[PATCH] memory: Display MemoryRegion name in read/write ops trace events

[Philippe Mathieu-Daudé]

MemoryRegion names is cached on first call to memory_region_name(),
so displaying the name is trace events is cheap. Add it for read /
write ops.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 softmmu/memory.c     | 12 ++++++++----
 softmmu/trace-events |  4 ++--
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/softmmu/memory.c b/softmmu/memory.c
index 874a8fccdee..d4d9ab8828e 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -444,7 +444,8 @@ static MemTxResult  
memory_region_read_accessor(MemoryRegion *mr,
         trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
     } else if (trace_event_get_state_backends(TRACE_MEMORY_REGION_OPS_READ)) {
         hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
-        trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
+        trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size,
+                                     memory_region_name(mr));
     }
     memory_region_shift_read_access(value, shift, mask, tmp);
     return MEMTX_OK;
@@ -466,7 +467,8 @@ static MemTxResult 
memory_region_read_with_attrs_accessor(MemoryRegion *mr,
         trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
     } else if (trace_event_get_state_backends(TRACE_MEMORY_REGION_OPS_READ)) {
         hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
-        trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
+        trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size,
+                                     memory_region_name(mr));
     }
     memory_region_shift_read_access(value, shift, mask, tmp);
     return r;
@@ -486,7 +488,8 @@ static MemTxResult 
memory_region_write_accessor(MemoryRegion *mr,
         trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, 
size);
     } else if (trace_event_get_state_backends(TRACE_MEMORY_REGION_OPS_WRITE)) {
         hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
-        trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, 
size);
+        trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size,
+                                      memory_region_name(mr));
     }
     mr->ops->write(mr->opaque, addr, tmp, size);
     return MEMTX_OK;
@@ -506,7 +509,8 @@ static MemTxResult 
memory_region_write_with_attrs_accessor(MemoryRegion *mr,
         trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, 
size);
     } else if (trace_event_get_state_backends(TRACE_MEMORY_REGION_OPS_WRITE)) {
         hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
-        trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, 
size);
+        trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size,
+                                      memory_region_name(mr));
     }
     return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
 }
diff --git a/softmmu/trace-events b/softmmu/trace-events
index b80ca042e1f..359fb37cc8d 100644
--- a/softmmu/trace-events
+++ b/softmmu/trace-events
@@ -9,8 +9,8 @@ cpu_in(unsigned int addr, char size, unsigned int val) "addr 
0x%x(%c) value %u"
 cpu_out(unsigned int addr, char size, unsigned int val) "addr 0x%x(%c) value 
%u"
 
 # memory.c
-memory_region_ops_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_ops_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"
+memory_region_ops_read(int cpu_index, void *mr, uint64_t addr, uint64_t value, 
unsigned size, const char *name) "cpu %d mr %p addr 0x%"PRIx64" value 
0x%"PRIx64" size %u name '%s'"
+memory_region_ops_write(int cpu_index, void *mr, uint64_t addr, uint64_t 
value, unsigned size, const char *name) "cpu %d mr %p addr 0x%"PRIx64" value 
0x%"PRIx64" size %u name '%s'"
 memory_region_subpage_read(int cpu_index, void *mr, uint64_t offset, uint64_t 
value, unsigned size) "cpu %d mr %p offset 0x%"PRIx64" value 0x%"PRIx64" size 
%u"
 memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t 
value, unsigned size) "cpu %d mr %p offset 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"
-- 
2.26.2