linux-kernel - [RFC PATCH v1 36/37] perf test/evlist-open-close: use inline func to convert timeval to usec

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Message-Id: <b95035ec4a125355be8ea843f7275c4580da6398.1629490974.git.rickyman7@gmail.com>
Date:   Sat, 21 Aug 2021 11:19:42 +0200
From:   Riccardo Mancini <rickyman7@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ian Rogers <irogers@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Riccardo Mancini <rickyman7@...il.com>
Subject: [RFC PATCH v1 36/37] perf test/evlist-open-close: use inline func to convert timeval to usec

This patch introduces a new inline function to convert a timeval to
usec.
This function will be used also in the next patch.

Signed-off-by: Riccardo Mancini <rickyman7@...il.com>
---
 tools/perf/bench/evlist-open-close.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/perf/bench/evlist-open-close.c b/tools/perf/bench/evlist-open-close.c
index c18aa85725281795..00d0aef564f80d44 100644
--- a/tools/perf/bench/evlist-open-close.c
+++ b/tools/perf/bench/evlist-open-close.c
@@ -26,6 +26,11 @@ static int iterations = 100;
 static int nr_events = 1;
 static const char *event_string = "dummy";
 
+static inline u64 timeval2usec(struct timeval *tv)
+{
+	return tv->tv_sec * USEC_PER_SEC + tv->tv_usec;
+}
+
 static struct record_opts opts = {
 	.sample_time	     = true,
 	.mmap_pages	     = UINT_MAX,
@@ -197,7 +202,7 @@ static int bench_evlist_open_close__run(char *evstr)
 
 		gettimeofday(&end, NULL);
 		timersub(&end, &start, &diff);
-		runtime_us = diff.tv_sec * USEC_PER_SEC + diff.tv_usec;
+		runtime_us = timeval2usec(&diff);
 		update_stats(&time_stats, runtime_us);
 
 		evlist__delete(evlist);
-- 
2.31.1