[PATCH v1 0/2] Add timeout mechanism to qmp actions

[Zhenyu Ye <yezhenyu2@huawei.com>]

Before doing qmp actions, we need to lock the qemu_global_mutex,
so the qmp actions should not take too long time.

Unfortunately, some qmp actions need to acquire aio context and
this may take a long time.  The vm will soft lockup if this time
is too long.

So add a timeout mechanism while doing qmp actions.

Zhenyu Ye (2):
  util: introduce aio_context_acquire_timeout
  qmp: use aio_context_acquire_timeout replace aio_context_acquire

 block/qapi-sysemu.c         |  7 ++++++-
 block/qapi.c                |  6 +++++-
 blockdev.c                  | 35 ++++++++++++++++++++++++++++++-----
 include/block/aio.h         |  6 ++++++
 include/qemu/thread-posix.h |  1 +
 include/qemu/thread.h       |  1 +
 util/async.c                | 10 ++++++++++
 util/qemu-thread-posix.c    |  6 ++++++
 8 files changed, 65 insertions(+), 7 deletions(-)

-- 
2.22.0.windows.1