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| author |   kernel@kyup.com <kernel@kyup.com> | 2016-08-08 17:14:22 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2016-10-07 16:54:33 -0400 |
| commit | 32f7451d1c6214169848cfea331e2c9d4067a650 (patch) | |
| tree | 47dfd1682a15284383f8d82bd23a06e94cb845e4 | |
| parent | IB/mlx4/alias_GUID: Remove deprecated create_singlethread_workqueue (diff) | |
| download | linux-dev-32f7451d1c6214169848cfea331e2c9d4067a650.tar.xz linux-dev-32f7451d1c6214169848cfea331e2c9d4067a650.zip | |
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>
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib.h | 8 |
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; |