KVM: PPC: Move pte invalidate debug code to tracepoint

This patch moves the SPTE flush debug printk over to tracepoints.

Signed-off-by: Alexander Graf <agraf@suse.de>

2 files changed, 30 insertions, 2 deletions

diff --git a/arch/powerpc/kvm/book3s_mmu_hpte.c b/arch/powerpc/kvm/book3s_mmu_hpte.c
index ac94bd99256..3397152a2b2 100644
--- a/arch/powerpc/kvm/book3s_mmu_hpte.c
+++ b/arch/powerpc/kvm/book3s_mmu_hpte.c
@@ -104,8 +104,7 @@ static void invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
         if (hlist_unhashed(&pte->list_pte))
                 return;
 
-        dprintk_mmu("KVM: Flushing SPT: 0x%lx (0x%llx) -> 0x%llx\n",
-                    pte->pte.eaddr, pte->pte.vpage, pte->host_va);
+        trace_kvm_book3s_mmu_invalidate(pte);
 
         /* Different for 32 and 64 bit */
         kvmppc_mmu_invalidate_pte(vcpu, pte);
diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
index 68a84442d79..06ad93e4064 100644
--- a/arch/powerpc/kvm/trace.h
+++ b/arch/powerpc/kvm/trace.h
@@ -210,6 +210,35 @@ TRACE_EVENT(kvm_book3s_mmu_map,
                   __entry->vpage, __entry->raddr, __entry->flags)
 );
 
+TRACE_EVENT(kvm_book3s_mmu_invalidate,
+        TP_PROTO(struct hpte_cache *pte),
+        TP_ARGS(pte),
+
+        TP_STRUCT__entry(
+                __field(        u64,            host_va         )
+                __field(        u64,            pfn             )
+                __field(        ulong,          eaddr           )
+                __field(        u64,            vpage           )
+                __field(        ulong,          raddr           )
+                __field(        int,            flags           )
+        ),
+
+        TP_fast_assign(
+                __entry->host_va        = pte->host_va;
+                __entry->pfn            = pte->pfn;
+                __entry->eaddr          = pte->pte.eaddr;
+                __entry->vpage          = pte->pte.vpage;
+                __entry->raddr          = pte->pte.raddr;
+                __entry->flags          = (pte->pte.may_read ? 0x4 : 0) |
+                                          (pte->pte.may_write ? 0x2 : 0) |
+                                          (pte->pte.may_execute ? 0x1 : 0);
+        ),
+
+        TP_printk("Flush: hva=%llx pfn=%llx ea=%lx vp=%llx ra=%lx [%x]",
+                  __entry->host_va, __entry->pfn, __entry->eaddr,
+                  __entry->vpage, __entry->raddr, __entry->flags)
+);
+
 #endif /* CONFIG_PPC_BOOK3S */
 
 #endif /* _TRACE_KVM_H */