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From: Christoph Hellwig <hch@infradead.org>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
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>
Subject: Re: /proc/stat vs. failed order-4 allocation
Date: Wed, 21 May 2014 07:32:29 -0700	[thread overview]
Message-ID: <20140521143229.GA32011@infradead.org> (raw)
In-Reply-To: <20140521122521.GB7471@osiris>

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.

  reply	other threads:[~2014-05-21 14:32 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-21 12:25 /proc/stat vs. failed order-4 allocation Heiko Carstens
2014-05-21 14:32 ` Christoph Hellwig [this message]
2014-05-22  3:05   ` Elliott, Robert (Server Storage)
2014-05-28  8:58   ` Heiko Carstens
2014-05-28  8:59     ` [PATCH 1/2] fs: proc/stat: use num_online_cpus() for buffer size Heiko Carstens
2014-05-28 11:06       ` Ian Kent
2014-05-28 11:14         ` Ian Kent
2014-05-28  9:01     ` [PATCH 2/2] fs: proc/stat: use usual seq_file ops rather than single_open Heiko Carstens
2014-05-28 22:37       ` Andrew Morton
2014-05-30  8:38         ` Heiko Carstens
2014-05-30 11:36           ` [PATCH] fs: proc/stat: use seq_file iterator interface Heiko Carstens
2014-06-09  8:11         ` [PATCH 2/2] fs: proc/stat: use usual seq_file ops rather than single_open Ian Kent
2014-06-11 12:43           ` Heiko Carstens
2014-06-11 22:29             ` David Rientjes
2014-06-12  6:24               ` Ian Kent
2014-06-12  6:52                 ` David Rientjes
2014-06-12  7:27                   ` Heiko Carstens
2014-06-12  8:18                     ` Heiko Carstens
2014-06-12 20:59                     ` David Rientjes
2014-06-12 11:09                   ` Ian Kent
2014-05-22 11:29 ` /proc/stat vs. failed order-4 allocation Ian Kent

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