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(parent: cff8503) | patch
random: clean up interrupt entropy accounting for archs w/o cycle counters
authorTheodore Ts'o <tytso@mit.edu>
Sat, 14 Jun 2014 07:06:57 +0000 (03:06 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Tue, 15 Jul 2014 08:49:39 +0000 (04:49 -0400)
commit840f95077ffd640df9c74ad9796fa094a5c8075a
tree70cd554b7b5d7badbefdffc06067b28ad09fd749tree | snapshot (tar.gz zip)
parentcff850312cc7c0e0b9fe8b573687812dea232031commit | diff
random: clean up interrupt entropy accounting for archs w/o cycle counters

For architectures that don't have cycle counters, the algorithm for
deciding when to avoid giving entropy credit due to back-to-back timer
interrupts didn't make any sense, since we were checking every 64
interrupts.  Change it so that we only give an entropy credit if the
majority of the interrupts are not based on the timer.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: George Spelvin <linux@horizon.com>
drivers/char/random.c diff | blob | blame | history