From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH net-next] tcp: switch pacing timer to softirq based
 hrtimer
Date: Thu, 10 May 2018 13:55:00 -0700
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On 05/10/2018 12:49 PM, Eric Dumazet wrote:
> linux-4.16 got support for softirq based hrtimers.
> TCP can switch its pacing hrtimer to this variant, since this
> avoids going through a tasklet and some atomic operations.
> 

I need to send a V2, adding a test of hrtimer_cancel() return value
in tcp_clear_xmit_timers() to eventually release the socket reference.