Eric Dumazet 83723d6071 netfilter: x_tables: dont block BH while reading counters ... Using "iptables -L" with a lot of rules have a too big BH latency. Jesper mentioned ~6 ms and worried of frame drops. Switch to a per_cpu seqlock scheme, so that taking a snapshot of counters doesnt need to block BH (for this cpu, but also other cpus). This adds two increments on seqlock sequence per ipt_do_table() call, its a reasonable cost for allowing "iptables -L" not block BH processing. Reported-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>		2011-01-10 20:11:38 +01:00
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acpi	ACPI: video: fix build for CONFIG_ACPI=n	2010-12-11 02:01:46 -05:00
asm-generic	Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2011-01-07 17:02:58 -08:00
crypto
drm	drm/i915: announce to userspace that the bsd ring is coherent	2010-12-05 10:40:39 +00:00
keys
linux	netfilter: x_tables: dont block BH while reading counters	2011-01-10 20:11:38 +01:00
math-emu
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2011-01-06 18:32:12 -08:00
mtd
net	net/sock.h: make some fields private to fix kernel-doc warning(s)	2011-01-09 16:26:51 -08:00
pcmcia
rdma
rxrpc
scsi	[SCSI] libiscsi: do not take host lock in queuecommand	2010-12-31 09:52:44 -06:00
sound	ARM: mach-shmobile: ap4evb: FSI clock use proper process for HDMI	2010-11-24 15:29:56 +09:00
trace	perf: Clean up power events by introducing new, more generic ones	2011-01-04 08:16:54 +01:00
video	Merge branch 'fbdev/udlfb'	2011-01-06 18:10:09 +09:00
xen	xen: Provide a variant of __RING_SIZE() that is an integer constant expression	2010-12-15 12:34:28 -08:00
Kbuild