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SubjectRe: [Intel-gfx] [PATCH 1/5] drm/i915: convert to using the drm_dbg_kms() macro.
Date
Quoting Jani Nikula (2020-01-08 09:40:40)
> On Wed, 08 Jan 2020, Joonas Lahtinen <joonas.lahtinen@linux.intel.com> wrote:
> > Quoting Wambui Karuga (2020-01-07 17:13:29)
> >> Convert the use of the DRM_DEBUG_KMS() logging macro to the new struct
> >> drm_device based drm_dbg_kms() logging macro in i915/intel_pch.c.
> >>
> >> Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
> >> ---
> >> drivers/gpu/drm/i915/intel_pch.c | 46 +++++++++++++++++---------------
> >> 1 file changed, 24 insertions(+), 22 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/i915/intel_pch.c b/drivers/gpu/drm/i915/intel_pch.c
> >> index 43b68b5fc562..4ed60e1f01db 100644
> >> --- a/drivers/gpu/drm/i915/intel_pch.c
> >> +++ b/drivers/gpu/drm/i915/intel_pch.c
> >> @@ -12,90 +12,91 @@ intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
> >> {
> >> switch (id) {
> >> case INTEL_PCH_IBX_DEVICE_ID_TYPE:
> >> - DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
> >> + drm_dbg_kms(&dev_priv->drm, "Found Ibex Peak PCH\n");
> >
> > Did we at some point consider i915_dbg_kms alias? That would just take
> > dev_priv (or i915, as it's called in newer code). It would shorten many
> > of the statements.
> >
> > i915_dbg_kms(dev_priv, ...) or i915_dbg_kms(i915, ...)
>
> I'd rather use the common drm logging macros. I thought about adding
> i915 specific ones only if the drm device specific logging macros
> weren't going to be merged.

Why do they even exist? Why isn't it enough to do
#define drm_info(drm, fmt, ...) dev_info(&(drm)->dev, fmt, ##__VA_ARGS) ?
#define i915_info(i915, fmt, ...) drm_info(&(i915)->drm, fmt, ##__VA_ARGS)

The lea for &i915->drm.dev is the same as the mov, so we shave off an
unnecessary wrapper.
-Chris

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