From: H. Peter Anvin <hpa@linux.intel.com>
Date: Wed, 11 Sep 2013 03:16:17 +0000 (-0400)
Subject: random: statically compute poolbitshift, poolbytes, poolbits
X-Git-Tag: v3.13-rc1~61^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ed17b70b409dc48c134a80b5a6df582ba759de2;p=pandora-kernel.git

random: statically compute poolbitshift, poolbytes, poolbits

Use a macro to statically compute poolbitshift (will be used in a
subsequent patch), poolbytes, and poolbits.  On virtually all
architectures the cost of a memory load with an offset is the same as
the one of a memory load.

It is still possible for this to generate worse code since the C
compiler doesn't know the fixed relationship between these fields, but
that is somewhat unlikely.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

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