In certain cases it's possible to be flooded by warning messages. To
cope with such situation add ratelimited version of ipoib_warn -
ipoib_warn_rl. Current implementation is done in such a way so that
various messages do not skew the flood detection of one another e.g.
each is being governed by a separate ratelimit structure.
Signed-off-by: Nikolay Borisov <kernel@xxxxxxxx>
---
drivers/infiniband/ulp/ipoib/ipoib.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 3ede10309754..dc1bcb32b7a1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -763,8 +763,19 @@ static inline void ipoib_unregister_debugfs(void) { }
#define ipoib_printk(level, priv, format, arg...) \
printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
+#define ipoib_printk_warn_ratelimit(priv, fmt, args...) \
+do { \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ if (__ratelimit(&_rs)) \
+ ipoib_printk(KERN_WARNING, priv, fmt, ##args); \
+} while (0)
+
#define ipoib_warn(priv, format, arg...) \
ipoib_printk(KERN_WARNING, priv, format , ## arg)
+#define ipoib_warn_rl(priv, fmt, args...) \
+ ipoib_printk_warn_ratelimit(priv, fmt , args...)
extern int ipoib_sendq_size;
extern int ipoib_recvq_size;
--
2.5.0
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