migration/ram: Add load start trace event

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>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/94ddfa7ecb83a78f73b82867dd30c8767592d257.1730203967.git.maciej.szmigiero@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>

diff --git a/migration/ram.c b/migration/ram.c
index f164dc611fb0d9fe7bd2e4efd7072ba74ba0be03..05ff9eb32876bacf3bcb340714b83247b760e364 100644 (file)
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -4294,6 +4294,7 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
      * it will be necessary to reduce the granularity of this
      * critical section.
      */
+    trace_ram_load_start();
     WITH_RCU_READ_LOCK_GUARD() {
         if (postcopy_running) {
             /*

diff --git a/migration/trace-events b/migration/trace-events
index 0638183056537367b65b9b2c70ca8cc4c7fa6006..bb0e0cc6dcfec2421327b2510ac80b7b7fc7447c 100644 (file)
--- 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"