Re: [RFC PATCH 16/23] watchdog/hardlockup: Add an HPET-based hardlockup detector

[Randy Dunlap]

Hi,

On 06/12/2018 05:57 PM, Ricardo Neri wrote:
> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index c40c7b7..6e79833 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -828,6 +828,16 @@ config HARDLOCKUP_DETECTOR_PERF
>  	bool
>  	select SOFTLOCKUP_DETECTOR
>  
> +config HARDLOCKUP_DETECTOR_HPET
> +	bool "Use HPET Timer for Hard Lockup Detection"
> +	select SOFTLOCKUP_DETECTOR
> +	select HARDLOCKUP_DETECTOR
> +	depends on HPET_TIMER && HPET
> +	help
> +	  Say y to enable a hardlockup detector that is driven by an High-Precision
> +	  Event Timer. In addition to selecting this option, the command-line
> +	  parameter nmi_watchdog option. See Documentation/admin-guide/kernel-parameters.rst

The "In addition ..." thing is a broken (incomplete) sentence.

> +
>  #
>  # Enables a timestamp based low pass filter to compensate for perf based
>  # hard lockup detection which runs too fast due to turbo modes.


-- 
~Randy