KVM: MMU: support disable/enable mmu audit dynamicly
Add a r/w module parameter named 'mmu_audit', it can control audit
enable/disable:
enable:
echo 1 > /sys/module/kvm/parameters/mmu_audit
disable:
echo 0 > /sys/module/kvm/parameters/mmu_audit
This patch not change the logic
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h
index 3aab0f0..b60b4fd 100644
--- a/arch/x86/kvm/mmutrace.h
+++ b/arch/x86/kvm/mmutrace.h
@@ -195,6 +195,25 @@
TP_ARGS(sp)
);
+
+TRACE_EVENT(
+ kvm_mmu_audit,
+ TP_PROTO(struct kvm_vcpu *vcpu, int audit_point),
+ TP_ARGS(vcpu, audit_point),
+
+ TP_STRUCT__entry(
+ __field(struct kvm_vcpu *, vcpu)
+ __field(int, audit_point)
+ ),
+
+ TP_fast_assign(
+ __entry->vcpu = vcpu;
+ __entry->audit_point = audit_point;
+ ),
+
+ TP_printk("vcpu:%d %s", __entry->vcpu->cpu,
+ audit_point_name[__entry->audit_point])
+);
#endif /* _TRACE_KVMMMU_H */
#undef TRACE_INCLUDE_PATH