From aabae165759994d1b9bca1fac7759f1d8bef5dad Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@kernel.org>
Date: Mon, 10 Oct 2016 09:35:50 +0200
Subject: [PATCH] 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>
---
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;
}