Re: [PATCH] hotplug: Optimize {get,put}_online_cpus()

[Peter Zijlstra]

On Mon, Sep 23, 2013 at 11:59:08AM -0400, Steven Rostedt wrote:
> On Mon, 23 Sep 2013 17:22:23 +0200
> Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> 
> > Still no point in using srcu for this; preempt_disable +
> > synchronize_sched() is similar and much faster -- its the rcu_sched
> > equivalent of what you propose.
> 
> To be honest, I sent this out last week and it somehow got trashed by
> my laptop and connecting to my smtp server. Where the last version of
> your patch still had the memory barrier ;-)

Ah, ok, yes in that case things start to make sense again.
--
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/