From: Scott Wood <swood@redhat.com>
Date: Sat, 27 Jul 2019 00:56:33 -0500
Subject: [PATCH] sched: Remove dead __migrate_disabled() check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2.17-rt9.tar.xz

This code was unreachable given the __migrate_disabled() branch
to "out" immediately beforehand.

Signed-off-by: Scott Wood <swood@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 kernel/sched/core.c |    7 -------
 1 file changed, 7 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1173,13 +1173,6 @@ static int __set_cpus_allowed_ptr(struct
 	if (cpumask_test_cpu(task_cpu(p), new_mask) || __migrate_disabled(p))
 		goto out;
 
-#if defined(CONFIG_PREEMPT_COUNT) && defined(CONFIG_SMP)
-	if (__migrate_disabled(p)) {
-		p->migrate_disable_update = 1;
-		goto out;
-	}
-#endif
-
 	dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
 	if (task_running(rq, p) || p->state == TASK_WAKING) {
 		struct migration_arg arg = { p, dest_cpu };