linux-kernel - RE: [PATCH] cpufreq: qoriq: Make the driver usable on all QorIQ platforms

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Message-ID: <8cf6bdb05e9b4d04994366db335f3a52@DM2PR03MB574.namprd03.prod.outlook.com>
Date:	Tue, 21 Oct 2014 08:25:42 +0000
From:	Yuantian Tang <Yuantian.Tang@...escale.com>
To:	Kumar Gala <galak@...nel.crashing.org>
CC:	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"viresh.kumar@...aro.org" <viresh.kumar@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linuxppc-dev@...abs.org" <linuxppc-dev@...abs.org>
Subject: RE: [PATCH] cpufreq: qoriq: Make the driver usable on all QorIQ
 platforms

> > #ifndef CONFIG_SMP
> > static inline const struct cpumask *cpu_core_mask(int cpu) { @@ -79,6
> > +75,79 @@ static inline const struct cpumask *cpu_core_mask(int cpu) }
> > #endif
> >
> > +#if defined(CONFIG_PPC_E500MC)
> 
> Probably should just be CONFIG_PPC, but do we need this at all.  Can't we just
> use topology_core_id() on both ARM & PPC?
> 
topology_core_id() doesn't work on PPC.
This function only supports PPC64 and non-thread SOCs.

I can make it work on PPC, but we are used to use get_hard_smp_processor_id() on ppc.

Regards,
Yuantian

> > +static int get_cpu_physical_id(int cpu) {
> > +	return get_hard_smp_processor_id(cpu); } #elif defined(CONFIG_ARM)
> > +static int get_cpu_physical_id(int cpu) {
> > +	return topology_core_id(cpu);
> > +}
> > +#endif
> > +

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