linux-kernel - Re: [patch] slub: allow stats to be cleared

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Message-ID: <4AD97107.6040001@cs.helsinki.fi>
Date:	Sat, 17 Oct 2009 10:23:51 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	David Rientjes <rientjes@...gle.com>
CC:	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] slub: allow stats to be cleared

Hi David,

David Rientjes wrote:
> On a semi-related topic, it would have been nice to isolate all statistic 
> files to its own directory: /sys/kernel/slab/kmalloc-256/stats/..., for 
> example.  It would have made collecting (and now clearing) all statistics 
> much easier since userspace wouldn't need a predefined list of stat file 
> names to scan.  I wonder if Pekka would allow them to be moved...

It's a non-production configuration option and the only known user of 
the ABI is in slabinfo.c so maybe we can just go ahead and do that. 
Alternatively, I think we can preserve the current ABI with symbolic 
links in sysfs?

			Pekka
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