From 500738e0cf01b79b3c226b9f781099697d5261d7 Mon Sep 17 00:00:00 2001
From: Christopher Wellons <wellons@nullprogram.com>
Date: Sun, 3 Feb 2019 15:45:31 -0500
Subject: [PATCH] Use vDSO for the clock on Linux

---
 endlessh.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/endlessh.c b/endlessh.c
index 43c517a..f947fa7 100644
--- a/endlessh.c
+++ b/endlessh.c
@@ -29,7 +29,11 @@ static long long
 uepoch(void)
 {
     struct timespec tv;
+#ifdef __linux__
+    clock_gettime(CLOCK_REALTIME_COARSE, &tv);
+#else
     clock_gettime(CLOCK_REALTIME, &tv);
+#endif
     return tv.tv_sec * 1000ULL + tv.tv_nsec / 1000000ULL;
 }