kdb: Make KDB use the new is_idle_task() API

Paul E. McKenney · paulmck · commit 7fc20c5cbdd1 · 2011-12-11T10:31:52.000-08:00
Change from direct comparison of -&gt;pid with zero to is_idle_task().

Signed-off-by: Paul E. McKenney &lt;paul.mckenney@linaro.org&gt;
Signed-off-by: Paul E. McKenney &lt;paulmck@linux.vnet.ibm.com&gt;
Cc: Jason Wessel &lt;jason.wessel@windriver.com&gt;
Reviewed-by: Josh Triplett &lt;josh@joshtriplett.org&gt;
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
@@ -636,7 +636,7 @@ char kdb_task_state_char (const struct task_struct *p)
 		(p->exit_state & EXIT_ZOMBIE) ? 'Z' :
 		(p->exit_state & EXIT_DEAD) ? 'E' :
 		(p->state & TASK_INTERRUPTIBLE) ? 'S' : '?';
-	if (p->pid == 0) {
+	if (is_idle_task(p)) {
 		/* Idle task.  Is it really idle, apart from the kdb
 		 * interrupt? */
 		if (!kdb_task_has_cpu(p) || kgdb_info[cpu].irq_depth == 1) {
