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[POWERPC] pcibus_to_node fixes

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of_node_to_nid returns -1 if the associativity cannot be found. This
means pcibus_to_cpumask has to be careful not to pass a negative index into
node_to_cpumask.

Since pcibus_to_node could be used a lot, and of_node_to_nid is slow (it
walks a list doing strcmps), lets also cache the node in the
pci_controller struct.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Anton Blanchard
2006-06-10 20:53:06 +10:00
committed by Paul Mackerras
parent f2b09c8189
commit 357518fa34
3 changed files with 27 additions and 8 deletions
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14
include/asm-powerpc/topology.h
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@@ -32,13 +32,13 @@ static inline int node_to_first_cpu(int node)
int of_node_to_nid(struct device_node *device);
#ifdef CONFIG_PPC64
#define pcibus_to_node(bus) (of_node_to_nid(bus->sysdata))
#define pcibus_to_cpumask(bus) (node_to_cpumask(of_node_to_nid(bus->sysdata)))
#else
#define pcibus_to_node(node) (-1)
#define pcibus_to_cpumask(bus) (cpu_online_map)
#endif
struct pci_bus;
extern int pcibus_to_node(struct pci_bus *bus);
#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
CPU_MASK_ALL : \
node_to_cpumask(pcibus_to_node(bus)) \
)
/* sched_domains SD_NODE_INIT for PPC64 machines */
#define SD_NODE_INIT (struct sched_domain) { \