linux-kernel - Re: [PATCH 3/3] arm64: include: asm: atomic.h: use 'unsigned int' and 'atomic_t' instead of 'unsigned long' for atomic_clear

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Date:	Fri, 11 Oct 2013 19:25:39 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Will Deacon <will.deacon@....com>
CC:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"linux390@...ibm.com" <linux390@...ibm.com>,
	"linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] arm64: include: asm: atomic.h: use 'unsigned int'
 and 'atomic_t' instead of 'unsigned long' for atomic_clear_mask()

On 10/11/2013 06:44 PM, Will Deacon wrote:
> On Fri, Oct 11, 2013 at 02:18:26AM +0100, Chen Gang wrote:
>> On 10/10/2013 10:23 PM, Will Deacon wrote:
>>> On Thu, Oct 10, 2013 at 12:03:52PM +0100, Chen Gang wrote:
>>>> BTW: do arm64 need atomic_clear_mask()?
>>>
>>> No. Neither ARM nor arm64 need this function.
>>
>> OK, thank you for your confirmation.
>>
>> Hmm... can we remove atomic_clear_mask() from ARM and arm64? (in my
>> opinion, if not need, better to remove it).
> 
> Yes!
> 

OK, thanks.

> I mentioned this a few times already...
> 

Hmm... firstly, you mentioned "except architectures, this is only used
under s390" (so I reply we need follow s390), and then you mentioned
"they are useless for arm/arm64" (so I ask whether it can be removed).

Excuse me, as a 'programmer' (at least, I am a 'programmer'), when
programming (assume our discussing belongs to programming), I have to
consider precisely (especially for confirmation words).  ;-)

I will send one patch for removing it from arm and arm64.

Thanks.

> Will
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Thanks.
-- 
Chen Gang

-- 
Chen Gang
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