From: Yosry Ahmed <yosryahmed@google.com>
To: Tejun Heo <tj@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>,
Zefan Li <lizefan.x@bytedance.com>, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
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>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Shakeel Butt <shakeelb@google.com>,
Oliver Upton <oupton@google.com>
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-mm@kvack.org, Yosry Ahmed <yosryahmed@google.com>
Subject: [PATCH v4 2/4] KVM: mmu: add a helper to account memory used by KVM mmu.
Date: Fri, 29 Apr 2022 20:11:29 +0000 [thread overview]
Message-ID: <20220429201131.3397875-3-yosryahmed@google.com> (raw)
In-Reply-To: <20220429201131.3397875-1-yosryahmed@google.com>
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@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..54cc4634053c 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_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
--
2.36.0.464.gb9c8b46e94-goog
next prev parent reply other threads:[~2022-04-29 20:11 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-29 20:11 [PATCH v4 0/4] KVM: mm: count KVM mmu usage in memory stats Yosry Ahmed
2022-04-29 20:11 ` [PATCH v4 1/4] mm: add NR_SECONDARY_PAGETABLE to count secondary page table uses Yosry Ahmed
2022-05-02 10:01 ` Marc Zyngier
2022-05-02 18:46 ` Yosry Ahmed
2022-05-09 16:38 ` Yosry Ahmed
2022-05-12 20:36 ` Shakeel Butt
2022-05-12 23:07 ` Johannes Weiner
2022-05-12 23:29 ` Sean Christopherson
2022-05-13 15:50 ` Johannes Weiner
2022-05-13 16:12 ` Sean Christopherson
2022-05-13 16:22 ` Yosry Ahmed
2022-05-13 17:13 ` Shakeel Butt
2022-05-20 1:56 ` Yosry Ahmed
2022-05-20 14:39 ` Johannes Weiner
2022-05-24 22:31 ` Yosry Ahmed
2022-05-25 11:56 ` Johannes Weiner
2022-05-26 0:38 ` Sean Christopherson
2022-05-27 18:33 ` Yosry Ahmed
2022-06-03 16:42 ` Johannes Weiner
2022-04-29 20:11 ` Yosry Ahmed [this message]
2022-04-29 20:11 ` [PATCH v4 3/4] KVM: x86/mmu: count KVM mmu usage in secondary pagetable stats Yosry Ahmed
2022-07-22 20:58 ` Mingwei Zhang
2022-07-26 18:03 ` Sean Christopherson
2022-04-29 20:11 ` [PATCH v4 4/4] KVM: arm64/mmu: count KVM s2 " Yosry Ahmed
2022-05-02 7:24 ` Oliver Upton
2022-05-02 9:49 ` Marc Zyngier
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