linux-kernel - Re: [Patch v8 1/7] sched/pelt: Add support to track thermal pressure

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Message-ID: <20200116151724.GR2827@hirez.programming.kicks-ass.net>
Date:   Thu, 16 Jan 2020 16:17:24 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Thara Gopinath <thara.gopinath@...aro.org>
Cc:     mingo@...hat.com, ionela.voinescu@....com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rui.zhang@...el.com, qperret@...gle.com, daniel.lezcano@...aro.org,
        viresh.kumar@...aro.org, linux-kernel@...r.kernel.org,
        amit.kachhap@...il.com, javi.merino@...nel.org,
        amit.kucheria@...durent.com
Subject: Re: [Patch v8 1/7] sched/pelt: Add support to track thermal pressure

On Tue, Jan 14, 2020 at 02:57:33PM -0500, Thara Gopinath wrote:

> diff --git a/kernel/sched/pelt.h b/kernel/sched/pelt.h
> index afff644..bf1e17b 100644
> --- a/kernel/sched/pelt.h
> +++ b/kernel/sched/pelt.h
> @@ -7,6 +7,16 @@ int __update_load_avg_cfs_rq(u64 now, struct cfs_rq *cfs_rq);
>  int update_rt_rq_load_avg(u64 now, struct rq *rq, int running);
>  int update_dl_rq_load_avg(u64 now, struct rq *rq, int running);
>  
> +#ifdef CONFIG_HAVE_SCHED_THERMAL_PRESSURE
> +int update_thermal_load_avg(u64 now, struct rq *rq, u64 capacity);
static inline u64 thermal_load_avg(struct rq *rq)
{
	return READ_ONCE(rq->avg_thermal.load_avg);
}
> +#else
> +static inline int
> +update_thermal_load_avg(u64 now, struct rq *rq, u64 capacity)
> +{
> +	return 0;
> +}

static inline u64 thermal_load_avg(struct rq *rq)
{
	return 0;
}
> +#endif

Would help with patch 4 and 5.