Re: [PATCHv11 2.6.36-rc2-tip 10/15] 10: tracing: config option to enable both kprobe-tracer and uprobe-tracer.

[Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>]

(2010/08/27 21:17), Srikar Dronamraju wrote:
>>>
>>> I think we should go with the first one, i.e have a common knob thats
>>> by default unselected.
>>
>> Yeah, I'm OK to have a common knob, but I just don't like to set
>> KPROBE_EVENT unselected by default. I think there is no reason
>> to change default selecting (currently, KPROBE_EVENT=y by default.)
> 
> I understand your concern.
> 
>>
>> So, I think we should have below selecting list;
>> --- Tracers
>> ...
>> [*] Enable dynamic events
>>    [ ] Enable user-space dynamic events (EXPERIMENTAL)
>> ...
>>
>> What would you think about this ? :)
>>
>> Thank you,
> 
> 
> Wouldnt it negate the purpose of common knob?
> Because people would still have go and select UPROBE_EVENTS,

Hmm, I think this just seems an enhancement of dynamic events,
and also you can enable it by default on some point.
I mean, eventually, there will be only "Enable dynamic events"
on the screen.

> I think when Frederic asked for a common knob, he was looking at
> enabling both or disabling both and an option to selectively
> select one of the tracers. 

Yeah, but I'd like to ask Frederic that he expected disabling
KPROBE_EVENT by default too, even though it changes current
default config.

Thank you,