I don't see any connection between the stack limit and scheduling.
So I think _STK_LIMIT is better defined in <linux/resource.h>
than in <linux/sched.h>.

The only place STK_LIM is used is in <asm/resource.h>, which only gets 
included by <linux/resource.h>, so no change in #includes is necessary.

Tim


--- linux-2.5.44/include/linux/resource.h	Sun Sep 22 06:25:00 2002
+++ linux-2.5.44-rs/include/linux/resource.h	Sat Oct 19 12:59:15 2002
@@ -50,6 +50,12 @@
 #define	PRIO_USER	2
 
 /*
+ * Limit the stack by to some sane default: root can always
+ * increase this limit if needed..  8MB seems reasonable.
+ */
+#define _STK_LIM	(8*1024*1024)
+
+/*
  * Due to binary compatibility, the actual resource numbers
  * may be different for different linux versions..
  */
--- linux-2.5.44/include/linux/sched.h	Sat Oct 19 11:00:17 2002
+++ linux-2.5.44-rs/include/linux/sched.h	Sat Oct 19 12:59:29 2002
@@ -431,12 +431,6 @@
 #define PT_TRACESYSGOOD	0x00000004
 #define PT_PTRACE_CAP	0x00000008	/* ptracer can follow suid-exec */
 
-/*
- * Limit the stack by to some sane default: root can always
- * increase this limit if needed..  8MB seems reasonable.
- */
-#define _STK_LIM	(8*1024*1024)
-
 #if CONFIG_SMP
 extern void set_cpus_allowed(task_t *p, unsigned long new_mask);
 #else
-
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