[GIT pull] sched/urgent for 5.3-rc5

[Thomas Gleixner]

Linus,

please pull the latest sched-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 
sched-urgent-for-linus

up to:  b0fdc01354f4: sched/core: Schedule new worker even if PI-blocked

Handle the worker management in situations where a task is scheduled out on
a PI lock contention correctly and schedule a new worker if possible.

Thanks,

        tglx

------------------>
Sebastian Andrzej Siewior (1):
      sched/core: Schedule new worker even if PI-blocked


 kernel/sched/core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 2b037f195473..010d578118d6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3904,7 +3904,7 @@ void __noreturn do_task_dead(void)
 
 static inline void sched_submit_work(struct task_struct *tsk)
 {
-       if (!tsk->state || tsk_is_pi_blocked(tsk))
+       if (!tsk->state)
                return;
 
        /*
@@ -3920,6 +3920,9 @@ static inline void sched_submit_work(struct task_struct 
*tsk)
                preempt_enable_no_resched();
        }
 
+       if (tsk_is_pi_blocked(tsk))
+               return;
+
        /*
         * If we are going to sleep and we have plugged IO queued,
         * make sure to submit it to avoid deadlocks.