From patchwork Tue Dec 13 17:56:30 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Martin X-Patchwork-Id: 5639 Return-Path: X-Original-To: patchwork@peony.canonical.com Delivered-To: patchwork@peony.canonical.com Received: from fiordland.canonical.com (fiordland.canonical.com [91.189.94.145]) by peony.canonical.com (Postfix) with ESMTP id 0473823E0C for ; Tue, 13 Dec 2011 17:56:45 +0000 (UTC) Received: from mail-ey0-f180.google.com (mail-ey0-f180.google.com [209.85.215.180]) by fiordland.canonical.com (Postfix) with ESMTP id EE492A1829B for ; Tue, 13 Dec 2011 17:56:44 +0000 (UTC) Received: by mail-ey0-f180.google.com with SMTP id 13so1589962eaa.11 for ; Tue, 13 Dec 2011 09:56:44 -0800 (PST) Received: by 10.204.133.213 with SMTP id g21mr10052818bkt.126.1323799004752; Tue, 13 Dec 2011 09:56:44 -0800 (PST) X-Forwarded-To: linaro-patchwork@canonical.com X-Forwarded-For: patch@linaro.org linaro-patchwork@canonical.com Delivered-To: patches@linaro.org Received: by 10.205.129.2 with SMTP id hg2cs88568bkc; Tue, 13 Dec 2011 09:56:44 -0800 (PST) Received: by 10.205.137.144 with SMTP id io16mr13822230bkc.23.1323799003033; Tue, 13 Dec 2011 09:56:43 -0800 (PST) Received: from mail-ee0-f50.google.com (mail-ee0-f50.google.com [74.125.83.50]) by mx.google.com with ESMTPS id a12si1751748een.2.2011.12.13.09.56.42 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 13 Dec 2011 09:56:43 -0800 (PST) Received-SPF: neutral (google.com: 74.125.83.50 is neither permitted nor denied by best guess record for domain of dave.martin@linaro.org) client-ip=74.125.83.50; Authentication-Results: mx.google.com; spf=neutral (google.com: 74.125.83.50 is neither permitted nor denied by best guess record for domain of dave.martin@linaro.org) smtp.mail=dave.martin@linaro.org Received: by eeke53 with SMTP id e53so3781743eek.37 for ; Tue, 13 Dec 2011 09:56:42 -0800 (PST) Received: by 10.180.104.41 with SMTP id gb9mr35421513wib.9.1323799002672; Tue, 13 Dec 2011 09:56:42 -0800 (PST) Received: from e103592.peterhouse.linaro.org (fw-lnat.cambridge.arm.com. [217.140.96.63]) by mx.google.com with ESMTPS id dd4sm30779779wib.1.2011.12.13.09.56.41 (version=SSLv3 cipher=OTHER); Tue, 13 Dec 2011 09:56:42 -0800 (PST) From: Dave Martin To: linux-arm-kernel@lists.infradead.org Cc: patches@linaro.org Subject: [PATCH v4 2/5] ARM: SMP: Refactor Kconfig to be more maintainable Date: Tue, 13 Dec 2011 17:56:30 +0000 Message-Id: <1323798993-8727-3-git-send-email-dave.martin@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1323798993-8727-1-git-send-email-dave.martin@linaro.org> References: <1323798993-8727-1-git-send-email-dave.martin@linaro.org> Making SMP depend on (huge list of MACH_ and ARCH_ configs) is bothersome to maintain and likely to lead to merge conflicts. This patch moves the knowledge of which platforms are SMP-capable to the individual machines. To enable this, a new HAVE_SMP config option is introduced to allow machines to indicate that they can run in a SMP configuration. Signed-off-by: Dave Martin Acked-by: Linus Walleij Acked-by: Olof Johansson (Tegra parts) --- arch/arm/Kconfig | 15 +++++++++++---- arch/arm/mach-exynos/Kconfig | 1 + arch/arm/mach-imx/Kconfig | 1 + arch/arm/mach-msm/Kconfig | 1 + arch/arm/mach-omap2/Kconfig | 1 + arch/arm/mach-realview/Kconfig | 4 ++++ arch/arm/mach-vexpress/Kconfig | 1 + 7 files changed, 20 insertions(+), 4 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 16a4b9e..d33eb39 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -344,6 +344,7 @@ config ARCH_HIGHBANK select CPU_V7 select GENERIC_CLOCKEVENTS select HAVE_ARM_SCU + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 select USE_OF help @@ -636,6 +637,7 @@ config ARCH_TEGRA select GENERIC_GPIO select HAVE_CLK select HAVE_SCHED_CLOCK + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 select ARCH_HAS_CPUFREQ help @@ -706,6 +708,7 @@ config ARCH_SHMOBILE select HAVE_CLK select CLKDEV_LOOKUP select HAVE_MACH_CLKDEV + select HAVE_SMP select GENERIC_CLOCKEVENTS select MIGHT_HAVE_CACHE_L2X0 select NO_IOPORT @@ -909,6 +912,7 @@ config ARCH_U8500 select CLKDEV_LOOKUP select ARCH_REQUIRE_GPIOLIB select ARCH_HAS_CPUFREQ + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 help Support for ST-Ericsson's Ux500 architecture @@ -1430,14 +1434,17 @@ menu "Kernel Features" source "kernel/time/Kconfig" +config HAVE_SMP + bool + help + This option should be selected by machines which have an SMP- + capable CPU. + config SMP bool "Symmetric Multi-Processing" depends on CPU_V6K || CPU_V7 depends on GENERIC_CLOCKEVENTS - depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \ - MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ - ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \ - ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE || ARCH_HIGHBANK || SOC_IMX6Q + depends on HAVE_SMP depends on MMU select USE_GENERIC_SMP_HELPERS select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index 7f2347b..e1efbca 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -17,6 +17,7 @@ choice config ARCH_EXYNOS4 bool "SAMSUNG EXYNOS4" + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 help Samsung EXYNOS4 SoCs based systems diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 5f7f9c2..29a3d61 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -615,6 +615,7 @@ config SOC_IMX6Q select HAVE_IMX_GPC select HAVE_IMX_MMDC select HAVE_IMX_SRC + select HAVE_SMP select USE_OF help diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig index ebde97f..e6beaff 100644 --- a/arch/arm/mach-msm/Kconfig +++ b/arch/arm/mach-msm/Kconfig @@ -67,6 +67,7 @@ config MSM_SOC_REV_A bool config ARCH_MSM_SCORPIONMP bool + select HAVE_SMP config ARCH_MSM_ARM11 bool diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index c841578..bb1b670 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -43,6 +43,7 @@ config ARCH_OMAP4 depends on ARCH_OMAP2PLUS select CPU_V7 select ARM_GIC + select HAVE_SMP select LOCAL_TIMERS if SMP select MIGHT_HAVE_CACHE_L2X0 select PL310_ERRATA_588369 diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig index 3dd620f..c593be4 100644 --- a/arch/arm/mach-realview/Kconfig +++ b/arch/arm/mach-realview/Kconfig @@ -12,6 +12,7 @@ config REALVIEW_EB_A9MP bool "Support Multicore Cortex-A9 Tile" depends on MACH_REALVIEW_EB select CPU_V7 + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 help Enable support for the Cortex-A9MPCore tile fitted to the @@ -22,6 +23,7 @@ config REALVIEW_EB_ARM11MP depends on MACH_REALVIEW_EB select CPU_V6K select ARCH_HAS_BARRIERS if SMP + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 help Enable support for the ARM11MPCore tile fitted to the Realview(R) @@ -41,6 +43,7 @@ config MACH_REALVIEW_PB11MP select CPU_V6K select ARM_GIC select HAVE_PATA_PLATFORM + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 select ARCH_HAS_BARRIERS if SMP help @@ -82,6 +85,7 @@ config MACH_REALVIEW_PBX bool "Support RealView(R) Platform Baseboard Explore" select ARM_GIC select HAVE_PATA_PLATFORM + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET select ZONE_DMA if SPARSEMEM diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig index a8aefc8..9b3d0fb 100644 --- a/arch/arm/mach-vexpress/Kconfig +++ b/arch/arm/mach-vexpress/Kconfig @@ -8,6 +8,7 @@ config ARCH_VEXPRESS_CA9X4 select ARM_ERRATA_720789 select ARM_ERRATA_751472 select ARM_ERRATA_753970 + select HAVE_SMP select MIGHT_HAVE_CACHE_L2X0 endmenu