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Message-ID: <Y7bGiLRanR3Y7tXM@phenom.ffwll.local>
Date: Thu, 5 Jan 2023 13:46:00 +0100
From: Daniel Vetter <daniel@...ll.ch>
To: Jim Cromie <jim.cromie@...il.com>
Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
amd-gfx@...ts.freedesktop.org, intel-gvt-dev@...ts.freedesktop.org,
intel-gfx@...ts.freedesktop.org, jani.nikula@...el.com,
ville.syrjala@...ux.intel.com, daniel.vetter@...ll.ch,
seanpaul@...omium.org, robdclark@...il.com
Subject: Re: [PATCH 2/2] drm_print: fix stale macro-name in comment
On Mon, Dec 05, 2022 at 09:10:05AM -0700, Jim Cromie wrote:
> Cited commit uses stale macro name, fix this, and explain better.
>
> When DRM_USE_DYNAMIC_DEBUG=y, DYNDBG_CLASSMAP_DEFINE() maps DRM_UT_*
> onto BITs in drm.debug. This still uses enum drm_debug_category, but
> it is somewhat indirect, with the ordered set of DRM_UT_* enum-vals.
> This requires that the macro args: DRM_UT_* list must be kept in sync
> and in order.
>
> Fixes: f158936b60a7 ("drm: POC drm on dyndbg - use in core, 2 helpers, 3 drivers.")
> Signed-off-by: Jim Cromie <jim.cromie@...il.com>
What's the status of this series?
Greg, you landed the original entire pile that wasn't quite ready yet? Or
should I apply these two?
-Daniel
> ---
> . emphasize ABI non-change despite enum val change - Jani Nikula
> . reorder to back of patchset to follow API name changes.
> ---
> include/drm/drm_print.h | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
> index a44fb7ef257f..e4c0c7e6d49d 100644
> --- a/include/drm/drm_print.h
> +++ b/include/drm/drm_print.h
> @@ -276,7 +276,10 @@ static inline struct drm_printer drm_err_printer(const char *prefix)
> *
> */
> enum drm_debug_category {
> - /* These names must match those in DYNAMIC_DEBUG_CLASSBITS */
> + /*
> + * Keep DYNDBG_CLASSMAP_DEFINE args in sync with changes here,
> + * the enum-values define BIT()s in drm.debug, so are ABI.
> + */
> /**
> * @DRM_UT_CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c,
> * drm_memory.c, ...
> --
> 2.38.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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