[RFC PATCH 3/9] arm64: allocate sys_membarrier system call number

Mathieu Desnoyers
2015-08-27T18:03:13Z

arm64 sys_membarrier number is already wired for arm64 through
asm-generic/unistd.h, but needs to be allocated separately for
the 32-bit compability layer of arm64.

[ 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: Catalin Marinas <catalin.marinas@arm.com>
CC: Will Deacon <will.deacon@arm.com>
---
arch/arm64/include/asm/unistd32.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index cef934a..d97be80 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -797,3 +797,5 @@ __SYSCALL(__NR_memfd_create, sys_memfd_create)
__SYSCALL(__NR_bpf, sys_bpf)
#define __NR_execveat 387
__SYSCALL(__NR_execveat, compat_sys_execveat)
+#define __NR_membarrier 388
+__SYSCALL(__NR_membarrier, sys_membarrier)
--
1.9.1