Messages in this thread | | | Date | Mon, 23 Apr 2018 15:09:11 +0100 | From | Wei Liu <> | Subject | Re: [RFC 0/2] To introduce xenwatch multithreading (xen mtwatch) |
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On Sat, Apr 07, 2018 at 07:25:53PM +0800, Dongli Zhang wrote: > About per-domU xenwatch thread create/destroy, a new type of xenstore node is > introduced: '/local/domain/0/mtwatch/<domid>'. > > Suppose the new domid id 7. During the domU (domid=7) creation, the xen > toolstack writes '/local/domain/0/mtwatch/7' to xenstore before the insertion > of '/local/domain/7'. When the domid=7 is destroyed, the last xenstore > operation by xen toolstack is to remove '/local/domain/0/mtwatch/7'. > > The dom0 kernel subscribes a watch at node '/local/domain/0/mtwatch'. Kernel > thread [xen-mtwatch-7] is created when '/local/domain/0/mtwatch/7' is inserted, > while this kernel thread is destroyed when the corresponding xenstore node is > removed.
Instead of inventing yet another node, can you not watch /local/domain directly?
Wei.
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