Alexei Starovoitov 4d1ceea851 net: ethtool: convert large order kmalloc allocations to vzalloc ... under memory pressure 'ethtool -S' command may warn: [ 2374.385195] ethtool: page allocation failure: order:4, mode:0x242c0c0 [ 2374.405573] CPU: 12 PID: 40211 Comm: ethtool Not tainted [ 2374.423071] Call Trace: [ 2374.423076] [<ffffffff8148cb29>] dump_stack+0x4d/0x64 [ 2374.423080] [<ffffffff811667cb>] warn_alloc_failed+0xeb/0x150 [ 2374.423082] [<ffffffff81169cd3>] ? __alloc_pages_direct_compact+0x43/0xf0 [ 2374.423084] [<ffffffff8116a25c>] __alloc_pages_nodemask+0x4dc/0xbf0 [ 2374.423091] [<ffffffffa0023dc2>] ? cmd_exec+0x722/0xcd0 [mlx5_core] [ 2374.423095] [<ffffffff811b3dcc>] alloc_pages_current+0x8c/0x110 [ 2374.423097] [<ffffffff81168859>] alloc_kmem_pages+0x19/0x90 [ 2374.423099] [<ffffffff81186e5e>] kmalloc_order_trace+0x2e/0xe0 [ 2374.423101] [<ffffffff811c0084>] __kmalloc+0x204/0x220 [ 2374.423105] [<ffffffff816c269e>] dev_ethtool+0xe4e/0x1f80 [ 2374.423106] [<ffffffff816b967e>] ? dev_get_by_name_rcu+0x5e/0x80 [ 2374.423108] [<ffffffff816d6926>] dev_ioctl+0x156/0x560 [ 2374.423111] [<ffffffff811d4c68>] ? mem_cgroup_commit_charge+0x78/0x3c0 [ 2374.423117] [<ffffffff8169d542>] sock_do_ioctl+0x42/0x50 [ 2374.423119] [<ffffffff8169d9c3>] sock_ioctl+0x1b3/0x250 [ 2374.423121] [<ffffffff811f0f42>] do_vfs_ioctl+0x92/0x580 [ 2374.423123] [<ffffffff8100222b>] ? do_audit_syscall_entry+0x4b/0x70 [ 2374.423124] [<ffffffff8100287c>] ? syscall_trace_enter_phase1+0xfc/0x120 [ 2374.423126] [<ffffffff811f14a9>] SyS_ioctl+0x79/0x90 [ 2374.423127] [<ffffffff81002bb0>] do_syscall_64+0x50/0xa0 [ 2374.423129] [<ffffffff817e19bc>] entry_SYSCALL64_slow_path+0x25/0x25 ~1160 mlx5 counters ~= order 4 allocation which is unlikely to succeed under memory pressure. Convert them to vzalloc() as ethtool_get_regs() does. Also take care of drivers without counters similar to commit 67ae7cf1ee ("ethtool: Allow zero-length register dumps again") and reduce warn_on to warn_on_once. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-01-31 13:28:06 -05:00
..
datagram.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dev_addr_lists.c
dev_ioctl.c
dev.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-01-28 10:33:06 -05:00
devlink.c	devlink: Add E-Switch inline mode control	2016-11-24 16:01:14 -05:00
drop_monitor.c	drop_monitor: consider inserted data in genlmsg_end	2017-01-03 11:09:44 -05:00
dst_cache.c	net: dst_cache_per_cpu_dst_set() can be static	2016-03-18 17:45:08 -04:00
dst.c	net: add dst_cache to ovs vxlan lwtunnel	2016-02-16 20:21:48 -05:00
ethtool.c	net: ethtool: convert large order kmalloc allocations to vzalloc	2017-01-31 13:28:06 -05:00
fib_rules.c	net: core: add missing check for uid_range in rule_exists.	2016-11-09 13:28:10 -05:00
filter.c	bpf: allow option for setting bpf_l4_csum_replace from scratch	2017-01-24 14:46:06 -05:00
flow_dissector.c	flow dissector: check if arp_eth is null rather than arp	2017-01-16 13:48:48 -05:00
flow.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 19:25:04 -08:00
gen_estimator.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
gen_stats.c	net_sched: gen_estimator: complete rewrite of rate estimators	2016-12-05 15:21:59 -05:00
hwbm.c	net: hwbm: Fix unbalanced spinlock in error case	2016-05-25 12:35:09 -07:00
link_watch.c	dev: introduce dev_get_iflink()	2015-04-02 14:04:59 -04:00
lwt_bpf.c	lwtunnel: remove device arg to lwtunnel_build_state	2017-01-30 15:14:22 -05:00
lwtunnel.c	lwtunnel: remove device arg to lwtunnel_build_state	2017-01-30 15:14:22 -05:00
Makefile	bpf: BPF for lightweight tunnel infrastructure	2016-12-02 10:51:49 -05:00
neighbour.c	neigh: Send netevent after marking neigh as dead	2016-12-23 12:31:18 -05:00
net_namespace.c	Merge branch 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit	2016-12-14 14:06:40 -08:00
net-procfs.c	net: remove NETDEV_TX_LOCKED support	2016-04-26 15:53:05 -04:00
net-sysfs.c	net: Add support for XPS with QoS via traffic classes	2016-10-31 15:00:48 -04:00
net-sysfs.h
net-traces.c	net: IPv6 fib lookup tracepoint	2015-11-22 11:54:10 -05:00
netclassid_cgroup.c	core: remove unneded headers for net cgroup controllers.	2016-02-17 15:31:27 -05:00
netevent.c	netevent: remove automatic variable in register_netevent_notifier()	2015-05-31 00:03:21 -07:00
netpoll.c	netpoll: more efficient locking	2016-11-16 18:32:02 -05:00
netprio_cgroup.c	core: remove unneded headers for net cgroup controllers.	2016-02-17 15:31:27 -05:00
pktgen.c	net-tc: convert tc_verd to integer bitfields	2017-01-08 20:58:52 -05:00
ptp_classifier.c	ptp: Change ptp_class to a proper bitmask	2015-11-03 11:08:22 -05:00
request_sock.c	ipv4: Namespaceify tcp_max_syn_backlog knob	2016-12-29 11:38:31 -05:00
rtnetlink.c	device: Implement a bus agnostic dev_num_vf routine	2017-01-20 11:43:17 -05:00
scm.c	scm: remove use CMSG{_COMPAT}_ALIGN(sizeof(struct {compat_}cmsghdr))	2017-01-04 13:04:37 -05:00
secure_seq.c	secure_seq: fix sparse errors	2017-01-12 15:57:10 -05:00
skbuff.c	net: adjust skb->truesize in pskb_expand_head()	2017-01-27 12:03:29 -05:00
sock_diag.c	sock_diag: align nlattr properly when needed	2016-04-26 12:00:48 -04:00
sock_reuseport.c	soreuseport: do not export reuseport_add_sock()	2016-10-18 14:18:23 -04:00
sock.c	net: fix AF_SMC related typo	2017-01-12 09:47:01 -05:00
stream.c	net: fix sleeping for sk_wait_event()	2016-11-14 13:17:21 -05:00
sysctl_net_core.c	net: dev_weight: TX/RX orthogonality	2016-12-29 15:38:35 -05:00
timestamping.c	net: skb_defer_rx_timestamp should check for phydev before setting up classify	2015-07-09 14:17:15 -07:00
tso.c	net: tso: add support for IPv6	2015-10-26 22:24:22 -07:00
utils.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00