user/sven/linux.git/include/net/phonet/pn_dev.h, branch v4.13.7Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.13.72011-05-02T22:26:28Znet: dont hold rtnl mutex during netlink dump callbacks2011-05-02T22:26:28ZEric Dumazeteric.dumazet@gmail.com2011-04-27T22:56:07Zurn:sha1:e67f88dd12f610da98ca838822f2c9b4e7c6100e
Four years ago, Patrick made a change to hold rtnl mutex during netlink
dump callbacks.
I believe it was a wrong move. This slows down concurrent dumps, making
good old /proc/net/ files faster than rtnetlink in some situations.
This occurred to me because one "ip link show dev ..." was _very_ slow
on a workload adding/removing network devices in background.
All dump callbacks are able to use RCU locking now, so this patch does
roughly a revert of commits :
1c2d670f366 : [RTNETLINK]: Hold rtnl_mutex during netlink dump callbacks
6313c1e0992 : [RTNETLINK]: Remove unnecessary locking in dump callbacks
This let writers fight for rtnl mutex and readers going full speed.
It also takes care of phonet : phonet_route_get() is now called from rcu
read section. I renamed it to phonet_route_get_rcu()
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: list subscribed resources via proc_fs2010-09-16T04:31:33ZRémi Denis-Courmontremi.denis-courmont@nokia.com2010-09-15T12:30:14Zurn:sha1:507215f8d04f9e61f38c975e61d93bcafd30815f
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
phonet: use call_rcu for phonet device free2010-06-09T23:14:25ZJiri Pirkojpirko@redhat.com2010-06-07T03:27:39Zurn:sha1:88e7594a9775e54dcd421cb246406dce62e48bee
Use call_rcu rather than synchronize_rcu.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: convert devices list to RCU2009-11-18T18:08:26ZRémi Denis-Courmontremi.denis-courmont@nokia.com2009-11-18T18:08:26Zurn:sha1:eeb74a9d45f781ec6f47b9e0a75a6a427b53f165
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: routing table Netlink interface2009-10-14T22:04:17ZRémi Denis-Courmontremi.denis-courmont@nokia.com2009-10-14T00:48:29Zurn:sha1:f062f41d06575744b9eaf725eef8a5d3b5f5b7ca
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: routing table backend2009-10-14T22:04:16ZRémi Denis-Courmontremi.denis-courmont@nokia.com2009-10-14T00:48:28Zurn:sha1:55748ac0468134a89bc55aed6a9691e320caa8a9
The Phonet "universe" only has 64 addresses, so we keep a trivial flat
routing table.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: sockets list through proc_fs2009-07-24T00:58:19ZRémi Denis-Courmontremi.denis-courmont@nokia.com2009-07-21T01:57:57Zurn:sha1:c1dc13e9d0bc35a8d85bf4238c48c1b627d48f35
This provides a list of sockets with their Phonet bind addresses and
some socket debug informations through /proc/net/phonet.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: publicize the Netlink notification function2009-06-25T09:58:15ZRémi Denis-Courmontremi.denis-courmont@nokia.com2009-06-24T01:07:44Zurn:sha1:c7a1a4c80f873d5d6ecd173035bb80eba489f380
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: use per-namespace devices list2009-01-27T05:03:35Zremi.denis-courmont@nokiaremi.denis-courmont@nokia2009-01-23T03:00:30Zurn:sha1:9a3b7a42bb2919a6282a96a5f4abe0f9be36c4b3
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phonet: handle rtnetlink registration failure2009-01-27T05:03:34Zremi.denis-courmont@nokiaremi.denis-courmont@nokia2009-01-23T03:00:28Zurn:sha1:660f706d931d4795d341805e083a8091af74fa88
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>