linux-kernel - Re: [RFC PATCH 1/9] powerpc: allocate sys

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Message-ID: <1441004045.5735.8.camel@ellerman.id.au>
Date:	Mon, 31 Aug 2015 16:54:05 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [RFC PATCH 1/9] powerpc: allocate sys_membarrier system call
 number

On Thu, 2015-08-27 at 13:56 -0400, Mathieu Desnoyers wrote:
> Allow it to be used from SPU, since it should not have unwanted
> side-effects.
> 
> [ 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@...icios.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: linux-api@...r.kernel.org
> CC: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> CC: Paul Mackerras <paulus@...ba.org>
> CC: Michael Ellerman <mpe@...erman.id.au>
> CC: linuxppc-dev@...ts.ozlabs.org

Thanks.

I get:

$ ./membarrier_test
membarrier MEMBARRIER_CMD_QUERY syscall available.
membarrier: MEMBARRIER_CMD_SHARED success.
membarrier: tests done!

Which looks good.

Assuming the membarrier support hits 4.3, I'll take this via my tree for 4.3
also.

cheers


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