Re: [PATCH v2 02/15] perf report: output trace file name in raw trace dump

Namhyung Kim
2020-10-22T04:29:30Z

On Thu, Oct 22, 2020 at 12:57 AM Alexey Budankov
<alexey.budankov@linux.intel.com> wrote:
>
>
> Print path and name of a trace file into raw dump (-D)
> <file_offset>@<path/file>. Print offset of PERF_RECORD_COMPRESSED
> record instead of zero for decompressed records:
> 0x2226a@perf.data [0x30]: event: 9
> or
> 0x15cc36@perf.data/data.7 [0x30]: event: 9
>
> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>

Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks
Namhyung

> ---
> tools/perf/builtin-inject.c | 3 +-
> tools/perf/util/session.c | 75 ++++++++++++++++++++++---------------
> tools/perf/util/tool.h | 3 +-
> 3 files changed, 48 insertions(+), 33 deletions(-)
>
> diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
> index 452a75fe68e5..037f8a98220c 100644
> --- a/tools/perf/builtin-inject.c
> +++ b/tools/perf/builtin-inject.c
> @@ -106,7 +106,8 @@ static int perf_event__repipe_op2_synth(struct perf_session *session,
>
> static int perf_event__repipe_op4_synth(struct perf_session *session,
> union perf_event *event,
> - u64 data __maybe_unused)
> + u64 data __maybe_unused,
> + const char *str __maybe_unused)
> {
> return perf_event__repipe_synth(session->tool, event);
> }
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> index 4478ddae485b..6f09d506b2f6 100644
> --- a/tools/perf/util/session.c
> +++ b/tools/perf/util/session.c
> @@ -36,7 +36,8 @@
>
> #ifdef HAVE_ZSTD_SUPPORT
> static int perf_session__process_compressed_event(struct perf_session *session,
> - union perf_event *event, u64 file_offset)
> + union perf_event *event, u64 file_offset,
> + const char *file_path)
> {
> void *src;
> size_t decomp_size, src_size;
> @@ -58,6 +59,7 @@ static int perf_session__process_compressed_event(struct perf_session *session,
> }
>
> decomp->file_pos = file_offset;
> + decomp->file_path = file_path;
> decomp->mmap_len = mmap_len;
> decomp->head = 0;
>
> @@ -98,7 +100,8 @@ static int perf_session__process_compressed_event(struct perf_session *session,
> static int perf_session__deliver_event(struct perf_session *session,
> union perf_event *event,
> struct perf_tool *tool,
> - u64 file_offset);
> + u64 file_offset,
> + const char *file_path);
>
> static int perf_session__open(struct perf_session *session)
> {
> @@ -180,7 +183,8 @@ static int ordered_events__deliver_event(struct ordered_events *oe,
> ordered_events);
>
> return perf_session__deliver_event(session, event->event,
> - session->tool, event->file_offset);
> + session->tool, event->file_offset,
> + event->file_path);
> }
>
> struct perf_session *perf_session__new(struct perf_data *data,
> @@ -452,7 +456,8 @@ static int process_stat_round_stub(struct perf_session *perf_session __maybe_unu
>
> static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused,
> union perf_event *event __maybe_unused,
> - u64 file_offset __maybe_unused)
> + u64 file_offset __maybe_unused,
> + const char *file_path __maybe_unused)
> {
> dump_printf(": unhandled!\n");
> return 0;
> @@ -1227,13 +1232,14 @@ static void sample_read__printf(struct perf_sample *sample, u64 read_format)
> }
>
> static void dump_event(struct evlist *evlist, union perf_event *event,
> - u64 file_offset, struct perf_sample *sample)
> + u64 file_offset, struct perf_sample *sample,
> + const char *file_path)
> {
> if (!dump_trace)
> return;
>
> - printf("\n%#" PRIx64 " [%#x]: event: %d\n",
> - file_offset, event->header.size, event->header.type);
> + printf("\n%#" PRIx64 "@%s [%#x]: event: %d\n",
> + file_offset, file_path, event->header.size, event->header.type);
>
> trace_event(event);
> if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
> @@ -1424,12 +1430,13 @@ static int machines__deliver_event(struct machines *machines,
> struct evlist *evlist,
> union perf_event *event,
> struct perf_sample *sample,
> - struct perf_tool *tool, u64 file_offset)
> + struct perf_tool *tool, u64 file_offset,
> + const char *file_path)
> {
> struct evsel *evsel;
> struct machine *machine;
>
> - dump_event(evlist, event, file_offset, sample);
> + dump_event(evlist, event, file_offset, sample, file_path);
>
> evsel = perf_evlist__id2evsel(evlist, sample->id);
>
> @@ -1506,7 +1513,8 @@ static int machines__deliver_event(struct machines *machines,
> static int perf_session__deliver_event(struct perf_session *session,
> union perf_event *event,
> struct perf_tool *tool,
> - u64 file_offset)
> + u64 file_offset,
> + const char *file_path)
> {
> struct perf_sample sample;
> int ret;
> @@ -1524,7 +1532,7 @@ static int perf_session__deliver_event(struct perf_session *session,
> return 0;
>
> ret = machines__deliver_event(&session->machines, session->evlist,
> - event, &sample, tool, file_offset);
> + event, &sample, tool, file_offset, file_path);
>
> if (dump_trace && sample.aux_sample.size)
> auxtrace__dump_auxtrace_sample(session, &sample);
> @@ -1534,7 +1542,8 @@ static int perf_session__deliver_event(struct perf_session *session,
>
> static s64 perf_session__process_user_event(struct perf_session *session,
> union perf_event *event,
> - u64 file_offset)
> + u64 file_offset,
> + const char *file_path)
> {
> struct ordered_events *oe = &session->ordered_events;
> struct perf_tool *tool = session->tool;
> @@ -1544,7 +1553,7 @@ static s64 perf_session__process_user_event(struct perf_session *session,
>
> if (event->header.type != PERF_RECORD_COMPRESSED ||
> tool->compressed == perf_session__process_compressed_event_stub)
> - dump_event(session->evlist, event, file_offset, &sample);
> + dump_event(session->evlist, event, file_offset, &sample, file_path);
>
> /* These events are processed right away */
> switch (event->header.type) {
> @@ -1603,9 +1612,9 @@ static s64 perf_session__process_user_event(struct perf_session *session,
> case PERF_RECORD_HEADER_FEATURE:
> return tool->feature(session, event);
> case PERF_RECORD_COMPRESSED:
> - err = tool->compressed(session, event, file_offset);
> + err = tool->compressed(session, event, file_offset, file_path);
> if (err)
> - dump_event(session->evlist, event, file_offset, &sample);
> + dump_event(session->evlist, event, file_offset, &sample, file_path);
> return err;
> default:
> return -EINVAL;
> @@ -1622,9 +1631,9 @@ int perf_session__deliver_synth_event(struct perf_session *session,
> events_stats__inc(&evlist->stats, event->header.type);
>
> if (event->header.type >= PERF_RECORD_USER_TYPE_START)
> - return perf_session__process_user_event(session, event, 0);
> + return perf_session__process_user_event(session, event, 0, NULL);
>
> - return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
> + return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0, NULL);
> }
>
> static void event_swap(union perf_event *event, bool sample_id_all)
> @@ -1720,7 +1729,8 @@ int perf_session__peek_events(struct perf_session *session, u64 offset,
> }
>
> static s64 perf_session__process_event(struct perf_session *session,
> - union perf_event *event, u64 file_offset)
> + union perf_event *event, u64 file_offset,
> + const char *file_path)
> {
> struct evlist *evlist = session->evlist;
> struct perf_tool *tool = session->tool;
> @@ -1735,7 +1745,7 @@ static s64 perf_session__process_event(struct perf_session *session,
> events_stats__inc(&evlist->stats, event->header.type);
>
> if (event->header.type >= PERF_RECORD_USER_TYPE_START)
> - return perf_session__process_user_event(session, event, file_offset);
> + return perf_session__process_user_event(session, event, file_offset, file_path);
>
> if (tool->ordered_events) {
> u64 timestamp = -1ULL;
> @@ -1749,7 +1759,7 @@ static s64 perf_session__process_event(struct perf_session *session,
> return ret;
> }
>
> - return perf_session__deliver_event(session, event, tool, file_offset);
> + return perf_session__deliver_event(session, event, tool, file_offset, file_path);
> }
>
> void perf_event_header__bswap(struct perf_event_header *hdr)
> @@ -1987,7 +1997,8 @@ static int __perf_session__process_pipe_events(struct perf_session *session)
> }
> }
>
> - if ((skip = perf_session__process_event(session, event, head)) < 0) {
> + skip = perf_session__process_event(session, event, head, "pipe");
> + if (skip < 0) {
> pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
> head, event->header.size, event->header.type);
> err = -EINVAL;
> @@ -2068,7 +2079,7 @@ fetch_decomp_event(u64 head, size_t mmap_size, char *buf, bool needs_swap)
> static int __perf_session__process_decomp_events(struct perf_session *session)
> {
> s64 skip;
> - u64 size, file_pos = 0;
> + u64 size;
> struct decomp *decomp = session->decomp_last;
>
> if (!decomp)
> @@ -2082,9 +2093,9 @@ static int __perf_session__process_decomp_events(struct perf_session *session)
> break;
>
> size = event->header.size;
> -
> - if (size < sizeof(struct perf_event_header) ||
> - (skip = perf_session__process_event(session, event, file_pos)) < 0) {
> + skip = perf_session__process_event(session, event, decomp->file_pos,
> + decomp->file_path);
> + if (size < sizeof(struct perf_event_header) || skip < 0) {
> pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
> decomp->file_pos + decomp->head, event->header.size, event->header.type);
> return -EINVAL;
> @@ -2115,7 +2126,8 @@ struct reader;
>
> typedef s64 (*reader_cb_t)(struct perf_session *session,
> union perf_event *event,
> - u64 file_offset);
> + u64 file_offset,
> + const char *file_path);
>
> struct reader {
> int fd;
> @@ -2198,9 +2210,9 @@ reader__process_events(struct reader *rd, struct perf_session *session,
> skip = -EINVAL;
>
> if (size < sizeof(struct perf_event_header) ||
> - (skip = rd->process(session, event, file_pos)) < 0) {
> - pr_err("%#" PRIx64 " [%#x]: failed to process type: %d [%s]\n",
> - file_offset + head, event->header.size,
> + (skip = rd->process(session, event, file_pos, rd->path)) < 0) {
> + pr_err("%#" PRIx64 " [%s] [%#x]: failed to process type: %d [%s]\n",
> + file_offset + head, rd->path, event->header.size,
> event->header.type, strerror(-skip));
> err = skip;
> goto out;
> @@ -2230,9 +2242,10 @@ reader__process_events(struct reader *rd, struct perf_session *session,
>
> static s64 process_simple(struct perf_session *session,
> union perf_event *event,
> - u64 file_offset)
> + u64 file_offset,
> + const char *file_path)
> {
> - return perf_session__process_event(session, event, file_offset);
> + return perf_session__process_event(session, event, file_offset, file_path);
> }
>
> static int __perf_session__process_events(struct perf_session *session)
> diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
> index bbbc0dcd461f..c966531d3eca 100644
> --- a/tools/perf/util/tool.h
> +++ b/tools/perf/util/tool.h
> @@ -28,7 +28,8 @@ typedef int (*event_attr_op)(struct perf_tool *tool,
>
> typedef int (*event_op2)(struct perf_session *session, union perf_event *event);
> typedef s64 (*event_op3)(struct perf_session *session, union perf_event *event);
> -typedef int (*event_op4)(struct perf_session *session, union perf_event *event, u64 data);
> +typedef int (*event_op4)(struct perf_session *session, union perf_event *event, u64 data,
> + const char *str);
>
> typedef int (*event_oe)(struct perf_tool *tool, union perf_event *event,
> struct ordered_events *oe);
> --
> 2.24.1
>