On Thu, Aug 29, 2019 at 08:16:41PM +0800, Wanpeng Li wrote: > > Current situation regarding haltpoll driver is: > > > > overcommit group: haltpoll driver is not loaded by default, they are > > happy. > > > > non overcommit group: boots without "realtime hints" flag, loads haltpoll driver, > > happy. > > > > Situation with patch above: > > > > overcommit group: haltpoll driver is not loaded by default, they are > > happy. > > > > non overcommit group: boots without "realtime hints" flag, haltpoll driver > > cannot be loaded. > > non overcommit group, if they don't care latency/performance, they > don't need to enable haltpoll, "realtime hints" etc. Otherwise, they > should better tune. As mentioned before, "being overcommitted" is a property which is transitional. A static true/false scheme reflects this poorly. Therefore the OS should detect it and act accordingly.
