rtl_sched.patch

来自「fsmlabs的real time linux的内核」· PATCH 代码 · 共 35 行

--- rtl_sched.c.org	Sun Sep 15 13:14:09 2002
+++ rtl_sched.c	Sun Sep 15 14:01:11 2002
@@ -584,18 +584,27 @@
 	pthread_attr_t default_attr;
 	int stack_size;
 	if (!attr) {
+		/* if the creat is from rt-context the attributes must be
+		 * passed to pthread_create  -  hofrat
+		 */
+		if (pthread_self() != pthread_linux()) {
+			return EAGAIN;
+		}
+		else {
 		pthread_attr_init(&default_attr);
 		attr = &default_attr;
+		}
 	}
 
 	stack_size = attr->stack_size;
 	stack_addr = (int *) attr->stack_addr;
 
 	if (!stack_addr) {
-		if (pthread_self() != pthread_linux()) {
-			return EAGAIN;
-		}
-		stack_addr = (int *) kmalloc(stack_size, GFP_KERNEL);
+		/* as long as we use GFP_ATOMIC we should be safe (?) 
+		 * so no need to check if we are in kernel or rt-context
+		 * hofrat
+		 */
+		stack_addr = (int *) kmalloc(stack_size, GFP_ATOMIC);
  		task = (struct rtl_thread_struct *) stack_addr;
  		if (!task) {
   			return EAGAIN;