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KVM: x86: add VCPU stat for KVM_REQ_EVENT processing

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This statistic can be useful to estimate the cost of an IRQ injection
scenario, by comparing it with irq_injections.  For example the stat
shows that sti;hlt triggers more KVM_REQ_EVENT than sti;nop.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2016-12-17 16:05:19 +01:00
committed by Radim Krčmář
parent 0f89b207b0
commit 0f1e261ead
2 changed files with 3 additions and 0 deletions
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arch/x86/include/asm/kvm_host.h
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@@ -861,6 +861,7 @@ struct kvm_vcpu_stat {
u64 hypercalls;
u64 irq_injections;
u64 nmi_injections;
u64 req_event;
};
struct x86_instruction_info;