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dso->hit = 1;
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dso__inject_build_id(dso, tool, machine, sample->cpumode,
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event->mmap2.flags);
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}
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dso__put(dso);
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perf_event__repipe(tool, event, sample, machine);
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return 0;
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}
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static int perf_event__repipe_fork(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err;
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err = perf_event__process_fork(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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return err;
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}
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static int perf_event__repipe_comm(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err;
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err = perf_event__process_comm(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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return err;
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}
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static int perf_event__repipe_namespaces(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err = perf_event__process_namespaces(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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return err;
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}
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static int perf_event__repipe_exit(struct perf_tool *tool,
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union perf_event *event,
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struct perf_sample *sample,
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struct machine *machine)
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{
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int err;
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err = perf_event__process_exit(tool, event, sample, machine);
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perf_event__repipe(tool, event, sample, machine);
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return err;
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}
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static int perf_event__repipe_tracing_data(struct perf_session *session,
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union perf_event *event)
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{
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int err;
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perf_event__repipe_synth(session->tool, event);
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err = perf_event__process_tracing_data(session, event);
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return err;
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}
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|
|
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 parse_vm_time_correlation(const struct option *opt, const char *str, int unset)
|
|
{
|
|
struct perf_inject *inject = opt->value;
|
|
const char *args;
|
|
char *dry_run;
|
|
|
|
if (unset)
|
|
return 0;
|
|
|
|
inject->itrace_synth_opts.set = true;
|
|
inject->itrace_synth_opts.vm_time_correlation = true;
|
|
inject->in_place_update = true;
|
|
|
|
if (!str)
|
|
return 0;
|
|
|
|
dry_run = skip_spaces(str);
|
|
if (!strncmp(dry_run, "dry-run", strlen("dry-run"))) {
|
|
inject->itrace_synth_opts.vm_tm_corr_dry_run = true;
|
|
inject->in_place_update_dry_run = true;
|
|
args = dry_run + strlen("dry-run");
|
|
} else {
|
|
args = str;
|
|
}
|
|
|
|
inject->itrace_synth_opts.vm_tm_corr_args = strdup(args);
|
|
|
|
return inject->itrace_synth_opts.vm_tm_corr_args ? 0 : -ENOMEM;
|
|
}
|
|
|
|
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 = inject->in_place_update ? -1 : 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.vm_time_correlation) {
|
|
session->itrace_synth_opts = &inject->itrace_synth_opts;
|
|
memset(&inject->tool, 0, sizeof(inject->tool));
|
|
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.auxtrace_error = perf_event__process_auxtrace_error;
|
|
inject->tool.ordered_events = true;
|
|
inject->tool.ordering_requires_timestamps = true;
|
|
} 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.aux_output_hw_id = 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 (!inject->is_pipe && !inject->in_place_update)
|
|
lseek(fd, output_data_offset, SEEK_SET);
|
|
|
|
ret = perf_session__process_events(session);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!inject->is_pipe && !inject->in_place_update) {
|
|
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,
|
|
.aux_output_hw_id = 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,
|
|
.use_stdio = true,
|
|
},
|
|
};
|
|
struct perf_data data = {
|
|
.mode = PERF_DATA_MODE_READ,
|
|
.use_stdio = true,
|
|
};
|
|
int ret;
|
|
bool repipe = true;
|
|
|
|
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('k', "vmlinux", &symbol_conf.vmlinux_name,
|
|
"file", "vmlinux pathname"),
|
|
OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
|
|
"don't load vmlinux even if found"),
|
|
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_CALLBACK_OPTARG(0, "vm-time-correlation", &inject, NULL, "opts",
|
|
"correlate time between VM guests and the host",
|
|
parse_vm_time_correlation),
|
|
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 (symbol__validate_sym_arguments())
|
|
return -1;
|
|
|
|
if (inject.in_place_update) {
|
|
if (!strcmp(inject.input_name, "-")) {
|
|
pr_err("Input file name required for in-place updating\n");
|
|
return -1;
|
|
}
|
|
if (strcmp(inject.output.path, "-")) {
|
|
pr_err("Output file name must not be specified for in-place updating\n");
|
|
return -1;
|
|
}
|
|
if (!data.force && !inject.in_place_update_dry_run) {
|
|
pr_err("The input file would be updated in place, "
|
|
"the --force option is required.\n");
|
|
return -1;
|
|
}
|
|
if (!inject.in_place_update_dry_run)
|
|
data.in_place_update = true;
|
|
} else if (perf_data__open(&inject.output)) {
|
|
perror("failed to create output file");
|
|
return -1;
|
|
}
|
|
|
|
data.path = inject.input_name;
|
|
if (!strcmp(inject.input_name, "-") || inject.output.is_pipe) {
|
|
inject.is_pipe = true;
|
|
/*
|
|
* Do not repipe header when input is a regular file
|
|
* since either it can rewrite the header at the end
|
|
* or write a new pipe header.
|
|
*/
|
|
if (strcmp(inject.input_name, "-"))
|
|
repipe = false;
|
|
}
|
|
|
|
inject.session = __perf_session__new(&data, repipe,
|
|
perf_data__fd(&inject.output),
|
|
&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 (!data.is_pipe && inject.output.is_pipe) {
|
|
ret = perf_header__write_pipe(perf_data__fd(&inject.output));
|
|
if (ret < 0) {
|
|
pr_err("Couldn't write a new pipe header.\n");
|
|
goto out_delete;
|
|
}
|
|
|
|
ret = perf_event__synthesize_for_pipe(&inject.tool,
|
|
inject.session,
|
|
&inject.output,
|
|
perf_event__repipe);
|
|
if (ret < 0)
|
|
goto out_delete;
|
|
}
|
|
|
|
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);
|
|
free(inject.itrace_synth_opts.vm_tm_corr_args);
|
|
return ret;
|
|
}
|