On Thu, 2018-12-06 at 15:41 +0100, Michel Dänzer wrote:
> On 2018-12-06 1:23 p.m., Joe Perches wrote:
> > On Thu, 2018-12-06 at 12:52 +0100, Michel Dänzer wrote:
> > > In contrast to the 2b case, the pr_debug output isn't visible by default
> > > with 1b, so the latter doesn't fit "always produce output" either.
> >
> > I think you are mistaken here.
>
> Still puzzled as to what you're hoping to achieve with that kind of
> language. None of the confusion about this patch has been on my part. :)
Doubtful.
> > Adding #define DEBUG as Chris did enables pr_debug output
> > and is your 1b.
> >
> > Perhaps your default console logging level is set to a
> > non-default value.
>
> I have CONFIG_DYNAMIC_DEBUG enabled in my kernels. The problem addressed
> by this patch is that messages from drm_debug_printer are visible by
> default (case 2b), whereas they shouldn't be (case 2a, like 1b).
The default for config_dynamic_debug when DEBUG is defined is
to output the message equivalent to when DEBUG is defined and
config_dynamic_debug is not.
That's a good thing and has been the general default since 2011.
You want to override that, I suppose that's OK but it's
definitely not a _fix_ as you have written.
It's just a change in behavior.
You added a "Fixes:" line. I believe that wrong.
A long time ago, at my suggestion:
commit b558c96ffa53f4b3dd52b774e4fb7a52982ab52b
Author: Jim Cromie <jim.cromie@xxxxxxxxx>
Date: Mon Dec 19 17:11:18 2011 -0500
dynamic_debug: make dynamic-debug supersede DEBUG ccflag
If CONFIG_DYNAMIC_DEBUG is defined, honor it over DEBUG, so that
pr_debug()s are controllable, instead of always-on. When DEBUG is
also defined, change _DPRINTK_FLAGS_DEFAULT to enable printing by
default.
cheers, Joe
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