Add drm_debug_once* macros to allow printing out one time debug
messages which can be still controlled via drm.debug parameter.
Cc: José Roberto de Souza <jose.so...@intel.com>
Cc: Mika Kahola <mika.kah...@intel.com>
Cc: Mark Pearson <markpear...@lenovo.com>
Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
---
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
--
2.25.1
