[PATCH 0/4] drm/amd/powerplay: introduce the cgs print helpers

[Huang Rui]

On Thu, Dec 22, 2016 at 06:52:41PM +0800, Huang Rui wrote:
> On Thu, Dec 08, 2016 at 09:04:13PM +0800, Grazvydas Ignotas wrote:
> > On Thu, Dec 8, 2016 at 11:50 AM, Huang Rui <ray.huang at amd.com> wrote:
> > > On Thu, Dec 08, 2016 at 05:27:30PM +0800, Christian König wrote:
> > >> Am 08.12.2016 um 10:02 schrieb Huang Rui:
> > >> > On Thu, Dec 08, 2016 at 04:41:04PM +0800, Koenig, Christian wrote:
> > >
> > >> Using the dev_* prints in the powerplay code is fine, but don't use the
> > >> CGS or any other abstraction layer for them.
> > >>
> > >
> > > Powerplay is quite independent component without amdgpu object, it is
> > > hard to use dev_* prints without any abstraction layer.
> > 
> > Maybe you could use dev_set_name() with something powerplay related on
> > relevant devices and then dev_* will print what you want?
> > 
> > Alternatively you could do
> > 
> > #define pr_fmt(fmt) "[powerplay] " fmt
> > 
> > before #include <linux/...> and then all pr_* functions will prefix
> > their messages.
> > 
> 
> Hi Grazvydas,
> 
> I tried to put that macro before all #include <linux/...>, but complier always get a redefined warnning.
> 
>   CC [M]  /home/ray/gpu/BUILD/x86_64/linux/drivers/gpu/drm/amd/amdgpu//../powerplay/amd_powerplay.o
> /home/ray/gpu/BUILD/x86_64/linux/drivers/gpu/drm/amd/amdgpu//../powerplay/amd_powerplay.c:24:0: warning: "pr_fmt" redefined
>  #define pr_fmt(fmt) "[powerplay] " fmt
>  ^
> In file included from include/linux/kernel.h:13:0,
>                  from include/linux/list.h:8,
>                  from include/linux/agp_backend.h:33,
>                  from include/drm/drmP.h:35,
>                  from <command-line>:0:
> include/linux/printk.h:248:0: note: this is the location of the previous definition
>  #define pr_fmt(fmt) fmt
>  ^
> 

OK, I already find a way to avoid this warning, thanks.

Merry Christmas,
Rui