Date: Tue, 22 Jun 2004 13:47:38 -0700
From: "David S. Miller" <davem@redhat.com>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: linux-kernel@vger.kernel.org, rddunlap@osdl.org
Subject: Re: [profile]: [21/23] use atomic_t for prof_buffer
Message-Id: <20040622134738.3f9d8d76.davem@redhat.com>
In-Reply-To: <20040622201654.GG2135@holomorphy.com>
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On Tue, 22 Jun 2004 13:16:54 -0700
William Lee Irwin III <wli@holomorphy.com> wrote:

> On Tue, 22 Jun 2004 08:17:55 -0700 William Lee Irwin III <wli@holomorphy.com> wrote:
> >> Convert prof_buffer to an array of atomic_t's.
> 
> On Tue, Jun 22, 2004 at 01:01:16PM -0700, David S. Miller wrote:
> > Part of a data type exported to userspace, is it not?
> > Thus, is it really valid to change it like this?
> 
> They're copied raw to userspace now and casted to atomic_t for all
> modifications except for sparc32, arm, h8300, m68k, and m68knommu,
> where it's still equivalent (the atomic operations just do normal
> arithmetic under hashed locks or with ll/sc or other easily zennable
> asm), so there is no change. Or did I miss an arch?

That sets my mind at ease, looks good.
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