Re: [RFC PATCH v3 11/21] x86/watchdog/hardlockup: Add an HPET-based hardlockup detector

[Randy Dunlap]

On 5/14/19 7:02 AM, Ricardo Neri wrote:
> diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
> index 15d0fbe27872..376a5db81aec 100644
> --- a/arch/x86/Kconfig.debug
> +++ b/arch/x86/Kconfig.debug
> @@ -169,6 +169,17 @@ config IOMMU_LEAK
>  config HAVE_MMIOTRACE_SUPPORT
>  	def_bool y
>  
> +config X86_HARDLOCKUP_DETECTOR_HPET
> +	bool "Use HPET Timer for Hard Lockup Detection"
> +	select SOFTLOCKUP_DETECTOR
> +	select HARDLOCKUP_DETECTOR
> +	select HARDLOCKUP_DETECTOR_CORE
> +	depends on HPET_TIMER && HPET && X86_64
> +	help
> +	  Say y to enable a hardlockup detector that is driven by an High-

	                                                       by a

> +	  Precision Event Timer. This option is helpful to not use counters
> +	  from the Performance Monitoring Unit to drive the detector.
> +
>  config X86_DECODER_SELFTEST
>  	bool "x86 instruction decoder selftest"
>  	depends on DEBUG_KERNEL && KPROBES


-- 
~Randy