From patchwork Thu Jan 28 00:50:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 12051333 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B506C433DB for ; Thu, 28 Jan 2021 00:56:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 058F764DCD for ; Thu, 28 Jan 2021 00:56:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231277AbhA1Az3 (ORCPT ); Wed, 27 Jan 2021 19:55:29 -0500 Received: from conuserg-12.nifty.com ([210.131.2.79]:28375 "EHLO conuserg-12.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231132AbhA1AyI (ORCPT ); Wed, 27 Jan 2021 19:54:08 -0500 Received: from oscar.flets-west.jp (softbank126026094251.bbtec.net [126.26.94.251]) (authenticated) by conuserg-12.nifty.com with ESMTP id 10S0pjIX024172; Thu, 28 Jan 2021 09:51:48 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-12.nifty.com 10S0pjIX024172 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1611795109; bh=gbMbtPrd1uw4SfvZtDPN5tcO1lAksGEXidy2tzv1gck=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SWxDVkAFQuRWzyvDXKhEirM3GO9HVgiEkoPwsziGrvA7UHp95u8zOvl2m3BNNeRcn v0X+PTytGRvV0KXggsA0+sczavCS/X8fsffUaDv+X+yehtphUYPdkwYjeipobfCz/a 8pZmwG/BWtM/M2zhRXbfxUnzxSPcifSt4r5t5+vqnrh+liLvpH4qIj+8b5xaZCodWY l9jrY+Drka/f4haON0F/9+X4wb+aJTiV2DF+HEhY0UEXW6HzAPz/KVjoBqfgvW8k5Z +l+UHueS+m36Ex3b3/IZtMxZgI7SdQL2BTY2S5lFJxEGaNwIun784zcwCV86iKsFLo sXJ9FgfjTFX7g== X-Nifty-SrcIP: [126.26.94.251] From: Masahiro Yamada To: linux-arch@vger.kernel.org, x86@kernel.org Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-xtensa@linux-xtensa.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, Masahiro Yamada Subject: [PATCH 02/27] x86/syscalls: fix -Wmissing-prototypes warnings from COND_SYSCALL() Date: Thu, 28 Jan 2021 09:50:44 +0900 Message-Id: <20210128005110.2613902-3-masahiroy@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210128005110.2613902-1-masahiroy@kernel.org> References: <20210128005110.2613902-1-masahiroy@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org Building kernel/sys_ni.c with W=1 omits tons of -Wmissing-prototypes warnings. $ make W=1 kernel/sys_ni.o [ snip ] CC kernel/sys_ni.o In file included from kernel/sys_ni.c:10: ./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_io_setup' [-Wmissing-prototypes] 83 | __weak long __##abi##_##name(const struct pt_regs *__unused) \ | ^~ ./arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL' 100 | __COND_SYSCALL(x64, sys_##name) | ^~~~~~~~~~~~~~ ./arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL' 256 | __X64_COND_SYSCALL(name) \ | ^~~~~~~~~~~~~~~~~~ kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL' 39 | COND_SYSCALL(io_setup); | ^~~~~~~~~~~~ ./arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_io_setup' [-Wmissing-prototypes] 83 | __weak long __##abi##_##name(const struct pt_regs *__unused) \ | ^~ ./arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL' 120 | __COND_SYSCALL(ia32, sys_##name) | ^~~~~~~~~~~~~~ ./arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL' 257 | __IA32_COND_SYSCALL(name) | ^~~~~~~~~~~~~~~~~~~ kernel/sys_ni.c:39:1: note: in expansion of macro 'COND_SYSCALL' 39 | COND_SYSCALL(io_setup); | ^~~~~~~~~~~~ ... __SYS_STUB0() and __SYS_STUBx() defined a few lines above have forward declarations. Let's do likewise for __COND_SYSCALL() to fix the warnings. Signed-off-by: Masahiro Yamada --- arch/x86/include/asm/syscall_wrapper.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index a84333adeef2..80c08c7d5e72 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -80,6 +80,7 @@ extern long __ia32_sys_ni_syscall(const struct pt_regs *regs); } #define __COND_SYSCALL(abi, name) \ + __weak long __##abi##_##name(const struct pt_regs *__unused); \ __weak long __##abi##_##name(const struct pt_regs *__unused) \ { \ return sys_ni_syscall(); \