[PULL 09/25] monitor: convert monitor_cleanup() to AIO_WAIT_WHILE_UNLOCKED()

Kevin Wolf posted 25 patches 1 year, 11 months ago
Maintainers: Stefan Berger <stefanb@linux.vnet.ibm.com>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Stefan Weil <sw@weilnetz.de>, Stefan Hajnoczi <stefanha@redhat.com>, Fam Zheng <fam@euphon.net>, Aarushi Mehta <mehta.aaru20@gmail.com>, Julia Suvorova <jusual@redhat.com>, Stefano Garzarella <sgarzare@redhat.com>, John Snow <jsnow@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>, Eric Blake <eblake@redhat.com>, Greg Kurz <groug@kaod.org>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, "Michael S. Tsirkin" <mst@redhat.com>, "Dr. David Alan Gilbert" <dave@treblig.org>, Markus Armbruster <armbru@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
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[PULL 09/25] monitor: convert monitor_cleanup() to AIO_WAIT_WHILE_UNLOCKED()
Posted by Kevin Wolf 1 year, 11 months ago
From: Stefan Hajnoczi <stefanha@redhat.com>

monitor_cleanup() is called from the main loop thread. Calling
AIO_WAIT_WHILE(qemu_get_aio_context(), ...) from the main loop thread is
equivalent to AIO_WAIT_WHILE_UNLOCKED(NULL, ...) because neither unlocks
the AioContext and the latter's assertion that we're in the main loop
succeeds.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230309190855.414275-7-stefanha@redhat.com>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 monitor/monitor.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/monitor/monitor.c b/monitor/monitor.c
index 8dc96f6af9..602535696c 100644
--- a/monitor/monitor.c
+++ b/monitor/monitor.c
@@ -666,7 +666,7 @@ void monitor_cleanup(void)
      * We need to poll both qemu_aio_context and iohandler_ctx to make
      * sure that the dispatcher coroutine keeps making progress and
      * eventually terminates.  qemu_aio_context is automatically
-     * polled by calling AIO_WAIT_WHILE on it, but we must poll
+     * polled by calling AIO_WAIT_WHILE_UNLOCKED on it, but we must poll
      * iohandler_ctx manually.
      *
      * Letting the iothread continue while shutting down the dispatcher
@@ -679,7 +679,7 @@ void monitor_cleanup(void)
         aio_co_wake(qmp_dispatcher_co);
     }
 
-    AIO_WAIT_WHILE(qemu_get_aio_context(),
+    AIO_WAIT_WHILE_UNLOCKED(NULL,
                    (aio_poll(iohandler_get_aio_context(), false),
                     qatomic_mb_read(&qmp_dispatcher_co_busy)));
 
-- 
2.40.0