From 3cc4e148b96263313e3dce926eae569c942bb74e Mon Sep 17 00:00:00 2001 From: Jing Zhang Date: Tue, 17 Aug 2021 00:26:39 +0000 Subject: KVM: stats: Add VM stat for remote tlb flush requests Add a new stat that counts the number of times a remote TLB flush is requested, regardless of whether it kicks vCPUs out of guest mode. This allows us to look at how often flushes are initiated. Unlike remote_tlb_flush, this one applies to ARM's instruction-set-based TLB flush implementation, so apply it there too. Original-by: David Matlack Signed-off-by: Jing Zhang Message-Id: <20210817002639.3856694-1-jingzhangos@google.com> Signed-off-by: Paolo Bonzini --- include/linux/kvm_host.h | 3 ++- include/linux/kvm_types.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e4d712e9f760..c177789a8542 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1444,7 +1444,8 @@ struct _kvm_stats_desc { KVM_STATS_BASE_POW10, -9, sz) #define KVM_GENERIC_VM_STATS() \ - STATS_DESC_COUNTER(VM_GENERIC, remote_tlb_flush) + STATS_DESC_COUNTER(VM_GENERIC, remote_tlb_flush), \ + STATS_DESC_COUNTER(VM_GENERIC, remote_tlb_flush_requests) #define KVM_GENERIC_VCPU_STATS() \ STATS_DESC_COUNTER(VCPU_GENERIC, halt_successful_poll), \ diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h index de7fb5f364d8..2237abb93ccd 100644 --- a/include/linux/kvm_types.h +++ b/include/linux/kvm_types.h @@ -80,6 +80,7 @@ struct kvm_mmu_memory_cache { struct kvm_vm_stat_generic { u64 remote_tlb_flush; + u64 remote_tlb_flush_requests; }; struct kvm_vcpu_stat_generic { -- cgit v1.2.3