linux-kernel - Re: [PATCHv4 1/5] lib/genalloc.c: Add power aligned algorithm

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Date:	Wed, 9 Jul 2014 15:35:21 -0700
From:	Olof Johansson <olof@...om.net>
To:	Will Deacon <will.deacon@....com>
Cc:	Laura Abbott <lauraa@...eaurora.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	David Riley <davidriley@...omium.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Ritesh Harjain <ritesh.harjani@...il.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv4 1/5] lib/genalloc.c: Add power aligned algorithm

On Thu, Jul 3, 2014 at 11:10 AM, Will Deacon <will.deacon@....com> wrote:
> On Wed, Jul 02, 2014 at 07:03:34PM +0100, Laura Abbott wrote:
>>
>> One of the more common algorithms used for allocation
>> is to align the start address of the allocation to
>> the order of size requested. Add this as an algorithm
>> option for genalloc.
>>
>> Signed-off-by: Laura Abbott <lauraa@...eaurora.org>
>> ---
>>  include/linux/genalloc.h |  4 ++++
>>  lib/genalloc.c           | 20 ++++++++++++++++++++
>>  2 files changed, 24 insertions(+)
>>
>> diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
>> index 1c2fdaa..3cd0934 100644
>> --- a/include/linux/genalloc.h
>> +++ b/include/linux/genalloc.h
>> @@ -110,6 +110,10 @@ extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
>>  extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
>>               unsigned long start, unsigned int nr, void *data);
>>
>> +extern unsigned long gen_pool_first_fit_order_align(unsigned long *map,
>> +             unsigned long size, unsigned long start, unsigned int nr,
>> +             void *data);
>> +
>
> You could also update gen_pool_first_fit to call this new function instead.

+1, that'd be slightly nicer and remove one exported symbol.

But, as Will says, up to you. Either option:

Acked-by: Olof Johansson <olof@...om.net>
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