On Mon, 2015-08-24 at 09:41 +0200, Ingo Molnar wrote: > * Mike Galbraith <umgwanakikb...@gmail.com> wrote: > > > On Mon, 2015-08-24 at 08:44 +0200, Ingo Molnar wrote: > > > > > the 'housekeeping CPU' is essentially the boot CPU. Yet we dedicate a > > > full mask to > > > it (housekeeping_mask - a variable mask to begin with) and recover the > > > housekeeping CPU via: > > > > > > + return cpumask_any_and(housekeeping_mask, cpu_online_mask); > > > > There can be, and had better be if box is big, multiple housekeepers. > > Yes - but that does not seem to be possible via the code right now AFAICS, so > at > minimum it's incomplete.
In master housekeepers are set up in tick_nohz_init(). Everybody who's not a nohz_full CPU is a housekeeper. -Mike -- 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/