Re: [PATCH v2 1/2] sched: Add cond_resched_rcu_lock() helper

To: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH v2 1/2] sched: Add cond_resched_rcu_lock() helper
Cc: Julian Anastasov <ja@xxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>, Eric Dumazet <eric.dumazet@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, lvs-devel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>, Dipankar Sarma <dipankar@xxxxxxxxxx>
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu, 2 May 2013 09:27:43 +0200
On Wed, May 01, 2013 at 07:32:58AM -0700, Paul E. McKenney wrote:
> Here is how to detect this:
>       static void inline cond_resched_rcu_lock(void)
>       {
>               rcu_read_unlock();
>               WARN_ON_ONCE(rcu_read_lock_held());
>       #ifndef CONFIG_PREEMPT_RCU
>               cond_resched();
>       #endif
>               rcu_read_lock();
>       }

The __might_sleep(__FILE__, __LINE__, PREEMPT_RCU_OFFSET) I posted in the other
email just now should deal with this.
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