It is good for debug and development
Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
---
arch/x86/kvm/mmu.c | 1 +
arch/x86/kvm/mmutrace.h | 23 +++++++++++++++++++++++
2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 89b51dc..2c512e8 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4276,6 +4276,7 @@ restart:
void kvm_mmu_invalidate_all_pages(struct kvm *kvm, bool zap_obsolete_pages)
{
spin_lock(&kvm->mmu_lock);
+ trace_kvm_mmu_invalidate_all_pages(kvm, zap_obsolete_pages);
kvm->arch.mmu_valid_gen++;
/*
diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h
index 697f466..e13d253 100644
--- a/arch/x86/kvm/mmutrace.h
+++ b/arch/x86/kvm/mmutrace.h
@@ -276,6 +276,29 @@ TRACE_EVENT(
__spte_satisfied(old_spte), __spte_satisfied(new_spte)
)
);
+
+TRACE_EVENT(
+ kvm_mmu_invalidate_all_pages,
+ TP_PROTO(struct kvm *kvm, bool zap_obsolete_pages),
+ TP_ARGS(kvm, zap_obsolete_pages),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, mmu_valid_gen)
+ __field(unsigned int, mmu_used_pages)
+ __field(bool, zap_obsolete_pages)
+ ),
+
+ TP_fast_assign(
+ __entry->mmu_valid_gen = kvm->arch.mmu_valid_gen;
+ __entry->mmu_used_pages = kvm->arch.n_used_mmu_pages;
+ __entry->zap_obsolete_pages = zap_obsolete_pages;
+ ),
+
+ TP_printk("kvm-mmu-valid-gen %lx zap_obsolete_pages %d "
+ "used_pages %x", __entry->mmu_valid_gen,
+ __entry->zap_obsolete_pages, __entry->mmu_used_pages
+ )
+);
#endif /* _TRACE_KVMMMU_H */
#undef TRACE_INCLUDE_PATH
--
1.7.7.6
--
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