netdev - RE: [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet

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Message-ID: <AM4PR04MB160440B1F671B4C86B238C2DECB90@AM4PR04MB1604.eurprd04.prod.outlook.com>
Date:   Wed, 9 Nov 2016 17:16:12 +0000
From:   Madalin-Cristian Bucur <madalin.bucur@....com>
To:     David Miller <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "oss@...error.net" <oss@...error.net>,
        "ppc@...dchasers.com" <ppc@...dchasers.com>,
        "joe@...ches.com" <joe@...ches.com>,
        "pebolle@...cali.nl" <pebolle@...cali.nl>,
        "joakim.tjernlund@...nsmode.se" <joakim.tjernlund@...nsmode.se>
Subject: RE: [PATCH net-next v6 02/10] dpaa_eth: add support for DPAA Ethernet

> From: Madalin-Cristian Bucur
> Sent: Monday, November 07, 2016 5:43 PM
> 
> > From: David Miller [mailto:davem@...emloft.net]
> > Sent: Thursday, November 03, 2016 9:58 PM
> >
> > From: Madalin Bucur <madalin.bucur@....com>
> > Date: Wed, 2 Nov 2016 22:17:26 +0200
> >
> > > This introduces the Freescale Data Path Acceleration Architecture
<snip>

> > > +	int numstats = sizeof(struct rtnl_link_stats64) / sizeof(u64);
> >  ...
> > > +		cpustats = (u64 *)&percpu_priv->stats;
> > > +
> > > +		for (j = 0; j < numstats; j++)
> > > +			netstats[j] += cpustats[j];
> >
> > This is a memcpy() on well-typed datastructures which requires no
> > casting or special handling whatsoever, so use memcpy instead of
> > needlessly open coding the operation.
> 
> Will fix.

Took a second look at this, it's not copying but adding the percpu
statistics into consolidated results.

Madalin