linux-kernel - Re: [PATCH v2] irq: use per_cpu kstat

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Message-ID: <alpine.DEB.2.00.1011051153110.8161@router.home>
Date:	Fri, 5 Nov 2010 11:54:53 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Tejun Heo <tj@...nel.org>, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v2] irq: use per_cpu kstat_irqs

On Fri, 5 Nov 2010, Eric Dumazet wrote:

>  static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
>  					    struct irq_desc *desc)

desc is not used.

>  {
> -	kstat_this_cpu.irqs[irq]++;
> -	kstat_this_cpu.irqs_sum++;
> +	__this_cpu_inc(kstat.irqs[irq]);
> +	__this_cpu_inc(kstat.irqs_sum);
>  }

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