Re: [Patch] mm: make CONFIG_NUMA depend on CONFIG_SYSFS

Eric Dumazet
2011-07-19T08:49:32Z

Le mardi 19 juillet 2011 à 15:05 +0800, Cong Wang a écrit :
> 于 2011年07月19日 14:54, Eric Dumazet 写道:
> > Le mardi 19 juillet 2011 à 14:20 +0800, Cong Wang a écrit :
> >
> >> Hmm, since we don't have to enable SYSFS for NUMA, how about
> >> make a new Kconfig for drivers/base/node.c? I.e., CONFIG_NUMA_SYSFS,
> >> like patch below.
> >>
> >
> > I dont quite understand this patch, nor the idea behind it.
> >
> > You can have a NUMA kernel (for appropriate percpu locality or whatever
> > kernel data), and yet user land processes unable to use numactl if SYSFS
> > is not enabled. I dont see a problem.
> >
>
> Both Pekka and Mel pointed out that it makes sense to have NUMA kernel
> without SYSFS, this means sysfs interface is not a must for NUMA kernel.
> Thus, I think it makes sense to separate the numa sysfs code out.

Sorry, I misread the patch, I was confused by the title, since it still
claims "make CONFIG_NUMA depend on CONFIG_SYSFS" ;)