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cpumask: IA64: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask

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Impact: New APIs

The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask.  Part of removing cpumasks from
the stack.

We can also use the new for_each_cpu_and() to avoid a temporary cpumask,
and a gratuitous test in sn_topology_show.

(Includes fix from KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tony Luck <tony.luck@intel.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
This commit is contained in:
Rusty Russell
2008-12-26 22:23:40 +10:30
parent 86c6f274f5
commit fbb776c3ca
4 changed files with 30 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/ia64/include/asm/topology.h
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@@ -34,6 +34,7 @@
* Returns a bitmask of CPUs on Node 'node'.
*/
#define node_to_cpumask(node) (node_to_cpu_mask[node])
#define cpumask_of_node(node) (&node_to_cpu_mask[node])
/*
* Returns the number of the node containing Node 'nid'.
@@ -45,7 +46,7 @@
/*
* Returns the number of the first CPU on Node 'node'.
*/
#define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
#define node_to_first_cpu(node) (cpumask_first(cpumask_of_node(node)))
/*
* Determines the node for a given pci bus
@@ -121,6 +122,10 @@ extern void arch_fix_phys_package_id(int num, u32 slot);
node_to_cpumask(pcibus_to_node(bus)) \
)
#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
cpu_all_mask : \
cpumask_from_node(pcibus_to_node(bus)))
#include <asm-generic/topology.h>
#endif /* _ASM_IA64_TOPOLOGY_H */