From 499838340aa7f0e7bcf6240570e74f5a6d217cc3 Mon Sep 17 00:00:00 2001
From: "Frank Ch. Eigler" <fche@elastic.org>
Date: Tue, 9 Dec 2008 17:23:18 -0500
Subject: add some more wallpaper protection against cpu frequency = 0 in
 gettimeofday_* internals

---
 runtime/time.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'runtime/time.c')

diff --git a/runtime/time.c b/runtime/time.c
index 6b01cebe..15e205dd 100644
--- a/runtime/time.c
+++ b/runtime/time.c
@@ -296,7 +296,6 @@ _stp_gettimeofday_ns(void)
     }
 
     delta = get_cycles() - last;
-
     preempt_enable_no_resched();
 
 #if defined (__s390__) || defined (__s390x__)
@@ -317,6 +316,8 @@ _stp_gettimeofday_ns(void)
     // Verify units:
     //   (D cycles) * (1E6 ns/ms) / (F cycles/ms [kHz]) = ns
     delta *= NSEC_PER_MSEC;
+    if (freq == 0)
+      return 0;
     do_div(delta, freq);
 #endif
 
-- 
cgit