From: Rusty Russell <rusty@rustcorp.com.au>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>,
mingo@elte.hu, paulmck@linux.vnet.ibm.com,
linux-kernel@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 2/2] cpuhotplug: introduce try_get_online_cpus()
Date: Mon, 1 Jun 2009 17:01:50 +0930 [thread overview]
Message-ID: <200906011701.51637.rusty@rustcorp.com.au> (raw)
In-Reply-To: <20090529133118.1c7b16c2.akpm@linux-foundation.org>
On Sat, 30 May 2009 06:01:18 am Andrew Morton wrote:
> I do think that we should look at
> alternative (non-trylocky) ways of fixing them.
Speculating: we could add a "keep_cpu()" (FIXME: improve name) which is kind
of like get_cpu() only doesn't disable preemption and only stops *this* cpu
from going down.
Not sure where that gets us, but if someone's going to dig deep into this it
might help.
Thanks,
Rusty.
next prev parent reply other threads:[~2009-06-01 7:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 8:29 [PATCH 2/2] cpuhotplug: introduce try_get_online_cpus() Lai Jiangshan
2009-05-29 20:31 ` Andrew Morton
2009-06-01 2:42 ` Lai Jiangshan
2009-06-01 7:31 ` Rusty Russell [this message]
2009-06-01 16:19 ` Paul E. McKenney
2009-06-04 0:16 ` Paul E. McKenney
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