linux-kernel - Re: [PATCH 2/2] x2apic, cluster: use all the members of one cluster specified in the smp_affinity mask for the interrupt desintation

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Message-ID: <CAE9FiQW5FJt_YR5p4B19K2-mj6gwk82zxB9DbVMfBicjXr_VpQ@mail.gmail.com>
Date:	Tue, 22 May 2012 13:03:55 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	agordeev@...hat.com, linux-kernel@...r.kernel.org, x86@...nel.org,
	gorcunov@...nvz.org
Subject: Re: [PATCH 2/2] x2apic, cluster: use all the members of one cluster
 specified in the smp_affinity mask for the interrupt desintation

On Mon, May 21, 2012 at 4:58 PM, Suresh Siddha
<suresh.b.siddha@...el.com> wrote:
> We are now grouping all the cpu's in a cluster to one vector domain. So that
> will limit the total number of interrupt sources handled by Linux. Previously
> we support "cpu-count * available-vectors-per-cpu" interrupt sources but this
> will now reduce to "cpu-count/16 * available-vectors-per-cpu".

maybe could add some boot parameter to control cpu number in same
domain that is used instead of 16.

Thanks

Yinghai
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