From 02d9651d6a46479e9d70b72dca34e43605d06cda Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 21 Sep 2017 12:34:00 +0200
Subject: [PATCH] memory: trace FlatView creation and destruction

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/exec/memory.h   | 1 -
 include/qemu/typedefs.h | 1 +
 memory.c                | 3 +++
 trace-events            | 3 +++
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/exec/memory.h b/include/exec/memory.h
index 402824c6f2..5ed4042f87 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -48,7 +48,6 @@
 
 typedef struct MemoryRegionOps MemoryRegionOps;
 typedef struct MemoryRegionMmio MemoryRegionMmio;
-typedef struct FlatView FlatView;
 
 struct MemoryRegionMmio {
     CPUReadMemoryFunc *read[3];
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index 163550214c..980d2b330e 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -30,6 +30,7 @@ typedef struct DisplaySurface DisplaySurface;
 typedef struct DriveInfo DriveInfo;
 typedef struct Error Error;
 typedef struct EventNotifier EventNotifier;
+typedef struct FlatView FlatView;
 typedef struct FWCfgEntry FWCfgEntry;
 typedef struct FWCfgIoState FWCfgIoState;
 typedef struct FWCfgMemState FWCfgMemState;
diff --git a/memory.c b/memory.c
index 706c38508f..68cdf8bad0 100644
--- a/memory.c
+++ b/memory.c
@@ -270,6 +270,7 @@ static FlatView *flatview_new(MemoryRegion *mr_root)
     view->ref = 1;
     view->root = mr_root;
     memory_region_ref(mr_root);
+    trace_flatview_new(view, mr_root);
 
     return view;
 }
@@ -295,6 +296,7 @@ static void flatview_destroy(FlatView *view)
 {
     int i;
 
+    trace_flatview_destroy(view, view->root);
     if (view->dispatch) {
         address_space_dispatch_free(view->dispatch);
     }
@@ -314,6 +316,7 @@ static bool flatview_ref(FlatView *view)
 static void flatview_unref(FlatView *view)
 {
     if (atomic_fetch_dec(&view->ref) == 1) {
+        trace_flatview_destroy_rcu(view, view->root);
         call_rcu(view, flatview_destroy, rcu);
     }
 }
diff --git a/trace-events b/trace-events
index 1f50f56d9d..1d2eb5d3e4 100644
--- a/trace-events
+++ b/trace-events
@@ -64,6 +64,9 @@ memory_region_tb_read(int cpu_index, uint64_t addr, uint64_t value, unsigned siz
 memory_region_tb_write(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
 memory_region_ram_device_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
 memory_region_ram_device_write(int cpu_index, void *mr, uint64_t addr, uint64_t value, unsigned size) "cpu %d mr %p addr 0x%"PRIx64" value 0x%"PRIx64" size %u"
+flatview_new(FlatView *view, MemoryRegion *root) "%p (root %p)"
+flatview_destroy(FlatView *view, MemoryRegion *root) "%p (root %p)"
+flatview_destroy_rcu(FlatView *view, MemoryRegion *root) "%p (root %p)"
 
 ### Guest events, keep at bottom
 
-- 
2.11.4.GIT