[PATCH v4 REPOST 2/5] ARM: SMP: Refactor Kconfig to be more maintainable
From: Dave Martin <hidden>
Date: 2011-12-14 11:39:38
Also in:
linux-omap, linux-samsung-soc, linux-sh, linux-tegra
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
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 <redacted> --- 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
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1.7.4.1