linux-kernel - Re: [PATCH] arch/tile: add /proc/tile, /proc/sys/tile, and a sysfs cpu attribute

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Message-Id: <201105241738.52146.arnd@arndb.de>
Date:	Tue, 24 May 2011 17:38:51 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	virtualization@...ts.linux-foundation.org
Cc:	Chris Metcalf <cmetcalf@...era.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch/tile: add /proc/tile, /proc/sys/tile, and a sysfs cpu attribute

On Thursday 19 May 2011, Arnd Bergmann wrote:
> > 
> > # cat /proc/tile/board
> > board_part: 402-00002-05
> > board_serial: NBS-5002-00012
> > chip_serial: P62338.01.110
> > chip_revision: A0
> > board_revision: 2.2
> > board_description: Tilera TILExpressPro-64, TILEPro64 processor (866 MHz-capable), 1 10GbE, 6 1GbE
> > # cat /proc/tile/switch
> > control: mdio gbe/0
> 
> I think it's ok to have it below /sys/hypervisor, because the information
> is provided through a hypervisor ABI, even though it describes something
> else. This is more like /sys/firmware, but the boundaries between that
> and /sys/hypervisor are not clearly defined when running virtualized anyway.

A minor point that I meant to bring up but had not gotten to:

When you do a /sys/hypervisor/ interface, put everything into a subdirectory
under /sys/hypervisor with the name of your hypervisor, to avoid naming
conflicts, e.g.

/sys/hypervisor/tilera-hv/board/board_serial

	Arnd
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