From b67bfd298f4c7ab3762aebb354a0b16635c82211 Mon Sep 17 00:00:00 2001 From: Firoz Khan Date: Tue, 13 Nov 2018 15:01:51 +0530 Subject: alpha: add __NR_syscalls along with NR_SYSCALLS NR_SYSCALLS macro holds the number of system call exist in alpha architecture. We have to change the value of NR- _SYSCALLS, if we add or delete a system call. One of the patch in this patch series has a script which will generate a uapi header based on syscall.tbl file. The syscall.tbl file contains the total number of system calls information. So we have two option to update NR_SY- CALLS value. 1. Update NR_SYSCALLS in asm/unistd.h manually by count- ing the no.of system calls. No need to update NR_SYS- CALLS until we either add a new system call or delete existing system call. 2. We can keep this feature it above mentioned script, that will count the number of syscalls and keep it in a generated file. In this case we don't need to expli- citly update NR_SYSCALLS in asm/unistd.h file. The 2nd option will be the recommended one. For that, I added the __NR_syscalls macro in uapi/asm/unistd.h along with NR_SYSCALLS asm/unistd.h. The macro __NR_syscalls also added for making the name convention same across all architecture. While __NR_syscalls isn't strictly part of the uapi, having it as part of the generated header to simplifies the implementation. We also need to enclose this macro with #ifdef __KERNEL__ to avoid side effects. Signed-off-by: Firoz Khan Signed-off-by: Matt Turner --- arch/alpha/include/uapi/asm/unistd.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/alpha/include/uapi/asm') diff --git a/arch/alpha/include/uapi/asm/unistd.h b/arch/alpha/include/uapi/asm/unistd.h index 47c65f199ec7..ab40aa6c4898 100644 --- a/arch/alpha/include/uapi/asm/unistd.h +++ b/arch/alpha/include/uapi/asm/unistd.h @@ -465,4 +465,8 @@ #define __NR_pwritev2 521 #define __NR_statx 522 +#ifdef __KERNEL__ +#define __NR_syscalls 523 +#endif + #endif /* _UAPI_ALPHA_UNISTD_H */ -- cgit v1.2.3