On 07 Feb 2007 11:20:06 +0100
Andi Kleen <[email protected]> wrote:
> KAMEZAWA Hiroyuki <[email protected]> writes:
>
> > current mempolicy just checks whether a node is online or not.
> > If there is memory-less-node, mempolicy's target node can be
> > invalid.
> > This patch adds a check whether a node has memory or not.
>
> IMHO there shouldn't be any memory less nodes. The architecture code
> should not create them. The CPU should be assigned to a nearby node instead.
> At least x86-64 ensures that.
>
AFAIK, ia64 creates nodes just depends on SRAT's possible resource information.
Then, ia64 can create cpu-memory-less-node(node with no available resource.).
(*)I don't like this.
If we don't allow memory-less-node, we may have to add several codes for cpu-hot-add.
cpus should be moved to nearby node at hotadd .
And node-hot-add have to care that cpus mustn't be added before memory, cpu-driven
node-hot-add will never occur. (ACPI's 'container' device spec can't guaranntee this.)
-Kame
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
