| From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 11/37] perf header: Display missing features | Date | Mon, 24 Oct 2016 13:20:31 -0300 |
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From: Jiri Olsa <jolsa@kernel.org>
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> --- tools/perf/util/header.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 05f562760958..d6310c6dace5 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -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; } -- 2.7.4
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