[Qemu-devel] [PATCH 13/41] ram: create trace event for migration sync bitmap

[Juan Quintela <quintela@redhat.com>]

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 arch_init.c  | 6 ++++++
 trace-events | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/arch_init.c b/arch_init.c
index a58e8c3..6e0d7c4 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -45,6 +45,7 @@
 #include "hw/pcspk.h"
 #include "qemu/page_cache.h"
 #include "qmp-commands.h"
+#include "trace.h"

 #ifdef DEBUG_ARCH_INIT
 #define DPRINTF(fmt, ...) \
@@ -359,7 +360,12 @@ static inline void migration_bitmap_set_dirty(MemoryRegion *mr, int length)

 static void migration_bitmap_sync(void)
 {
+    uint64_t num_dirty_pages_init = ram_list.dirty_pages;
+
+    trace_migration_bitmap_sync_start();
     memory_global_sync_dirty_bitmap(get_system_memory());
+    trace_migration_bitmap_sync_end(ram_list.dirty_pages
+                                    - num_dirty_pages_init);
 }


diff --git a/trace-events b/trace-events
index b48fe2d..2666191 100644
--- a/trace-events
+++ b/trace-events
@@ -914,6 +914,10 @@ ppm_save(const char *filename, void *display_surface) "%s surface=%p"
 savevm_section_start(void) ""
 savevm_section_end(unsigned int section_id) "section_id %u"

+# arch_init.c
+migration_bitmap_sync_start(void) ""
+migration_bitmap_sync_end(uint64_t dirty_pages) "dirty_pages %" PRIu64""
+
 # hw/qxl.c
 disable qxl_interface_set_mm_time(int qid, uint32_t mm_time) "%d %d"
 disable qxl_io_write_vga(int qid, const char *mode, uint32_t addr, uint32_t val) "%d %s addr=%u val=%u"
-- 
1.7.11.4