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| author | David Matlack <dmatlack@google.com> | 2016-12-20 15:25:57 -0800 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-01-09 14:46:03 +0100 |
| commit | f3414bc77419463c0d81eaa2cea7ee4ccb447c7d (patch) | |
| tree | 153185d45ad2105c030648945e650687fe3adfec /arch/x86/kvm/x86.c | |
| parent | 826da32140dada1467f4216410525511393317e8 (diff) | |
| download | lwn-f3414bc77419463c0d81eaa2cea7ee4ccb447c7d.tar.gz lwn-f3414bc77419463c0d81eaa2cea7ee4ccb447c7d.zip | |
kvm: x86: export maximum number of mmu_page_hash collisions
Report the maximum number of mmu_page_hash collisions as a per-VM stat.
This will make it easy to identify problems with the mmu_page_hash in
the future.
Signed-off-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a356d8e12c2f..4aece8b0a4aa 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -190,6 +190,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "mmu_unsync", VM_STAT(mmu_unsync) }, { "remote_tlb_flush", VM_STAT(remote_tlb_flush) }, { "largepages", VM_STAT(lpages) }, + { "max_mmu_page_hash_collisions", + VM_STAT(max_mmu_page_hash_collisions) }, { NULL } }; |