Message-ID: <SNT111-DS18FDA82A2FB992AC38B693A78C0@phx.gbl>
From: "Ioannis Kyriakopoulos" <johnkyr83@hotmail.com>
To: "'Christoph Lameter'" <cl@linux-foundation.org>
CC: <linux-kernel@vger.kernel.org>
References: <SNT111-DS372EC73016B4FB39E0ACAA78C0@phx.gbl> <alpine.DEB.2.00.0912110802250.32415@router.home>
In-Reply-To: <alpine.DEB.2.00.0912110802250.32415@router.home>
Subject: RE: Finding and chaniging registered clocksources
Date: Fri, 11 Dec 2009 14:27:42 +0000
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Thanks very much for the reply.

>> However, I don't know how to found out what clocksource Linux has
assigned
>> for other activities apart from the one mentioned (e.g. for timekeeping)
and
>> how to change it, if possible.
>
>Depends on the subsystem.

Could you be a little more specific please cause I don't understand?

>getnstimeofday uses the syste, cllock that can be retrieved using
>/sys/devices/system/clocksource/clocksource0/current_clocksource

The problem in my case is that when I execute the above, I get:
cat: can't open
'/sys/devices/system/clocksource/clocksource0/current_clocksource': No such
file or directory
In general, my /sys directory is empty. This file should exist to my
filesystem prior to kernel execution or should it be created by the kernel
when it starts executing; but for some reason it is not being created in my
case?

Thanks.

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