diff options
| author | David Matlack <dmatlack@google.com> | 2022-01-19 23:07:38 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-02-10 13:50:43 -0500 |
| commit | e0b728b1f1a951e0d23eef08cfa920a8104e39db (patch) | |
| tree | 23a212f7a7957e0ba4a533fe661cac9bd1b9b39b /arch/x86/kvm/mmu/mmutrace.h | |
| parent | cb00a70bd4b7e42dcbd6cd80b3f1697b10cdb44e (diff) | |
KVM: x86/mmu: Add tracepoint for splitting huge pages
Add a tracepoint that records whenever KVM eagerly splits a huge page
and the error status of the split to indicate if it succeeded or failed
and why.
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20220119230739.2234394-18-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/mmutrace.h')
| -rw-r--r-- | arch/x86/kvm/mmu/mmutrace.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu/mmutrace.h b/arch/x86/kvm/mmu/mmutrace.h index de5e8e4e1aa7..12247b96af01 100644 --- a/arch/x86/kvm/mmu/mmutrace.h +++ b/arch/x86/kvm/mmu/mmutrace.h @@ -416,6 +416,29 @@ TRACE_EVENT( ) ); +TRACE_EVENT( + kvm_mmu_split_huge_page, + TP_PROTO(u64 gfn, u64 spte, int level, int errno), + TP_ARGS(gfn, spte, level, errno), + + TP_STRUCT__entry( + __field(u64, gfn) + __field(u64, spte) + __field(int, level) + __field(int, errno) + ), + + TP_fast_assign( + __entry->gfn = gfn; + __entry->spte = spte; + __entry->level = level; + __entry->errno = errno; + ), + + TP_printk("gfn %llx spte %llx level %d errno %d", + __entry->gfn, __entry->spte, __entry->level, __entry->errno) +); + #endif /* _TRACE_KVMMMU_H */ #undef TRACE_INCLUDE_PATH |