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authorkernel@kyup.com <kernel@kyup.com>2016-08-08 17:14:22 +0300
committerDoug Ledford <dledford@redhat.com>2016-10-07 16:54:33 -0400
commit32f7451d1c6214169848cfea331e2c9d4067a650 (patch)
tree47dfd1682a15284383f8d82bd23a06e94cb845e4 /drivers
parentfb6375d7e6e743fc88a416cbfab89f608ed9ebcb (diff)
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 4f7d9b48df64..7899167536e3 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -771,7 +771,13 @@ 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_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;