Commit e971a5a8 authored Mar 07, 2018 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Mar 08, 2018

perf report: Display perf.data header info



Display more header info from perf.data file, following values:

  $ perf report -i perf.data --header-only
  ...
  # header version : 1
  # data offset    : 424
  # data size      : 3364280
  # feat offset    : 3364704

It's handy for debuging.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180307155020.32613-3-jolsa@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 8ef278bb

tools/perf/util/header.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -2320,6 +2320,11 @@ int perf_header__fprintf_info(struct perf_session session, FILE fp, bool full)

		fprintf(fp, "# captured on : %s", ctime(&st.st_ctime));

		fprintf(fp, "# header version : %u\n", header->version);
		fprintf(fp, "# data offset : %" PRIu64 "\n", header->data_offset);
		fprintf(fp, "# data size : %" PRIu64 "\n", header->data_size);
		fprintf(fp, "# feat offset : %" PRIu64 "\n", header->feat_offset);

		perf_header__process_sections(header, fd, &hd,
		perf_file_section__fprintf_info);