Re: [RFC PATCH 7/9] alpha: allocate sys_membarrier system call number

Matt Turner
2015-08-27T18:34:42Z

On Thu, Aug 27, 2015 at 10:56 AM, Mathieu Desnoyers
<mathieu.desnoyers@efficios.com> 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: Richard Henderson <rth@twiddle.net>
> CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
> CC: Matt Turner <mattst88@gmail.com>
> CC: linux-alpha@vger.kernel.org
> ---
> arch/alpha/include/uapi/asm/unistd.h | 1 +
> arch/alpha/kernel/systbls.S | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/arch/alpha/include/uapi/asm/unistd.h b/arch/alpha/include/uapi/asm/unistd.h
> index aa33bf5..7725619 100644
> --- a/arch/alpha/include/uapi/asm/unistd.h
> +++ b/arch/alpha/include/uapi/asm/unistd.h
> @@ -475,5 +475,6 @@
> #define __NR_getrandom 511
> #define __NR_memfd_create 512
> #define __NR_execveat 513
> +#define __NR_membarrier 514

NR_SYSCALLS in arch/alpha/include/asm/unistd.h needs to be updated as well.

>
> #endif /* _UAPI_ALPHA_UNISTD_H */
> diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
> index 9b62e3f..1ea64f4 100644
> --- a/arch/alpha/kernel/systbls.S
> +++ b/arch/alpha/kernel/systbls.S
> @@ -532,6 +532,7 @@ sys_call_table:
> .quad sys_getrandom
> .quad sys_memfd_create
> .quad sys_execveat
> + .quad sys_membarrier
>
> .size sys_call_table, . - sys_call_table
> .type sys_call_table, @object
> --
> 1.9.1
>