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Date: Wed, 22 Dec 2010 21:28:04 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Shaohui Zheng <shaohui.zheng@...ux.intel.com> Cc: shaohui.zheng@...el.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, haicheng.li@...ux.intel.com, lethal@...ux-sh.org, ak@...ux.intel.com, rientjes@...gle.com, dave@...ux.vnet.ibm.com, gregkh@...e.de, Ingo Molnar <mingo@...e.hu>, Len Brown <len.brown@...el.com>, Yinghai Lu <Yinghai.Lu@....COM>, Tejun Heo <tj@...nel.org>, Haicheng Li <haicheng.li@...el.com> Subject: Re: [5/7, v9] NUMA Hotplug Emulator: Support cpu probe/release in x86_64 On Thu, 23 Dec 2010 10:24:28 +0800 Shaohui Zheng <shaohui.zheng@...ux.intel.com> wrote: > > > > Why *does* it check `count' and then not use it? > > > > it is a tricky thing. When I debug it under a Virtual Machine, If I do a cpu > probe via sysfs cpu/probe interface, The function arch_cpu_probe will be called > __three__ times, but only one call is valid, so I add a check on `count` to > ignore the invalid calls. hm, why does it get called three times? Is that something which can/should be fixed in callers rather than in the callee? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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