linux-kernel - Re: [PATCH v2] x86/apic: Use smaller array for __apicid_to

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Message-ID: <5617DA66.1040006@linux.intel.com>
Date:	Fri, 9 Oct 2015 23:16:54 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Daniel J Blueman <daniel@...ascale.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Len Brown <len.brown@...el.com>,
	Steffen Persvold <sp@...ascale.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v2] x86/apic: Use smaller array for __apicid_to_node[]
 mapping

On 2015/10/9 22:15, Thomas Gleixner wrote:
> On Mon, 5 Oct 2015, Daniel J Blueman wrote:
>> +struct apicid_to_node {
>> +	int apicid;
>> +	s16 node;
>> +};
> 
> Instead of having this array, why don't you use a radix tree and be
> done with it?
Hi Thomas,
	It's in early booting stage and memory allocator isn't ready
yet.
Thanks,
Gerry
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