Re: [PATCH v8 8/8] rcu/tree: Setschedule gp ktread to SCHED_FIFO outside of atomic region

[Juri Lelli]

On 01/07/19 21:13, Peter Zijlstra wrote:
> On Fri, Jun 28, 2019 at 10:06:18AM +0200, Juri Lelli wrote:
> > sched_setscheduler() needs to acquire cpuset_rwsem, but it is currently
> > called from an invalid (atomic) context by rcu_spawn_gp_kthread().
> > 
> > Fix that by simply moving sched_setscheduler_nocheck() call outside of
> > the atomic region, as it doesn't actually require to be guarded by
> > rcu_node lock.
> 
> Maybe move this earlier in the series such that the bug doesn't manifest
> in bisection?

OK.