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KVM: MMU: Add tracepoint for guest page aging

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Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity
2009-12-31 12:10:16 +02:00
committed by Marcelo Tosatti
parent 43db669730
commit 90bb6fc556
2 changed files with 30 additions and 3 deletions
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22
include/trace/events/kvm.h
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@@ -164,6 +164,28 @@ TRACE_EVENT(kvm_fpu,
TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol))
);
TRACE_EVENT(kvm_age_page,
TP_PROTO(ulong hva, struct kvm_memory_slot *slot, int ref),
TP_ARGS(hva, slot, ref),
TP_STRUCT__entry(
__field( u64, hva )
__field( u64, gfn )
__field( u8, referenced )
),
TP_fast_assign(
__entry->hva = hva;
__entry->gfn =
slot->base_gfn + ((hva - slot->userspace_addr) >> PAGE_SHIFT);
__entry->referenced = ref;
),
TP_printk("hva %llx gfn %llx %s",
__entry->hva, __entry->gfn,
__entry->referenced ? "YOUNG" : "OLD")
);
#endif /* _TRACE_KVM_MAIN_H */
/* This part must be outside protection */