KVM: MMU: audit: replace mmu audit tracepoint with jump-label

The tracepoint is only used to audit mmu code, it should not be exposed to
user, let us replace it with jump-label.

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 11 insertions, 5 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d737443cdfdb..62f69dbf6b52 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -68,6 +68,12 @@ char *audit_point_name[] = {
         "post sync"
 };
 
+#ifdef CONFIG_KVM_MMU_AUDIT
+static void kvm_mmu_audit(struct kvm_vcpu *vcpu, int point);
+#else
+static void kvm_mmu_audit(struct kvm_vcpu *vcpu, int point) { }
+#endif
+
 #undef MMU_DEBUG
 
 #ifdef MMU_DEBUG
@@ -2852,12 +2858,12 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu)
                 return;
 
         vcpu_clear_mmio_info(vcpu, ~0ul);
-        trace_kvm_mmu_audit(vcpu, AUDIT_PRE_SYNC);
+        kvm_mmu_audit(vcpu, AUDIT_PRE_SYNC);
         if (vcpu->arch.mmu.root_level == PT64_ROOT_LEVEL) {
                 hpa_t root = vcpu->arch.mmu.root_hpa;
                 sp = page_header(root);
                 mmu_sync_children(vcpu, sp);
-                trace_kvm_mmu_audit(vcpu, AUDIT_POST_SYNC);
+                kvm_mmu_audit(vcpu, AUDIT_POST_SYNC);
                 return;
         }
         for (i = 0; i < 4; ++i) {
@@ -2869,7 +2875,7 @@ static void mmu_sync_roots(struct kvm_vcpu *vcpu)
                         mmu_sync_children(vcpu, sp);
                 }
         }
-        trace_kvm_mmu_audit(vcpu, AUDIT_POST_SYNC);
+        kvm_mmu_audit(vcpu, AUDIT_POST_SYNC);
 }
 
 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)
@@ -3667,7 +3673,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
 
         spin_lock(&vcpu->kvm->mmu_lock);
         ++vcpu->kvm->stat.mmu_pte_write;
-        trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
+        kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
 
         mask.cr0_wp = mask.cr4_pae = mask.nxe = 1;
         for_each_gfn_indirect_valid_sp(vcpu->kvm, sp, gfn, node) {
@@ -3700,7 +3706,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
         }
         mmu_pte_write_flush_tlb(vcpu, zap_page, remote_flush, local_flush);
         kvm_mmu_commit_zap_page(vcpu->kvm, &invalid_list);
-        trace_kvm_mmu_audit(vcpu, AUDIT_POST_PTE_WRITE);
+        kvm_mmu_audit(vcpu, AUDIT_POST_PTE_WRITE);
         spin_unlock(&vcpu->kvm->mmu_lock);
 }