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SubjectRe: [PATCH] drm/i915: convert to new logging macros based on struct intel_engine_cs.


On Mon, 13 Jan 2020, Chris Wilson wrote:

> Quoting Wambui Karuga (2020-01-13 11:10:25)
>> fn(...) {
>> ...
>> struct intel_engine_cs *E = ...;
>> +struct drm_i915_private *dev_priv = E->i915;
>
> No new dev_priv.
>
> There should be no reason for drm_dbg here, as the rest of the debug is
> behind ENGINE_TRACE and so the vestigial debug should be moved over, or
> deleted as not being useful.
>
> The error messages look unhelpful.
Hey Chris, could you please elaborate on the debugs that should be
removed? These patches are for just converting the current debug
instances, so removing them might need separate patches.

Thanks,
-wambui
>
>> if ((batch_end - cmd) < length) {
>> - DRM_DEBUG("CMD: Command length exceeds batch length: 0x%08X length=%u batchlen=%td\n",
>> - *cmd,
>> - length,
>> - batch_end - cmd);
>> + drm_dbg(&dev_priv->drm,
>> + "CMD: Command length exceeds batch length: 0x%08X length=%u batchlen=%td\n",
>
> No. This is not driver debug. If anything this should be pr_debug, or
> some over user centric channel.
> -Chris
>

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