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| author | Lyude <cpaul@redhat.com> | 2016-08-05 20:30:38 -0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-08-09 18:23:43 +0200 |
| commit | 27528c667a210845b35a1f49c810dba469bced52 (patch) | |
| tree | f25ee1e8b89b29def0f103c164453f8912fa645b /include/drm/drmP.h | |
| parent | cfc5adea1955ee8ddb62cc0d20ee454472033b6a (diff) | |
| download | linux-stable-27528c667a210845b35a1f49c810dba469bced52.tar.gz linux-stable-27528c667a210845b35a1f49c810dba469bced52.tar.bz2 linux-stable-27528c667a210845b35a1f49c810dba469bced52.zip | |
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: Lyude <cpaul@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1470443443-27252-7-git-send-email-cpaul@redhat.com
Diffstat (limited to 'include/drm/drmP.h')
| -rw-r--r-- | include/drm/drmP.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 856c174bd730..f8e87fde611b 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -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) + /*@}*/ /***********************************************************************/ |