diff options
Diffstat (limited to 'lib/random32.c')
| -rw-r--r-- | lib/random32.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/random32.c b/lib/random32.c index 4f9d5dffc554..1e5b2df44291 100644 --- a/lib/random32.c +++ b/lib/random32.c @@ -214,18 +214,22 @@ static DEFINE_TIMER(seed_timer, __prandom_timer, 0, 0); static void __prandom_timer(unsigned long dontcare) { u32 entropy; + unsigned long expires; get_random_bytes(&entropy, sizeof(entropy)); prandom_seed(entropy); + /* reseed every ~60 seconds, in [40 .. 80) interval with slack */ - seed_timer.expires = jiffies + (40 * HZ + (prandom_u32() % (40 * HZ))); + expires = 40 + (prandom_u32() % 40); + seed_timer.expires = jiffies + msecs_to_jiffies(expires * MSEC_PER_SEC); + add_timer(&seed_timer); } static void __init __prandom_start_seed_timer(void) { set_timer_slack(&seed_timer, HZ); - seed_timer.expires = jiffies + 40 * HZ; + seed_timer.expires = jiffies + msecs_to_jiffies(40 * MSEC_PER_SEC); add_timer(&seed_timer); } |