diff --git a/testcases/kernel/sched/sched_stress/sched.h b/testcases/kernel/sched/sched_stress/sched.h
index 8ed941eba..bcdecacc5 100644
--- a/testcases/kernel/sched/sched_stress/sched.h
+++ b/testcases/kernel/sched/sched_stress/sched.h
@@ -46,8 +46,10 @@
 #include <time.h>
 #include <errno.h>
 #include <stdio.h>
+#include <sched.h>

 #define DEFAULT_PRIORITY 70
+#define SET_RT_SCHEDULER(paraA, paraB, paraC) sched_setscheduler(paraA, paraB, paraC)

 #if 0
 int  openlog (char *);
diff --git a/testcases/kernel/sched/sched_stress/sched_tc0.c b/testcases/kernel/sched/sched_stress/sched_tc0.c
index 9acbc2f58..290ad1e63 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc0.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc0.c
@@ -90,7 +90,9 @@ int verbose = 0;
 int debug = 0;
 long execution_time = DEFAULT_EXECUTION_TIME;
 char *priority = DEFAULT_PRIORITY_TYPE;
-
+struct sched_param param = {
+		.sched_priority = DEFAULT_PRIORITY
+};
 /*---------------------------------------------------------------------+
 |                                 main                                 |
 | ==================================================================== |
@@ -127,10 +129,10 @@ int main(int argc, char **argv)
 	if (!strcmp(priority, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	}

diff --git a/testcases/kernel/sched/sched_stress/sched_tc1.c b/testcases/kernel/sched/sched_stress/sched_tc1.c
index c771ef421..17d32cd9d 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc1.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc1.c
@@ -72,7 +72,9 @@
 void process_file(char *);
 void parse_args(int, char **);
 void signal_handler();
-
+struct sched_param param = {
+	.sched_priority = DEFAULT_PRIORITY
+};
 /*
  * Global variables:
  *
@@ -128,10 +130,10 @@ int main(int argc, char **argv)
 	if (!strcmp(priority, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	}

diff --git a/testcases/kernel/sched/sched_stress/sched_tc2.c b/testcases/kernel/sched/sched_stress/sched_tc2.c
index 1e2e3e629..ef90cfd2d 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc2.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc2.c
@@ -47,7 +47,9 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 #include   "sched.h"
-
+struct sched_param param = {
+	.sched_priority = DEFAULT_PRIORITY
+};
 /*
  * Defines:
  *
@@ -129,10 +131,10 @@ int main(int argc, char **argv)
 	if (!strcmp(priority, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	}

diff --git a/testcases/kernel/sched/sched_stress/sched_tc3.c b/testcases/kernel/sched/sched_stress/sched_tc3.c
index 8064e9eda..913662172 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc3.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc3.c
@@ -95,7 +95,9 @@ int verbose = 0;
 int debug = 0;
 int signaled = 0;
 char *priority = DEFAULT_PRIORITY_TYPE;
-
+struct sched_param param = {
+	.sched_priority = DEFAULT_PRIORITY
+};
 /*---------------------------------------------------------------------+
 |                                 main                                 |
 | ==================================================================== |
@@ -131,10 +133,10 @@ int main(int argc, char **argv)
 	if (!strcmp(priority, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	}

diff --git a/testcases/kernel/sched/sched_stress/sched_tc4.c b/testcases/kernel/sched/sched_stress/sched_tc4.c
index 5bffb6478..81a8e170c 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc4.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc4.c
@@ -99,7 +99,7 @@ int debug = 0;
 int priority = DEFAULT_PRIORITY;
 char *logfile = DEFAULT_LOGFILE;
 char *priority_type = DEFAULT_PRIORITY_TYPE;
-
+struct sched_param param;
 /*---------------------------------------------------------------------+
 |                                 main                                 |
 | ==================================================================== |
@@ -133,10 +133,11 @@ int main(int argc, char **argv)
 	if (!strcmp(priority_type, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		param.sched_priority = priority;
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	} else {
 		if (nice((priority - 50) - (nice(0) + 20)) < 0 && errno != 0)
diff --git a/testcases/kernel/sched/sched_stress/sched_tc5.c b/testcases/kernel/sched/sched_stress/sched_tc5.c
index db5ce963c..c315f9ade 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc5.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc5.c
@@ -95,7 +95,7 @@ int debug = 0;
 int priority = DEFAULT_PRIORITY;
 char *logfile = DEFAULT_LOGFILE;
 char *priority_type = DEFAULT_PRIORITY_TYPE;
-
+struct sched_param param;
 /*---------------------------------------------------------------------+
 |                                 main                                 |
 | ==================================================================== |
@@ -130,10 +130,11 @@ int main(int argc, char **argv)
 	if (!strcmp(priority_type, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		param.sched_priority = priority;
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	} else {
 		if (nice((priority - 50) - (nice(0) + 20)) < 0 && errno != 0)
diff --git a/testcases/kernel/sched/sched_stress/sched_tc6.c b/testcases/kernel/sched/sched_stress/sched_tc6.c
index e70e8f250..20987f571 100644
--- a/testcases/kernel/sched/sched_stress/sched_tc6.c
+++ b/testcases/kernel/sched/sched_stress/sched_tc6.c
@@ -117,6 +117,7 @@ char *logfile = DEFAULT_LOGFILE;
 char *priority_type = DEFAULT_PRIORITY_TYPE;
 struct flock flock_struct;
 struct flock *flock_ptr = &flock_struct;
+struct sched_param param;

 int open_file(char *, int);

@@ -163,10 +164,11 @@ int main(int argc, char **argv)
 	if (!strcmp(priority_type, "fixed")) {
 #ifndef __linux__
 		if (setpri(0, DEFAULT_PRIORITY) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #else
-		if (setpriority(PRIO_PROCESS, 0, 0) < 0)
-			sys_error("setpri failed", __FILE__, __LINE__);
+		param.sched_priority = priority;
+		if (SET_RT_SCHEDULER(0, SCHED_RR, &param) < 0)
+			sys_error("set rt pri failed", __FILE__, __LINE__);
 #endif
 	} else {
 		if (nice((priority - 50) - (nice(0) + 20)) < 0 && errno != 0)
