linux_dsm_epyc7002/drivers/net/hyperv
Stephen Hemminger 2a7f8c3b1d hv_netvsc: remove ndo_poll_controller
Similar to other patches from ERic.

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.

In netvsc driver it uses NAPI for TX completions. The default
poll_napi will do this for us now and avoid the capture.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-02 22:57:34 -07:00
..
hyperv_net.h hv_netvsc: Add handler for LRO setting change 2018-09-22 17:23:16 -07:00
Kconfig hv_netvsc: drop common code until callback model fixed 2018-06-12 15:22:28 -07:00
Makefile hv_netvsc: add trace points 2018-03-17 20:10:27 -04:00
netvsc_drv.c hv_netvsc: remove ndo_poll_controller 2018-10-02 22:57:34 -07:00
netvsc_trace.c hv_netvsc: add trace points 2018-03-17 20:10:27 -04:00
netvsc_trace.h hv_netvsc: add trace points 2018-03-17 20:10:27 -04:00
netvsc.c hv_netvsc: Add support for LRO/RSC in the vSwitch 2018-09-22 17:23:15 -07:00
rndis_filter.c hv_netvsc: Add handler for LRO setting change 2018-09-22 17:23:16 -07:00