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Date: Mon, 24 Sep 2012 17:10:01 +0530 From: Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com> To: Peter Zijlstra <peterz@...radead.org> CC: "H. Peter Anvin" <hpa@...or.com>, Avi Kivity <avi@...hat.com>, Ingo Molnar <mingo@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>, Rik van Riel <riel@...hat.com>, Srikar <srikar@...ux.vnet.ibm.com>, "Nikunj A. Dadhania" <nikunj@...ux.vnet.ibm.com>, KVM <kvm@...r.kernel.org>, Jiannan Ouyang <ouyang@...pitt.edu>, chegu vinod <chegu_vinod@...com>, "Andrew M. Theurer" <habanero@...ux.vnet.ibm.com>, LKML <linux-kernel@...r.kernel.org>, Srivatsa Vaddagiri <srivatsa.vaddagiri@...il.com>, Gleb Natapov <gleb@...hat.com> Subject: Re: [PATCH RFC 1/2] kvm: Handle undercommitted guest case in PLE handler On 09/24/2012 05:03 PM, Peter Zijlstra wrote: > On Fri, 2012-09-21 at 17:30 +0530, Raghavendra K T wrote: >> +unsigned long rq_nr_running(void) >> +{ >> + return this_rq()->nr_running; >> +} >> +EXPORT_SYMBOL(rq_nr_running); > > Uhm,.. no, that's a horrible thing to export. > True.. I had the same fear :). Other options I thought were something like nr_running()/num_online_cpus, this_cpu_load(), etc.. Could you please let me know, if we can rely some good metric to say, system is not overcommitted/overcommitted? -- 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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