driver core: Add dev_*_ratelimited() family

Add dev_*_ratelimited() family, dev_* version of pr_*_ratelimited().

Using Joe Perches's proposal/implementation.

Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/linux/device.h b/include/linux/device.h
index 863acf8..a8db2cf 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -23,6 +23,7 @@
 #include <linux/mutex.h>
 #include <linux/pm.h>
 #include <linux/atomic.h>
+#include <linux/ratelimit.h>
 #include <asm/device.h>
 
 struct device;
@@ -933,6 +934,32 @@ int _dev_info(const struct device *dev, const char *fmt, ...)
 
 #endif
 
+#define dev_level_ratelimited(dev_level, dev, fmt, ...)                        \
+do {                                                                   \
+       static DEFINE_RATELIMIT_STATE(_rs,                              \
+                                     DEFAULT_RATELIMIT_INTERVAL,       \
+                                     DEFAULT_RATELIMIT_BURST);         \
+       if (__ratelimit(&_rs))                                          \
+               dev_level(dev, fmt, ##__VA_ARGS__);                     \
+} while (0)
+
+#define dev_emerg_ratelimited(dev, fmt, ...)                           \
+       dev_level_ratelimited(dev_emerg, dev, fmt, ##__VA_ARGS__)
+#define dev_alert_ratelimited(dev, fmt, ...)                           \
+       dev_level_ratelimited(dev_alert, dev, fmt, ##__VA_ARGS__)
+#define dev_crit_ratelimited(dev, fmt, ...)                            \
+       dev_level_ratelimited(dev_crit, dev, fmt, ##__VA_ARGS__)
+#define dev_err_ratelimited(dev, fmt, ...)                             \
+       dev_level_ratelimited(dev_err, dev, fmt, ##__VA_ARGS__)
+#define dev_warn_ratelimited(dev, fmt, ...)                            \
+       dev_level_ratelimited(dev_warn, dev, fmt, ##__VA_ARGS__)
+#define dev_notice_ratelimited(dev, fmt, ...)                          \
+       dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
+#define dev_info_ratelimited(dev, fmt, ...)                            \
+       dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
+#define dev_dbg_ratelimited(dev, fmt, ...)                             \
+       dev_level_ratelimited(dev_dbg, dev, fmt, ##__VA_ARGS__)
+
 /*
  * Stupid hackaround for existing uses of non-printk uses dev_info
  *