netdev - Re: [PATCH v5 net-next 3/3] net: mvneta: get rid of huge dma sync in mvneta_rx

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Message-ID: <20191120184930.421e7b82@carbon>
Date:   Wed, 20 Nov 2019 18:49:30 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     Lorenzo Bianconi <lorenzo@...nel.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        ilias.apalodimas@...aro.org, lorenzo.bianconi@...hat.com,
        mcroce@...hat.com, jonathan.lemon@...il.com, brouer@...hat.com
Subject: Re: [PATCH v5 net-next 3/3] net: mvneta: get rid of huge dma sync
 in mvneta_rx_refill

On Wed, 20 Nov 2019 16:54:19 +0200
Lorenzo Bianconi <lorenzo@...nel.org> wrote:

> Get rid of costly dma_sync_single_for_device in mvneta_rx_refill
> since now the driver can let page_pool API to manage needed DMA
> sync with a proper size.
> 
> - XDP_DROP DMA sync managed by mvneta driver:	~420Kpps
> - XDP_DROP DMA sync managed by page_pool API:	~585Kpps
> 
> Tested-by: Matteo Croce <mcroce@...hat.com>

Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer