Re: [RFC PATCH 3/9] arm64: allocate sys_membarrier system call number
From: Will Deacon <hidden>
Date: 2015-09-02 10:10:55
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On Thu, Aug 27, 2015 at 06:56:49PM +0100, Mathieu Desnoyers wrote:
quoted hunk ↗ jump to hunk
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-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org> CC: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> CC: linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org CC: Catalin Marinas <redacted> CC: Will Deacon <redacted> --- 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)
I think people have made similar comments for other architectures, but please also updated __NR_compat_syscalls when adding new compat syscalls here. Will