[PATCH v2 02/17] migration/ram: Add load start trace event

[Maciej S. Szmigiero]

From: "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com>

There's a RAM load complete trace event but there wasn't its start equivalent.

Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
---
 migration/ram.c        | 1 +
 migration/trace-events | 1 +
 2 files changed, 2 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 67ca3d5d51a1..7997bd830b9c 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -4127,6 +4127,7 @@ static int ram_load_precopy(QEMUFile *f)
                           RAM_SAVE_FLAG_ZERO);
     }
 
+    trace_ram_load_start();
     while (!ret && !(flags & RAM_SAVE_FLAG_EOS)) {
         ram_addr_t addr;
         void *host = NULL, *host_bak = NULL;
diff --git a/migration/trace-events b/migration/trace-events
index c65902f042bd..2a99a7baaea6 100644
--- a/migration/trace-events
+++ b/migration/trace-events
@@ -115,6 +115,7 @@ colo_flush_ram_cache_end(void) ""
 save_xbzrle_page_skipping(void) ""
 save_xbzrle_page_overflow(void) ""
 ram_save_iterate_big_wait(uint64_t milliconds, int iterations) "big wait: %" 
PRIu64 " milliseconds, %d iterations"
+ram_load_start(void) ""
 ram_load_complete(int ret, uint64_t seq_iter) "exit_code %d seq iteration %" 
PRIu64
 ram_write_tracking_ramblock_start(const char *block_id, size_t page_size, void 
*addr, size_t length) "%s: page_size: %zu addr: %p length: %zu"
 ram_write_tracking_ramblock_stop(const char *block_id, size_t page_size, void 
*addr, size_t length) "%s: page_size: %zu addr: %p length: %zu"