From: Alexander Graf <agraf@suse.de>
Date: Mon, 2 Aug 2010 10:55:19 +0000 (+0200)
Subject: KVM: PPC: Move pte invalidate debug code to tracepoint
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8696ee431233171b3c1cc82bae0193efc4fef2ac;p=linux-beck.git

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>
---

diff --git a/arch/powerpc/kvm/book3s_mmu_hpte.c b/arch/powerpc/kvm/book3s_mmu_hpte.c
index ac94bd992564..3397152a2b26 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 68a84442d799..06ad93e40648 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 */