ipoib: Make ipoib_warn ratelimited
In certain cases it's possible to be flooded by warning messages. To
cope with such situations make the ipoib_warn macro be ratelimited.
To prevent accidental limiting of legitimate, bursty messages make
the limit fairly liberal by allowing up to 100 messages in 10 seconds.
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 4f7d9b4..7899167 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -771,7 +771,13 @@
#define ipoib_printk(level, priv, format, arg...) \
printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
#define ipoib_warn(priv, format, arg...) \
- ipoib_printk(KERN_WARNING, priv, format , ## arg)
+do { \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ 10 * HZ /*10 seconds */, \
+ 100); \
+ if (__ratelimit(&_rs)) \
+ ipoib_printk(KERN_WARNING, priv, format , ## arg);\
+} while (0)
extern int ipoib_sendq_size;
extern int ipoib_recvq_size;
