[Intel-gfx] [PATCH v2 4/5] drm/i915/guc: Add GuC CT specific debug print wrappers

[Jani Nikula]

On Fri, 06 Jan 2023, John Harrison <john.c.harrison at intel.com> wrote:
> On 12/6/2022 03:06, Tvrtko Ursulin wrote:
>> On 05/12/2022 18:44, Michal Wajdeczko wrote:
>>> On 05.12.2022 14:16, Tvrtko Ursulin wrote:
>>>> On 02/12/2022 20:14, John Harrison wrote:
>>>> [snip]
>>>>
>>>>> Random meaningless (to me) message that is apparently a display thing:
>>>>> drm_dbg_kms(&dev_priv->drm, "disabling %s\n", pll->info->name);
>>>>> i915 0000:00:02.0: [drm:intel_disable_shared_dpll [i915]] disabling
>>>>> PORT PLL B
>>>>
>>>> Plan is to not touch outside gt/.
> For some unexplicable reason that means it is almost impossible to see 
> the actual problems in most CI dmesg logs because they are swamped with 
> irrelevant display messages that cannot be filtered out. For example, I 
> recently manually grep'd out all the display spam from a bug report log. 
> The dmesg file went from 12MB to 700KB. That is a significant problem 
> that makes bug triage way harder than it needs to be.

You can adjust drm.debug module parameter to get rid of almost all
display debugs. They're logged using the appropriate debug categories.


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center