linux-kernel - Re: [PATCH net-next] net: hns: optimize XGE capability by reducing cpu usage

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Message-ID: <1449459120.7356.14.camel@perches.com>
Date:	Sun, 06 Dec 2015 19:32:00 -0800
From:	Joe Perches <joe@...ches.com>
To:	David Miller <davem@...emloft.net>, yankejian@...wei.com
Cc:	lisheng011@...wei.com, lipeng321@...wei.com,
	salil.mehta@...wei.com, huangdaode@...ilicon.com,
	xuwei5@...ilicon.com, liguozhu@...wei.com, haifeng.wei@...wei.com,
	yisen.zhuang@...wei.com, linuxarm@...wei.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: hns: optimize XGE capability by reducing
 cpu usage

On Sun, 2015-12-06 at 22:29 -0500, David Miller wrote:
> From: yankejian <yankejian@...wei.com>
> Date: Sat, 5 Dec 2015 15:32:29 +0800
> 
> > +#if (PAGE_SIZE < 8192)
> > +     if (hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048) {
> > +             truesize = hnae_buf_size(ring);
> > +     } else {
> > +             truesize = ALIGN(size, L1_CACHE_BYTES);
> > +             last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
> > +     }
> > +
> > +#else
> > +             truesize = ALIGN(size, L1_CACHE_BYTES);
> > +             last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
> > +#endif
> 
> This is not indented properly, and it looks terrible.

And it makes one curious as to why last_offset isn't set
in the first block.

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