KVM: trace kvm_halt_poll_ns grow/shrink

[deliverable/linux.git] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8ab49cfc024eadced69b8040d708e53bcfc3c05a..4662a8877f6c7a06b81803d417e52120a009a15b 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1918,8 +1918,9 @@ EXPORT_SYMBOL_GPL(kvm_vcpu_mark_page_dirty);
 
 static void grow_halt_poll_ns(struct kvm_vcpu *vcpu)
 {
-       int val = vcpu->halt_poll_ns;
+       int old, val;
 
+       old = val = vcpu->halt_poll_ns;
        /* 10us base */
        if (val == 0 && halt_poll_ns_grow)
                val = 10000;
@@ -1927,18 +1928,21 @@ static void grow_halt_poll_ns(struct kvm_vcpu *vcpu)
                val *= halt_poll_ns_grow;
 
        vcpu->halt_poll_ns = val;
+       trace_kvm_halt_poll_ns_grow(vcpu->vcpu_id, val, old);
 }
 
 static void shrink_halt_poll_ns(struct kvm_vcpu *vcpu)
 {
-       int val = vcpu->halt_poll_ns;
+       int old, val;
 
+       old = val = vcpu->halt_poll_ns;
        if (halt_poll_ns_shrink == 0)
                val = 0;
        else
                val /= halt_poll_ns_shrink;
 
        vcpu->halt_poll_ns = val;
+       trace_kvm_halt_poll_ns_shrink(vcpu->vcpu_id, val, old);
 }
 
 static int kvm_vcpu_check_block(struct kvm_vcpu *vcpu)