29 lines
874 B
Diff
29 lines
874 B
Diff
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
Date: Tue, 9 Feb 2016 18:17:18 +0100
|
|
Subject: kernel: softirq: unlock with irqs on
|
|
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.8/older/patches-4.8.6-rt5.tar.xz
|
|
|
|
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 <bigeasy@linutronix.de>
|
|
---
|
|
kernel/softirq.c | 4 +++-
|
|
1 file changed, 3 insertions(+), 1 deletion(-)
|
|
|
|
--- a/kernel/softirq.c
|
|
+++ b/kernel/softirq.c
|
|
@@ -549,8 +549,10 @@ static void do_current_softirqs(void)
|
|
do_single_softirq(i);
|
|
}
|
|
softirq_clr_runner(i);
|
|
- unlock_softirq(i);
|
|
WARN_ON(current->softirq_nestcnt != 1);
|
|
+ local_irq_enable();
|
|
+ unlock_softirq(i);
|
|
+ local_irq_disable();
|
|
}
|
|
}
|
|
|