Take the MAX_PRIO macro and comments out of sched.h to allow more
flexible range of dynamic priorities and scheduler designs.

Signed-off-by: Con Kolivas <kernel@kolivas.org>


Index: linux-2.6.10-rc1-mm2-plugsched1/include/linux/sched.h
===================================================================
--- linux-2.6.10-rc1-mm2-plugsched1.orig/include/linux/sched.h	2004-10-29 21:47:52.739595073 +1000
+++ linux-2.6.10-rc1-mm2-plugsched1/include/linux/sched.h	2004-10-29 21:48:10.494824131 +1000
@@ -328,11 +328,6 @@ struct signal_struct {
 };
 
 /*
- * Priority of a process goes from 0..MAX_PRIO-1, valid RT
- * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL tasks are
- * in the range MAX_RT_PRIO..MAX_PRIO-1. Priority values
- * are inverted: lower p->prio value means higher priority.
- *
  * The MAX_USER_RT_PRIO value allows the actual maximum
  * RT priority to be separate from the value exported to
  * user-space.  This allows kernel threads to set their
@@ -343,8 +338,6 @@ struct signal_struct {
 #define MAX_USER_RT_PRIO	100
 #define MAX_RT_PRIO		MAX_USER_RT_PRIO
 
-#define MAX_PRIO		(MAX_RT_PRIO + 40)
-
 extern int rt_task(task_t *p);
 
 /*
@@ -515,6 +508,8 @@ struct mempolicy;
 
 #include <linux/scheduler.h>
 
+extern struct sched_drv *scheduler;
+
 struct task_struct {
 	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
 	struct thread_info *thread_info;
Index: linux-2.6.10-rc1-mm2-plugsched1/kernel/sched.c
===================================================================
--- linux-2.6.10-rc1-mm2-plugsched1.orig/kernel/sched.c	2004-10-29 21:48:08.237176468 +1000
+++ linux-2.6.10-rc1-mm2-plugsched1/kernel/sched.c	2004-10-29 21:48:10.495823975 +1000
@@ -59,6 +59,15 @@
 #endif
 
 /*
+ * Priority of a process goes from 0..MAX_PRIO-1, valid RT
+ * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL tasks are
+ * in the range MAX_RT_PRIO..MAX_PRIO-1. Priority values
+ * are inverted: lower p->prio value means higher priority.
+ */
+
+#define MAX_PRIO		(MAX_RT_PRIO + 40)
+
+/*
  * Convert user-nice values [ -20 ... 0 ... 19 ]
  * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ],
  * and back.