| Message ID | 20240702215804.2201271-31-jim.cromie@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | fix CONFIG_DRM_USE_DYNAMIC_DEBUG=y | expand |
On Tue, Jul 2, 2024 at 5:33 PM Ville Syrjälä <ville.syrjala@linux.intel.com> wrote: > > On Tue, Jul 02, 2024 at 03:57:20PM -0600, Jim Cromie wrote: > > dyndbg's CLASSMAP-v1 api was broken; DECLARE_DYNDBG_CLASSMAP tried to > > do too much. Its replaced by DRM_CLASSMAP_DEFINE, which creates & > > EXPORTs the classmap when CONFIG_DRM_USE_DYNAMIC_DEBUG=y, for direct > > reference by drivers. > > > > The drivers still use DECLARE_DYNDBG_CLASSMAP for now, so they still > > redundantly re-declare the classmap, but we can convert the drivers > > later to DYNDBG_CLASSMAP_USE > > > > Signed-off-by: Jim Cromie <jim.cromie@gmail.com> > > --- > > drivers/gpu/drm/drm_print.c | 25 +++++++++++++------------ > > include/drm/drm_print.h | 8 ++++++++ > > 2 files changed, 21 insertions(+), 12 deletions(-) > > > > diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c > > index 699b7dbffd7b..4a5f2317229b 100644 > > --- a/drivers/gpu/drm/drm_print.c > > +++ b/drivers/gpu/drm/drm_print.c > > @@ -55,18 +55,19 @@ MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug cat > > #if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) > > module_param_named(debug, __drm_debug, ulong, 0600); > > #else > > -/* classnames must match vals of enum drm_debug_category */ > > -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, > > - "DRM_UT_CORE", > > - "DRM_UT_DRIVER", > > - "DRM_UT_KMS", > > - "DRM_UT_PRIME", > > - "DRM_UT_ATOMIC", > > - "DRM_UT_VBL", > > - "DRM_UT_STATE", > > - "DRM_UT_LEASE", > > - "DRM_UT_DP", > > - "DRM_UT_DRMRES"); > > +/* classnames must match value-symbols of enum drm_debug_category */ > > +DRM_CLASSMAP_DEFINE(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, > > + DRM_UT_CORE, > > + "DRM_UT_CORE", > > + "DRM_UT_DRIVER", > > + "DRM_UT_KMS", > > + "DRM_UT_PRIME", > > + "DRM_UT_ATOMIC", > > + "DRM_UT_VBL", > > + "DRM_UT_STATE", > > + "DRM_UT_LEASE", > > + "DRM_UT_DP", > > + "DRM_UT_DRMRES"); > > Looks like this stuff just ends up in an array, so presumably > it should be possible to use designated initializers to make this > less fragile? Im not sure I got your whole point, but: the fragility is the repetitive re-statement of the map, in those un-modified DECLARE_s, once replaced, the USEs just ref the struct built by the _DEFINE (once, and exported) I dont really like the _DEFINEs restatement of the enum-values: DRM_UT_* especially as "strings". I can automate the stringification with an APPLY_FN_(__stringify, ...) but the enum-list DRM_UT_* (w.o quotes) is still needed as args. unless there is something C can do thats like Enum.values() ? > > -- > Ville Syrjälä > Intel
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index 699b7dbffd7b..4a5f2317229b 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -55,18 +55,19 @@ MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug cat #if !defined(CONFIG_DRM_USE_DYNAMIC_DEBUG) module_param_named(debug, __drm_debug, ulong, 0600); #else -/* classnames must match vals of enum drm_debug_category */ -DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, - "DRM_UT_CORE", - "DRM_UT_DRIVER", - "DRM_UT_KMS", - "DRM_UT_PRIME", - "DRM_UT_ATOMIC", - "DRM_UT_VBL", - "DRM_UT_STATE", - "DRM_UT_LEASE", - "DRM_UT_DP", - "DRM_UT_DRMRES"); +/* classnames must match value-symbols of enum drm_debug_category */ +DRM_CLASSMAP_DEFINE(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, + DRM_UT_CORE, + "DRM_UT_CORE", + "DRM_UT_DRIVER", + "DRM_UT_KMS", + "DRM_UT_PRIME", + "DRM_UT_ATOMIC", + "DRM_UT_VBL", + "DRM_UT_STATE", + "DRM_UT_LEASE", + "DRM_UT_DP", + "DRM_UT_DRMRES"); static struct ddebug_class_param drm_debug_bitmap = { .bits = &__drm_debug, diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h index 9cc473e5d353..905fc25bf65a 100644 --- a/include/drm/drm_print.h +++ b/include/drm/drm_print.h @@ -140,6 +140,14 @@ enum drm_debug_category { DRM_UT_DRMRES }; +#ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG +#define DRM_CLASSMAP_DEFINE(...) DYNDBG_CLASSMAP_DEFINE(__VA_ARGS__) +#define DRM_CLASSMAP_USE(name) DYNDBG_CLASSMAP_USE(name) +#else +#define DRM_CLASSMAP_DEFINE(...) +#define DRM_CLASSMAP_USE(name) +#endif + static inline bool drm_debug_enabled_raw(enum drm_debug_category category) { return unlikely(__drm_debug & BIT(category));
dyndbg's CLASSMAP-v1 api was broken; DECLARE_DYNDBG_CLASSMAP tried to do too much. Its replaced by DRM_CLASSMAP_DEFINE, which creates & EXPORTs the classmap when CONFIG_DRM_USE_DYNAMIC_DEBUG=y, for direct reference by drivers. The drivers still use DECLARE_DYNDBG_CLASSMAP for now, so they still redundantly re-declare the classmap, but we can convert the drivers later to DYNDBG_CLASSMAP_USE Signed-off-by: Jim Cromie <jim.cromie@gmail.com> --- drivers/gpu/drm/drm_print.c | 25 +++++++++++++------------ include/drm/drm_print.h | 8 ++++++++ 2 files changed, 21 insertions(+), 12 deletions(-)