CONFIG_MIPS_UNCACHED: Run uncached

General informations

The Linux kernel configuration item CONFIG_MIPS_UNCACHED has multiple definitions:

Run uncached found in arch/mips/Kconfig.debug

The configuration item CONFIG_MIPS_UNCACHED:

• prompt: Run uncached
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && ! CONFIG_SMP && ! CONFIG_SGI_IP27
• defined in arch/mips/Kconfig.debug
• found in Linux kernels: 2.6.9–2.6.25

Help text

If you say Y here there kernel will disable all CPU caches. This will reduce the system's performance dramatically but can help finding otherwise hard to track bugs. It can also useful if you're doing hardware debugging with a logic analyzer and need to see all traffic on the bus.

Run uncached found in arch/mips/Kconfig

The configuration item CONFIG_MIPS_UNCACHED:

• prompt: Run uncached
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && ! CONFIG_SMP && ! CONFIG_SGI_IP27
• defined in arch/mips/Kconfig
• found in Linux kernels: 2.5.45–2.5.73, 2.6.0–2.6.8

Help text

If you say Y here there kernel will disable all CPU caches. This will reduce the system's performance dramatically but can help finding otherwise hard to track bugs. It can also useful if you're doing hardware debugging with a logic analyzer and need to see all traffic on the bus.

Run uncached found in arch/mips/Kconfig-shared

The configuration item CONFIG_MIPS_UNCACHED:

• prompt: Run uncached
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && ! CONFIG_SMP && ! CONFIG_SGI_IP27
• defined in arch/mips/Kconfig-shared
• found in Linux kernels: 2.5.74–2.5.75

Help text

If you say Y here there kernel will disable all CPU caches. This will reduce the system's performance dramatically but can help finding otherwise hard to track bugs. It can also useful if you're doing hardware debugging with a logic analyzer and need to see all traffic on the bus.

Run uncached found in arch/mips64/Kconfig

The configuration item CONFIG_MIPS_UNCACHED:

• prompt: Run uncached
• type: bool
• depends on: ! CONFIG_SMP
• defined in arch/mips64/Kconfig
• found in Linux kernels: 2.5.45–2.5.73

Help text

If you say Y here there kernel will disable all CPU caches. This will reduce the system's performance dramatically but can help finding otherwise hard to track bugs. It can also useful if you're doing hardware debugging with a logic analyzer and need to see all traffic on the bus.

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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