KVM: PPC: Add tracepoint for generic mmu map

This patch moves the generic mmu map debugging over to tracepoints.

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

2 files changed, 32 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/book3s_mmu_hpte.c b/arch/powerpc/kvm/book3s_mmu_hpte.c
index 02c64ab99c97..ac94bd992564 100644
--- a/arch/powerpc/kvm/book3s_mmu_hpte.c
+++ b/arch/powerpc/kvm/book3s_mmu_hpte.c
@@ -21,6 +21,7 @@
 #include <linux/kvm_host.h>
 #include <linux/hash.h>
 #include <linux/slab.h>
+#include "trace.h"
 
 #include <asm/kvm_ppc.h>
 #include <asm/kvm_book3s.h>
@@ -66,6 +67,8 @@ void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
 {
         u64 index;
 
+        trace_kvm_book3s_mmu_map(pte);
+
         spin_lock(&vcpu->arch.mmu_lock);
 
         /* Add to ePTE list */
diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h
index 8ed6f1c7c86e..68a84442d799 100644
--- a/arch/powerpc/kvm/trace.h
+++ b/arch/powerpc/kvm/trace.h
@@ -181,6 +181,35 @@ TRACE_EVENT(kvm_book3s_64_mmu_map,
 
 #endif /* CONFIG_PPC_BOOK3S_64 */
 
+TRACE_EVENT(kvm_book3s_mmu_map,
+        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("Map: 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 */