Re: [RFCv5 PATCH 45/46] sched/cpufreq_sched: modify pcpu_capacity handling

[Michael Turquette]

Quoting Morten Rasmussen (2015-07-07 11:24:28)
> From: Juri Lelli <juri.lelli@xxxxxxx>
> 
> Use the cpu argument of cpufreq_sched_set_cap() to handle per_cpu writes,
> as the thing can be called remotely (e.g., from load balacing code).
> 
> cc: Ingo Molnar <mingo@xxxxxxxxxx>
> cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> 
> Signed-off-by: Juri Lelli <juri.lelli@xxxxxxx>

Looks good to me. Feel free to add my Reviewed-by or Acked-by as
appropriate.

Regards,
Mike

> ---
>  kernel/sched/cpufreq_sched.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/sched/cpufreq_sched.c b/kernel/sched/cpufreq_sched.c
> index 06ff183..b81ac779 100644
> --- a/kernel/sched/cpufreq_sched.c
> +++ b/kernel/sched/cpufreq_sched.c
> @@ -151,7 +151,7 @@ void cpufreq_sched_set_cap(int cpu, unsigned long capacity)
>         unsigned long capacity_max = 0;
>  
>         /* update per-cpu capacity request */
> -       __this_cpu_write(pcpu_capacity, capacity);
> +       per_cpu(pcpu_capacity, cpu) = capacity;
>  
>         policy = cpufreq_cpu_get(cpu);
>         if (IS_ERR_OR_NULL(policy)) {
> -- 
> 1.9.1
> 
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