Kconfigs: Add comments and a dependency.
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@ -213,6 +213,11 @@ config ARCH_HAVE_RTC_SUBSECONDS
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config ARCH_GLOBAL_IRQDISABLE
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bool
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default n
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---help---
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Indicates that disabling interrupts on one CPU will either (1) disable
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all interrupts globally on all CPUs, or (2) will disable interprocessor
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interrupts as well so that no context switches can occur on the CPU
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that disabled "local" interrupts.
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config ARCH_USE_MMU
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bool "Enable MMU"
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@ -252,6 +252,7 @@ config SPINLOCK
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config SPINLOCK_IRQ
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bool "Support Spinlocks with IRQ control"
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default n
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depends on ARCH_GLOBAL_IRQDISABLE
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---help---
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Enables suppport for spinlocks with IRQ control. This feature can be
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used to protect data in SMP mode.
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