[ 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 <[email protected]>
CC: Andrew Morton <[email protected]>
CC: [email protected]
CC: Richard Henderson <[email protected]>
CC: Ivan Kokshaysky <[email protected]>
CC: Matt Turner <[email protected]>
CC: [email protected]
---
 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
 
 #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

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