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OpenCloudOS-Kernel/net/sched
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Michal Hocko da6bc57a8f net: use kvmalloc with __GFP_REPEAT rather than open coded variant 
fq_alloc_node, alloc_netdev_mqs and netif_alloc* open code kmalloc with
vmalloc fallback.  Use the kvmalloc variant instead.  Keep the
__GFP_REPEAT flag based on explanation from Eric:

 "At the time, tests on the hardware I had in my labs showed that
  vmalloc() could deliver pages spread all over the memory and that was
  a small penalty (once memory is fragmented enough, not at boot time)"

The way how the code is constructed means, however, that we prefer to go
and hit the OOM killer before we fall back to the vmalloc for requests
<=32kB (with 4kB pages) in the current code.  This is rather disruptive
for something that can be achived with the fallback.  On the other hand
__GFP_REPEAT doesn't have any useful semantic for these requests.  So
the effect of this patch is that requests which fit into 32kB will fall
back to vmalloc easier now.

Link: http://lkml.kernel.org/r/20170306103327.2766-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Eric Dumazet <edumazet@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2017-05-08 17:15:13 -07:00
..
Kconfig Subject: net: allow configuring default qdisc 2017-04-17 13:23:06 -04:00
Makefile net/sched: Introduce sample tc action 2017-01-24 13:44:28 -05:00
act_api.c net: sched: add helpers to handle extended actions 2017-05-02 15:33:54 -04:00
act_bpf.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_connmark.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_csum.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_gact.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_ife.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_ipt.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_meta_mark.c Support to encoding decoding skb mark on IFE action 2016-03-01 17:15:23 -05:00
act_meta_skbprio.c Support to encoding decoding skb prio on IFE action 2016-03-01 17:15:23 -05:00
act_meta_skbtcindex.c net sched ife action: Introduce skb tcindex metadata encap decap 2016-09-19 21:55:28 -04:00
act_mirred.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_nat.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_pedit.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_police.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_sample.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_simple.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_skbedit.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_skbmod.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_tunnel_key.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
act_vlan.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
cls_api.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_basic.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_bpf.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_cgroup.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_flow.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_flower.c flower: check unused bits in MPLS fields 2017-05-01 11:12:21 -04:00
cls_fw.c net_sched: remove useless NULL to tp->root 2017-04-21 13:58:15 -04:00
cls_matchall.c net/sched: remove redundant null check on head 2017-05-04 11:01:30 -04:00
cls_route.c net_sched: remove useless NULL to tp->root 2017-04-21 13:58:15 -04:00
cls_rsvp.c
…
cls_rsvp.h net_sched: remove useless NULL to tp->root 2017-04-21 13:58:15 -04:00
cls_rsvp6.c
…
cls_tcindex.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
cls_u32.c net_sched: move the empty tp check from ->destroy() to ->delete() 2017-04-21 13:58:15 -04:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_cmp.c net_sched: cleanups 2011-01-19 23:31:12 -08:00
em_ipset.c netfilter: x_tables: move hook state into xt_action_param structure 2016-11-03 10:56:21 +01:00
em_meta.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
em_nbyte.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c net_sched: cleanups 2011-01-19 23:31:12 -08:00
ematch.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_api.c net: rtnetlink: plumb extended ack to doit function 2017-04-17 15:35:38 -04:00
sch_atm.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_blackhole.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_cbq.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_choke.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
sch_codel.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_drr.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_dsmark.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_fifo.c sched: don't use skb queue helpers 2016-09-19 01:47:18 -04:00
sch_fq.c net: use kvmalloc with __GFP_REPEAT rather than open coded variant 2017-05-08 17:15:13 -07:00
sch_fq_codel.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
sch_generic.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-15 21:16:30 -04:00
sch_gred.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_hfsc.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_hhf.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
sch_htb.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_ingress.c sched: move tcf_proto_destroy and tcf_destroy_chain helpers into cls_api 2017-02-10 11:38:08 -05:00
sch_mq.c net: sched: make default fifo qdiscs appear in the dump 2017-03-12 22:53:02 -07:00
sch_mqprio.c mqprio: Modify mqprio to pass user parameters via ndo_setup_tc. 2017-03-15 15:20:27 -07:00
sch_multiq.c net: sched: make default fifo qdiscs appear in the dump 2017-03-12 22:53:02 -07:00
sch_netem.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
sch_pie.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_plug.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_prio.c net: sched: make default fifo qdiscs appear in the dump 2017-03-12 22:53:02 -07:00
sch_qfq.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_red.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_sfb.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_sfq.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
sch_tbf.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
sch_teql.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00