Commit aabae165 authored Oct 10, 2016 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Oct 24, 2016

perf header: Display missing features



Display missing features in header info, like:

  $ perf report --header-only
  # ========
  # captured on: Mon Oct 10 09:39:47 2016
  ...
  # missing features: HEADER_TRACING_DATA HEADER_CPU_TOPOLOGY ...

To help in diagnosing problems.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-bh5gp84gobdmyl345dcp64se@git.kernel.org


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

parent f45f5615

tools/perf/util/header.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -2251,7 +2251,7 @@ int perf_header__fprintf_info(struct perf_session session, FILE fp, bool full)
		struct perf_header *header = &session->header;
		int fd = perf_data_file__fd(session->file);
		struct stat st;
		int ret;
		int ret, bit;

		hd.fp = fp;
		hd.full = full;
		@@ -2264,6 +2264,14 @@ int perf_header__fprintf_info(struct perf_session session, FILE fp, bool full)

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

		fprintf(fp, "# missing features: ");
		for_each_clear_bit(bit, header->adds_features, HEADER_LAST_FEATURE) {
		if (bit)
		fprintf(fp, "%s ", feat_ops[bit].name);
		}

		fprintf(fp, "\n");
		return 0;
		}

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