From patchwork Tue Jan 14 20:08:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 1223033 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=synopsys.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20170209 header.b=iNp8y1O2; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=synopsys.com header.i=@synopsys.com header.a=rsa-sha256 header.s=mail header.b=NiiQjz1N; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47y1kS6XP0z9sR1 for ; Wed, 15 Jan 2020 07:09:04 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.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=vXvUIERJUb6rhWLkZrCHqJ6ihKOESjK0jwi7LEccbME=; b=iNp8y1O2wUy9KZ vHNDYCpBwHZFaW0jJJnNI77KxoQlMrmrZCL6QLRSD2QRTv5LkkIwiSurPRzQEVAActws/2gRvH3Rx AzfmLY3rIakHuAtEF8EoHlm0S7volwu9R7MK1XFfyiws0X8l2gMk7rxXLuN3mL0ghhOTeLpFQkg7q qOQlN0qhnGIW11ej5ZwkiRA2WHgPBOb0KauTywrsXlyv+jH+Utw5Ap/2DFXSC9eC5/NY/8j4ENysW ryw6rlXpvNBJAarqIoSw/72NWpz6psBrXQwuPv5XC2FWiS8LR2olD1hsoFiN59zUlGax4zCRp/XAq w27vT8Y07gDqLCLHBUIg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1irSUp-0003XU-Em; Tue, 14 Jan 2020 20:09:03 +0000 Received: from sv2-smtprelay2.synopsys.com ([149.117.73.133] helo=smtprelay-out1.synopsys.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1irSUj-0003UY-7P for linux-snps-arc@lists.infradead.org; Tue, 14 Jan 2020 20:09:00 +0000 Received: from mailhost.synopsys.com (sv2-mailhost1.synopsys.com [10.205.2.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id CE7D3406F6; Tue, 14 Jan 2020 20:08:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1579032536; bh=k2Aw6T3dro6lYhVtIAfADIDnnJvA49ZT1cQEazYA+7Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NiiQjz1NmyNR9Z2NtbJ36Z/NZoKH5sY6byc2zPPKl5fq/SU5MgDPVb5SDAp3KNHEW fj/pvvv6mO3+1rDnCbwE4kjMI8TJoOEblhwYJO7W0RA0HsPV9lzV8IklNN4eM6OEfJ imqhvfT9B1JiSBWc7TnokpdY5fw6hk7WtUecsBNap8xOh8zJRQbww/THbyD9xqLFZV /HKms2Y147qs615Ty3p6/oNEe+FNrSEBFUGpbjJ0fzXltMlZ5GMHYwhqUEAFdPxpxw qJjcbea0OIZZgzWCuKKyU1+yaQB0V5kNcrMHZVP83CPgXJ+olWoYDI6fM4e2PcHJAT wr8Q3rrYm/5fQ== Received: from vineetg-Latitude-E7450.internal.synopsys.com (vineetg-latitude-e7450.internal.synopsys.com [10.10.161.25]) by mailhost.synopsys.com (Postfix) with ESMTP id 6CB86A00A2; Tue, 14 Jan 2020 20:08:55 +0000 (UTC) From: Vineet Gupta To: Arnd Bergmann , Khalid Aziz , Andrey Konovalov , Andrew Morton , Peter Zijlstra , Christian Brauner , Kees Cook , Ingo Molnar , Aleksa Sarai , Linus Torvalds Subject: [RFC 3/4] ARC: uaccess: remove noinline variants of __strncpy_from_user() and friends Date: Tue, 14 Jan 2020 12:08:45 -0800 Message-Id: <20200114200846.29434-4-vgupta@synopsys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200114200846.29434-1-vgupta@synopsys.com> References: <20200114200846.29434-1-vgupta@synopsys.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200114_120857_308630_E92F0179 X-CRM114-Status: UNSURE ( 9.69 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, Vineet Gupta , linux-snps-arc@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org This helps with subsequent removal of arch specific variants in favour of optimized generic routines (word vs byte access) Signed-off-by: Vineet Gupta --- arch/arc/include/asm/uaccess.h | 26 ++++++-------------------- arch/arc/mm/extable.c | 23 ----------------------- 2 files changed, 6 insertions(+), 43 deletions(-) diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index ea40ec7f6cae..0b34c152086f 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -613,7 +613,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n) return res; } -static inline unsigned long __arc_clear_user(void __user *to, unsigned long n) +static inline unsigned long __clear_user(void __user *to, unsigned long n) { long res = n; unsigned char *d_char = to; @@ -656,7 +656,7 @@ static inline unsigned long __arc_clear_user(void __user *to, unsigned long n) } static inline long -__arc_strncpy_from_user(char *dst, const char __user *src, long count) +__strncpy_from_user(char *dst, const char __user *src, long count) { long res = 0; char val; @@ -688,7 +688,7 @@ __arc_strncpy_from_user(char *dst, const char __user *src, long count) return res; } -static inline long __arc_strnlen_user(const char __user *s, long n) +static inline long __strnlen_user(const char __user *s, long n) { long res, tmp1, cnt; char val; @@ -718,26 +718,12 @@ static inline long __arc_strnlen_user(const char __user *s, long n) return res; } -#ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE - #define INLINE_COPY_TO_USER #define INLINE_COPY_FROM_USER -#define __clear_user(d, n) __arc_clear_user(d, n) -#define __strncpy_from_user(d, s, n) __arc_strncpy_from_user(d, s, n) -#define __strnlen_user(s, n) __arc_strnlen_user(s, n) -#else -extern unsigned long arc_clear_user_noinline(void __user *to, - unsigned long n); -extern long arc_strncpy_from_user_noinline (char *dst, const char __user *src, - long count); -extern long arc_strnlen_user_noinline(const char __user *src, long n); - -#define __clear_user(d, n) arc_clear_user_noinline(d, n) -#define __strncpy_from_user(d, s, n) arc_strncpy_from_user_noinline(d, s, n) -#define __strnlen_user(s, n) arc_strnlen_user_noinline(s, n) - -#endif +#define __clear_user __clear_user +#define __strncpy_from_user __strncpy_from_user +#define __strnlen_user __strnlen_user #include #include diff --git a/arch/arc/mm/extable.c b/arch/arc/mm/extable.c index b06b09ddf924..88fa3a4d4906 100644 --- a/arch/arc/mm/extable.c +++ b/arch/arc/mm/extable.c @@ -22,26 +22,3 @@ int fixup_exception(struct pt_regs *regs) return 0; } - -#ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE - -unsigned long arc_clear_user_noinline(void __user *to, - unsigned long n) -{ - return __arc_clear_user(to, n); -} -EXPORT_SYMBOL(arc_clear_user_noinline); - -long arc_strncpy_from_user_noinline(char *dst, const char __user *src, - long count) -{ - return __arc_strncpy_from_user(dst, src, count); -} -EXPORT_SYMBOL(arc_strncpy_from_user_noinline); - -long arc_strnlen_user_noinline(const char __user *src, long n) -{ - return __arc_strnlen_user(src, n); -} -EXPORT_SYMBOL(arc_strnlen_user_noinline); -#endif