Re: [PATCH 2/2] sched/debug: fix deadlock when enabling sched events

[Ingo Molnar]

* Josh Poimboeuf <jpoim...@redhat.com> wrote:

> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -789,6 +789,13 @@ static void update_curr_fair(struct rq *rq)
>       update_curr(cfs_rq_of(&rq->curr->se));
>  }
>  
> +void trace_sched_stat_register(void)
> +{
> +#ifdef CONFIG_SCHEDSTATS
> +     force_schedstat_enabled();
> +#endif
> +}

I think it would be cleaner to provide an empty force_schedstat_enabled() 
definition in sched.h, on !CONFIG_SCHEDSTATS.

But it might make sense to further decouple schedstats from tracing?

Thanks,

        Ingo