migration: Put thread names together with macros

Keep migration thread names together, so it's easier to see a list of all
possible migration threads.

Still two functional changes below besides the macro defintions:

  - There's one dirty rate thread that we overlooked before, now we add
  that too and name it as "mig/dirtyrate" following the old rules.

  - The old name "mig/src/rp-thr" has "-thr" but it may not be useful if
  it's a thread name anyway, while "rp" can be slightly hard to read.
  Taking this chance to rename it to "mig/src/return", hopefully a better
  name.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Acked-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Link: https://lore.kernel.org/r/20241011153652.517440-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index 233acb0..a74a6ae 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -29,6 +29,7 @@
 #include "sysemu/runstate.h"
 #include "exec/memory.h"
 #include "qemu/xxhash.h"
+#include "migration.h"
 
 /*
  * total_dirty_pages is procted by BQL and is used
@@ -839,8 +840,9 @@ void qmp_calc_dirty_rate(int64_t calc_time,
 
     init_dirtyrate_stat(config);
 
-    qemu_thread_create(&thread, "get_dirtyrate", get_dirtyrate_thread,
-                       (void *)&config, QEMU_THREAD_DETACHED);
+    qemu_thread_create(&thread, MIGRATION_THREAD_DIRTY_RATE,
+                       get_dirtyrate_thread, (void *)&config,
+                       QEMU_THREAD_DETACHED);
 }