linux-kernel - Re: [PATCH] ARM: perf: save/restore pmu registers in pm notifier

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Date:	Fri, 11 Apr 2014 11:31:45 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Neil Zhang <zhangwm@...vell.com>
CC:	will.deacon@....com, linux@....linux.org.uk,
	Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
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)?

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