From patchwork Wed Jul 31 16:12:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Murray X-Patchwork-Id: 11068615 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 9E950912 for ; Wed, 31 Jul 2019 16:14:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 89B331FF28 for ; Wed, 31 Jul 2019 16:14:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7D65222ADC; Wed, 31 Jul 2019 16:14:00 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 21A5F22B39 for ; Wed, 31 Jul 2019 16:14:00 +0000 (UTC) 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=OiLl4aGyCYxIFrbHvyEdzO941HK9UR7kqRmmRXejF6s=; b=Spt4mHVjqOTHM9 VFd9p6VWuRgfb3v+YcZM3lHokpIAUujMHLyeDAMElYyQFaUHYqJrWlML1/Y0WKGdE9HAz8LOLLSFw 9+GMLCpjy7zIeITHFeDvbJQigZZsher4mTYvAPv5ism1OZJMqU5UnsXug/YDeuMfJsqgGaeSn1XdF bOaph9PcFtaOIkelP1gNsv/2v4GpCKzOzd6jdkN9rQrvlb3KlTgmzygRtdORAmRrJgb0dZoKOk84d fbif4dRF551IGocrPEJKjpY4QlsEtzE5/mL7Fx7NBvfRK8/NFTBgANvaQaO1OrMOCsHcY0LHEB7li rgINoDdFVSCZ1Bfp2gEQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsrEl-0000qv-80; Wed, 31 Jul 2019 16:13:59 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsrE2-0008BZ-N1 for linux-arm-kernel@lists.infradead.org; Wed, 31 Jul 2019 16:13:16 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6F8B61570; Wed, 31 Jul 2019 09:13:14 -0700 (PDT) Received: from e119886-lin.cambridge.arm.com (unknown [10.37.6.20]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EF5393F71F; Wed, 31 Jul 2019 09:13:12 -0700 (PDT) From: Andrew Murray To: Catalin Marinas , Will Deacon , Peter Zijlstra , Ard.Biesheuvel@arm.com Subject: [PATCH v2 5/5] arm64: atomics: remove atomic_ll_sc compilation unit Date: Wed, 31 Jul 2019 17:12:56 +0100 Message-Id: <20190731161256.22210-6-andrew.murray@arm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190731161256.22210-1-andrew.murray@arm.com> References: <20190731161256.22210-1-andrew.murray@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190731_091314_809362_1CEEEEB9 X-CRM114-Status: UNSURE ( 9.91 ) X-CRM114-Notice: Please train this message. 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: Mark Rutland , Boqun Feng , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP We no longer fall back to out-of-line atomics on systems with CONFIG_ARM64_LSE_ATOMICS where ARM64_HAS_LSE_ATOMICS is not set. Let's remove the now unused compilation unit which provided these symbols. Signed-off-by: Andrew Murray --- arch/arm64/lib/Makefile | 19 ------------------- arch/arm64/lib/atomic_ll_sc.c | 3 --- 2 files changed, 22 deletions(-) delete mode 100644 arch/arm64/lib/atomic_ll_sc.c diff --git a/arch/arm64/lib/Makefile b/arch/arm64/lib/Makefile index 33c2a4abda04..f10809ef1690 100644 --- a/arch/arm64/lib/Makefile +++ b/arch/arm64/lib/Makefile @@ -11,25 +11,6 @@ CFLAGS_REMOVE_xor-neon.o += -mgeneral-regs-only CFLAGS_xor-neon.o += -ffreestanding endif -# Tell the compiler to treat all general purpose registers (with the -# exception of the IP registers, which are already handled by the caller -# in case of a PLT) as callee-saved, which allows for efficient runtime -# patching of the bl instruction in the caller with an atomic instruction -# when supported by the CPU. Result and argument registers are handled -# correctly, based on the function prototype. -lib-$(CONFIG_ARM64_LSE_ATOMICS) += atomic_ll_sc.o -CFLAGS_atomic_ll_sc.o := -ffixed-x1 -ffixed-x2 \ - -ffixed-x3 -ffixed-x4 -ffixed-x5 -ffixed-x6 \ - -ffixed-x7 -fcall-saved-x8 -fcall-saved-x9 \ - -fcall-saved-x10 -fcall-saved-x11 -fcall-saved-x12 \ - -fcall-saved-x13 -fcall-saved-x14 -fcall-saved-x15 \ - -fcall-saved-x18 -fomit-frame-pointer -CFLAGS_REMOVE_atomic_ll_sc.o := $(CC_FLAGS_FTRACE) -GCOV_PROFILE_atomic_ll_sc.o := n -KASAN_SANITIZE_atomic_ll_sc.o := n -KCOV_INSTRUMENT_atomic_ll_sc.o := n -UBSAN_SANITIZE_atomic_ll_sc.o := n - lib-$(CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE) += uaccess_flushcache.o obj-$(CONFIG_CRC32) += crc32.o diff --git a/arch/arm64/lib/atomic_ll_sc.c b/arch/arm64/lib/atomic_ll_sc.c deleted file mode 100644 index b0c538b0da28..000000000000 --- a/arch/arm64/lib/atomic_ll_sc.c +++ /dev/null @@ -1,3 +0,0 @@ -#include -#define __ARM64_IN_ATOMIC_IMPL -#include