Messages in this thread | | | Date | Wed, 28 Apr 2010 16:22:46 -0700 | From | Stephen Hemminger <> | Subject | Re: [PATCH v2] - Randomize node rotor used in cpuset_mem_spread_node() |
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On Wed, 28 Apr 2010 16:12:44 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
> On Wed, 28 Apr 2010 18:04:06 -0500 > Matt Mackall <mpm@selenic.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?
Because I need a cheap fast pseudo-random source for emulation and it got used for more and more non-cryptographic uses. And like most random generators people keep forgetting that it was not intended for security use.
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