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Date: Mon, 25 Mar 2013 17:00:03 +0800
Message-ID: <CAAO_Xo7CTzow1TN+4bmmHH9KB4NSLRv5ZsOmwEC2KGTxDc-1Ug@mail.gmail.com>
Subject: Re: Question: How to distribute the interrupts over multiple cores?
From: Lenky Gao <lenky.gao@gmail.com>
To: Lin Feng <linfeng@cn.fujitsu.com>
Cc: linux-kernel@vger.kernel.org, yinghai@kernel.org, mingo@elte.hu,
        gorcunov@gmail.com, rusty@rustcorp.com.au, sivanich@sgi.com,
        agordeev@redhat.com
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I have found a comment in function physflat_cpu_mask_to_apicid to explain why.

static unsigned int physflat_cpu_mask_to_apicid(const struct cpumask *cpumask)
{
	int cpu;

	/*
	 * We're using fixed IRQ delivery, can only return one phys APIC ID.
	 * May as well be the first.
	 */
...

This is mean i can not distribute the interrupts over multiple cores
when the machine have more than 8 cores?


-- 
Regards,

Lenky
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