From patchwork Mon Aug 4 02:58:00 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haojian Zhuang X-Patchwork-Id: 4666711 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id ABF889F38D for ; Mon, 4 Aug 2014 03:03:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED57C2025B for ; Mon, 4 Aug 2014 03:03:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9E18320259 for ; Mon, 4 Aug 2014 03:03:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XE8W3-0007Zb-1Y; Mon, 04 Aug 2014 03:00:51 +0000 Received: from mail-pa0-f48.google.com ([209.85.220.48]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XE8W1-0007WE-47 for linux-arm-kernel@lists.infradead.org; Mon, 04 Aug 2014 03:00:49 +0000 Received: by mail-pa0-f48.google.com with SMTP id et14so9133603pad.35 for ; Sun, 03 Aug 2014 20:00:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=c/xm7t6lJ6nb76NognZZYiT+1xaJlRXQuoJaiCHPFhE=; b=nGJM1+1SbRoqULKdoEzHwSQNrvJPwulCut5oWmb8xiFfGDO2ji6KAwXZ5sVhBGnUG0 PkcAa5GAKgkKzqZouzTlMjzwwcFrBX5FtBSvIceGXfyU76sgE49gO33DwfAk6Fwky+XF HnffHHC5qLJy4/VEQ/7HJcZq+hEWQZscuZpPJO3Tpk1M+vtEJxU/E9ORtCOYP6a7YcSy UhqQDpdb106iRXevCXNrVxxObpBdNA02BLFUxmT2zmoQxpuY48soVWzhrVlNPeYbS3Ix g9p09tmeY0fnt9DfScymhO5KtrK9oQJSUBh+x6wGCqY4TA7cdpaH1l58WOjGommCH29l hUGw== X-Gm-Message-State: ALoCoQnFIDhjBH8WU8qNOpaw4f+0LR4aAPtXPp/phUC7W3ZCqfuRYxD4SboMB5zvkNqJAVoypq8+ X-Received: by 10.66.253.170 with SMTP id ab10mr21276146pad.53.1407121227717; Sun, 03 Aug 2014 20:00:27 -0700 (PDT) Received: from localhost.localdomain ([98.126.25.141]) by mx.google.com with ESMTPSA id jb5sm15729523pbd.73.2014.08.03.20.00.18 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 03 Aug 2014 20:00:27 -0700 (PDT) From: Haojian Zhuang To: arnd@arndb.de, olof@lixom.net, marc.zyngier@arm.com, jason@lakedaemon.net, linux-arm-kernel@lists.infradead.org, nicolas.pitre@linaro.org, khilman@linaro.org, xuwei5@hisilicon.com, arm@kernel.org Subject: [PATCH v16 1/9] ARM: mcpm: support 4 clusters Date: Mon, 4 Aug 2014 10:58:00 +0800 Message-Id: <1407121088-4151-2-git-send-email-haojian.zhuang@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1407121088-4151-1-git-send-email-haojian.zhuang@linaro.org> References: <1407121088-4151-1-git-send-email-haojian.zhuang@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140803_200049_181426_619FFFE5 X-CRM114-Status: UNSURE ( 9.65 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.4 (-) Cc: Haojian Zhuang X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add the CONFIG_MCPM_QUAD_CLUSTER configuration to enlarge cluster number from 2 to 4. Signed-off-by: Haojian Zhuang Reviewed-by: Nicolas Pitre --- arch/arm/Kconfig | 9 +++++++++ arch/arm/include/asm/mcpm.h | 5 +++++ 2 files changed, 14 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 87b63fd..10cc6ec 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1490,6 +1490,15 @@ config MCPM for (multi-)cluster based systems, such as big.LITTLE based systems. +config MCPM_QUAD_CLUSTER + bool + depends on MCPM + help + To avoid wasting resources unnecessarily, MCPM only supports up + to 2 clusters by default. + Platforms with 3 or 4 clusters that use MCPM must select this + option to allow the additional clusters to be managed. + config BIG_LITTLE bool "big.LITTLE support (Experimental)" depends on CPU_V7 && SMP diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index d9702eb..a4fbacc 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -20,7 +20,12 @@ * to consider dynamic allocation. */ #define MAX_CPUS_PER_CLUSTER 4 + +#ifdef CONFIG_MCPM_QUAD_CLUSTER +#define MAX_NR_CLUSTERS 4 +#else #define MAX_NR_CLUSTERS 2 +#endif #ifndef __ASSEMBLY__