netdev - Re: [PATCHv2 net] xen-netfront: request Tx response events more often

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Message-Id: <20160128.160931.2281411720894108965.davem@davemloft.net>
Date:	Thu, 28 Jan 2016 16:09:31 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	david.vrabel@...rix.com
Cc:	netdev@...r.kernel.org, xen-devel@...ts.xenproject.org,
	konrad.wilk@...cle.com, boris.ostrovsky@...cle.com,
	malcolm.crossley@...rix.com
Subject: Re: [PATCHv2 net] xen-netfront: request Tx response events more
 often

From: David Vrabel <david.vrabel@...rix.com>
Date: Tue, 26 Jan 2016 17:12:44 +0000

> From: Malcolm Crossley <malcolm.crossley@...rix.com>
> 
> Trying to batch Tx response events results in poor performance because
> this delays freeing the transmitted skbs.
> 
> Instead use the standard RING_FINAL_CHECK_FOR_RESPONSES() macro to be
> notified once the next Tx response is placed on the ring.
> 
> Signed-off-by: Malcolm Crossley <malcolm.crossley@...rix.com>
> Signed-off-by: David Vrabel <david.vrabel@...rix.com>

Applied.