Re: [RFC PATCH 1/4] cpufreq: governor: support scheduler cpufreq callbacks on remote CPUs

From: Viresh Kumar
Date: Fri Apr 29 2016 - 06:38:25 EST


On 19-04-16, 19:39, Steve Muckle wrote:
> diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
> index 20f0a4e114d1..429d3a5b9866 100644
> --- a/drivers/cpufreq/cpufreq_governor.c
> +++ b/drivers/cpufreq/cpufreq_governor.c
> @@ -248,6 +248,20 @@ static void dbs_irq_work(struct irq_work *irq_work)
> schedule_work_on(smp_processor_id(), &policy_dbs->work);
> }
>
> +#ifdef CONFIG_SMP
> +static inline void dbs_irq_work_queue(struct policy_dbs_info *policy_dbs,
> + int cpu)
> +{
> + irq_work_queue_on(&policy_dbs->irq_work, cpu);
> +}
> +#else
> +static inline void dbs_irq_work_queue(struct policy_dbs_info *policy_dbs,
> + int cpu)
> +{
> + irq_work_queue(&policy_dbs->irq_work);
> +}
> +#endif

Any clue, why we don't have a non-SMP version of irq_work_queue_on(), Which can
simply call irq_work_queue() ?

--
viresh