commit 42ec5758abe080ab5e6d0e3cbe379308534bd133
author Jens Axboe <axboe@fb.com> Mon Dec 15 19:54:57 2014 -0700
committer Mohamad Ayyash <mkayyash@google.com> Fri Mar 06 17:58:08 2015 -0800
tree ebb6ef9b4536dd161e79d6235eca0dfd3be523a6
parent 581b5df3b18dd95d77efad330e7f4c811682c76b

backend: use monotonic clock for ETA, if we have it

Signed-off-by: Jens Axboe <axboe@fb.com>

backend.c

diff --git a/backend.c b/backend.c
index f1def38..3df0133 100644
--- a/backend.c
+++ b/backend.c
@@ -2104,11 +2104,19 @@
 		uint64_t sec = DISK_UTIL_MSEC / 1000;
 		uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
 		struct timespec ts;
+
+#if defined(CONFIG_CLOCK_MONOTONIC)
+		clock_gettime(CLOCK_MONOTONIC, &ts);
+		ts.tv_sec += sec;
+		ts.tv_nsec += nsec;
+#else
 		struct timeval tv;
 
 		gettimeofday(&tv, NULL);
 		ts.tv_sec = tv.tv_sec + sec;
 		ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
+#endif
+
 		if (ts.tv_nsec >= 1000000000ULL) {
 			ts.tv_nsec -= 1000000000ULL;
 			ts.tv_sec++;