Re: [RFC PATCH v2 7/9] arm64: allocate sys_membarrier system call number
From: Mathieu Desnoyers <hidden>
Date: 2015-09-16 15:18:50
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----- On Sep 7, 2015, at 12:15 PM, Mathieu Desnoyers mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org wrote:
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. ]
Hi, sys_membarrier has been merged into Linux 4.3-rc1. sys_membarrier can therefore be tested on top of Linus' master. Thanks, Mathieu
quoted hunk ↗ jump to hunk
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/unistd.h | 2 +- arch/arm64/include/asm/unistd32.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-)diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 3bc498c..e70f7e7 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h@@ -44,7 +44,7 @@#define __ARM_NR_compat_cacheflush (__ARM_NR_COMPAT_BASE+2) #define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE+5) -#define __NR_compat_syscalls 388 +#define __NR_compat_syscalls 389 #endif #define __ARCH_WANT_SYS_CLONEdiff --git a/arch/arm64/include/asm/unistd32.hb/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
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com