Re: [PATCH v3 1/7] Documentation: dynamic-debug: Add description of level bitmask

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On Wed, 2020-06-10 at 08:31 +0200, Greg Kroah-Hartman wrote:
> On Tue, Jun 09, 2020 at 09:58:07AM -0700, Joe Perches wrote:
> > On Tue, 2020-06-09 at 13:16 +0200, Greg Kroah-Hartman wrote:
> > > What is wrong with the existing control of dynamic
> > > debug messages that you want to add another type of arbitrary grouping
> > > to it? 
> > 
> > There is no existing grouping mechanism.
> 
> info/warn/err/dbg is what I am referring to.
> 
> > Many drivers and some subsystems used an internal one
> > before dynamic debug.
> > 
> > $ git grep "MODULE_PARM.*\bdebug\b"|wc -l
> > 501
> 
> Yes, and it's horrid and needs to be cleaned up, not added to.

Or unified so driver authors have a standardized mechanism
rather than reinventing or doing things differently.

> In the beginning, yes, adding loads of different types of debugging
> options to a driver is needed by the author, but by the time it is added
> to the kernel, all of that should be able to be removed and only a
> single "enable debug" should be all that is needed.

No one does that.





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