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Anssi Hannula 383798d13a hv_balloon: rate-limit "Unhandled message" warning

[ Upstream commit 1d7286729a ]

For a couple of times I have encountered a situation where

  hv_balloon: Unhandled message: type: 12447

is being flooded over 1 million times per second with various values,
filling the log and consuming cycles, making debugging difficult.

Add rate limiting to the message.

Most other Hyper-V drivers already have similar rate limiting in their
message callbacks.

The cause of the floods in my case was probably fixed by 96d9d1fa5c
("Drivers: hv: balloon: account for vmbus packet header in
max_pkt_size").

Fixes: 9aa8b50b2b ("Drivers: hv: Add Hyper-V balloon driver")
Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220222141400.98160-1-anssi.hannula@bitwise.fi
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-04-08 14:23:37 +02:00

channel_mgmt.c

Drivers: hv: vmbus: Fix duplicate CPU assignments within a device

2021-07-19 09:26:31 +00:00

channel.c

scsi: storvsc: Use blk_mq_unique_tag() to generate requestIDs

2021-05-14 17:39:32 +00:00

connection.c

drivers: hv: Fix missing error code in vmbus_connect()

2021-06-02 15:16:36 +00:00

hv_balloon.c

hv_balloon: rate-limit "Unhandled message" warning