linux-kernel - Re: [PATCH 2/2] ipvs: Use cond_resched_rcu_lock() helper when dumping connections

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Message-ID: <20130427071814.GA31700@dyad.programming.kicks-ass.net>
Date:	Sat, 27 Apr 2013 09:18:15 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Simon Horman <horms@...ge.net.au>,
	Julian Anastasov <ja@....bg>, Ingo Molnar <mingo@...hat.com>,
	lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Dipankar Sarma <dipankar@...ibm.com>, dhaval.giani@...il.com
Subject: Re: [PATCH 2/2] ipvs: Use cond_resched_rcu_lock() helper when
 dumping connections

> In the worst case, I
> can fire up a prio 99 kthread on each CPU and send that kthread a
> wakeup from RCU's rcu_gp_fqs() code.

You just know that's going to be _so_ popular ;-)
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