[PATCH RT 04/22] kernel/softirq: use cond_resched_rcu_qs() on -RT as well (run_ksoftirqd())

From: Steven Rostedt
Date: Wed Mar 02 2016 - 10:16:12 EST


4.1.15-rt18-rc1 stable review patch.
If anyone has any objections, please let me know.

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

From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

The upstream changes were:
6047967 ksoftirqd: Use new cond_resched_rcu_qs() function
28423ad ksoftirqd: Enable IRQs and call cond_resched() before poking RCU

Reported-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/softirq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 0fd93311536f..f4c2e679a7d7 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -599,8 +599,8 @@ static void run_ksoftirqd(unsigned int cpu)

do_current_softirqs();
current->softirq_nestcnt--;
- rcu_note_context_switch();
local_irq_enable();
+ cond_resched_rcu_qs();
}

/*
--
2.7.0