kvm: Iterate over only vcpus that are preempted
authorRaghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Mon, 4 Mar 2013 18:02:27 +0000 (23:02 +0530)
committerGleb Natapov <gleb@redhat.com>
Mon, 11 Mar 2013 09:37:22 +0000 (11:37 +0200)
commit7bc7ae25b1438bb9fe1f176b951d758789847640
tree47d7e933d79152b9272b101e68bd0ad43c4ec918
parent3a08a8f9f0936e182d387afd85fdc5d303381521
kvm: Iterate over only vcpus that are preempted

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.

Reviewed-by: Chegu Vinod <chegu_vinod@hp.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
virt/kvm/kvm_main.c