From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: ranjith kumar <ranjit_kumar_b4u@yahoo.co.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: privilege levels and kernel mode
Date: Mon, 16 Oct 2006 00:02:09 +0100 [thread overview]
Message-ID: <1160953329.5732.91.camel@localhost.localdomain> (raw)
In-Reply-To: <20061015191716.15283.qmail@web27401.mail.ukl.yahoo.com>
Ar Sul, 2006-10-15 am 20:17 +0100, ysgrifennodd ranjith kumar:
> I know how to include assembly instructions in a C
> program to wtrite into "Model specific registers". But
> that program has to be run at privilege level zero.
Its more hairy than that because of SMP and handling overflows and
according to whether you need to profile all use or your own task and so
on. Fortunately someone has done all the hard work already - take a look
at the oprofile support in the kernel and see if it will do what you
need.
Alan
prev parent reply other threads:[~2006-10-15 22:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-15 18:34 [PATCH] close mprotect noexec hole Ulrich Drepper
2006-10-15 18:47 ` Linus Torvalds
2006-10-15 19:14 ` Ulrich Drepper
2006-10-15 19:40 ` Linus Torvalds
2006-10-15 21:37 ` Ulrich Drepper
2006-10-15 19:17 ` privilege levels and kernel mode ranjith kumar
2006-10-15 19:24 ` bert hubert
2006-10-15 20:02 ` Jan Engelhardt
2006-10-15 23:02 ` Alan Cox [this message]
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