From: Peter Zijlstra <peterz@infradead.org>
To: "Liu, Chuansheng" <chuansheng.liu@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Yanmin Zhang <yanmin_zhang@linux.intel.com>,
"tglx@linutronix.de" <tglx@linutronix.de>
Subject: Re: [PATCH] Fix the race between smp_call_function and CPU booting
Date: Mon, 12 Mar 2012 10:58:27 +0100 [thread overview]
Message-ID: <1331546307.18960.26.camel@twins> (raw)
In-Reply-To: <27240C0AC20F114CBF8149A2696CBE4A053BE8@SHSMSX101.ccr.corp.intel.com>
On Mon, 2012-03-12 at 09:27 +0000, Liu, Chuansheng wrote:
> The solution is just to send smp call to active cpus instead of online
> cpus.
BTW, that solution is broken because !active cpus can still be online
and actually running stuff, so sending IPIs to them is perfectly fine
and actually required.
next prev parent reply other threads:[~2012-03-12 17:25 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-12 9:27 [PATCH] Fix the race between smp_call_function and CPU booting Liu, Chuansheng
2012-03-12 9:32 ` Peter Zijlstra
2012-03-13 6:43 ` Liu, Chuansheng
2012-03-12 9:58 ` Peter Zijlstra [this message]
2012-03-13 6:46 ` Liu, Chuansheng
2012-03-13 15:57 ` Peter Zijlstra
2012-03-14 6:27 ` Liu, Chuansheng
2012-03-14 9:43 ` Peter Zijlstra
2012-03-15 0:11 ` Liu, Chuansheng
2012-03-15 10:46 ` Peter Zijlstra
2012-03-16 6:24 ` Liu, Chuansheng
2012-03-16 9:49 ` Peter Zijlstra
2012-03-19 0:58 ` Liu, Chuansheng
2012-03-19 10:03 ` Peter Zijlstra
2012-03-20 0:22 ` Liu, Chuansheng
2012-03-20 12:17 ` Peter Zijlstra
2012-03-20 13:14 ` Srivatsa S. Bhat
2012-03-20 13:41 ` Peter Zijlstra
2012-03-20 15:02 ` Srivatsa S. Bhat
2012-03-21 5:59 ` Liu, Chuansheng
2012-03-21 9:12 ` Peter Zijlstra
2012-03-21 12:25 ` Peter Zijlstra
2012-03-22 0:59 ` Liu, Chuansheng
2012-03-23 10:25 ` Peter Zijlstra
2012-03-23 11:32 ` Liu, Chuansheng
2012-03-23 12:02 ` Peter Zijlstra
2012-03-23 12:06 ` Liu, Chuansheng
2012-03-23 12:13 ` Peter Zijlstra
2012-03-23 12:21 ` Liu, Chuansheng
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