linux-kernel - Re: Query about merging memblock and bootmem into one new alloc

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Message-ID: <567835B4.3090101@redhat.com>
Date:	Mon, 21 Dec 2015 09:24:04 -0800
From:	Laura Abbott <labbott@...hat.com>
To:	Sumit Gupta <sumit.g.007@...il.com>, inux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: Query about merging memblock and bootmem into one new alloc

On 12/19/2015 05:57 AM, Sumit Gupta wrote:
> Hi All,
>
> For ARM Linux, during booting first memblock reserves memory regions
> then bootmem allocator create node, mem_map, page bitmap data and then
> hands over to buddy.
> I have been thinking from some time about why we need two different
> allocators for this.
> Can we merge both into one(memblock into bootmem) or create a new
> allocator which can speed up the same thing which is easy to enhance
> in future.
> I am not sure about this and whether it's good idea or will it be fruitful.
>
> Please suggest and share your opinion.
>
> Thank you in advance for your help.
>

ARM no longer uses bootmem, just memblock (see 84f452b1e8fc73ac0e31254c66e3e2260ce5263d
ARM: mm: Remove bootmem code and switch to NO_BOOTMEM). Any bootmem calls
just go to mm/nobootmem.c which is a wrapper around memblock for compatibility.

Thanks,
Laura


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