Re: lots of brief rcu stalls.

[Eric Dumazet]

On Wed, 2013-12-04 at 16:16 -0800, Paul E. McKenney wrote:
> +	if (rdp->rsp == rcu_state &&
> +	    ULONG_CMP_GE(ACCESS_ONCE(jiffies), rdp->rsp->jiffies_resched)) {
> +		rdp->rsp->jiffies_resched += 5;
> +		resched_cpu(rdp->cpu);
> +	}
> +
>  	return 0;
>  }

jiffies should not need ACCESS_ONCE(), right ?

It is one of the few variables marked with volatile keyword.



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/