On Mon, Aug 19, 2024 at 5:29 PM Cindy Lu <l...@redhat.com> wrote:
>
> In commit 6e890c5d5021 ("vhost: use vhost_tasks for worker threads"),
> vhost removed the support for the kthread API. However, there are
> still situations where there is a request to use kthread.I think we need some tweak here. For example, we need to mention that the introduction of the vhost_taks introduce userspace noticeable changes as the worker inherit attributes from the owner instead of the kthreadd etc. > In this RFC, the support of kthread is added back. Additionally, > a module_param is added to identify which mode we are using, It's probably not identified, it's more about if we need to "enforce" the old behaviour. > and > a new UAPI is introduced to allow the userspace app to set the > mode they want to use. > > Cindy Lu (7): > vhost: Add a new module_param for enable kthread > vhost: Add kthread support in function vhost_worker_queue() > vhost: Add kthread support in function vhost_workers_free() > vhost: Add the vhost_worker to support kthread > vhost: Add the cgroup related function > vhost: Add kthread support in function vhost_worker_create > vhost: Add new UAPI to support changing Kthread mode > > drivers/vhost/vhost.c | 241 +++++++++++++++++++++++++++++++++++-- > drivers/vhost/vhost.h | 1 + > include/uapi/linux/vhost.h | 2 + > 3 files changed, 235 insertions(+), 9 deletions(-) > > -- > 2.45.0 >
