userspace/libwr: use monotonic clock in shw_udelay_init (util.c)

Proper timeout will not work when clock is set to the past. Check commit: userspace/snmpd: bugfix 1164, replace time() with monotinic version Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/libwr: use monotonic clock in shw_udelay_init (util.c)
Proper timeout will not work when clock is set to the past. Check commit: userspace/snmpd: bugfix 1164, replace time() with monotinic version Signed-off-by: Adam Wujek <adam.wujek@cern.ch>
3a270395 · Adam Wujek · 14a94373 · 3a270395
Commit 3a270395 authored Feb 15, 2016 by Adam Wujek 💬
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util.c userspace/libwr/util.c +4 -5

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--- a/userspace/libwr/util.c
+++ b/userspace/libwr/util.c
@@ -12,14 +12,13 @@ void shw_udelay_init(void)
 {
 	volatile int i;
 	int j, cur, min = 0;
-	struct timeval tv1, tv2;
+	uint64_t tv1, tv2;
 	for (j = 0; j < 10; j++) {
-		gettimeofday(&tv1, NULL);
+		tv1 = get_monotonic_tics();
 		for (i = 0; i < 100*1000; i++)
 			;
-		gettimeofday(&tv2, NULL);
-		cur = (tv2.tv_sec - tv1.tv_sec) * 1000 * 1000
-			+ tv2.tv_usec - tv1.tv_usec;
+		tv2 = get_monotonic_tics();
+		cur = tv2 - tv1;
 		/* keep minimum time, assuming we were scheduled-off less */
 		if (!min || cur < min)
 			min = cur;