netdev - Re: [PATCH net-next] sfc: don't rearm interrupts if busy polling

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Message-Id: <20170206.115947.1451263729529424407.davem@davemloft.net>
Date:   Mon, 06 Feb 2017 11:59:47 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     bkenward@...arflare.com
Cc:     netdev@...r.kernel.org, linux-net-drivers@...arflare.com,
        edumazet@...gle.com
Subject: Re: [PATCH net-next] sfc: don't rearm interrupts if busy polling

From: Bert Kenward <bkenward@...arflare.com>
Date: Mon, 6 Feb 2017 16:50:55 +0000

> Since commit 364b6055738b ("net: busy-poll: return busypolling status
> to drivers"), napi_complete_done() returns a boolean that can be used
> by drivers to conditionally rearm interrupts.
> 
> Testing with a 7142 shows a small latency improvement of ~100 ns.
> 
> Signed-off-by: Bert Kenward <bkenward@...arflare.com>

Applied.