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.
Change-Id: I4c7ce7d0ce80b1065c489ee7a6f55b004ea3b50d
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed