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
next prev parent 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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