From: Richard Weinberger <richard@nod.at>
To: Will Deacon <will.deacon@arm.com>
Cc: Richard Weinberger <richard.weinberger@gmail.com>,
Chen Gang <gang.chen@asianux.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"linux390@de.ibm.com" <linux390@de.ibm.com>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h"
Date: Fri, 11 Oct 2013 15:03:12 +0200 [thread overview]
Message-ID: <5257F710.5090706@nod.at> (raw)
In-Reply-To: <20131011122846.GK14732@mudshark.cambridge.arm.com>
Am 11.10.2013 14:28, schrieb Will Deacon:
> On Fri, Oct 11, 2013 at 01:08:17PM +0100, Richard Weinberger wrote:
>> On Fri, Oct 11, 2013 at 1:47 PM, Chen Gang <gang.chen@asianux.com> wrote:
>>> In current kernel wide source code, except other architectures, only
>>> s390 scsi drivers use atomic_clear_mask(), and arm/arm64 need not
>>> support s390 drivers.
>>>
>>> So remove atomic_clear_mask() from "arm[64]/include/asm/atomic.h".
>>
>> Is it really worth removing such a primitive?
>> If someone needs it later he has to implement it from scratch and
>> introduces bugs...
>
> The version we have (on ARM64 anyway) already has bugs. Given the choice
> between fixing code that has no callers and simply removing it, I'd go for
> the latter.
Yeah, if it's broken and has no real users, send it to hell. :)
Thanks,
//richard
next prev parent reply other threads:[~2013-10-11 13:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-10 2:30 [PATCH 0/3] s390/arm/arm64: include: asm: atomic.h: use 'unsigned int' and 'atomic_t' instead of 'unsigned long' for atomic_*_mask() Chen Gang
2013-10-10 2:31 ` [PATCH 1/3] s390: include: asm: atomic.h: use 'unsigned int' " Chen Gang
2013-10-10 2:34 ` [PATCH 2/3] arm: include: asm: atomic.h: use 'unsigned int' and 'atomic' instead of 'unsigned long' for atomic_clear_mask() Chen Gang
2013-10-10 2:35 ` [PATCH 3/3] arm64: include: asm: atomic.h: use 'unsigned int' and 'atomic_t' " Chen Gang
2013-10-10 10:07 ` Will Deacon
2013-10-10 11:03 ` Chen Gang
2013-10-10 14:23 ` Will Deacon
2013-10-11 1:18 ` Chen Gang
2013-10-11 10:44 ` Will Deacon
2013-10-11 11:25 ` Chen Gang
2013-10-11 11:47 ` [PATCH] arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h" Chen Gang
2013-10-11 12:08 ` Richard Weinberger
2013-10-11 12:28 ` Will Deacon
2013-10-11 13:03 ` Richard Weinberger [this message]
2013-10-12 1:36 ` Chen Gang
2013-10-12 2:09 ` Chen Gang
2013-10-11 16:55 ` Will Deacon
2013-10-12 1:46 ` Chen Gang
2013-10-12 22:28 ` Catalin Marinas
2013-10-10 9:58 ` [PATCH 2/3] arm: include: asm: atomic.h: use 'unsigned int' and 'atomic' instead of 'unsigned long' for atomic_clear_mask() Will Deacon
2013-10-10 11:02 ` Chen Gang
2013-10-10 7:25 ` [PATCH 1/3] s390: include: asm: atomic.h: use 'unsigned int' instead of 'unsigned long' for atomic_*_mask() Heiko Carstens
2013-10-10 7:34 ` Chen Gang
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