| Message ID | 20130304180227.31281.96284.sendpatchset@codeblue.in.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 3/4/2013 10:02 AM, Raghavendra K T wrote: > From: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> > > This helps in filtering out the eligible candidates further and > thus potentially helps in quickly allowing preempted lockholders to run. > Note that if a vcpu was spinning during preemption we filter them > by checking whether they are preempted due to pause loop exit. > > Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> > --- > virt/kvm/kvm_main.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c > index 83a804c..60114e1 100644 > --- a/virt/kvm/kvm_main.c > +++ b/virt/kvm/kvm_main.c > @@ -1790,6 +1790,8 @@ void kvm_vcpu_on_spin(struct kvm_vcpu *me) > continue; > } else if (pass && i > last_boosted_vcpu) > break; > + if (!ACCESS_ONCE(vcpu->preempted)) > + continue; > if (vcpu == me) > continue; > if (waitqueue_active(&vcpu->wq)) > > . > Reviewed-by: Chegu Vinod <chegu_vinod@hp.com> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 83a804c..60114e1 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1790,6 +1790,8 @@ void kvm_vcpu_on_spin(struct kvm_vcpu *me) continue; } else if (pass && i > last_boosted_vcpu) break; + if (!ACCESS_ONCE(vcpu->preempted)) + continue; if (vcpu == me) continue; if (waitqueue_active(&vcpu->wq))