linux-kernel - [PATCH 0/2 net-next] Lockless netlink_lookup() with new concurrent hash table

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Message-Id: <cover.1406633945.git.tgraf@suug.ch>
Date:	Tue, 29 Jul 2014 13:41:31 +0200
From:	Thomas Graf <tgraf@...g.ch>
To:	davem@...emloft.net, netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, kaber@...sh.net,
	paulmck@...ux.vnet.ibm.com, josh@...htriplett.org,
	challa@...ronetworks.com, walpole@...pdx.edu, dev@...nvswitch.org
Subject: [PATCH 0/2 net-next] Lockless netlink_lookup() with new concurrent hash table

Netlink sockets are maintained in a hash table to allow efficient lookup
via the port ID for unicast messages. However, lookups currently require
a read lock to be taken. This series adds a new generic, resizable,
scalable, concurrent hash table based on the paper referenced in the first
patch. It then makes use of the new data type to implement lockless
netlink_lookup().

Against net-next since the initial user of the new hash table is in net/

Thomas Graf (2):
  lib: Resizable, Scalable, Concurrent Hash Table
  netlink: Convert netlink_lookup() to use RCU protected hash table

 include/linux/rhashtable.h | 208 ++++++++++++
 lib/Kconfig.debug          |   8 +
 lib/Makefile               |   2 +-
 lib/rhashtable.c           | 783 +++++++++++++++++++++++++++++++++++++++++++++
 net/netlink/af_netlink.c   | 285 +++++++----------
 net/netlink/af_netlink.h   |  18 +-
 net/netlink/diag.c         |  11 +-
 7 files changed, 1119 insertions(+), 196 deletions(-)
 create mode 100644 include/linux/rhashtable.h
 create mode 100644 lib/rhashtable.c

-- 
1.9.3

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