Mark Tomlinson d3d40f2374 Revert "netfilter: x_tables: Switch synchronization to RCU" ...

This reverts commit cc00bcaa58.

This (and the preceding) patch basically re-implemented the RCU
mechanisms of patch 784544739a. That patch was replaced because of the
performance problems that it created when replacing tables. Now, we have
the same issue: the call to synchronize_rcu() makes replacing tables
slower by as much as an order of magnitude.

Prior to using RCU a script calling "iptables" approx. 200 times was
taking 1.16s. With RCU this increased to 11.59s.

Revert these patches and fix the issue in a different way.

Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2021-03-15 18:42:01 +01:00

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acpi

Merge tag 'iommu-updates-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2021-02-22 10:31:29 -08:00

asm-generic

Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2021-02-26 10:28:35 -08:00

clocksource

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crypto

Merge tag 'keys-misc-20210126' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2021-02-23 16:09:23 -08:00

drm

drm/drm_vblank: set the dma-fence timestamp during send_vblank_event

2021-02-24 21:05:54 +05:30

dt-bindings

Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2021-02-26 10:28:35 -08:00

keys

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kunit

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kvm

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linux

Revert "netfilter: x_tables: Switch synchronization to RCU"

2021-03-15 18:42:01 +01:00

math-emu

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media

Merge tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm

2021-02-22 17:45:02 -08:00

memory

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misc

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net

net: correct sk_acceptq_is_full()

2021-03-12 12:27:14 -08:00

pcmcia

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ras

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rdma

RDMA/ipoib: Remove racy Subnet Manager sendonly join checks

2021-02-16 14:42:58 -04:00

scsi

scsi: libiscsi: Add helper to calculate max SCSI cmds per session

2021-02-08 22:39:04 -05:00

soc

Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2021-02-26 10:28:35 -08:00

sound

Merge tag 'tags/sound-sdw-kconfig-fixes' into for-linus

2021-03-02 18:30:07 +01:00

target

scsi: target: core: Add cmd length set before cmd complete

2021-02-22 22:21:29 -05:00

trace

Merge tag 'block-5.12-2021-02-27' of git://git.kernel.dk/linux-block

2021-02-28 11:23:38 -08:00

uapi

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

2021-03-10 15:14:56 -08:00

vdso

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video

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xen

xen/events: add per-xenbus device event statistics and settings

2021-02-23 10:07:11 -06:00