linux-kernel - Re: [PATCH v2 08/23] mm/memblock: Add memblock memory allocation apis

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Message-ID: <20131205185116.GA27274@mtj.dyndns.org>
Date:	Thu, 5 Dec 2013 13:51:16 -0500
From:	Tejun Heo <tj@...nel.org>
To:	"Strashko, Grygorii" <grygorii.strashko@...com>
Cc:	"Shilimkar, Santosh" <santosh.shilimkar@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2 08/23] mm/memblock: Add memblock memory allocation apis

Hey,

On Thu, Dec 05, 2013 at 06:48:21PM +0000, Strashko, Grygorii wrote:
> +/* Fall back to all the existing bootmem APIs */
> +#define memblock_virt_alloc(x) \
> +       __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
> 
> which will be transformed to 
> +/* Fall back to all the existing bootmem APIs */
> +#define memblock_virt_alloc(x, align) \
> +       __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT)
> 
> and used as
> 
> memblock_virt_alloc(size, 0);
> 
> so, by default bootmem code will use 0 as default alignment and not SMP_CACHE_BYTES
> and that is wrong.

Just translate it to SMP_CACHE_BYTES?  Am I missing something here?
You're defining a new API which wraps around two interfaces.  Wrap
them so that they show the same desired behavior?

-- 
tejun
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