Re: [RFC PATCH 4/9] mips: allocate sys_membarrier system call number

From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-api <linux-api@vger.kernel.org>,
	linux-kernel@vger.kernel.org, linux-mips@linux-mips.org
Subject: Re: [RFC PATCH 4/9] mips: allocate sys_membarrier system call number
Date: Fri, 28 Aug 2015 14:06:12 +0000 (UTC)	[thread overview]
Message-ID: <815178017.30970.1440770772982.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <20150828074034.GA22604@linux-mips.org>

----- On Aug 28, 2015, at 3:40 AM, Ralf Baechle ralf@linux-mips.org wrote:

> On Thu, Aug 27, 2015 at 01:56:50PM -0400, Mathieu Desnoyers wrote:
> 
>> [ Untested on this architecture. To try it out: fetch linux-next/akpm,
>>   apply this patch, build/run a membarrier-enabled kernel, and do make
>>   kselftest. ]
>> 
>> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
>> CC: Andrew Morton <akpm@linux-foundation.org>
>> CC: linux-api@vger.kernel.org
>> CC: Ralf Baechle <ralf@linux-mips.org>
>> CC: linux-mips@linux-mips.org
>> ---
>>  arch/mips/include/uapi/asm/unistd.h | 15 +++++++++------
>>  arch/mips/kernel/scall32-o32.S      |  1 +
>>  arch/mips/kernel/scall64-64.S       |  1 +
>>  arch/mips/kernel/scall64-n32.S      |  1 +
>>  arch/mips/kernel/scall64-o32.S      |  1 +
>>  5 files changed, 13 insertions(+), 6 deletions(-)
> 
> Looking good assuming there is no compat syscall required.

Indeed, sys_membarrier only takes two integer arguments, so no
compat syscall is required.

Thanks!

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com