From: Peter Zijlstra <peterz@infradead.org>
To: habanero@linux.vnet.ibm.com
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
Avi Kivity <avi@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Ingo Molnar <mingo@redhat.com>, Rik van Riel <riel@redhat.com>,
KVM <kvm@vger.kernel.org>, chegu vinod <chegu_vinod@hp.com>,
LKML <linux-kernel@vger.kernel.org>, X86 <x86@kernel.org>,
Gleb Natapov <gleb@redhat.com>,
Srivatsa Vaddagiri <srivatsa.vaddagiri@gmail.com>
Subject: Re: [RFC][PATCH] Improving directed yield scalability for PLE handler
Date: Mon, 10 Sep 2012 22:19:20 +0200 [thread overview]
Message-ID: <1347308360.2124.59.camel@twins> (raw)
In-Reply-To: <1347307972.7332.78.camel@oc2024037011.ibm.com>
On Mon, 2012-09-10 at 15:12 -0500, Andrew Theurer wrote:
> + /*
> + * if the target task is not running, then only yield if the
> + * current task is in guest mode
> + */
> + if (!(p_rq->curr->flags & PF_VCPU))
> + goto out_irq;
This would make yield_to() only ever work on KVM, not that I mind this
too much, its a horrid thing and making it less useful for (ab)use is a
good thing, still this probably wants mention somewhere :-)
next prev parent reply other threads:[~2012-09-10 20:19 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-18 13:37 [PATCH RFC V5 0/3] kvm: Improving directed yield in PLE handler Raghavendra K T
2012-07-18 13:37 ` [PATCH RFC V5 1/3] kvm/config: Add config to support ple or cpu relax optimzation Raghavendra K T
2012-07-18 13:37 ` [PATCH RFC V5 2/3] kvm: Note down when cpu relax intercepted or pause loop exited Raghavendra K T
2012-07-18 13:38 ` [PATCH RFC V5 3/3] kvm: Choose better candidate for directed yield Raghavendra K T
2012-07-18 14:39 ` Raghavendra K T
2012-07-19 9:47 ` [RESEND PATCH " Raghavendra K T
2012-07-20 17:36 ` [PATCH RFC V5 0/3] kvm: Improving directed yield in PLE handler Marcelo Tosatti
2012-07-22 12:34 ` Raghavendra K T
2012-07-22 12:43 ` Avi Kivity
2012-07-23 7:35 ` Christian Borntraeger
2012-07-22 17:58 ` Rik van Riel
2012-07-23 10:03 ` Avi Kivity
2012-09-07 13:11 ` [RFC][PATCH] Improving directed yield scalability for " Andrew Theurer
2012-09-07 18:06 ` Raghavendra K T
2012-09-07 19:42 ` Andrew Theurer
2012-09-08 8:43 ` Srikar Dronamraju
2012-09-10 13:16 ` Andrew Theurer
2012-09-10 16:03 ` Peter Zijlstra
2012-09-10 16:56 ` Srikar Dronamraju
2012-09-10 17:12 ` Peter Zijlstra
2012-09-10 19:10 ` Raghavendra K T
2012-09-10 20:12 ` Andrew Theurer
2012-09-10 20:19 ` Peter Zijlstra [this message]
2012-09-10 20:31 ` Rik van Riel
2012-09-11 6:08 ` Raghavendra K T
2012-09-11 12:48 ` Andrew Theurer
2012-09-11 18:27 ` Andrew Theurer
2012-09-13 11:48 ` Raghavendra K T
2012-09-13 21:30 ` Andrew Theurer
2012-09-14 17:10 ` Andrew Jones
2012-09-15 16:08 ` Raghavendra K T
2012-09-17 13:48 ` Andrew Jones
2012-09-14 20:34 ` Konrad Rzeszutek Wilk
2012-09-17 8:02 ` Andrew Jones
2012-09-16 8:55 ` Avi Kivity
2012-09-17 8:10 ` Andrew Jones
2012-09-18 3:03 ` Andrew Theurer
2012-09-19 13:39 ` Avi Kivity
2012-09-13 12:13 ` Avi Kivity
2012-09-11 7:04 ` Srikar Dronamraju
2012-09-10 14:43 ` Raghavendra K T
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