From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: /proc/stat vs. failed order-4 allocation
Date: Wed, 21 May 2014 07:32:29 -0700
Message-ID: <20140521143229.GA32011@infradead.org>
References: <20140521122521.GB7471@osiris>
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Cc: Andrew Morton <akpm@linux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Andrea Righi <andrea@betterlinux.com>,
	Eric Dumazet <eric.dumazet@gmail.com>,
	linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	Hendrik Brueckner <brueckner@linux.vnet.ibm.com>,
	Thorsten Diehl <thorsten.diehl@de.ibm.com>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
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On Wed, May 21, 2014 at 02:25:21PM +0200, Heiko Carstens wrote:
> Hi all,
> 
> I'm just wondering why /proc/stat is a single_open() seq_file and not a
> regular seq_file with an iterator (say 48 online cpus for each iteration
> or something similar).

Probably because no one sent a patch for it. I'm pretty sure it used the
even more horrible old proc ops before and was converted in batch with
various other files.