Update for the -K3 scheduler.

arch/alpha/kernel/entry.S

@@ -497,6 +497,7 @@ alpha_switch_to:
 	ret	$31,($26),1
 .end alpha_switch_to
 
+#ifdef CONFIG_SMP
 .globl  ret_from_fork
 .align 3
 .ent ret_from_fork
@@ -505,6 +506,7 @@ ret_from_fork:
 	mov	$0,$16
 	jmp	$31,schedule_tail
 .end ret_from_fork
+#endif
 
 /*
  * Oh, well.. Disassembling OSF/1 binaries to find out how the

arch/alpha/kernel/process.c

@@ -283,6 +283,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 	    unsigned long unused,
 	    struct task_struct * p, struct pt_regs * regs)
 {
+	extern void ret_from_sys_call(void);
 	extern void ret_from_fork(void);
 
 	struct thread_info *childti = p->thread_info;
@@ -304,7 +305,11 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 	stack = ((struct switch_stack *) regs) - 1;
 	childstack = ((struct switch_stack *) childregs) - 1;
 	*childstack = *stack;
+#ifdef CONFIG_SMP
 	childstack->r26 = (unsigned long) ret_from_fork;
+#else
+	childstack->r26 = (unsigned long) ret_from_sys_call;
+#endif
 	childti->pcb.usp = usp;
 	childti->pcb.ksp = (unsigned long) childstack;
 	childti->pcb.flags = 1;	/* set FEN, clear everything else */

include/asm-alpha/mmu_context.h

@@ -24,13 +24,10 @@
 /* ??? This does not belong here.  */
 /*
  * Every architecture must define this function. It's the fastest
- * way of searching a 168-bit bitmap where the first 128 bits are
- * unlikely to be set. It's guaranteed that at least one of the 168
- * bits is set.
+ * way of searching a 140-bit bitmap where the first 100 bits are
+ * unlikely to be set. It's guaranteed that at least one of the 140
+ * bits is cleared.
  */
-#if MAX_RT_PRIO != 128 || MAX_PRIO > 192
-# error update this function.
-#endif
 
 static inline int
 sched_find_first_bit(unsigned long *b)