Re: Need to allocate memory always in interrupt handler which MUST succeed.

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On Thu, 12 Oct 2006, pradeep singh wrote:

> > I need to allocate some 256 bytes of memory in the interrupt handler 
> > each time when I get the interrupt. Size varies from 8 bytes to 256 
> > bytes. There are various options such as (a)  kmalloc(GFP_ATOMIC),
> GFP_ATOMIC .... may sleep. try other flags available to kmalloc in
> interrupt context.

No, kmalloc(GFP_KERNEL) can't sleep. It can of course fail to allocate the 
requested amount of memory, but it will not sleep. 

-- 
Jiri Kosina

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