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: 12051359 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=-17.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D1B0CC433E0 for ; Thu, 28 Jan 2021 00:55:40 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 906DF64DCD for ; Thu, 28 Jan 2021 00:55:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 906DF64DCD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/7RBGZSshXe/yFwTR+ZIzpEhaMtbCnT3s0pZLy5iGqA=; b=Rh5fHr5zQsrPSdNyFK8M7iX/8 Tc/2NWMlzTwLpGQfUgLTjh7NyE2Rr1Y33EsjGzmczaRBz0h9gErdCoW+SbkVZ1PMSm9P2j5cw7jV5 fxTiFYjs9pXfysT3r6RnV+8vsXeo3jiIc8QmZlj56IuhMLpmmHiKq9vUcSCFP29KJkXCz9pn42GVf 2KeX2dTTbJ4aTr5E6MtX7yNaOlmVAEQL+nUdFzr7+S2bw+Xn4/48laaHqe7eZx/Ci8w7H+Pho3axZ kAAesonzMYut+A8r3iXBjFaYkrqLLQn0AqO1wcilPTimNJNGUvEuRGazf78dY4txhbmfmC29Ugwod uQr46Fl6w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4vZc-0008Ie-Ix; Thu, 28 Jan 2021 00:54:12 +0000 Received: from conuserg-12.nifty.com ([210.131.2.79]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4vXm-0007Yb-US; Thu, 28 Jan 2021 00:52:24 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210127_195219_387982_3CA4F5FA X-CRM114-Status: GOOD ( 10.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-xtensa@linux-xtensa.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, linux-kbuild@vger.kernel.org, Masahiro Yamada , linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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(); \