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OpenCloudOS-Kernel/net/sched
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Paolo Abeni 32f7b44d0f sched: manipulate __QDISC_STATE_RUNNING in qdisc_run_* helpers 
Currently NOLOCK qdiscs pay a measurable overhead to atomically
manipulate the __QDISC_STATE_RUNNING. Such bit is flipped twice per
packet in the uncontended scenario with packet rate below the
line rate: on packed dequeue and on the next, failing dequeue attempt.

This changeset moves the bit manipulation into the qdisc_run_{begin,end}
helpers, so that the bit is now flipped only once per packet, with
measurable performance improvement in the uncontended scenario.

This also allows simplifying the qdisc teardown code path - since
qdisc_is_running() is now effective for each qdisc type - and avoid a
possible race between qdisc_run() and dev_deactivate_many(), as now
the some_qdisc_is_busy() can properly detect NOLOCK qdiscs being busy
dequeuing packets.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-05-16 12:26:25 -04:00
..
Kconfig net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
Makefile net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
act_api.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-04-01 19:49:34 -04:00
act_bpf.c net/sched: fix NULL dereference in the error path of tcf_bpf_init() 2018-04-05 22:26:06 -04:00
act_connmark.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_csum.c net sched: Implemented get_fill_size routine for act_csum. 2018-05-03 11:15:58 -04:00
act_gact.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_ife.c net: sched: ife: handle malformed tlv length 2018-04-22 21:12:00 -04:00
act_ipt.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_meta_mark.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_meta_skbprio.c net sched actions: change IFE modules alias names 2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_mirred.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_nat.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_pedit.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_police.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_sample.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_simple.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_skbedit.c net sched actions: fix invalid pointer dereferencing if skbedit flags missing 2018-05-11 15:52:43 -04:00
act_skbmod.c net sched actions: fix refcnt leak in skbmod 2018-05-11 16:37:03 -04:00
act_tunnel_key.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_vlan.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
cls_api.c net: sched: fix error path in tcf_proto_create() when modules are not configured 2018-05-11 16:34:38 -04:00
cls_basic.c cls_basic: Convert to use idr_alloc_u32 2018-02-06 16:41:26 -05:00
cls_bpf.c cls_bpf: Convert to use idr_alloc_u32 2018-02-06 16:41:26 -05:00
cls_cgroup.c net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_flow.c net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_flower.c cls_flower: Support multiple masks per priority 2018-05-01 14:14:15 -04:00
cls_fw.c net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_matchall.c cls_matchall: propagate extack to delete callback 2018-01-24 16:01:10 -05:00
cls_route.c net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_rsvp.c
…
cls_rsvp.h net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_rsvp6.c
…
cls_tcindex.c net: sched: propagate extack to cls->destroy callbacks 2018-01-24 16:01:09 -05:00
cls_u32.c net_sched: fix a missing idr_remove() in u32_delete_key() 2018-04-07 12:36:45 -04:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_cmp.c
…
em_ipset.c netfilter: x_tables: move hook state into xt_action_param structure 2016-11-03 10:56:21 +01:00
em_ipt.c net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
em_meta.c net: convert sock.sk_refcnt from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
em_nbyte.c net: sched: em_nbyte: don't add the data offset twice 2018-01-24 14:52:40 -05:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c
…
ematch.c net: sched: ematch: obtain net pointer from blocks 2017-10-16 21:00:40 +01:00
sch_api.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
sch_atm.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_blackhole.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_cbq.c net: sch: sch_cbq: add extack support 2017-12-21 12:32:51 -05:00
sch_cbs.c net: sch: sch_cbs: add extack support 2017-12-21 12:32:51 -05:00
sch_choke.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_codel.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_drr.c net: sch: sch_drr: add extack support 2017-12-21 12:32:51 -05:00
sch_dsmark.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_fifo.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_fq.c net_sched: fq: take care of throttled flows before reuse 2018-05-02 16:37:38 -04:00
sch_fq_codel.c net: sch: api: add extack support in tcf_block_get 2017-12-21 12:32:51 -05:00
sch_generic.c sched: manipulate __QDISC_STATE_RUNNING in qdisc_run_* helpers 2018-05-16 12:26:25 -04:00
sch_gred.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_hfsc.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_hhf.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_htb.c net: sched: do not emit messages while holding spinlock 2018-04-01 20:53:50 -04:00
sch_ingress.c net: sched: allow ingress and clsact qdiscs to share filter blocks 2018-01-17 14:53:57 -05:00
sch_mq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_mqprio.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_multiq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_netem.c sch_netem: fix skb leak in netem_enqueue() 2018-03-07 11:18:14 -05:00
sch_pie.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_plug.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_prio.c net: sch: prio: Add offload ability for grafting a child 2018-02-28 12:06:01 -05:00
sch_qfq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_red.c net: sched: red: don't reset the backlog on every stat dump 2018-01-17 14:29:32 -05:00
sch_sfb.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_sfq.c net: sch: api: add extack support in tcf_block_get 2017-12-21 12:32:51 -05:00
sch_tbf.c net: sched: tbf: handle GSO_BY_FRAGS case in enqueue 2018-03-04 17:49:17 -05:00
sch_teql.c net: sched: sch: add extack for init callback 2017-12-21 12:32:50 -05:00