[PATCH v4 04/11] system/memory: add a tracepoint for memory_region_finalize

[Ani Sinha <anisinha@redhat.com>]

cosmetic: add a tracepoint to track when memory regions are getting freed.
Useful for debugging and tracking all freed memory regions.

Signed-off-by: Ani Sinha <anisinha@redhat.com>
---
 system/memory.c     | 1 +
 system/trace-events | 1 +
 2 files changed, 2 insertions(+)

diff --git a/system/memory.c b/system/memory.c
index 5fc36708ec..9485ba316f 100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -1730,6 +1730,7 @@ static void memory_region_finalize(Object *obj)
 {
     MemoryRegion *mr = MEMORY_REGION(obj);
 
+    trace_memory_region_finalize(mr->name);
     /*
      * Each memory region (that can be freed) must have an owner, and it
      * always has the same lifecycle of its owner.  It means when reaching
diff --git a/system/trace-events b/system/trace-events
index 51b4a4679a..0e1a4c5865 100644
--- a/system/trace-events
+++ b/system/trace-events
@@ -27,6 +27,7 @@ flatview_new(void *view, void *root) "%p (root %p)"
 flatview_destroy(void *view, void *root) "%p (root %p)"
 flatview_destroy_rcu(void *view, void *root) "%p (root %p)"
 global_dirty_changed(unsigned int bitmask) "bitmask 0x%"PRIx32
+memory_region_finalize(const char* name) "mr %s"
 
 # physmem.c
 address_space_map(void *as, uint64_t addr, uint64_t len, bool is_write, uint32_t attrs) "as:%p addr 0x%"PRIx64":%"PRIx64" write:%d attrs:0x%x"
-- 
2.42.0