From 0762b6f55b6c9416c8c9cddb537728a67c226123 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 16 Jul 2020 12:01:44 +0200
Subject: [KERNEL] do_gettimeofday was removed in 5.0

---
 src/kernel/net.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/kernel/net.c b/src/kernel/net.c
index e8c7cad..b229164 100644
--- a/src/kernel/net.c
+++ b/src/kernel/net.c
@@ -401,7 +401,7 @@ static void dnbd3_panic_worker(struct work_struct *work)
 static int dnbd3_meassure_rtt(struct dnbd3_device *dev,
 		struct dnbd3_server *server)
 {
-	struct timeval start, end;
+	u64 start, end;
 	dnbd3_reply_t reply;
 	int result;
 	uint64_t rtt = RTT_UNREACHABLE;
@@ -443,7 +443,7 @@ static int dnbd3_meassure_rtt(struct dnbd3_device *dev,
 	}
 
 
-	do_gettimeofday(&start);
+	start = ktime_get_ns();
 	result = dnbd3_send_request_cmd(&sock, CMD_GET_BLOCK);
 	if (result <= 0) {
 		error_sock(&sock, "request test block failed in rtt measurement");
@@ -461,10 +461,9 @@ static int dnbd3_meassure_rtt(struct dnbd3_device *dev,
 		error_sock(&sock, "receive test block failed in rtt measurement");
 		goto error;
 	}
-	do_gettimeofday(&end); // end rtt measurement
+	end = ktime_get_ns(); // end rtt measurement
 
-	rtt = (uint64_t)((end.tv_sec - start.tv_sec) * 1000000ull
-			+ (end.tv_usec - start.tv_usec));
+	rtt = (end - start) / 1000; // ns to us
 
 
 error:
-- 
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