On Thursday 20 May 2010, Tejun Heo wrote: > Hello, > > (sorry about late reply) > > On 04/30/2010 07:26 PM, Oleg Nesterov wrote: > > Currently _cpu_down() can't flush and/or stop the frozen cwq->thread. > > > > IIRC this is fixable, but needs the nasty complications. We should > > thaw + stop the frozen cwq->thread, then move the pending works to > > another CPU. > > Oh, this isn't an issue w/ cmwq. While frozen all new works are > collected into per-cpu delayed worklist and while frozen trustee in > charge of the cpu will keep waiting. Once thawed, trustee will > execute all works including the delayed ones unbound to any cpu. So, does it require any intrusive changes to make it possible to create multithread freezable workqueues? Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
