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[PATCH] x86/x86_64: pcibus_to_node

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Define pcibus_to_node to be able to figure out which NUMA node contains a
given PCI device.  This defines pcibus_to_node(bus) in
include/linux/topology.h and adjusts the macros for i386 and x86_64 that
already provided a way to determine the cpumask of a pci device.

x86_64 was changed to not build an array of cpumasks anymore.  Instead an
array of nodes is build which can be used to generate the cpumask via
node_to_cpumask.

Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Lameter 2005-06-23 00:08:18 -07:00 • committed by Linus Torvalds
commit 8c5a09082f
5 changed files with 17 additions and 34 deletions
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8
include/asm-i386/topology.h
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@ -60,12 +60,8 @@ static inline int node_to_first_cpu(int node)
return first_cpu(mask);
}
/* Returns the number of the node containing PCI bus number 'busnr' */
static inline cpumask_t __pcibus_to_cpumask(int busnr)
{
return node_to_cpumask(mp_bus_id_to_node[busnr]);
}
#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus->number)
#define pcibus_to_node(bus) mp_bus_id_to_node[(bus)->number]
#define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus))
/* sched_domains SD_NODE_INIT for NUMAQ machines */
#define SD_NODE_INIT (struct sched_domain) { \