From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Russell King <linux@arm.linux.org.uk>
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linux-api <linux-api@vger.kernel.org>,
Michael Jeanson <mjeanson@efficios.com>
Subject: Re: [RFC PATCH v2 6/9] arm: allocate sys_membarrier system call number
Date: Wed, 16 Sep 2015 18:27:10 +0000 (UTC) [thread overview]
Message-ID: <2106738851.9514.1442428030540.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <1441642556-30972-7-git-send-email-mathieu.desnoyers@efficios.com>
----- On Sep 7, 2015, at 12:15 PM, 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. ]
Hi,
We tested the system call on our ARM board (Wandboard, SoC
Freescale i.MX6 Quad) by applying this patch on top of
Linux 4.3-rc1. Both the membarrier kselftest and
Userspace RCU regression tests (the latter manually wired up
on sys_membarrier) work fine.
Tested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
sys_membarrier has been pulled into Linux 4.3-rc1. Please
feel free to wire it up on ARM.
Thanks!
Mathieu
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
> CC: Andrew Morton <akpm@linux-foundation.org>
> CC: linux-api@vger.kernel.org
> CC: Russell King <linux@arm.linux.org.uk>
> ---
> arch/arm/include/asm/unistd.h | 2 +-
> arch/arm/include/uapi/asm/unistd.h | 1 +
> arch/arm/kernel/calls.S | 1 +
> 3 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
> index 32640c4..d93876c 100644
> --- a/arch/arm/include/asm/unistd.h
> +++ b/arch/arm/include/asm/unistd.h
> @@ -19,7 +19,7 @@
> * This may need to be greater than __NR_last_syscall+1 in order to
> * account for the padding in the syscall table
> */
> -#define __NR_syscalls (388)
> +#define __NR_syscalls (389)
>
> /*
> * *NOTE*: This is a ghost syscall private to the kernel. Only the
> diff --git a/arch/arm/include/uapi/asm/unistd.h
> b/arch/arm/include/uapi/asm/unistd.h
> index 0c3f5a0..436bb32 100644
> --- a/arch/arm/include/uapi/asm/unistd.h
> +++ b/arch/arm/include/uapi/asm/unistd.h
> @@ -414,6 +414,7 @@
> #define __NR_memfd_create (__NR_SYSCALL_BASE+385)
> #define __NR_bpf (__NR_SYSCALL_BASE+386)
> #define __NR_execveat (__NR_SYSCALL_BASE+387)
> +#define __NR_membarrier (__NR_SYSCALL_BASE+388)
>
> /*
> * The following SWIs are ARM private.
> diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
> index 05745eb..310699c 100644
> --- a/arch/arm/kernel/calls.S
> +++ b/arch/arm/kernel/calls.S
> @@ -397,6 +397,7 @@
> /* 385 */ CALL(sys_memfd_create)
> CALL(sys_bpf)
> CALL(sys_execveat)
> + CALL(sys_membarrier)
> #ifndef syscalls_counted
> .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
> #define syscalls_counted
> --
> 1.9.1
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
next prev parent reply other threads:[~2015-09-16 18:27 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-07 16:15 [PATCH v2 0/9] Allocate sys_membarrier on main architectures Mathieu Desnoyers
2015-09-07 16:15 ` [PATCH v2 1/9] [picked] powerpc: allocate sys_membarrier system call number Mathieu Desnoyers
2015-09-07 16:15 ` [PATCH v2 2/9] mips: " Mathieu Desnoyers
2015-09-16 15:04 ` Mathieu Desnoyers
2015-09-28 17:12 ` Mathieu Desnoyers
2015-09-07 16:15 ` [PATCH v2 3/9] sparc/sparc64: " Mathieu Desnoyers
2015-09-16 15:05 ` Mathieu Desnoyers
2015-09-16 17:57 ` David Miller
2015-09-16 18:06 ` Mathieu Desnoyers
2015-09-07 16:15 ` [PATCH v2 4/9] parisc: " Mathieu Desnoyers
2015-09-16 15:07 ` Mathieu Desnoyers
2015-09-16 19:56 ` Helge Deller
2015-09-07 16:15 ` [RFC PATCH v2 5/9] alpha: " Mathieu Desnoyers
2015-09-16 15:17 ` Mathieu Desnoyers
2015-09-07 16:15 ` [RFC PATCH v2 6/9] arm: " Mathieu Desnoyers
2015-09-16 18:27 ` Mathieu Desnoyers [this message]
2015-09-17 13:13 ` Russell King - ARM Linux
2015-09-17 13:37 ` Mathieu Desnoyers
2015-09-17 13:49 ` Russell King - ARM Linux
2015-09-07 16:15 ` [RFC PATCH v2 7/9] arm64: " Mathieu Desnoyers
2015-09-16 15:18 ` Mathieu Desnoyers
2015-09-16 16:35 ` Will Deacon
2015-09-16 16:38 ` Mathieu Desnoyers
2015-09-16 16:39 ` Will Deacon
2015-09-07 16:15 ` [RFC PATCH v2 8/9] ia64: " Mathieu Desnoyers
2015-09-16 15:19 ` Mathieu Desnoyers
2015-09-07 16:15 ` [RFC PATCH v2 9/9] s390/s390x: " Mathieu Desnoyers
2015-09-16 15:20 ` Mathieu Desnoyers
2015-09-17 11:39 ` Martin Schwidefsky
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