diff options
| author | Suraj Jitindar Singh <sjitindarsingh@gmail.com> | 2019-02-19 14:53:45 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2019-02-19 16:00:15 +1100 |
| commit | 8f1f7b9bedbce8d84e0b6b8beac671a6bc8f02c9 (patch) | |
| tree | d95a233ba4ac90a2fd19fe2613b28c8ac09aa278 /arch/powerpc/kvm/book3s_64_mmu_radix.c | |
| parent | a67614cc05a5052b265ea48196dab2fce11f5f2e (diff) | |
KVM: PPC: Book3S HV: Add KVM stat largepages_[2M/1G]
This adds an entry to the kvm_stats_debugfs directory which provides the
number of large (2M or 1G) pages which have been used to setup the guest
mappings, for radix guests.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_mmu_radix.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_radix.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c index 1b821c6efdef..f55ef071883f 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c @@ -403,8 +403,13 @@ void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, if (!memslot) return; } - if (shift) + if (shift) { /* 1GB or 2MB page */ page_size = 1ul << shift; + if (shift == PMD_SHIFT) + kvm->stat.num_2M_pages--; + else if (shift == PUD_SHIFT) + kvm->stat.num_1G_pages--; + } gpa &= ~(page_size - 1); hpa = old & PTE_RPN_MASK; @@ -878,6 +883,14 @@ int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, put_page(page); } + /* Increment number of large pages if we (successfully) inserted one */ + if (!ret) { + if (level == 1) + kvm->stat.num_2M_pages++; + else if (level == 2) + kvm->stat.num_1G_pages++; + } + return ret; } |