linux_dsm_epyc7002/net/core
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
..
datagram.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
dev_addr_lists.c
dev_ioctl.c
dev.c net: use kvmalloc with __GFP_REPEAT rather than open coded variant 2017-05-08 17:15:13 -07:00
devlink.c net/devlink: Add E-Switch encapsulation control 2017-04-22 20:26:37 +03:00
drop_monitor.c drop_monitor: use setup_timer 2017-03-12 23:47:16 -07:00
dst_cache.c
dst.c net: pending_confirm is not used anymore 2017-02-07 13:07:47 -05:00
ethtool.c net: Add ESP offload features 2017-04-14 10:05:36 +02:00
fib_rules.c fib_rules: fix error return code 2017-04-27 16:35:57 -04:00
filter.c bpf: restore skb->sk before pskb_trim() call 2017-04-30 22:23:16 -04:00
flow_dissector.c flow_dissector: add mpls support (v2) 2017-04-24 14:30:46 -04:00
flow.c flowcache: more "unsigned int" 2017-04-03 19:04:48 -07:00
gen_estimator.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
gen_stats.c
gro_cells.c net: Generic XDP 2017-04-25 13:33:49 -04:00
hwbm.c
link_watch.c
lwt_bpf.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
lwtunnel.c lwtunnel: fix error path in lwtunnel_fill_encap() 2017-04-30 22:41:29 -04:00
Makefile gro_cells: move to net/core/gro_cells.c 2017-02-08 14:38:18 -05:00
neighbour.c net: rtnetlink: plumb extended ack to doit function 2017-04-17 15:35:38 -04:00
net_namespace.c net: Initialise init_net.count to 1 2017-04-30 22:32:16 -04:00
net-procfs.c
net-sysfs.c net: use net->count to check whether a netns is alive or not 2017-03-13 16:02:27 -07:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c cgroup, net_cls: iterate the fds of only the tasks which are being migrated 2017-03-22 10:32:46 -07:00
netevent.c
netpoll.c netpoll: Check for skb->queue_mapping 2017-04-21 15:45:19 -04:00
netprio_cgroup.c net: break include loop netdevice.h, dsa.h, devlink.h 2017-03-28 22:46:04 -07:00
pktgen.c net-tc: convert tc_verd to integer bitfields 2017-01-08 20:58:52 -05:00
ptp_classifier.c
request_sock.c ipv4: Namespaceify tcp_max_syn_backlog knob 2016-12-29 11:38:31 -05:00
rtnetlink.c rtnetlink: NUL-terminate IFLA_PHYS_PORT_NAME string 2017-05-04 11:23:59 -04:00
scm.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h> 2017-03-02 08:42:29 +01:00
secure_seq.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
skbuff.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
sock_diag.c netlink: extended ACK reporting 2017-04-13 13:58:20 -04:00
sock_reuseport.c soreuseport: use "unsigned int" in __reuseport_alloc() 2017-04-03 19:06:38 -07:00
sock.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
stream.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
sysctl_net_core.c Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning 2017-04-21 13:22:34 -04:00
timestamping.c
tso.c
utils.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00