netdev - Re: [PATCH net-next] tcp: switch pacing timer to softirq based hrtimer

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Message-ID: <604c253d-a6d9-99ff-317b-b2ca2ffff54a@gmail.com>
Date:   Thu, 10 May 2018 13:55:00 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>,
        "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] tcp: switch pacing timer to softirq based
 hrtimer



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.