Index: tools/tools/crypto/cryptotest.c
===================================================================
--- tools/tools/crypto/cryptotest.c
+++ tools/tools/crypto/cryptotest.c
@@ -468,6 +468,11 @@
 	if (threads > 1) {
 		for (i = 0; i < threads; i++)
 			if (fork() == 0) {
+				cpuset_t mask;
+				CPU_ZERO(&mask);
+				CPU_SET(i, &mask);
+				cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID,
+				    -1, sizeof(mask), &mask);
 				runtest(alg, count, size, cmd, &tvp[i]);
 				exit(0);
 			}