[Intel-gfx] [PATCH 1/2] drm/i915/gt: Add GT oriented dmesg output

[Ceraolo Spurio, Daniele]

On 11/4/2022 10:25 AM, John.C.Harrison at Intel.com wrote:
> From: John Harrison <John.C.Harrison at Intel.com>
>
> When trying to analyse bug reports from CI, customers, etc. it can be
> difficult to work out exactly what is happening on which GT in a
> multi-GT system. So add GT oriented debug/error message wrappers. If
> used instead of the drm_ equivalents, you get the same output but with
> a GT# prefix on it.
>
> Signed-off-by: John Harrison <John.C.Harrison at Intel.com>

The only downside to this is that we'll print "GT0: " even on single-GT 
devices. We could introduce a gt->info.name and print that, so we could 
have it different per-platform, but IMO it's not worth the effort.

Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>

I think it might be worth getting an ack from one of the maintainers to 
make sure we're all aligned on transitioning to these new logging macro 
for gt code.

Daniele

> ---
>   drivers/gpu/drm/i915/gt/intel_gt.h | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h
> index e0365d5562484..1e016fb0117a4 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gt.h
> @@ -13,6 +13,21 @@
>   struct drm_i915_private;
>   struct drm_printer;
>   
> +#define GT_ERR(_gt, _fmt, ...) \
> +	drm_err(&(_gt)->i915->drm, "GT%u: " _fmt, (_gt)->info.id, ##__VA_ARGS__)
> +
> +#define GT_WARN(_gt, _fmt, ...) \
> +	drm_warn(&(_gt)->i915->drm, "GT%u: " _fmt, (_gt)->info.id, ##__VA_ARGS__)
> +
> +#define GT_NOTICE(_gt, _fmt, ...) \
> +	drm_notice(&(_gt)->i915->drm, "GT%u: " _fmt, (_gt)->info.id, ##__VA_ARGS__)
> +
> +#define GT_INFO(_gt, _fmt, ...) \
> +	drm_info(&(_gt)->i915->drm, "GT%u: " _fmt, (_gt)->info.id, ##__VA_ARGS__)
> +
> +#define GT_DBG(_gt, _fmt, ...) \
> +	drm_dbg(&(_gt)->i915->drm, "GT%u: " _fmt, (_gt)->info.id, ##__VA_ARGS__)
> +
>   #define GT_TRACE(gt, fmt, ...) do {					\
>   	const struct intel_gt *gt__ __maybe_unused = (gt);		\
>   	GEM_TRACE("%s " fmt, dev_name(gt__->i915->drm.dev),		\