Re: Add SYSTEM_BOOTING_KMALLOC_AVAIL system_state

[Christoph Lameter]

On Mon, 8 May 2006, Andrew Morton wrote:

> >  SYSTEM_BOOTING to SYSTEM_RUNNING well after the bootmem allocator
> >  is no longer usable.  Introduce the SYSTEM_BOOTING_KMALLOC_AVAIL
> >  state which indicates the kmalloc allocator is available for use.
> 
> Let's not do this - system_state is getting out of control.
> 
> How about some private boolean in slab.c, and some special allocation
> function like
> 
> void __init *alloc_memory_early(size_t size, gfp_t gfp_flags)
> {
> 	if (slab_is_available)
> 		return kmalloc(size, gfp_flags);
> 	return alloc_bootmem(size);
> }	

You may use g_cpucache_up to check the state of the slab allocator.

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