Re: [PATCH v2 3/9] sparc/sparc64: allocate sys_membarrier system call number

From: Mathieu Desnoyers
Date: Wed Sep 16 2015 - 11:06:09 EST


----- On Sep 7, 2015, at 12:15 PM, Mathieu Desnoyers mathieu.desnoyers@xxxxxxxxxxxx wrote:

> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
> Acked-by: "David S. Miller" <davem@xxxxxxxxxxxxx>
> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> CC: linux-api@xxxxxxxxxxxxxxx
> CC: sparclinux@xxxxxxxxxxxxxxx

Hi,

FYI, sys_membarrier has been merged upstream in Linux 4.3-rc1. Feel free
to wire up this system call on sparc.

Thanks!

Mathieu

> ---
> arch/sparc/include/uapi/asm/unistd.h | 3 ++-
> arch/sparc/kernel/systbls_32.S | 2 +-
> arch/sparc/kernel/systbls_64.S | 4 ++--
> 3 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/arch/sparc/include/uapi/asm/unistd.h
> b/arch/sparc/include/uapi/asm/unistd.h
> index 6f35f4d..efe9479 100644
> --- a/arch/sparc/include/uapi/asm/unistd.h
> +++ b/arch/sparc/include/uapi/asm/unistd.h
> @@ -416,8 +416,9 @@
> #define __NR_memfd_create 348
> #define __NR_bpf 349
> #define __NR_execveat 350
> +#define __NR_membarrier 351
>
> -#define NR_syscalls 351
> +#define NR_syscalls 352
>
> /* Bitmask values returned from kern_features system call. */
> #define KERN_FEATURE_MIXED_MODE_STACK 0x00000001
> diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
> index e31a905..cc23b62 100644
> --- a/arch/sparc/kernel/systbls_32.S
> +++ b/arch/sparc/kernel/systbls_32.S
> @@ -87,4 +87,4 @@ sys_call_table:
> /*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv,
> sys_process_vm_writev
> /*340*/ .long sys_ni_syscall, sys_kcmp, sys_finit_module, sys_sched_setattr,
> sys_sched_getattr
> /*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create,
> sys_bpf
> -/*350*/ .long sys_execveat
> +/*350*/ .long sys_execveat, sys_membarrier
> diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
> index d72f76a..f229468 100644
> --- a/arch/sparc/kernel/systbls_64.S
> +++ b/arch/sparc/kernel/systbls_64.S
> @@ -88,7 +88,7 @@ sys_call_table32:
> .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv,
> compat_sys_process_vm_writev
> /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr,
> sys_sched_getattr
> .word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
> -/*350*/ .word sys32_execveat
> +/*350*/ .word sys32_execveat, sys_membarrier
>
> #endif /* CONFIG_COMPAT */
>
> @@ -168,4 +168,4 @@ sys_call_table:
> .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv,
> sys_process_vm_writev
> /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr,
> sys_sched_getattr
> .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
> -/*350*/ .word sys64_execveat
> +/*350*/ .word sys64_execveat, sys_membarrier
> --
> 1.9.1

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