From patchwork Wed May 17 13:11:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 95241 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp1127151vqo; Wed, 17 May 2023 06:15:09 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ52gynYHWNjhxayowkyGgfQtiUP4Xb8I/ryfKGjSTTwiSajdmIx1JHhuWXjZ6pCKmRlwwne X-Received: by 2002:a17:90a:ccf:b0:24e:1ca6:2206 with SMTP id 15-20020a17090a0ccf00b0024e1ca62206mr2721428pjt.8.1684329309553; Wed, 17 May 2023 06:15:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1684329309; cv=none; d=google.com; s=arc-20160816; b=M7VYFPbxg1ABBgTZcfx/XcUGL6Y4Dj/5Tcs/a0o1ZB7R6hve7744xTe62c7Zj4dDUM LtRWdsaf9bdUwuYG7n7bZvFniQdajnNyPB83RrkoTQL+dGwfqocBRorq74fUQKxxCQ+A LqF1tlZjKV8C9bgAuyVBVA6fqDAav2uhmDKToj+vF1IzjMZxarX0fDKrz8kvak30/aRp sJxRjnS7C8rMm8DtpXY1+ebt03/w8eFY/Tnk6twgTsKOOfN/GjrA3JRVNuLax4QBZb7u G30V2GfpejwfJKXbzSAX1jifCCWEzvmfqSCx9MKfed3+Pl9Y2lx4J8q4MczfjqrVtM0E 5TAw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=zJrxNjMRYWYphQhJfEtyNbVpJX9ShoonVG9VITyf/oc=; b=MzEYhdLceuQLzcEakgp3+LThxAYDLeweDaLnuUw4Dw8wucARZl+tio9ezPAZvhENkl lrHJMDdJLvgjJrvfxlpLAAUTIsCJ8hf7ra2rMvBTlwzynsF7olUNhW0MUjPQ8UTPlcrI RfEfktk60AIx69U22HX1H0eaLfU6rZF11v+//7NJP/53xkFR+96Ty0OZkObZUtyhMSCC rsbatERdnhLvMgEl+1Jz84hpB4s6XKkdQ6/czL77NRaYT6EOrdhja0slSjoSDvbRvFxP c3YTBWENwGIiTL7RFYiuem+cK+O7phsw796PgFI6aIgB2GHv9SDmcR2cGJx3A5X4/S8+ aqlA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=KZhlxehR; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id nm14-20020a17090b19ce00b00246f8b06125si1697187pjb.108.2023.05.17.06.14.56; Wed, 17 May 2023 06:15:09 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=KZhlxehR; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232065AbjEQNOB (ORCPT + 99 others); Wed, 17 May 2023 09:14:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232034AbjEQNNk (ORCPT ); Wed, 17 May 2023 09:13:40 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E86E87ED0; Wed, 17 May 2023 06:13:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 08718641C7; Wed, 17 May 2023 13:13:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A0DAC433D2; Wed, 17 May 2023 13:13:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684329198; bh=tA8vDceOtwnaYEmuvRonEkfnHU5EgkwYZJxxRjDBrtY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KZhlxehR2rDeiAnVDqzTiOa3ksnRODBJzi001SQy9km83BCh+sSslpUVguoSeN8Il uwXHjW+IYnLrcNsvGw9/vc5PlLdSb4Gcq8SNGb+9U7jqrv+4zSwUd9/9bPNimcMQok LPjRXrVXwWwUwdDMoTBXVMqAwdmMv0pYUVWZ/lWbR3Sum2O620By8zNUB4CsRzRnGT B8+bZt42Vt5lZ795+/xA9/1lKx/j2eJjWnya+dwVW+/eXJBG2ACQBiEl2QIn7S24uR aIHSN8P8r0X9oWG4waSTw5ry47uHOhsMogxlxAjjiT3E57B6sfhCFfCGfKcQYgqDcQ jSutqMkSXP8Ng== From: Arnd Bergmann To: Andrew Morton Cc: linux-mm@kvack.org, Arnd Bergmann , Russell King , Catalin Marinas , Will Deacon , Michal Simek , Thomas Bogendoerfer , Helge Deller , Michael Ellerman , Palmer Dabbelt , Heiko Carstens , Thomas Gleixner , Ingo Molnar , x86@kernel.org, "Rafael J. Wysocki" , Paul Moore , Eric Paris , Dennis Zhou , Tejun Heo , Christoph Lameter , Pavel Machek , Peter Zijlstra , Waiman Long , Boqun Feng , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, audit@vger.kernel.org, linux-pm@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com Subject: [PATCH 13/14] thread_info: move function declarations to linux/thread_info.h Date: Wed, 17 May 2023 15:11:01 +0200 Message-Id: <20230517131102.934196-14-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230517131102.934196-1-arnd@kernel.org> References: <20230517131102.934196-1-arnd@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1766147289879776192?= X-GMAIL-MSGID: =?utf-8?q?1766147289879776192?= From: Arnd Bergmann There are a few __weak functions in kernel/fork.c, which architectures can override. If there is no prototype, the compiler warns about them: kernel/fork.c:164:13: error: no previous prototype for 'arch_release_task_struct' [-Werror=missing-prototypes] kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes] kernel/fork.c:1086:12: error: no previous prototype for 'arch_dup_task_struct' [-Werror=missing-prototypes] There are already prototypes in a number of architecture specific headers that have addressed those warnings before, but it's much better to have these in a single place so the warning no longer shows up anywhere. Signed-off-by: Arnd Bergmann Acked-by: Catalin Marinas --- arch/arm64/include/asm/thread_info.h | 4 ---- arch/s390/include/asm/thread_info.h | 3 --- arch/sh/include/asm/thread_info.h | 3 --- arch/x86/include/asm/thread_info.h | 3 --- include/linux/thread_info.h | 5 +++++ 5 files changed, 5 insertions(+), 13 deletions(-) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 848739c15de8..553d1bc559c6 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -55,10 +55,6 @@ struct thread_info { void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec -void arch_release_task_struct(struct task_struct *tsk); -int arch_dup_task_struct(struct task_struct *dst, - struct task_struct *src); - #endif #define TIF_SIGPENDING 0 /* signal pending */ diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index c7c97921ed8d..a674c7d25da5 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -52,9 +52,6 @@ struct thread_info { struct task_struct; -void arch_release_task_struct(struct task_struct *tsk); -int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); - void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 1400fbb8b423..9f19a682d315 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -84,9 +84,6 @@ static inline struct thread_info *current_thread_info(void) #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -extern void arch_task_cache_init(void); -extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); -extern void arch_release_task_struct(struct task_struct *tsk); extern void init_thread_xstate(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index f1cccba52eb9..d63b02940747 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -232,9 +232,6 @@ static inline int arch_within_stack_frames(const void * const stack, current_thread_info()->status & TS_COMPAT) #endif -extern void arch_task_cache_init(void); -extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src); -extern void arch_release_task_struct(struct task_struct *tsk); extern void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec #endif /* !__ASSEMBLY__ */ diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index c02646884fa8..9ea0b28068f4 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -256,6 +256,11 @@ check_copy_size(const void *addr, size_t bytes, bool is_source) static inline void arch_setup_new_exec(void) { } #endif +void arch_task_cache_init(void); /* for CONFIG_SH */ +void arch_release_task_struct(struct task_struct *tsk); +int arch_dup_task_struct(struct task_struct *dst, + struct task_struct *src); + #endif /* __KERNEL__ */ #endif /* _LINUX_THREAD_INFO_H */