[Qemu-devel] [RFC PATCH 12/14] migration: report RCU quiescent states

[Mike Day]

From: Paolo Bonzini <address@hidden>

The migration thread polls s->state periodically, it does not
use a mutex or condition variable, so it has to report quiescent
states manually.

Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Mike Day <address@hidden>
---
 migration.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/migration.c b/migration.c
index 1402fa7..9d0950e 100644
--- a/migration.c
+++ b/migration.c
@@ -22,6 +22,7 @@
 #include "qemu/sockets.h"
 #include "migration/block.h"
 #include "qemu/thread.h"
+#include "qemu/rcu.h"
 #include "qmp-commands.h"
 #include "trace.h"
 
@@ -563,6 +564,7 @@ static void *migration_thread(void *opaque)
         int64_t current_time;
         uint64_t pending_size;
 
+        rcu_quiescent_state();
         if (!qemu_file_rate_limit(s->file)) {
             DPRINTF("iterate\n");
             pending_size = qemu_savevm_state_pending(s->file, max_size);
-- 
1.8.3.1