RE: [PATCH] ARM: perf: save/restore pmu registers in pm notifier

[Neil Zhang]

Stephen,

> -----Original Message-----
> From: Stephen Boyd [mailto:sboyd@xxxxxxxxxxxxxx]
> Sent: 2014年4月12日 2:32
> To: Neil Zhang
> Cc: will.deacon@xxxxxxx; linux@xxxxxxxxxxxxxxxx; Sudeep KarkadaNagesha;
> linux-kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH] ARM: perf: save/restore pmu registers in pm notifier
> 
> On 04/11/14 04:01, Neil Zhang wrote:
> > @@ -217,6 +219,24 @@ static struct notifier_block
> cpu_pmu_hotplug_notifier = {
> >  	.notifier_call = cpu_pmu_notify,
> >  };
> >
> > +static int cpu_pmu_pm_notify(struct notifier_block *b,
> > +					unsigned long action, void *hcpu) {
> > +	int cpu = smp_processor_id();
> > +	struct cpupmu_regs *pmuregs = &per_cpu(cpu_pmu_regs, cpu);
> 
> this_cpu_ptr(&cpu_pmu_regs)?

Thanks for the suggestion, I will update it.

> 
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Best Regards,
Neil Zhang