[PATCH RT 07/13] kernel: softirq: unlock with irqs on

[Steven Rostedt]

3.12.54-rt74-rc1 stable review patch.
If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bige...@linutronix.de>

We unlock the lock while the interrupts are off. This isn't a problem
now but will get because the migrate_disable() + enable are not
symmetrical in regard to the status of interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
Signed-off-by: Steven Rostedt <rost...@goodmis.org>
---
 kernel/softirq.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/softirq.c b/kernel/softirq.c
index cce9723c5a18..7c8e36bf9e2a 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -578,8 +578,10 @@ static void do_current_softirqs(int need_rcu_bh_qs)
                        do_single_softirq(i, need_rcu_bh_qs);
                }
                softirq_clr_runner(i);
-               unlock_softirq(i);
                WARN_ON(current->softirq_nestcnt != 1);
+               local_irq_enable();
+               unlock_softirq(i);
+               local_irq_disable();
        }
 }
 
-- 
2.7.0