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| author |   Jing Zhang <jingzhangos@google.com> | 2021-08-17 00:26:39 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-09-06 06:30:45 -0400 |
| commit | 3cc4e148b96263313e3dce926eae569c942bb74e (patch) | |
| tree | 5fad27d657f971485b97da0ee0c3970e996b539e /arch/arm64 | |
| parent | KVM: Remove unnecessary export of kvm_{inc,dec}_notifier_count() (diff) | |
| download | linux-dev-3cc4e148b96263313e3dce926eae569c942bb74e.tar.xz linux-dev-3cc4e148b96263313e3dce926eae569c942bb74e.zip | |
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 <dmatlack@google.com>
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210817002639.3856694-1-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kvm/mmu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 0625bf2353c2..f5bb235bbb59 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -80,6 +80,7 @@ static bool memslot_is_logging(struct kvm_memory_slot *memslot) */ void kvm_flush_remote_tlbs(struct kvm *kvm) { + ++kvm->stat.generic.remote_tlb_flush_requests; kvm_call_hyp(__kvm_tlb_flush_vmid, &kvm->arch.mmu); } |