[PATCH v3 3/5] KVM: x86: add request_exits debug counter

[Radim Krčmář]

We are still interested in the amount of exits userspace requested and
signal_exits doesn't cover that anymore.

Signed-off-by: Radim Krčmář <rkrc...@redhat.com>
---
 v2: move request_exits debug counter patch right after introduction of
     KVM_REQ_EXIT

 arch/x86/include/asm/kvm_host.h | 1 +
 arch/x86/kvm/x86.c              | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 09acaa64ef8e..95c05a3d02d4 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -729,6 +729,7 @@ struct kvm_vcpu_stat {
        u32 hypercalls;
        u32 irq_injections;
        u32 nmi_injections;
+       u32 request_exits;
 };
 
 struct x86_instruction_info;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c3df7733af09..37db1b32684a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -145,6 +145,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
        { "io_exits", VCPU_STAT(io_exits) },
        { "mmio_exits", VCPU_STAT(mmio_exits) },
        { "signal_exits", VCPU_STAT(signal_exits) },
+       { "request_exits", VCPU_STAT(request_exits) },
        { "irq_window", VCPU_STAT(irq_window_exits) },
        { "nmi_window", VCPU_STAT(nmi_window_exits) },
        { "halt_exits", VCPU_STAT(halt_exits) },
@@ -6551,6 +6552,7 @@ static int vcpu_run(struct kvm_vcpu *vcpu)
                if (unlikely(kvm_has_request(KVM_REQ_EXIT, vcpu))) {
                        r = 0;
                        vcpu->run->exit_reason = KVM_EXIT_REQUEST;
+                       ++vcpu->stat.request_exits;
                        break;
                }
                if (need_resched()) {
-- 
2.5.0

--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html