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From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: make 32bit MAX_HARDIRQSS_PER_CPU to be NR_VECTORS
Date: Wed, 14 Jan 2009 12:17:55 +0100	[thread overview]
Message-ID: <20090114111755.GN2913@elte.hu> (raw)
In-Reply-To: <496B9FF3.3080909@kernel.org>


* Yinghai Lu <yinghai@kernel.org> wrote:

> Impact: clean up to be same as 64bit
> 
> 32bit is use per-cpu vector too, so don't use default NR_IRQS
> 
> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
> 
> ---
>  arch/x86/include/asm/hardirq_32.h  |    3 +++
>  arch/x86/include/asm/irq_vectors.h |    4 ++--
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> Index: linux-2.6/arch/x86/include/asm/hardirq_32.h
> ===================================================================
> --- linux-2.6.orig/arch/x86/include/asm/hardirq_32.h
> +++ linux-2.6/arch/x86/include/asm/hardirq_32.h
> @@ -20,6 +20,9 @@ typedef struct {
>  
>  DECLARE_PER_CPU(irq_cpustat_t, irq_stat);
>  
> +/* We can have at most NR_VECTORS irqs routed to a cpu at a time */
> +#define MAX_HARDIRQS_PER_CPU NR_VECTORS
> +
>  #define __ARCH_IRQ_STAT
>  #define __IRQ_STAT(cpu, member) (per_cpu(irq_stat, cpu).member)

applied to tip/x86/cleanups. Btw., isnt the irq_vectors.h bit (mentioned 
in the diffstat) missing?

	Ingo

  reply	other threads:[~2009-01-14 11:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-12 19:54 Yinghai Lu
2009-01-14 11:17 ` Ingo Molnar [this message]
2009-01-14 21:38   ` Yinghai Lu

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