[RFC PATCH 1/9] powerpc: allocate sys_membarrier system call number

[Mathieu Desnoyers]

----- On Aug 31, 2015, at 2:54 AM, Michael Ellerman mpe at ellerman.id.au wrote:

> 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 at efficios.com>
>> CC: Andrew Morton <akpm at linux-foundation.org>
>> CC: linux-api at vger.kernel.org
>> CC: Benjamin Herrenschmidt <benh at kernel.crashing.org>
>> CC: Paul Mackerras <paulus at samba.org>
>> CC: Michael Ellerman <mpe at ellerman.id.au>
>> CC: linuxppc-dev at lists.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.

Great! I'll take care of your comments about self-tests,

Thanks,

Mathieu

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