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Subject: Re: [PATCH v2] x86/apic: Use smaller array for __apicid_to_node[]
 mapping
To: Thomas Gleixner <tglx@linutronix.de>,
        Daniel J Blueman <daniel@numascale.com>
References: <20151003074428.GA25143@gmail.com>
 <1444019550-21045-1-git-send-email-daniel@numascale.com>
 <alpine.DEB.2.11.1510091614020.6097@nanos>
Cc: Ingo Molnar <mingo@kernel.org>, Denys Vlasenko <dvlasenk@redhat.com>,
        Len Brown <len.brown@intel.com>, Steffen Persvold <sp@numascale.com>,
        linux-kernel@vger.kernel.org, x86@kernel.org
From: Jiang Liu <jiang.liu@linux.intel.com>
Organization: Intel
Message-ID: <5617DA66.1040006@linux.intel.com>
Date: Fri, 9 Oct 2015 23:16:54 +0800
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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