Re: [PATCH v2] Fix fake numa on ppc

On Thu, Sep 3, 2009 at 1:06 AM, David Rientjes[off-list ref] wrote:

On Wed, 2 Sep 2009, Ankita Garg wrote:

quoted

Currently, the behavior of fake numa is not so on x86 as well? Below is
a sample output from a single node x86 system booted with numa=3Dfake=3D=

8:

quoted

# cat node0/cpulist

# cat node1/cpulist

...
# cat node6/cpulist

# cat node7/cpulist
0-7

Presently, just fixing the cpu association issue with ppc, as explained
in my previous mail.

Right, I'm proposing an alternate mapping scheme (which we've used for
years) for both platforms such that a cpu is bound (and is set in
cpumask_of_node()) to each fake node with which it has physical affinity.
That is the only way for zonelist ordering in node order, task migration
from offlined cpus, correct sched domains, etc. =A0I can propose a patchs=

et

for x86_64 to do exactly this if there aren't any objections and I hope
you'll help do ppc.

Sounds interesting, I'd definitely be interested in seeing your
proposal, but I would think of that as additional development on top
of this patch

Balbir Singh.