From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 4 Jul 2012 14:38:30 +0000 (-0400)
Subject: random: use lockless techniques in the interrupt path
X-Git-Tag: v3.2.27~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f4fe3e0cc3eb906174269681102860f22ed76d51;p=pandora-kernel.git

random: use lockless techniques in the interrupt path

commit 902c098a3663de3fa18639efbb71b6080f0bcd3c upstream.

The real-time Linux folks don't like add_interrupt_randomness() taking
a spinlock since it is called in the low-level interrupt routine.
This also allows us to reduce the overhead in the fast path, for the
random driver, which is the interrupt collection path.

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

Reading git-diff-tree failed