diff --git a/headers/posix/pthread.h b/headers/posix/pthread.h
index 5ab2ad5e95..d9c52d5941 100644
--- a/headers/posix/pthread.h
+++ b/headers/posix/pthread.h
@@ -163,6 +163,8 @@ extern void pthread_exit(void *value_ptr);
 extern int pthread_join(pthread_t thread, void **_value);
 extern pthread_t pthread_self(void);
 extern int pthread_kill(pthread_t thread, int sig);
+extern int pthread_getconcurrency(void);
+extern int pthread_setconcurrency(int newLevel);
 
 extern int pthread_cancel(pthread_t thread);
 extern int pthread_setcancelstate(int state, int *_oldState);
diff --git a/src/system/libroot/posix/pthread/pthread.c b/src/system/libroot/posix/pthread/pthread.c
index 2a711b5f12..f4822c26a3 100644
--- a/src/system/libroot/posix/pthread/pthread.c
+++ b/src/system/libroot/posix/pthread/pthread.c
@@ -19,6 +19,7 @@ static const pthread_attr pthread_attr_default = {
 
 
 static int32 sPthreadSlot = -1;
+static int sConcurrencyLevel;
 
 
 struct pthread_thread *
@@ -157,3 +158,20 @@ pthread_detach(pthread_t thread)
 	return 0;
 }
 
+
+int
+pthread_getconcurrency(void)
+{
+	return sConcurrencyLevel;
+}
+
+
+int
+pthread_setconcurrency(int newLevel)
+{
+	if (newLevel < 0)
+		return EINVAL;
+
+	sConcurrencyLevel = newLevel;
+	return 0;
+}