Re: Memory allocation Failure problem with kmalloc.

From: Jesper Juhl
Date: Thu Jul 20 2006 - 04:25:47 EST

On 20/07/06, Subbu <subbu@xxxxxxxxxx> wrote:


I am working on 2.4.20 kernel.

I need to allocate memory with kmalloc.

kmalloc fails because i want to allocate more than 128kb. How to handle
this issue.

Please help me in this regard.

How i can allocate memory of size equal to 1Mb with kmalloc or any other
function (2.4 kernel)

kmalloc() allocates physically contiguous pages. 1M is a hell of a lot
of contig pages to ask for. I doubt you can get that much except at
early boot. But, if the pages don't actually need to be physically
contiguous, then you can use vmalloc() - it'll give you a virtually
contiguous range but the pages are not nessesarily physically

Why do you need this much btw?

Jesper Juhl <jesper.juhl@xxxxxxxxx>
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