From: Yosry Ahmed <yosryahmed@google.com>
To: Huacai Chen <chenhuacai@kernel.org>,
Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>,
Joerg Roedel <joro@8bytes.org>
Cc: mizhang@google.com, David Matlack <dmatlack@google.com>,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-mips@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Shakeel Butt <shakeelb@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Yosry Ahmed <yosryahmed@google.com>
Subject: [PATCH v2 1/5] KVM: mm: add a helper to account page table pages used by KVM.
Date: Mon, 4 Apr 2022 23:41:50 +0000 [thread overview]
Message-ID: <20220404234154.1251388-2-yosryahmed@google.com> (raw)
In-Reply-To: <20220404234154.1251388-1-yosryahmed@google.com>
Add a helper to account pages used by KVM for page tables as pagetable
stats. This function will be used by subsequent patches in different
archs.
Signed-off-by: Yosry Ahmed <yosryahmed@google.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 252ee4a61b58..ca46b68e7086 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -2221,6 +2221,15 @@ 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_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
--
2.35.1.1094.g7c7d902a7c-goog
next prev parent reply other threads:[~2022-04-04 23:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-04 23:41 [PATCH v2 0/5] KVM: mm: count KVM page table pages in pagetable stats Yosry Ahmed
2022-04-04 23:41 ` Yosry Ahmed [this message]
2022-04-04 23:41 ` [PATCH v2 2/5] KVM: x86: " Yosry Ahmed
2022-04-04 23:41 ` [PATCH v2 3/5] KVM: arm64: " Yosry Ahmed
2022-04-04 23:41 ` [PATCH v2 4/5] KVM: riscv: " Yosry Ahmed
2022-04-04 23:41 ` [PATCH v2 5/5] KVM: mips: " Yosry Ahmed
2022-04-05 18:44 ` [PATCH v2 0/5] KVM: " Sean Christopherson
2022-04-05 18:50 ` Yosry Ahmed
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