SMP - CPU local run queues

- each CPU has its own runqueues

- processes on BSP are put on the runqueues later after a switch to
  the final stack when cpuid works to avoid special cases

- enqueue() and dequeue() use the run queues of the cpu the process is
  assigned to

- pick_proc() uses the local run queues

- printing of per-CPU run queues ('2') on serial console

kernel/debug.c

@@ -14,11 +14,14 @@
 
 #define MAX_LOOP (NR_PROCS + NR_TASKS)
 
-PUBLIC int
-runqueues_ok(void)
+PUBLIC int runqueues_ok_cpu(unsigned cpu)
 {
   int q, l = 0;
   register struct proc *xp;
+  struct proc **rdy_head, **rdy_tail;
+
+  rdy_head = get_cpu_var(cpu, run_q_head);
+  rdy_tail = get_cpu_var(cpu, run_q_tail);
 
   for (xp = BEG_PROC_ADDR; xp < END_PROC_ADDR; ++xp) {
 	xp->p_found = 0;
@@ -109,6 +112,33 @@ runqueues_ok(void)
   return 1;
 }
 
+#ifdef CONFIG_SMP
+PRIVATE int runqueues_ok_all(void)
+{
+	unsigned c;
+
+	for (c = 0 ; c < ncpus; c++) {
+		if (!runqueues_ok_cpu(c))
+			return 0;
+	}
+	return 1;	
+}
+
+PUBLIC int runqueues_ok(void)
+{
+	return runqueues_ok_all();
+}
+
+#else
+
+PUBLIC int runqueues_ok(void)
+{
+	return runqueues_ok_cpu(0);
+}
+
+
+#endif
+
 PUBLIC char *
 rtsflagstr(const int flags)
 {