commit ab28bd23125fb4a0411c3a3f01c4edacbc261486
author Paolo Bonzini <pbonzini@redhat.com> Thu Jul 09 08:55:38 2015 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Fri Jul 24 13:57:45 2015 +0200
tree 50cf40b9f83a43d2a7b6dee4a801e6c31fc409ee
parent c170aad8b057223b1139d72e5ce7acceafab4fa9

rcu: actually register threads that have RCU read-side critical sections

Otherwise, grace periods are detected too early!

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

iothread.c

diff --git a/iothread.c b/iothread.c
index 6d2a33f..da6ce7b 100644
--- a/iothread.c
+++ b/iothread.c
@@ -18,6 +18,7 @@
 #include "sysemu/iothread.h"
 #include "qmp-commands.h"
 #include "qemu/error-report.h"
+#include "qemu/rcu.h"
 
 typedef ObjectClass IOThreadClass;
 
@@ -31,6 +32,8 @@
     IOThread *iothread = opaque;
     bool blocking;
 
+    rcu_register_thread();
+
     qemu_mutex_lock(&iothread->init_done_lock);
     iothread->thread_id = qemu_get_thread_id();
     qemu_cond_signal(&iothread->init_done_cond);
@@ -45,6 +48,8 @@
         }
         aio_context_release(iothread->ctx);
     }
+
+    rcu_unregister_thread();
     return NULL;
 }