linux-kernel - Re: [PATCH v2] - Randomize node rotor used in cpuset_mem_spread

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Message-Id: <20100428161244.5d351395.akpm@linux-foundation.org>
Date:	Wed, 28 Apr 2010 16:12:44 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Jack Steiner <steiner@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Stephen Hemminger <shemminger@...tta.com>
Subject: Re: [PATCH v2] - Randomize node rotor used in
 cpuset_mem_spread_node()

On Wed, 28 Apr 2010 18:04:06 -0500
Matt Mackall <mpm@...enic.com> wrote:

> > I suspect random32() would suffice here.  It avoids depleting the
> > entropy pool altogether.
> 
> I wouldn't worry about that. get_random_int() touches the urandom pool,
> which will always leave entropy around. Also, Ted and I decided over a
> year ago that we should drop the whole entropy accounting framework,
> which I'll get around to some rainy weekend.

hm, so why does random32() exist?  Speed?
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