On Tue, Nov 13, 2012 at 05:14:50PM -0800, Jacob Pan wrote: > On Tue, 13 Nov 2012 16:08:54 -0800 > Arjan van de Ven <ar...@linux.intel.com> wrote: > > > > I think I know, but I feel the need to ask anyway. Why not tell > > > RCU about the clamping? > > > > I don't mind telling RCU, but what cannot happen is a bunch of CPU > > time suddenly getting used (since that is the opposite of what is > > needed at the specific point in time of going idle)
Another round of RCU_FAST_NO_HZ rework, you are asking for? ;-) > Another reason is my observation that there are some assumptions/checks > to make sure only idle thread can tell rcu it is idle. Is it ok to > extend that to other kthreads? If you are only having the system take 6-millisecond "vacations", probably best to try it as it is and fix specific problems if/when they arise. Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/