From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42BTLr6hj8zF33M for ; Fri, 14 Sep 2018 18:33:40 +1000 (AEST) Received: by mail-pg1-x544.google.com with SMTP id d19-v6so4066715pgv.1 for ; Fri, 14 Sep 2018 01:33:40 -0700 (PDT) From: Firoz Khan To: Arnd Bergmann , linuxppc-dev@lists.ozlabs.org, Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Ram Pai , Breno Leitao , Boqun Feng , Greg Kroah-Hartman , Philippe Ombredanne , Thomas Gleixner , Kate Stewart Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, deepa.kernel@gmail.com, marcin.juszkiewicz@linaro.org, firoz.khan@linaro.org Subject: [PATCH 1/3] powerpc: Replace NR_syscalls macro from asm/unistd.h Date: Fri, 14 Sep 2018 14:02:58 +0530 Message-Id: <1536913980-4811-2-git-send-email-firoz.khan@linaro.org> In-Reply-To: <1536913980-4811-1-git-send-email-firoz.khan@linaro.org> References: <1536913980-4811-1-git-send-email-firoz.khan@linaro.org> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , __NR_syscalls macro holds the number of system call exist in POWERPC architecture. This macro is currently the part of asm/unistd.h file. 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 number of system call information. So we have two option to update __NR_syscalls value. 1. Update __NR_syscalls in asm/unistd.h manually by counting the no.of system calls. No need to update __NR_syscalls untill we either add a new system call or delete an existing system call. 2. We can keep this feature it above mentioned script, that'll count the number of syscalls and keep it in a generated file. In this case we don't need to explicitly update __NR_syscalls in asm/unistd.h file. The 2nd option will be the recommended one. For that, I moved the NR_syscalls macro from asm/unistd.h to uapi/asm/unistd.h. The macro name also changed form NR_syscalls to __NR_syscalls 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. Signed-off-by: Firoz Khan --- arch/powerpc/include/asm/unistd.h | 3 +-- arch/powerpc/include/uapi/asm/unistd.h | 2 ++ 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index c19379f..54732f9 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -11,8 +11,7 @@ #include - -#define NR_syscalls 389 +#define NR_syscalls __NR_syscalls #define __NR__exit __NR_exit diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h index 985534d..f999df2 100644 --- a/arch/powerpc/include/uapi/asm/unistd.h +++ b/arch/powerpc/include/uapi/asm/unistd.h @@ -401,4 +401,6 @@ #define __NR_rseq 387 #define __NR_io_pgetevents 388 +#define __NR_syscalls 389 + #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */ -- 1.9.1