From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>
Cc: paulmck@linux.vnet.ibm.com, Gautham R Shenoy <ego@in.ibm.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
dipankar@in.ibm.com
Subject: Re: [PATCH] cpuhotplug: introduce try_get_online_cpus() take 2
Date: Mon, 08 Jun 2009 10:36:23 +0800 [thread overview]
Message-ID: <4A2C7927.30709@cn.fujitsu.com> (raw)
In-Reply-To: <20090605153714.GB6778@linux.vnet.ibm.com>
Paul E. McKenney wrote:
>> Add CC to Peter Zijlstra <peterz@infradead.org>
>>
>> (This patch is against mainline but not for inclusion, it will adapted
>> against -mm when request)
>>
>> Requst For Comments and Reviewing Hungeringly.
>>
>> - Lockless for get_online_cpus()'s fast path
>> - Introduce try_get_online_cpus()
>
> One question for Gautham Shenoy -- are non-atomic CPU-hotplug notifiers
> always invoked from the task that did the cpu_hotplug_begin()?
>
> If so, well and good. If not, then it would not be possible to
> expedite RCU grace periods from within CPU-hotplug notifiers.
>
> Thanx, Paul
>
I have no proper machine for several days to test the next version
of this patch, so it is still being delayed a while.
Lai.
next prev parent reply other threads:[~2009-06-08 2:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 8:29 [PATCH 1/2] cpuhotplug: use rw_semaphore for cpu_hotplug Lai Jiangshan
2009-05-29 20:23 ` Andrew Morton
2009-05-29 21:07 ` Oleg Nesterov
2009-05-29 21:17 ` Oleg Nesterov
2009-06-01 1:04 ` Lai Jiangshan
2009-06-01 0:52 ` Lai Jiangshan
2009-06-01 2:22 ` Lai Jiangshan
2009-05-30 1:53 ` Paul E. McKenney
2009-05-30 4:37 ` Gautham R Shenoy
2009-06-04 6:58 ` [PATCH] cpuhotplug: introduce try_get_online_cpus() take 2 Lai Jiangshan
2009-06-04 20:49 ` Oleg Nesterov
2009-06-05 1:32 ` Lai Jiangshan
2009-06-05 2:14 ` Oleg Nesterov
2009-06-05 15:37 ` Paul E. McKenney
2009-06-08 2:36 ` Lai Jiangshan [this message]
2009-06-08 4:19 ` Gautham R Shenoy
2009-06-08 14:25 ` Paul E. McKenney
2009-06-09 12:07 ` [PATCH -mm] cpuhotplug: introduce try_get_online_cpus() take 3 Lai Jiangshan
2009-06-09 19:34 ` Andrew Morton
2009-06-09 23:47 ` Paul E. McKenney
2009-06-10 1:13 ` [PATCH -mm resend] " Lai Jiangshan
2009-06-10 1:42 ` Andrew Morton
2009-06-11 8:41 ` Lai Jiangshan
2009-06-11 18:50 ` Paul E. McKenney
2009-06-15 4:04 ` Gautham R Shenoy
2009-06-10 0:57 ` [PATCH -mm] " Lai Jiangshan
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