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authorDave Martin <dave.martin@linaro.org>2011-12-07 15:38:04 +0000
committerDave Martin <dave.martin@linaro.org>2011-12-19 13:47:39 +0000
commit3b55658aefbf82646a246f3c8a14b9b8a24198a9 (patch)
tree9d878552336a55c8eff7745e43cc6e5108cf6dce /arch/arm/Kconfig
parentce5ea9f3767e8589521319cae2eb6e05c52bd056 (diff)
ARM: SMP: Refactor Kconfig to be more maintainable
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 <dave.martin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> (for nomadik, ux500) Acked-by: Tony Lindgren <tony@atomide.com> (for omap) Acked-by: Kukjin Kim <kgene.kim@samsung.com> (for exynos) Acked-by: Sascha Hauer <s.hauer@pengutronix.de> (for imx) Acked-by: Olof Johansson <olof@lixom.net> (for tegra)
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig18
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 16a4b9e689be..eca82f9a717a 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 +1434,20 @@ 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.
+
+ The only effect of this option is to make the SMP-related
+ options available to the user for configuration.
+
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