diff options
Diffstat (limited to 'kernel/rcutorture.c')
| -rw-r--r-- | kernel/rcutorture.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index dd413bf6a1d..c3e165c2318 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -41,7 +41,6 @@ #include <linux/notifier.h> #include <linux/freezer.h> #include <linux/cpu.h> -#include <linux/random.h> #include <linux/delay.h> #include <linux/byteorder/swabb.h> #include <linux/stat.h> @@ -165,16 +164,14 @@ struct rcu_random_state { /* * Crude but fast random-number generator. Uses a linear congruential - * generator, with occasional help from get_random_bytes(). + * generator, with occasional help from cpu_clock(). */ static unsigned long rcu_random(struct rcu_random_state *rrsp) { - long refresh; - if (--rrsp->rrs_count < 0) { - get_random_bytes(&refresh, sizeof(refresh)); - rrsp->rrs_state += refresh; + rrsp->rrs_state += + (unsigned long)cpu_clock(raw_smp_processor_id()); rrsp->rrs_count = RCU_RANDOM_REFRESH; } rrsp->rrs_state = rrsp->rrs_state * RCU_RANDOM_MULT + RCU_RANDOM_ADD; |