kdb: Make KDB use the new is_idle_task() API

Change from direct comparison of ->pid with zero to is_idle_task().

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 5532dd37aa86..7d6fb40d2188 100644
--- 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) {