From: Andi Kleen <ak@suse.de>
To: Milena Milenkovic <mmilenko@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, davej@codemonkey.org.uk, hpa@zytor.com
Subject: Re: [2.6 PATCH] Exporting mmu_cr4_features again for i386 & x86_64
Date: Thu, 29 Jun 2006 12:55:36 +0200 [thread overview]
Message-ID: <200606291255.36206.ak@suse.de> (raw)
In-Reply-To: <OF692619AF.8A926C55-ON8725719B.007C1C06-8625719B.007E27C7@us.ibm.com>
On Thursday 29 June 2006 01:01, Milena Milenkovic wrote:
> Hi all,
>
> The mmu_cr4_features variable was "unexported" in 2.6.12 kernel
> (A patch submitted by Adrian Bunk, [2.6 patch] unexport mmu_cr4_features).
Normal policy is to unexport symbols that are not used in the core
kernel.
However I think there is a deprecation policy with prior
warning that might not have been followed here.
> However, this variable is needed if a loadable kernel module wants to
> enable
> access to performance counters from user space.
Ok I guess it's a reasonable request (although we will likely
eventually add a standard API for this and then it might
be removed again)
-Andi
next parent reply other threads:[~2006-06-29 10:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <OF692619AF.8A926C55-ON8725719B.007C1C06-8625719B.007E27C7@us.ibm.com>
2006-06-29 10:55 ` Andi Kleen [this message]
2006-06-29 11:04 ` Arjan van de Ven
2006-06-29 11:08 ` Andrew Morton
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