--- cyclictest.c.orig	2005-11-24 13:33:21.000000000 +0100
+++ cyclictest.c	2006-03-17 10:50:26.000000000 +0100
@@ -24,12 +24,14 @@
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
+#include <limits.h>
 
 #include <linux/unistd.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/time.h>
+#include <sys/mman.h>
 
 /* Ugly, but .... */
 #define gettid() syscall(__NR_gettid)
@@ -158,7 +160,7 @@ void *timerthread(void *param)
 
 	memset(&schedp, 0, sizeof(schedp));
 	schedp.sched_priority = par->prio;
-	sched_setscheduler(0, policy, &schedp);
+	pthread_setschedparam(pthread_self(), policy, &schedp);
 
 	/* Get current time */
 	clock_gettime(par->clock, &now);
@@ -265,7 +267,7 @@ out:		
 
 	/* switch to normal */
 	schedp.sched_priority = 0;
-	sched_setscheduler(0, SCHED_OTHER, &schedp);	
+	pthread_setschedparam(pthread_self(), SCHED_OTHER, &schedp);
 
 	stat->threadstarted = -1;
 
@@ -396,6 +398,7 @@ int main(int argc, char **argv)
 	int mode;
 	struct thread_param *par;
 	struct thread_stat *stat;
+	pthread_attr_t thattr;
 	int i, ret = -1;
 
 	if (geteuid()) {
@@ -403,6 +406,8 @@ int main(int argc, char **argv)
 		exit(-1);
 	}
 
+	mlockall(MCL_CURRENT | MCL_FUTURE);
+
 	process_options(argc, argv);
 
 	mode = use_nanosleep + use_system;
@@ -442,7 +447,9 @@ int main(int argc, char **argv)
 		par[i].stats = &stat[i];
 		stat[i].min = 1000000;
 		stat[i].max = -1000000;
-		pthread_create(&stat[i].thread, NULL, timerthread, &par[i]);
+		pthread_attr_init(&thattr);
+		pthread_attr_setstacksize(&thattr, PTHREAD_STACK_MIN);
+		pthread_create(&stat[i].thread, &thattr, timerthread, &par[i]);
 		stat[i].threadstarted = 1;
 	}