From patchwork Fri Dec 11 17:45:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Ivanov X-Patchwork-Id: 1415174 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=2001:8b0:10b:1231::1; helo=merlin.infradead.org; envelope-from=linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=cambridgegreys.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=merlin.20170209 header.b=bOzDgatx; dkim-atps=neutral Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) (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 4Csys03c5cz9sSf for ; Sat, 12 Dec 2020 04:46:44 +1100 (AEDT) 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=+QTr9jxsTp9gnAGxQprozWTK/q+g3hiZNFTK5RncR+U=; b=bOzDgatxUSazs9c67t/JxMsgi QAHgCaV2K0wacYHkGzad6PSfB87/dP9r+/5CJun/Vk5knjXxIZ2tDy3jaZ4UdtHJc7+6LeCXUwi5l TUvfIEghOIDwm+RmHj4CGtlDsJx8HGvaFfFB8yeJ/7xTfPevLsps+coU3L3mlNxu7PbRumE80Imfj MODpdnwxqRj1abfQeSBYkh3Yk9w3oEXVji97iViduxtWDoCoMaDCFeADYf9yc6jFEI6C2b58VG/BJ UtgEVoVn4n26u3uzLgmfzmLFmYJqmfa0trzO/SpFf+P9Umq0N3/kS81eKXFsql52Vehls/9CAYYJp XEDHppcRw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1knmUy-0008Ky-SP; Fri, 11 Dec 2020 17:46:32 +0000 Received: from ivanoab7.miniserver.com ([37.128.132.42] helo=www.kot-begemot.co.uk) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1knmUu-0008JG-MF for linux-um@lists.infradead.org; Fri, 11 Dec 2020 17:46:29 +0000 Received: from tun252.jain.kot-begemot.co.uk ([192.168.18.6] helo=jain.kot-begemot.co.uk) by www.kot-begemot.co.uk with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1knmUt-00020M-VN; Fri, 11 Dec 2020 17:46:28 +0000 Received: from jain.kot-begemot.co.uk ([192.168.3.3]) by jain.kot-begemot.co.uk with esmtp (Exim 4.92) (envelope-from ) id 1knmUr-0006zn-BS; Fri, 11 Dec 2020 17:46:27 +0000 From: anton.ivanov@cambridgegreys.com To: linux-um@lists.infradead.org Subject: [PATCH v4 7/7] um: borrow bitops from the x86 tree Date: Fri, 11 Dec 2020 17:45:59 +0000 Message-Id: <20201211174559.26010-8-anton.ivanov@cambridgegreys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201211174559.26010-1-anton.ivanov@cambridgegreys.com> References: <20201211174559.26010-1-anton.ivanov@cambridgegreys.com> MIME-Version: 1.0 X-Spam-Score: -1.0 X-Spam-Score: -1.0 X-Clacks-Overhead: GNU Terry Pratchett X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201211_124628_822882_CFC47A2F X-CRM114-Status: GOOD ( 11.41 ) X-Spam-Score: 0.4 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (0.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_NONE SPF: sender does not publish an SPF Record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.4 KHOP_HELO_FCRDNS Relay HELO differs from its IP's reverse DNS X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard@nod.at, Anton Ivanov Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Anton Ivanov Using x86 bitops instead of the asm-generic allows to squeeze a couple of percents improvement on fs IO in UML. It should improve other areas as well. Signed-off-by: Anton Ivanov --- arch/um/include/asm/bitops-x86.h | 1 + arch/um/include/asm/bitops.h | 7 +++++++ 2 files changed, 8 insertions(+) create mode 120000 arch/um/include/asm/bitops-x86.h create mode 100644 arch/um/include/asm/bitops.h diff --git a/arch/um/include/asm/bitops-x86.h b/arch/um/include/asm/bitops-x86.h new file mode 120000 index 000000000000..15a96ff554b2 --- /dev/null +++ b/arch/um/include/asm/bitops-x86.h @@ -0,0 +1 @@ +../../../x86/include/asm/bitops.h \ No newline at end of file diff --git a/arch/um/include/asm/bitops.h b/arch/um/include/asm/bitops.h new file mode 100644 index 000000000000..a0cd978c6aaa --- /dev/null +++ b/arch/um/include/asm/bitops.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_UM_BITOPS_H +#define _ASM_UM_BITOPS_H + +#include + +#endif