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authorRaghavendra K T <raghavendra.kt@linux.vnet.ibm.com>2013-03-04 22:02:07 +0400
committerGleb Natapov <gleb@redhat.com>2013-03-11 13:37:08 +0400
commit3a08a8f9f0936e182d387afd85fdc5d303381521 (patch)
tree092f3ba314b1822b84fa24af6f211c9388bc566d /include/linux/kvm_host.h
parent5da596078f915a62e39a20e582308eab91b88c9a (diff)
downloadlinux-3a08a8f9f0936e182d387afd85fdc5d303381521.tar.xz
kvm: Record the preemption status of vcpus using preempt notifiers
Note that we mark as preempted only when vcpu's task state was Running during preemption. Thanks Jiannan, Avi for preemption notifier ideas. Thanks Gleb, PeterZ for their precious suggestions. Thanks Srikar for an idea on avoiding rcu lock while checking task state that improved overcommit numbers. 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>
Diffstat (limited to 'include/linux/kvm_host.h')
-rw-r--r--include/linux/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9fa13ebc3381..0f4941a9c9c8 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -253,6 +253,7 @@ struct kvm_vcpu {
bool dy_eligible;
} spin_loop;
#endif
+ bool preempted;
struct kvm_vcpu_arch arch;
};