Re: [PATCH v2 1/2] drm: Introduce DRM_DEV_* log messages

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On Fri, Aug 12, 2016 at 3:44 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Aug 12, 2016 at 09:26:32PM +0200, Lukas Wunner wrote:
>> On Fri, Aug 12, 2016 at 07:39:38PM +0100, Chris Wilson wrote:
>> > On Fri, Aug 12, 2016 at 01:30:00PM -0400, Sean Paul wrote:
>> > > This patch consolidates all the various log functions/macros into
>> > > one uber function, drm_log. It also introduces some new DRM_DEV_*
>> > > variants that print the device name to delineate multiple devices
>> > > of the same type.
>> > >
>> > > Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
>> > > ---
>> > >
>> > > Changes in v2:
>> > >   - Use dev_printk for the dev variant (Chris Wilson)
>> > >
>> > >
>> > >  drivers/gpu/drm/drm_drv.c |  31 +++++------
>> > >  include/drm/drmP.h        | 133 ++++++++++++++++++++++++----------------------
>> > >  2 files changed, 82 insertions(+), 82 deletions(-)
>> > >
>> > > diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
>> > > index 57ce973..edd3291 100644
>> > > --- a/drivers/gpu/drm/drm_drv.c
>> > > +++ b/drivers/gpu/drm/drm_drv.c
>> > > @@ -63,37 +63,30 @@ static struct idr drm_minors_idr;
>> > >
>> > >  static struct dentry *drm_debugfs_root;
>> > >
>> > > -void drm_err(const char *format, ...)
>> > > +void drm_log(const struct device *dev, const char *level, unsigned int category,
>> >
>> > I would have called this drm_printk() to match the function it wraps.
>>
>> lxr.free-electrons.com says dev_info() is used in 2056 files whereas
>> dev_printk() is only used in 90 files. And dev_log() doesn't exist.
>> So drm_info() would arguably make the most sense.
>
> dev_printk is the underlying mechanism, dev_log() is a curry function
> calling dev_printk with some parameters already provided.
>
> Speaking of which, if we did separate drm_printk() and drm_dev_printk(),
> if drm_printk just called drm_dev_printk(NULL, ...) we would barely grow
> the build.

Thanks for the suggestion, will revise.

Sean

> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre
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