ehea: remove ndo_poll_controller

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As diagnosed by Song Liu, ndo_poll_controller() can
be very dangerous on loaded hosts, since the cpu
calling ndo_poll_controller() might steal all NAPI
contexts (for all RX/TX queues of the NIC). This capture
can last for unlimited amount of time, since one
cpu is generally not able to drain all the queues under load.

ehea uses NAPI for TX completions, so we better let core
networking stack call the napi->poll() to avoid the capture.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Douglas Miller <dougmill@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2018-09-27 09:31:53 -07:00 • committed by David S. Miller

parent e71fb423e0

commit 226a2dd62c

1 changed files with 0 additions and 14 deletions

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drivers/net/ethernet/ibm/ehea/ehea_main.c

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