From patchwork Fri Oct 26 05:13:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Firoz Khan X-Patchwork-Id: 10656933 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6024B5A4 for ; Fri, 26 Oct 2018 05:13:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FEE82C6AF for ; Fri, 26 Oct 2018 05:13:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 33D442C6B3; Fri, 26 Oct 2018 05:13:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CA05B2C6AF for ; Fri, 26 Oct 2018 05:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726113AbeJZNtZ (ORCPT ); Fri, 26 Oct 2018 09:49:25 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:45995 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726354AbeJZNtY (ORCPT ); Fri, 26 Oct 2018 09:49:24 -0400 Received: by mail-pf1-f196.google.com with SMTP id t10-v6so3900110pfh.12 for ; Thu, 25 Oct 2018 22:13:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=gFcNXBX4l/6xItKhlgwTdqFlyHeCmRMGvdyUvQXs28g=; b=IiKyv8FeEAYyyW5ogH84j8mr5KrgMCL2k7oqKi7G8CsLL3y6G6zNO+ij0Mu8kNtdCN 0X+8FQrwVqUBMwysTfrZaMDyaUJ7Nc1ZOmua8mB8Mt4jkCKrCB59ZfIRVyldoguJblOS ozFKhVmdFoNK/AvMbS7Ya5chx7P/+cpZhAmXw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=gFcNXBX4l/6xItKhlgwTdqFlyHeCmRMGvdyUvQXs28g=; b=YCdzlMOs9l92vMbKM/h3PYZtXjnzqjakkgTDdtgIbg9EMYVbCblYBqhzAOgD1dEAE2 /wSufm5Xm9rEWE3a8N8Azd7KJtxwDoazmrM6miUhbpZl6YFY3OwKKQ3eFlGwFIkyPiiF D7R9hG/2hN/ov2OI9Afol39FvPd/lJr7/zzbRjjwR/8add58s73Vp3bxrfgg8Gy+lbA4 MY8m22OSD2rhx2LKVSJQArAFlgTHfZkvdSfClOEdCwUeBmeNBeL+9rhzYSoGuikj5zsD 7VI/ktfCXTyberQCxjn1AlJ6V3Btq8IJEqQGOaHPIkDlOCSYbZSuwRNslZhGAhP7H8mC A2nA== X-Gm-Message-State: AGRZ1gJQUPXowYmPp1kmZEasWWN1QYccgQKxSjsslP6o2rFuPPuYig/d 0FE/Ok2fxOEaNhkgmGdNciRc6zlCdQ4= X-Google-Smtp-Source: AJdET5eaQerlqiKMXyUh4WfxfnaoRHsWuhRYCUddCVer2+HTmtuS1hur5Fgp1ctLyRQgm+iQzYw+VQ== X-Received: by 2002:a63:f050:: with SMTP id s16-v6mr2054957pgj.403.1540530833916; Thu, 25 Oct 2018 22:13:53 -0700 (PDT) Received: from qualcomm-HP-ZBook-14-G2.domain.name ([49.207.61.165]) by smtp.gmail.com with ESMTPSA id m16-v6sm3329302pff.173.2018.10.25.22.13.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 25 Oct 2018 22:13:53 -0700 (PDT) From: Firoz Khan To: linux-parisc@vger.kernel.org, "James E . J . Bottomley" , Helge Deller , Thomas Gleixner , Greg Kroah-Hartman , Philippe Ombredanne , Kate Stewart Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, arnd@arndb.de, deepa.kernel@gmail.com, marcin.juszkiewicz@linaro.org, firoz.khan@linaro.org Subject: [PATCH v6 2/5] parisc: add __NR_syscalls along with __NR_Linux_syscalls Date: Fri, 26 Oct 2018 10:43:08 +0530 Message-Id: <1540530791-3961-3-git-send-email-firoz.khan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1540530791-3961-1-git-send-email-firoz.khan@linaro.org> References: <1540530791-3961-1-git-send-email-firoz.khan@linaro.org> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP __NR_Linux_syscalls macro holds the number of system call exist in parisc architecture. We have to change the value of __NR_Linux_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- _Linux_syscalls value. 1. Update __NR_Linux_syscalls in asm/unistd.h manually by counting the no.of system calls. No need to update __NR- _Linux_syscalls 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_Linux_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_Linux_syscalls asm/unistd.h. The macro __NR_sys- calls 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 --- arch/parisc/include/asm/unistd.h | 2 ++ arch/parisc/include/uapi/asm/unistd.h | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h index 93fd9f6..d30fdbcb 100644 --- a/arch/parisc/include/asm/unistd.h +++ b/arch/parisc/include/asm/unistd.h @@ -4,6 +4,8 @@ #include +#define __NR_Linux_syscalls __NR_syscalls + #ifndef __ASSEMBLY__ #define SYS_ify(syscall_name) __NR_##syscall_name diff --git a/arch/parisc/include/uapi/asm/unistd.h b/arch/parisc/include/uapi/asm/unistd.h index bb52e12..f10d065 100644 --- a/arch/parisc/include/uapi/asm/unistd.h +++ b/arch/parisc/include/uapi/asm/unistd.h @@ -366,7 +366,9 @@ #define __NR_statx (__NR_Linux + 349) #define __NR_io_pgetevents (__NR_Linux + 350) -#define __NR_Linux_syscalls (__NR_io_pgetevents + 1) +#ifdef __KERNEL__ +#define __NR_syscalls 351 +#endif #define LINUX_GATEWAY_ADDR 0x100