linux-kernel - Re: [PATCH 00/05] Linux Kernel Markers

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Date:	Thu, 15 Feb 2007 15:14:55 -0800
From:	Vara Prasad <prasadav@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	"Frank Ch. Eigler" <fche@...hat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, systemtap@...rces.redhat.com,
	ltt-dev@...fik.org
Subject: Re: [PATCH 00/05] Linux Kernel Markers - kernel 2.6.20

Andrew Morton wrote:

>On 15 Feb 2007 10:28:57 -0500
>fche@...hat.com (Frank Ch. Eigler) wrote:
>
>  
>
>>akpm wrote:
>>
>>    
>>
>>>[...]  And what can I do with these markers?  And once I've done it,
>>>are there any userspace applications I can use to get the data out
>>>in human-usable form?  [...]
>>>      
>>>
>>The LTTng user-space programs use it today.  Systemtap used to support
>>the earlier marker prototype and will be rapidly ported over to this
>>new API upon acceptance.
>>
>>    
>>
>
>That's good.
>
>It would be beneficial if some people from those projects could spare the
>cycles to carefully review and runtime test this code.
>  
>

Sure, as soon as SystemTap translator supports this new marker mechanism 
we will give it a spin and report results.

>Also, I'm not 100% clear on where we ended up with the huge
>static-vs-dynamic flamewar.  Did everyone end up happy?  Is this patchset a
>reasonable compromise?  Or do we need a rematch?
>  
>
 From my view this is a good compromise. We all realized in that long 
discussion thread that we need a way to mark the code in the middle of 
functions that can later be activated dynamically. Mathieu's current 
implementation meets that goal. I will be happy to see this in.

Thanks,
Vara Prasad


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