linux-kernel - Re: [PATCH] sched/fair: Fix wake_affine() for !NUMA

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Message-ID: <150367598066.27971.13705066235932844708@mail.alporthouse.com>
Date:   Fri, 25 Aug 2017 16:46:20 +0100
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     Peter Zijlstra <peterz@...radead.org>,
        "Josef Bacik" <josef@...icpanda.com>
Cc:     "Rik van Riel" <riel@...hat.com>, linux-kernel@...r.kernel.org,
        jhladky@...hat.com, mingo@...nel.org, mgorman@...e.de
Subject: Re: [PATCH] sched/fair: Fix wake_affine() for !NUMA_BALANCING

Quoting Peter Zijlstra (2017-08-01 22:43:07)
> @@ -5356,20 +5295,115 @@ static int wake_wide(struct task_struct
>         return 1;
>  }
>  
> +struct llc_stats {
> +       unsigned long nr_running;
> +       unsigned long load;
> +       unsigned long capacity;
> +       int has_capacity;
> +};
> +
> +static void get_llc_stats(struct llc_stats *stats, int cpu)
> +{
> +       struct sched_domain_shared *sds = rcu_dereference(per_cpu(sd_llc_shared, cpu));
> +
> +       if (!sds) {
> +               memset(&stats, 0, sizeof(*stats));
                         ^
Just in case, stray & before stats.
-Chris