From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 5 Jul 2012 14:21:01 +0000 (-0400)
Subject: random: use the arch-specific rng in xfer_secondary_pool
X-Git-Tag: v3.2.27~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=060bc1d0cb527cf8b77f049ff6a595ddb68a41c8;p=pandora-kernel.git

random: use the arch-specific rng in xfer_secondary_pool

commit e6d4947b12e8ad947add1032dd754803c6004824 upstream.

If the CPU supports a hardware random number generator, use it in
xfer_secondary_pool(), where it will significantly improve things and
where we can afford it.

Also, remove the use of the arch-specific rng in
add_timer_randomness(), since the call is significantly slower than
get_cycles(), and we're much better off using it in
xfer_secondary_pool() anyway.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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