1 files changed, 7 insertions, 4 deletions

diff --git a/tools/testing/radix-tree/iteration_check.c b/tools/testing/radix-tree/iteration_check.c
index 9adb8e7415a6..11d570c3fc83 100644
--- a/tools/testing/radix-tree/iteration_check.c
+++ b/tools/testing/radix-tree/iteration_check.c
@@ -20,6 +20,7 @@
 #define TAG 0
 static pthread_mutex_t tree_lock = PTHREAD_MUTEX_INITIALIZER;
 static pthread_t threads[NUM_THREADS];
+static unsigned int seeds[3];
 RADIX_TREE(tree, GFP_KERNEL);
 bool test_complete;
 
@@ -71,7 +72,7 @@ static void *tagged_iteration_fn(void *arg)
                                 continue;
                         }
 
-                        if (rand() % 50 == 0)
+                        if (rand_r(&seeds[0]) % 50 == 0)
                                 slot = radix_tree_iter_next(&iter);
                 }
                 rcu_read_unlock();
@@ -111,7 +112,7 @@ static void *untagged_iteration_fn(void *arg)
                                 continue;
                         }
 
-                        if (rand() % 50 == 0)
+                        if (rand_r(&seeds[1]) % 50 == 0)
                                 slot = radix_tree_iter_next(&iter);
                 }
                 rcu_read_unlock();
@@ -129,7 +130,7 @@ static void *remove_entries_fn(void *arg)
         while (!test_complete) {
                 int pgoff;
 
-                pgoff = rand() % 100;
+                pgoff = rand_r(&seeds[2]) % 100;
 
                 pthread_mutex_lock(&tree_lock);
                 item_delete(&tree, pgoff);
@@ -146,9 +147,11 @@ void iteration_test(void)
 
         printf("Running iteration tests for 10 seconds\n");
 
-        srand(time(0));
         test_complete = false;
 
+        for (i = 0; i < 3; i++)
+                seeds[i] = rand();
+
         if (pthread_create(&threads[0], NULL, tagged_iteration_fn, NULL)) {
                 perror("pthread_create");
                 exit(1);