aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--kernel/rcutorture.c9
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;