linux-kernel - [PATCH v2 2/7] perf tools: Add clockid

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Date:   Wed,  5 Aug 2020 11:34:39 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>,
        David Ahern <dsahern@...il.com>,
        Geneviève Bastien <gbastien@...satic.net>,
        Wang Nan <wangnan0@...wei.com>,
        Jeremie Galarneau <jgalar@...icios.com>
Subject: [PATCH v2 2/7] perf tools: Add clockid_name function

Adding clockid_name function to get the clock name based
on its clockid. It will be used in following changes.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/clockid.c | 11 +++++++++++
 tools/perf/util/clockid.h |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/tools/perf/util/clockid.c b/tools/perf/util/clockid.c
index b7a08606dc3e..74365a5d99c1 100644
--- a/tools/perf/util/clockid.c
+++ b/tools/perf/util/clockid.c
@@ -106,3 +106,14 @@ int parse_clockid(const struct option *opt, const char *str, int unset)
 	ui__warning("unknown clockid %s, check man page\n", ostr);
 	return -1;
 }
+
+const char *clockid_name(clockid_t clk_id)
+{
+	const struct clockid_map *cm;
+
+	for (cm = clockids; cm->name; cm++) {
+		if (cm->clockid == clk_id)
+			return cm->name;
+	}
+	return "(not found)";
+}
diff --git a/tools/perf/util/clockid.h b/tools/perf/util/clockid.h
index 8e567b3ebbbd..9b49b4711c76 100644
--- a/tools/perf/util/clockid.h
+++ b/tools/perf/util/clockid.h
@@ -6,4 +6,6 @@
 struct option;
 int parse_clockid(const struct option *opt, const char *str, int unset);
 
+const char *clockid_name(clockid_t clk_id);
+
 #endif
-- 
2.25.4