linux/net/sched
Paolo Valente 76e4cb0d3a pkt_sched: sch_qfq: remove a useless invocation of qfq_update_eligible
QFQ+ can select for service only 'eligible' aggregates, i.e.,
aggregates that would have started to be served also in the emulated
ideal system.  As a consequence, for QFQ+ to be work conserving, at
least one of the active aggregates must be eligible when it is time to
choose the next aggregate to serve.

The set of eligible aggregates is updated through the function
qfq_update_eligible(), which does guarantee that, after its
invocation, at least one of the active aggregates is eligible.
Because of this property, this function is invoked in
qfq_deactivate_agg() to guarantee that at least one of the active
aggregates is still eligible after an aggregate has been deactivated.
In particular, the critical case is when there are other active
aggregates, but the aggregate being deactivated happens to be the only
one eligible.

However, this precaution is not needed for QFQ+ to be work conserving,
because update_eligible() is always invoked also at the beginning of
qfq_choose_next_agg(). This patch removes the additional invocation of
update_eligible() in qfq_deactivate_agg().

Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Reviewed-by: Fabio Checconi <fchecconi@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-06 02:47:05 -05:00
..
act_api.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_csum.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_gact.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_ipt.c net: Add skb_unclone() helper function. 2013-02-15 15:10:37 -05:00
act_mirred.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_nat.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_pedit.c net: Add skb_unclone() helper function. 2013-02-15 15:10:37 -05:00
act_police.c act_police: improved accuracy at high rates 2013-02-12 18:59:45 -05:00
act_simple.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
act_skbedit.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_api.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_basic.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_cgroup.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_flow.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_fw.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_route.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_rsvp6.c
cls_rsvp.c
cls_rsvp.h pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_tcindex.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
cls_u32.c pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
em_canid.c
em_cmp.c
em_ipset.c
em_meta.c
em_nbyte.c
em_text.c
em_u32.c
ematch.c
Kconfig
Makefile
sch_api.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sch_atm.c
sch_blackhole.c
sch_cbq.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sch_choke.c
sch_codel.c
sch_drr.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sch_dsmark.c
sch_fifo.c
sch_fq_codel.c
sch_generic.c sch: make htb_rate_cfg and functions around that generic 2013-02-12 18:59:45 -05:00
sch_gred.c
sch_hfsc.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sch_htb.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
sch_ingress.c
sch_mq.c pkt_sched: avoid requeues if possible 2012-12-12 00:16:47 -05:00
sch_mqprio.c pkt_sched: avoid requeues if possible 2012-12-12 00:16:47 -05:00
sch_multiq.c
sch_netem.c netem: fix delay calculation in rate extension 2013-01-29 15:43:02 -05:00
sch_plug.c
sch_prio.c
sch_qfq.c pkt_sched: sch_qfq: remove a useless invocation of qfq_update_eligible 2013-03-06 02:47:05 -05:00
sch_red.c
sch_sfb.c
sch_sfq.c
sch_tbf.c tbf: improved accuracy at high rates 2013-02-12 18:59:45 -05:00
sch_teql.c