netdev - Re: [PATCH net-next] tcp: remove conditional branches from tcp_mstamp

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Date:   Sat, 23 Mar 2019 21:44:45 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net-next] tcp: remove conditional branches from
 tcp_mstamp_refresh()

From: Eric Dumazet <edumazet@...gle.com>
Date: Fri, 22 Mar 2019 06:26:29 -0700

> tcp_clock_ns() (aka ktime_get_ns()) is using monotonic clock,
> so the checks we had in tcp_mstamp_refresh() are no longer
> relevant.
> 
> This patch removes cpu stall (when the cache line is not hot)
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.