diff options
| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2013-05-31 08:36:25 +0800 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-06-05 12:32:57 +0300 |
| commit | 35006126f024f68727c67001b9cb703c38f69268 (patch) | |
| tree | f98b3c3de0b0f3407eccd5db3b52efdfbf742f0e | |
| parent | 2248b023219251908aedda0621251cffc548f258 (diff) | |
KVM: MMU: add tracepoint for kvm_mmu_invalidate_all_pages
It is good for debug and development
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 1 | ||||
| -rw-r--r-- | 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 c8063b9b30e..3fd060af539 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -4264,6 +4264,7 @@ 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 697f4666499..eb444dd374a 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 |