Jesse Brandeburg eaeace6077 igb: fix netpoll exit with traffic ... Oleksandr brought a bug report where netpoll causes trace messages in the log on igb. Danielle brought this back up as still occurring, so we'll try again. [22038.710800] ------------[ cut here ]------------ [22038.710801] igb_poll+0x0/0x1440 [igb] exceeded budget in poll [22038.710802] WARNING: CPU: 12 PID: 40362 at net/core/netpoll.c:155 netpoll_poll_dev+0x18a/0x1a0 As Alex suggested, change the driver to return work_done at the exit of napi_poll, which should be safe to do in this driver because it is not polling multiple queues in this single napi context (multiple queues attached to one MSI-X vector). Several other drivers contain the same simple sequence, so I hope this will not create new problems. Fixes: 16eb8815c2 ("igb: Refactor clean_rx_irq to reduce overhead and improve performance") Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name> Reported-by: Danielle Ratson <danieller@nvidia.com> Suggested-by: Alexander Duyck <alexander.duyck@gmail.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Tested-by: Danielle Ratson <danieller@nvidia.com> Link: https://lore.kernel.org/r/20211123204000.1597971-1-jesse.brandeburg@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-11-25 07:39:31 -08:00
..
e1000_82575.c	igb: Fix -Wunused-const-variable warning	2021-06-01 17:00:51 -07:00
e1000_82575.h	igb: Add UDP segmentation offload support	2019-10-29 21:05:33 -07:00
e1000_defines.h	igb: Redistribute memory for transmit packet buffers when in Qav mode	2021-04-16 10:42:52 -07:00
e1000_hw.h	igb: Fix duplicate include guard	2021-03-19 08:47:46 -07:00
e1000_i210.c	intel-ethernet: clean up W=1 warnings in kdoc	2020-09-25 16:28:59 -07:00
e1000_i210.h
e1000_mac.c	igb: Add counter to i21x doublecheck	2021-07-23 09:08:11 -07:00
e1000_mac.h
e1000_mbx.c	intel: clean up mismatched header comments	2021-03-23 11:34:02 -07:00
e1000_mbx.h
e1000_nvm.c	ethernet/intel: Convert fallthrough code comments	2020-07-01 13:47:43 -07:00
e1000_nvm.h
e1000_phy.c	igb: Fix fall-through warnings for Clang	2021-03-23 11:34:02 -07:00
e1000_phy.h
e1000_regs.h	igb: add RR2DCDELAY to ethtool registers dump	2019-06-28 16:00:06 -07:00
igb_ethtool.c	ethtool: extend coalesce setting uAPI with CQE mode	2021-08-24 07:38:29 -07:00
igb_hwmon.c	igb: convert to use i2c_new_client_device()	2020-03-26 19:31:21 -07:00
igb_main.c	igb: fix netpoll exit with traffic	2021-11-25 07:39:31 -08:00
igb_ptp.c	Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net	2021-06-07 13:01:52 -07:00
igb.h	igb: Fix XDP with PTP enabled	2021-06-03 08:38:37 -07:00
Makefile