linux-kernel - Re: [RFCv3][PATCH 4/4] show page size in /proc/$pid/numa

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Message-ID: <1317832083.2473.58.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Wed, 05 Oct 2011 18:28:03 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Dave Hansen <dave@...ux.vnet.ibm.com>
Cc:	David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	James.Bottomley@...senpartnership.com, hpa@...or.com
Subject: Re: [RFCv3][PATCH 4/4] show page size in /proc/$pid/numa_maps

Le mercredi 05 octobre 2011 à 08:22 -0700, Dave Hansen a écrit :
> On Wed, 2011-10-05 at 09:09 +0200, Eric Dumazet wrote:
> > By the way, "pagesize=4KiB" are just noise if you ask me, thats the
> > default PAGE_SIZE. This also breaks old scripts :)
> 
> How does it break old scripts?
> 

Old scripts just parse numa_maps, and on typical machines where
hugepages are not used, they dont have to care about page size.
They assume pages are 4KB.

Adding a new word (pagesize=...) might break them, but personally I dont
care.



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