Re: [PATCH 0/8] dynamic debug

[Greg KH <greg@kroah.com>]

On Mon, Jun 16, 2008 at 11:26:12AM +0900, Takashi Nishiie wrote:
> Hi.
> 
> Jason Baron wrote:
> >Each kernel sub-system seems to have its own way of dealing with 
> >debugging statements. Some of these methods include 'dprintk', 
> >'pr_debug', 'dev_debug', 'DEBUGP'. There are also a myriad of 
> >ways of enabling these statements. 
> 
>  I propose to replace 'Pr_debug', 'Dev_debug', and 'DEBUGP' with 
> kernel markers. SystemTap is used for the output of the log.  

That would be a nice goal, but how are you going to handle dynamic
strings?

>  I propose to make it to the function to output only specified 
> kernel markers as a log and the function in a word like LTTng of
> a simple version by using the framework and kernel markers of 
> ftrace if the log is output by using debugfs. 

It might be a nice long term goal, but this patchset is a much simpler
approach for this time, not requiring systemtap or any external tool-set
to be installed and set up properly.

thanks,

greg k-h