On Tue, 2022-05-10 at 21:33 +0300, Jouni Högander wrote: > Add drm_debug_once* macros to allow printing out one time debug > messages which can be still controlled via drm.debug parameter. Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx> > > Cc: José Roberto de Souza <jose.souza@xxxxxxxxx> > Cc: Mika Kahola <mika.kahola@xxxxxxxxx> > Cc: Mark Pearson <markpearson@xxxxxxxxxx> > Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx> > --- > include/drm/drm_print.h | 29 +++++++++++++++++++++++++++++ > 1 file changed, 29 insertions(+) > > diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h > index 22fabdeed297..e339f47eeb6d 100644 > --- a/include/drm/drm_print.h > +++ b/include/drm/drm_print.h > @@ -476,6 +476,35 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category, > #define drm_dbg_drmres(drm, fmt, ...) \ > drm_dev_dbg((drm) ? (drm)->dev : NULL, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) > > +#define drm_dev_dbg_once(dev, cat, fmt, ...) \ > +({ \ > + static bool __print_once __read_mostly; \ > + if (!__print_once) { \ > + __print_once = true; \ > + drm_dev_dbg(dev, cat, fmt, ##__VA_ARGS__); \ > + } \ > +}) > + > +#define drm_dbg_once_core(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_CORE, fmt, ##__VA_ARGS__) > +#define drm_dbg_once(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_DRIVER, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_kms(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_KMS, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_prime(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_PRIME, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_atomic(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_vbl(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_VBL, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_state(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_STATE, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_lease(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_LEASE, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_dp(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_DP, fmt, ##__VA_ARGS__) > +#define drm_dbg_once_drmres(drm, fmt, ...) \ > + drm_dev_dbg_once((drm) ? (drm)->dev : NULL, DRM_UT_DRMRES, fmt, ##__VA_ARGS__) > > /* > * printk based logging