On Mon, Apr 04, 2005 at 03:46:20PM -0700, Nathan Lynch wrote: > > Hi Nigel! > > On Tue, Apr 05, 2005 at 08:14:25AM +1000, Nigel Cunningham wrote: > > > > On Tue, 2005-04-05 at 01:33, Nathan Lynch wrote: > > > > Yes, exactly. Someone who understand do_exit please help clean > > No, that wouldn't work. I am saying that there's little to gain by > adding all this complexity for destroying the idle tasks when it's > fairly simple to create num_possible_cpus() - 1 idle tasks* to > accommodate any additional cpus which may come along. This is what > ppc64 does now, and it should be feasible on any architecture which > supports cpu hotplug. > > Nathan > > * num_possible_cpus() - 1 because the idle task for the boot cpu is > created in sched_init. >
In ia64 we create idle threads on demand if one is not available for the same logical cpu number, and re-used when the same logical cpu number is re-used. just a minor improvement, i also thought about idle exit, but wasnt worth anything in return. Cheers, ashok - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
