Re: Add SYSTEM_BOOTING_KMALLOC_AVAIL system_state

[Andrew Morton <akpm@osdl.org>]

Mike Kravetz <kravetz@us.ibm.com> wrote:
>
> There are a few places that check the system_state variable to
>  determine if they should use the bootmem or kmalloc allocator.
>  However, this is not accurate as system_state transitions from
>  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);
}	

?