linux/net/core
Eric Dumazet 2543a6000e gro_cells: reduce number of synchronize_net() calls
After cited commit, gro_cells_destroy() became damn slow
on hosts with a lot of cores.

This is because we have one additional synchronize_net() per cpu as
stated in the changelog.

gro_cells_init() is setting NAPI_STATE_NO_BUSY_POLL, and this was enough
to not have one synchronize_net() call per netif_napi_del()

We can factorize all the synchronize_net() to a single one,
right before freeing per-cpu memory.

Fixes: 5198d545db ("net: remove napi_hash_del() from driver-facing API")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20201124203822.1360107-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 11:28:12 -08:00
..
bpf_sk_storage.c bpf: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON 2020-09-25 13:58:01 -07:00
datagram.c net: zerocopy: combine pages in zerocopy_sg_from_iter() 2020-08-20 16:12:50 -07:00
datagram.h
dev_addr_lists.c net: core: add nested_level variable in net_device 2020-09-28 15:00:15 -07:00
dev_ioctl.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dev.c random32: add noise from network and scheduling activity 2020-10-24 20:21:57 +02:00
devlink.c devlink: Fix reload stats structure 2020-11-24 13:04:04 -08:00
drop_monitor.c genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
dst_cache.c
dst.c net: Correct the comment of dst_dev_put() 2020-09-10 13:28:57 -07:00
failover.c
fib_notifier.c net: fib_notifier: propagate extack down to the notifier block callback 2019-10-04 11:10:56 -07:00
fib_rules.c fib: fix fib_rule_ops indirect call wrappers when CONFIG_IPV6=m 2020-09-08 20:09:08 -07:00
filter.c net: Properly typecast int values to set sk_max_pacing_rate 2020-10-22 12:18:25 -07:00
flow_dissector.c net: flow_dissector: avoid indirect call to DSA .flow_dissect for generic case 2020-09-26 14:17:59 -07:00
flow_offload.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
gen_estimator.c net_sched: gen_estimator: extend packet counter to 64bit 2019-11-06 21:51:36 -08:00
gen_stats.c docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c net: Add IF_OPER_TESTING 2020-04-20 12:43:24 -07:00
lwt_bpf.c net: add net available in build_state 2020-03-29 22:30:57 -07:00
lwtunnel.c net: ipv6: add rpl sr tunnel 2020-03-29 22:30:57 -07:00
Makefile ethtool: move to its own directory 2019-12-12 17:07:05 -08:00
neighbour.c net: Exempt multicast addresses from five-second neighbor lifetime 2020-11-13 14:24:39 -08:00
net_namespace.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
net-procfs.c net-sysfs: add backlog len and CPU id to softnet data 2020-09-21 13:56:37 -07:00
net-sysfs.c net-sysfs: Fix inconsistent of format with argument type in net-sysfs.c 2020-10-01 18:45:23 -07:00
net-sysfs.h net-sysfs: add netdev_change_owner() 2020-02-26 20:07:25 -08:00
net-traces.c
netclassid_cgroup.c cgroup, netclassid: remove double cond_resched 2020-04-21 15:44:30 -07:00
netevent.c
netpoll.c net: Have netpoll bring-up DSA management interface 2020-11-18 11:04:11 -08:00
netprio_cgroup.c netprio_cgroup: Fix unlimited memory leak of v2 cgroups 2020-05-09 20:59:21 -07:00
page_pool.c net: page pool: allow to pass zero flags to page_pool_init() 2020-03-29 21:49:20 -07:00
pktgen.c pktgen: Fix inconsistent of format with argument type in pktgen.c 2020-10-01 18:45:23 -07:00
ptp_classifier.c ptp: Add generic ptp v2 header parsing function 2020-08-19 16:07:49 -07:00
request_sock.c tcp: add rcu protection around tp->fastopen_rsk 2019-10-13 10:13:08 -07:00
rtnetlink.c rtnetlink: fix data overflow in rtnl_calcit() 2020-10-21 18:24:08 -07:00
scm.c fs: Add receive_fd() wrapper for __receive_fd() 2020-07-13 11:03:44 -07:00
secure_seq.c crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h 2020-05-08 15:32:17 +10:00
skbuff.c networking changes for the 5.10 merge window 2020-10-15 18:42:13 -07:00
skmsg.c bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list 2020-11-18 00:14:04 +01:00
sock_diag.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
sock_map.c net, sockmap: Don't call bpf_prog_put() on NULL pointer 2020-10-15 21:05:23 +02:00
sock_reuseport.c udp: Copy has_conns in reuseport_grow(). 2020-07-21 15:31:02 -07:00
sock.c net: Properly typecast int values to set sk_max_pacing_rate 2020-10-22 12:18:25 -07:00
stream.c tcp: make sure EPOLLOUT wont be missed 2019-08-19 13:07:43 -07:00
sysctl_net_core.c net: add option to not create fall-back tunnels in root-ns as well 2020-08-28 06:52:44 -07:00
timestamping.c net: Introduce a new MII time stamping interface. 2019-12-25 19:51:33 -08:00
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c net: Fix skb->csum update in inet_proto_csum_replace16(). 2020-01-24 20:54:30 +01:00
xdp.c bpf, xdp: Remove XDP_QUERY_PROG and XDP_QUERY_PROG_HW XDP commands 2020-07-25 20:37:02 -07:00