KVM: Add stat counter for hypercalls

Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a063f449a12e..15bba5d37931 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -72,6 +72,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
         { "irq_window", VCPU_STAT(irq_window_exits) },
         { "halt_exits", VCPU_STAT(halt_exits) },
         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
+        { "hypercalls", VCPU_STAT(hypercalls) },
         { "request_irq", VCPU_STAT(request_irq_exits) },
         { "irq_exits", VCPU_STAT(irq_exits) },
         { "host_state_reload", VCPU_STAT(host_state_reload) },
@@ -2405,6 +2406,7 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
         }
         vcpu->arch.regs[VCPU_REGS_RAX] = ret;
         kvm_x86_ops->decache_regs(vcpu);
+        ++vcpu->stat.hypercalls;
         return 0;
 }
 EXPORT_SYMBOL_GPL(kvm_emulate_hypercall);
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 90c80fd830fc..935ffa4db9f4 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -328,6 +328,7 @@ struct kvm_vcpu_stat {
         u32 fpu_reload;
         u32 insn_emulation;
         u32 insn_emulation_fail;
+        u32 hypercalls;
 };
 
 struct descriptor_table {