From: Yinghai Lu <yinghai@kernel.org>
To: paulmck@linux.vnet.ibm.com
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
tglx@linutronix.de, mingo@elte.hu
Subject: Re: [tip:core/rcu] Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"
Date: Fri, 27 May 2011 21:03:31 -0700 [thread overview]
Message-ID: <4DE07413.5050408@kernel.org> (raw)
In-Reply-To: <20110528010448.GA21955@linux.vnet.ibm.com>
On 05/27/2011 06:04 PM, Paul E. McKenney wrote:
>
> And, after having repeatedly shot myself in the foot trying to make
> an all-singing all-dancing RCU grace-period latency measurement tool,
> I fell back to simply measuring the RCU grace-period latency during
> the time that memory_dev_init() is running. This assumes that the
> grace periods are started using synchronize_rcu() -- if they are instead
> being started using call_rcu(), I can adapt to that as well.
>
[ 31.635137] cpu_dev_init done
[ 31.635320] Starting RCU latency diagnostics
[ 71.605662] Ending RCU latency diagnostics
[ 71.605924] memory_dev_init done
Thanks
Yinghai
next prev parent reply other threads:[~2011-05-28 4:04 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tip-80d02085d99039b3b7f3a73c8896226b0cb1ba07@git.kernel.org>
2011-05-20 21:04 ` [tip:core/rcu] Revert "rcu: Decrease memory-barrier usage based on semi-formal proof" Yinghai Lu
2011-05-20 22:42 ` Paul E. McKenney
2011-05-20 23:09 ` Yinghai Lu
2011-05-20 23:14 ` Paul E. McKenney
2011-05-20 23:16 ` Yinghai Lu
2011-05-20 23:49 ` Paul E. McKenney
2011-05-21 0:02 ` Yinghai Lu
2011-05-21 13:18 ` Paul E. McKenney
2011-05-21 14:08 ` Paul E. McKenney
2011-05-23 20:14 ` Yinghai Lu
2011-05-23 21:25 ` Paul E. McKenney
2011-05-23 22:01 ` Yinghai Lu
2011-05-23 22:55 ` Yinghai Lu
2011-05-23 22:58 ` Yinghai Lu
2011-05-24 1:18 ` Paul E. McKenney
2011-05-24 1:26 ` Yinghai Lu
2011-05-24 1:35 ` Paul E. McKenney
2011-05-24 21:23 ` Yinghai Lu
2011-05-25 0:05 ` Paul E. McKenney
2011-05-25 0:13 ` Yinghai Lu
2011-05-25 4:46 ` Paul E. McKenney
2011-05-25 7:24 ` Ingo Molnar
2011-05-25 20:48 ` Paul E. McKenney
2011-05-25 7:18 ` Ingo Molnar
2011-05-25 0:16 ` Paul E. McKenney
2011-05-25 0:10 ` Yinghai Lu
2011-05-25 4:52 ` Paul E. McKenney
2011-05-25 7:27 ` Ingo Molnar
2011-05-25 20:47 ` Paul E. McKenney
2011-05-25 20:52 ` Ingo Molnar
2011-05-25 22:15 ` Yinghai Lu
2011-05-25 22:34 ` Paul E. McKenney
2011-05-25 22:49 ` Yinghai Lu
2011-05-26 1:13 ` Paul E. McKenney
2011-05-26 1:30 ` Paul E. McKenney
2011-05-26 6:13 ` Ingo Molnar
2011-05-26 14:25 ` Paul E. McKenney
2011-05-26 17:43 ` Paul E. McKenney
2011-05-26 20:26 ` Ingo Molnar
2011-05-26 15:08 ` Yinghai Lu
2011-05-26 16:28 ` Paul E. McKenney
2011-05-28 1:04 ` Paul E. McKenney
2011-05-28 4:03 ` Yinghai Lu [this message]
2011-05-28 6:38 ` Paul E. McKenney
2011-05-24 1:12 ` Paul E. McKenney
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