On Wed, 2011-04-20 at 10:23 +0900, KOSAKI Motohiro wrote:
> > On Tue, 19 Apr 2011, James Bottomley wrote:
> >
> > > > Which part of me telling you that you will break lots of other things in
> > > > the core kernel dont you get?
> > >
> > > I get that you tell me this ... however, the systems that, according to
> > > you, should be failing to get to boot prompt do, in fact, manage it.
> >
> > If you dont use certain subsystems then it may work. Also do you run with
> > debuggin on.
> >
> > The following patch is I think what would be needed to fix it.
>
> I'm worry about this patch. A lot of mm code assume !NUMA systems
> only have node 0. Not only SLUB.
>
> I'm not sure why this unfortunate mismatch occur. but I think DISCONTIG
> hacks makes less sense. Can we consider parisc turn NUMA on instead?
Well, you mean a patch like this? It won't build ... obviously we need
some more machinery
CC arch/parisc/kernel/asm-offsets.s
In file included from include/linux/sched.h:78,
from arch/parisc/kernel/asm-offsets.c:31:
include/linux/topology.h:212:2: error: #error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
In file included from include/linux/sched.h:78,
from arch/parisc/kernel/asm-offsets.c:31:
include/linux/topology.h: In function 'numa_node_id':
include/linux/topology.h:255: error: implicit declaration of function 'cpu_to_node'
James
---
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 69ff049..ffe4058 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -261,6 +261,9 @@ config HPUX
bool "Support for HP-UX binaries"
depends on !64BIT
+config NUMA
+ def_bool n
+
config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
diff --git a/mm/Kconfig b/mm/Kconfig
index e9c0c61..17a1474 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -64,6 +64,7 @@ endchoice
config DISCONTIGMEM
def_bool y
depends on (!SELECT_MEMORY_MODEL && ARCH_DISCONTIGMEM_ENABLE) || DISCONTIGMEM_MANUAL
+ select NUMA
config SPARSEMEM
def_bool y
--
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