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Commit 27528c66 authored by Lyude's avatar Lyude Committed by Daniel Vetter
Browse files

drm: Add ratelimited versions of the DRM_DEBUG* macros 



There's a couple of places where this would be useful for drivers (such
as reporting DP aux transaction timeouts).

Signed-off-by: default avatarLyude <cpaul@redhat.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1470443443-27252-7-git-send-email-cpaul@redhat.com
parent cfc5adea

include/drm/drmP.h

+30 −0
Original line number Diff line number Diff line
@@ -232,6 +232,36 @@ void drm_err(const char *format, ...); 
			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)



#define _DRM_DEFINE_DEBUG_RATELIMITED(level, fmt, args...)		\

	do {								\

		if (unlikely(drm_debug & DRM_UT_ ## level)) {		\

			static DEFINE_RATELIMIT_STATE(			\

				_rs,					\

				DEFAULT_RATELIMIT_INTERVAL,		\

				DEFAULT_RATELIMIT_BURST);		\

									\

			if (__ratelimit(&_rs)) {			\

				drm_ut_debug_printk(__func__, fmt,	\

						    ##args);		\

			}						\

		}							\

	} while (0)



/**

 * Rate limited debug output. Like DRM_DEBUG() but won't flood the log.

 *

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_DEBUG_RATELIMITED(fmt, args...)				\

	_DRM_DEFINE_DEBUG_RATELIMITED(CORE, fmt, ##args)

#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...)			\

	_DRM_DEFINE_DEBUG_RATELIMITED(DRIVER, fmt, ##args)

#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...)				\

	_DRM_DEFINE_DEBUG_RATELIMITED(KMS, fmt, ##args)

#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...)			\

	_DRM_DEFINE_DEBUG_RATELIMITED(PRIME, fmt, ##args)



/*@}*/



/***********************************************************************/