linux-kernel - [PATCH 0/4] [RFC] cleanup 64bit divide API

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Message-Id: <20080313002235.351414762@linux-m68k.org>
Date:	Thu, 13 Mar 2008 01:22:35 +0100
From:	zippel@...ux-m68k.org
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org
Subject: [PATCH 0/4] [RFC] cleanup 64bit divide API

Hi,

The primary purpose of these patches is to introduce a signed divide,
which is useful for NTP. While I'm at it I cleaned up the API, so it
should be a little easier to use.
It uses a new header <linux/math64.h> for it instead of using
<asm-generic/div64.h>. asm-generic/div64.h has the problem of an
all-or-nothing approach, so any arch not using it has to implement the
whole API and usually it's enough to provide only one of them.
<linux/math64.h> allows to selectively functions as needed.

In the long term we can first depricate using <asm/div64.h> and even
later do_div() completely.

bye, Roman

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