Re: [PATCH] lockup_detector: Make DETECT_HUNT_TASK default depend on LOCKUP_DETECTOR

[Li Zefan <lizf@cn.fujitsu.com>]

(Just came back from vacation)

>> Maybe a better change would be to make it more generally available - right now 
>> it's:
>>
>>  config LOCKUP_DETECTOR
>>          bool "Detect Hard and Soft Lockups"
>>          depends on DEBUG_KERNEL && !S390
>>
>> which means that it cannot be enabled when DEBUG_KERNEL is off.
>>
>> So i think we should:
>>
>>  - Remove the s390 hack and add an ARCH_HAS_LOCKUP_DETECTOR flag
> 
> If we do this, we'll need to add this config on every archs but s390.
> We should better have ARCH_WANT_NO_LOCKUP_DETECTOR. I know that
> "negative" meaning configs suck, but otherwise we would lose this
> support on many archs.
> 
> Why s390 doesn't want the softlockup detector to begin with?
> 
>>  - Remove the DEBUG_KERNEL dependency
> 
> Yeah.
> 

Seems we haven't come to an agreement yet? I don't know much about the
lockup detector code, so please take care of this. :)