* [PATCH] Re: [Xen-staging] [xen-unstable] xen: Allow NUMA node to be specific to alloc_domheap_pages() via a new
[not found] <200804040950.m349oNaN021266@latara.uk.xensource.com>
@ 2008-04-04 15:06 ` Alex Williamson
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From: Alex Williamson @ 2008-04-04 15:06 UTC (permalink / raw)
To: Keir Fraser, andre.przywara; +Cc: xen-devel
On Fri, 2008-04-04 at 10:50 +0100, Xen staging patchbot-unstable wrote:
> diff -r 0834234fd668 -r 57febe0264e1 xen/include/xen/numa.h
> --- a/xen/include/xen/numa.h Fri Apr 04 10:18:45 2008 +0100
> +++ b/xen/include/xen/numa.h Fri Apr 04 10:48:01 2008 +0100
> @@ -8,6 +8,13 @@
> #define NODES_SHIFT 0
> #endif
>
> +#define NUMA_NO_NODE 0xFF
> +
> #define MAX_NUMNODES (1 << NODES_SHIFT)
>
> +#define vcpu_to_node(v) (cpu_to_node[(v)->processor])
> +
> +#define domain_to_node(d) \
> + (((d)->vcpu[0] != NULL) ? vcpu_to_node((d)->vcpu[0]) :
> NUMA_NO_NODE)
> +
> #endif /* _XEN_NUMA_H */
The cpu_to_node[] array is arch specific. The cpu_to_node() macro is
the mechanism to abstract this across archs. Thanks,
Alex
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
--
diff -r 80f3c86feb7f xen/include/xen/numa.h
--- a/xen/include/xen/numa.h Fri Apr 04 15:43:01 2008 +0100
+++ b/xen/include/xen/numa.h Fri Apr 04 09:03:49 2008 -0600
@@ -12,7 +12,7 @@
#define MAX_NUMNODES (1 << NODES_SHIFT)
-#define vcpu_to_node(v) (cpu_to_node[(v)->processor])
+#define vcpu_to_node(v) (cpu_to_node((v)->processor))
#define domain_to_node(d) \
(((d)->vcpu[0] != NULL) ? vcpu_to_node((d)->vcpu[0]) : NUMA_NO_NODE)
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