From 6fb56185df42e49e0e2d8fe12d315356a57f4bce Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 9 Oct 2018 17:34:50 +0200
Subject: [PATCH 028/283] sched/migrate_disable: Add export_symbol_gpl for
 __migrate_disabled

Jonathan reported that lttng/modules can't use __migrate_disabled().
This function is only used by sched/core itself and the tracing
infrastructure to report the migrate counter (lttng does probably the
same). Since the rework migrate_disable() it moved from sched.h to
preempt.h and is became an exported function instead of a "static
inline" due to the header recursion of preempt vs sched.

Since the compiler inlines the function for sched/core usage, add a
EXPORT_SYMBOL_GPL to allow the module/LTTNG usage.

Reported-by: Jonathan Rajott <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 kernel/sched/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b658f0147c3b..7a39d56f6a6b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1013,6 +1013,7 @@ int __migrate_disabled(struct task_struct *p)
 {
 	return p->migrate_disable;
 }
+EXPORT_SYMBOL_GPL(__migrate_disabled);
 #endif
 
 static void __do_set_cpus_allowed_tail(struct task_struct *p,
-- 
2.20.1

