From patchwork Mon Jan 7 02:54:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dmitry V. Levin" X-Patchwork-Id: 10749825 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 AB4F314E2 for ; Mon, 7 Jan 2019 02:54:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 920952885E for ; Mon, 7 Jan 2019 02:54:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 85EE12888A; Mon, 7 Jan 2019 02:54:14 +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=-7.9 required=2.0 tests=BAYES_00,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 DECD52885E for ; Mon, 7 Jan 2019 02:54:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726657AbfAGCyN (ORCPT ); Sun, 6 Jan 2019 21:54:13 -0500 Received: from vmicros1.altlinux.org ([194.107.17.57]:55342 "EHLO vmicros1.altlinux.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726481AbfAGCyN (ORCPT ); Sun, 6 Jan 2019 21:54:13 -0500 Received: from mua.local.altlinux.org (mua.local.altlinux.org [192.168.1.14]) by vmicros1.altlinux.org (Postfix) with ESMTP id D448A72CC6C; Mon, 7 Jan 2019 05:54:10 +0300 (MSK) Received: by mua.local.altlinux.org (Postfix, from userid 508) id 6F8388E5C51; Mon, 7 Jan 2019 05:54:10 +0300 (MSK) Date: Mon, 7 Jan 2019 05:54:10 +0300 From: "Dmitry V. Levin" To: linux-kernel@vger.kernel.org Cc: Elvira Khabirova , Eugene Syromyatnikov , Paul Burton , Ralf Baechle , James Hogan , Oleg Nesterov , Andy Lutomirski , linux-mips@vger.kernel.org Subject: [PATCH v7 14/22] mips: define syscall_get_error() Message-ID: <20190107025410.GN1207@altlinux.org> References: <20190107025101.GA1182@altlinux.org> MIME-Version: 1.0 Content-Disposition: inline Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP syscall_get_error() is required to be implemented on all architectures in addition to already implemented syscall_get_nr(), syscall_get_arguments(), syscall_get_return_value(), and syscall_get_arch() functions in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. Acked-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: Oleg Nesterov Cc: Andy Lutomirski Cc: Elvira Khabirova Cc: Eugene Syromyatnikov Cc: linux-mips@vger.kernel.org Signed-off-by: Dmitry V. Levin --- Notes: v7: added Acked-by v6: unchanged v5: initial revision arch/mips/include/asm/syscall.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 6cf8ffb5367e..04ab927ff47d 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -89,6 +89,12 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, unreachable(); } +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->regs[7] ? -regs->regs[2] : 0; +} + static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) {