netdev - Re: [PATCH net-next 0/5] net: busy-poll: allow preemption and other optimizations

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Message-Id: <20161116.134114.806108837136085282.davem@davemloft.net>
Date:   Wed, 16 Nov 2016 13:41:14 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, willemb@...gle.com, abelay@...gle.com,
        zach.brown@...com, tariqt@...lanox.com, Yuval.Mintz@...ium.com,
        ariel.elior@...ium.com, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 0/5] net: busy-poll: allow preemption and
 other optimizations

From: Eric Dumazet <edumazet@...gle.com>
Date: Tue, 15 Nov 2016 10:15:10 -0800

> It is time to have preemption points in sk_busy_loop() and improve
> its scalability.
> 
> Also napi_complete() and friends can tell drivers when it is safe to
> not re-enable device interrupts, saving some overhead under
> high busy polling.
> 
> mlx4 and bnx2x are changed accordingly, to show how this busy polling
> status can be exploited by drivers.
> 
> Next steps will implement Zach Brown suggestion, where NAPI polling
> would be enabled all the time for some chosen queues.
> This is needed for efficient epoll() support anyway.

Series applied, thanks a lot Eric.