Re: [PATCH 2/2] sched: add statistic for rq->max_idle_balance_cost

[Peter Zijlstra <peterz@infradead.org>]

On Wed, Jan 22, 2014 at 04:24:13PM +0800, Alex Shi wrote:
> From: Alex Shi <alex.shi@linaro.org>
> Date: Tue, 21 Jan 2014 13:28:55 +0800
> Subject: [RFC PATCH] sched: add statistic for rq->max_idle_balance_cost
> 
> It's useful to track this value in debug mode.
> 
> Signed-off-by: Alex Shi <alex.shi@linaro.org>
> ---
>  kernel/sched/debug.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
> index 1e43e70..f5c529a 100644
> --- a/kernel/sched/debug.c
> +++ b/kernel/sched/debug.c
> @@ -315,6 +315,7 @@ do {									\
>  	P(sched_goidle);
>  #ifdef CONFIG_SMP
>  	P64(avg_idle);
> +	P64(max_idle_balance_cost);
>  #endif
>   	P(ttwu_count);

Not also the per-sd value in sd_alloc_ctl_domain_table() ?