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SubjectRe: [PATCH 0/8] dynamic debug
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


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