diff options
| author | Eric Dumazet <[email protected]> | 2018-09-27 09:31:55 -0700 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-09-28 11:12:29 -0700 |
| commit | 260dd2c3e2aeefbe78065f0737dceae1ceb1196a (patch) | |
| tree | a33c30a777b2afe3b5fff357cc2e567124ba5ca1 /include/linux/fpga/fpga-mgr.h | |
| parent | 4bd2c03be707253f1157bd759fdd6971e4f70403 (diff) | |
virtio_net: remove ndo_poll_controller
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.
virto_net 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 <[email protected]>
Cc: "Michael S. Tsirkin" <[email protected]>
Cc: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'include/linux/fpga/fpga-mgr.h')
0 files changed, 0 insertions, 0 deletions