Rather than batching up entropy samples, resulting in longer lock hold times
when we actually process the samples, mix in samples immediately.  The trickle
code should eliminate almost all the additional interrupt-time overhead this
would otherwise incur, with or without locking.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>