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 | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index c010ace..3a3e6c5 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -4245,6 +4245,7 @@ restart: void kvm_mmu_invalidate_zap_all_pages(struct kvm *kvm) { spin_lock(&kvm->mmu_lock); + trace_kvm_mmu_invalidate_zap_all_pages(kvm); kvm->arch.mmu_valid_gen++; kvm_zap_obsolete_pages(kvm); diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h index 697f466..eb444dd 100644 --- a/arch/x86/kvm/mmutrace.h +++ b/arch/x86/kvm/mmutrace.h @@ -276,6 +276,26 @@ TRACE_EVENT( __spte_satisfied(old_spte), __spte_satisfied(new_spte) ) ); + +TRACE_EVENT( + kvm_mmu_invalidate_zap_all_pages, + TP_PROTO(struct kvm *kvm), + TP_ARGS(kvm), + + TP_STRUCT__entry( + __field(unsigned long, mmu_valid_gen) + __field(unsigned int, mmu_used_pages) + ), + + TP_fast_assign( + __entry->mmu_valid_gen = kvm->arch.mmu_valid_gen; + __entry->mmu_used_pages = kvm->arch.n_used_mmu_pages; + ), + + TP_printk("kvm-mmu-valid-gen %lx used_pages %x", + __entry->mmu_valid_gen, __entry->mmu_used_pages + ) +); #endif /* _TRACE_KVMMMU_H */ #undef TRACE_INCLUDE_PATH -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html