From: Eric Dumazet <eric.dumazet@gmail.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: David Miller <davem@davemloft.net>,
kaber@trash.net, netdev@vger.kernel.org,
remi.denis-courmont@nokia.com
Subject: Re: [PATCH net-next-2.6] net: add rcu protection to netdev->ifalias
Date: Wed, 18 May 2011 06:35:11 +0200 [thread overview]
Message-ID: <1305693312.6741.58.camel@edumazet-laptop> (raw)
In-Reply-To: <1305671956.6741.25.camel@edumazet-laptop>
Le mercredi 18 mai 2011 à 00:39 +0200, Eric Dumazet a écrit :
> I dont know, if it happens to be too hard, we'll just stick again rtnl
> for "ip link show" ;)
>
>
I believe I'll take this path, its a bit too hard for the moment, and
need several preliminary steps :
It is making sense trying to get rid of rtnl_trylock() hack with more
fine grained locks, and thus lower pressure on RTNL.
Some synchronize_rcu() calls are done whith RTNL held : All processes
hitting rtnl_trylock() have to enter a busy loop, restarting syscall as
long as the RTNL owner is blocked in synchronize_rcu().
prev parent reply other threads:[~2011-05-18 4:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-28 8:56 [PATCH net-next-2.6] net: dont hold rtnl mutex during netlink dump callbacks Eric Dumazet
2011-04-28 15:40 ` Stephen Hemminger
2011-04-28 15:43 ` Stephen Hemminger
2011-04-28 15:53 ` Eric Dumazet
2011-05-02 22:27 ` David Miller
2011-05-17 22:18 ` [PATCH net-next-2.6] net: add rcu protection to netdev->ifalias Eric Dumazet
2011-05-17 22:25 ` Stephen Hemminger
2011-05-17 22:39 ` Eric Dumazet
2011-05-18 4:35 ` Eric Dumazet [this message]
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