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Huge buffer allocation: best place

To: linux-mips@linux-mips.org
Subject: Huge buffer allocation: best place
From: "Luigi 'Comio' Mantellini" <luigi.mantellini.ml@gmail.com>
Date: Wed, 1 Oct 2008 20:30:53 +0200
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Hi ml,

I need to allocate a huge contiguous buffer (~6MByte) shared with a secondary cpu (a packet processor). Which is the best place and the best way to do this?

The main problem is that using a simple kmalloc at module init time there isn't sufficient contiguous memory to cover the request. I should use (I suppose) the alloc_bootmem_* macros but I'm not sure where is the best place to reserve my memory.

For now I defined a global bad huge vector... but I'm not happy for this solution...

thanks in advance.

luigi

--

Luigi Mantellini

R&D - Software

Industrie Dial Face S.p.A.

Via Canzo, 4

20068 Peschiera Borromeo (MI), Italy

Tel.: +39 02 5167 2813

Fax: +39 02 5167 2459

Email: luigi.mantellini@idf-hit.com

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