Re: [PATCH] lfsr: a simple binary Galois linear feedback shift register

From: Peter Zijlstra
Date: Wed Apr 01 2015 - 03:45:57 EST

On Tue, Mar 31, 2015 at 01:28:09PM -0400, Waiman Long wrote:
> This patch is based on the code sent out by Peter Zijstra as part
> of his queue spinlock patch to provide a hashing function with open
> addressing. The lfsr() function can be used to return a sequence of
> numbers that cycle through all the bit patterns (2^n -1) of a given
> bit width n except the value 0 in a somewhat random fashion depending
> on the LFSR tap that is being used.
> This code should be a standalone patch and not part of a larger
> patch series.

Yeah, except we don't merge code without users, which is why such stuff
typically gets a lift on the larger series you mention.
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