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Date: Mon, 6 Jun 2022 22:20:56 +0000 From: Yosry Ahmed <yosryahmed@...gle.com> To: Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>, Zefan Li <lizefan.x@...edance.com>, Marc Zyngier <maz@...nel.org>, James Morse <james.morse@....com>, Alexandru Elisei <alexandru.elisei@....com>, Suzuki K Poulose <suzuki.poulose@....com>, Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>, Vitaly Kuznetsov <vkuznets@...hat.com>, Wanpeng Li <wanpengli@...cent.com>, Jim Mattson <jmattson@...gle.com>, Joerg Roedel <joro@...tes.org>, Andrew Morton <akpm@...ux-foundation.org>, Michal Hocko <mhocko@...nel.org>, Roman Gushchin <roman.gushchin@...ux.dev>, Shakeel Butt <shakeelb@...gle.com>, Oliver Upton <oupton@...gle.com> Cc: cgroups@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu, kvm@...r.kernel.org, linux-mm@...ck.org, Yosry Ahmed <yosryahmed@...gle.com> Subject: [PATCH v5 2/4] KVM: mmu: add a helper to account memory used by KVM MMU. Add a helper to account pages used by KVM for page tables in secondary pagetable stats. This function will be used by subsequent patches in different archs. Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com> --- include/linux/kvm_host.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 883e86ec8e8c4..645585f3a4bed 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -2246,6 +2246,15 @@ static inline void kvm_handle_signal_exit(struct kvm_vcpu *vcpu) } #endif /* CONFIG_KVM_XFER_TO_GUEST_WORK */ +/* + * If nr > 1, we assume virt is the address of the first page of a block of + * pages that were allocated together (i.e accounted together). + */ +static inline void kvm_account_pgtable_pages(void *virt, int nr) +{ + mod_lruvec_page_state(virt_to_page(virt), NR_SECONDARY_PAGETABLE, nr); +} + /* * This defines how many reserved entries we want to keep before we * kick the vcpu to the userspace to avoid dirty ring full. This -- 2.36.1.255.ge46751e96f-goog
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