diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-11-18 16:37:07 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:53:04 +0200 |
| commit | 4cee576493b6abc95cc7447a65f1b9d2b40b8f20 (patch) | |
| tree | 64235c288aaee838e7cebea4d129157935a26e75 | |
| parent | ba1389b7a04de07e6231693b7ebb34f5b5d1a3e6 (diff) | |
KVM: MMU: Add some mmu statistics
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/kvm.h | 6 | ||||
| -rw-r--r-- | drivers/kvm/mmu.c | 9 | ||||
| -rw-r--r-- | drivers/kvm/x86.c | 6 |
3 files changed, 20 insertions, 1 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index d3171f9c9c0..bdcc44e6b6d 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -362,6 +362,12 @@ struct kvm_memory_slot { }; struct kvm_vm_stat { + u32 mmu_shadow_zapped; + u32 mmu_pte_write; + u32 mmu_pte_updated; + u32 mmu_pde_zapped; + u32 mmu_flooded; + u32 mmu_recycled; }; struct kvm { diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index 9be54a5e858..87d8e70fe50 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -755,6 +755,7 @@ static void kvm_mmu_zap_page(struct kvm *kvm, { u64 *parent_pte; + ++kvm->stat.mmu_shadow_zapped; while (page->multimapped || page->parent_pte) { if (!page->multimapped) parent_pte = page->parent_pte; @@ -1226,9 +1227,12 @@ static void mmu_pte_write_new_pte(struct kvm_vcpu *vcpu, const void *new, int bytes, int offset_in_pte) { - if (page->role.level != PT_PAGE_TABLE_LEVEL) + if (page->role.level != PT_PAGE_TABLE_LEVEL) { + ++vcpu->kvm->stat.mmu_pde_zapped; return; + } + ++vcpu->kvm->stat.mmu_pte_updated; if (page->role.glevels == PT32_ROOT_LEVEL) paging32_update_pte(vcpu, page, spte, new, bytes, offset_in_pte); @@ -1263,6 +1267,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, int npte; pgprintk("%s: gpa %llx bytes %d\n", __FUNCTION__, gpa, bytes); + ++vcpu->kvm->stat.mmu_pte_write; kvm_mmu_audit(vcpu, "pre pte write"); if (gfn == vcpu->last_pt_write_gfn && !last_updated_pte_accessed(vcpu)) { @@ -1296,6 +1301,7 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, pgprintk("misaligned: gpa %llx bytes %d role %x\n", gpa, bytes, page->role.word); kvm_mmu_zap_page(vcpu->kvm, page); + ++vcpu->kvm->stat.mmu_flooded; continue; } page_offset = offset; @@ -1344,6 +1350,7 @@ void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) page = container_of(vcpu->kvm->active_mmu_pages.prev, struct kvm_mmu_page, link); kvm_mmu_zap_page(vcpu->kvm, page); + ++vcpu->kvm->stat.mmu_recycled; } } diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c index 016abc3357e..fdc7632d762 100644 --- a/drivers/kvm/x86.c +++ b/drivers/kvm/x86.c @@ -66,6 +66,12 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "fpu_reload", VCPU_STAT(fpu_reload) }, { "insn_emulation", VCPU_STAT(insn_emulation) }, { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) }, + { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) }, + { "mmu_pte_write", VM_STAT(mmu_pte_write) }, + { "mmu_pte_updated", VM_STAT(mmu_pte_updated) }, + { "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) }, + { "mmu_flooded", VM_STAT(mmu_flooded) }, + { "mmu_recycled", VM_STAT(mmu_recycled) }, { NULL } }; |