kernel-ark/arch/alpha/include/asm/topology.h
Rusty Russell 2258a5bb10 cpumask: alpha: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask
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.

I'm not sure the existing code even compiles, but new version is
straightforward.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Richard Henderson <rth@twiddle.net>
2008-12-26 22:23:41 +10:30

65 lines
1.2 KiB
C

#ifndef _ASM_ALPHA_TOPOLOGY_H
#define _ASM_ALPHA_TOPOLOGY_H
#include <linux/smp.h>
#include <linux/threads.h>
#include <asm/machvec.h>
#ifdef CONFIG_NUMA
static inline int cpu_to_node(int cpu)
{
int node;
if (!alpha_mv.cpuid_to_nid)
return 0;
node = alpha_mv.cpuid_to_nid(cpu);
#ifdef DEBUG_NUMA
BUG_ON(node < 0);
#endif
return node;
}
static inline cpumask_t node_to_cpumask(int node)
{
cpumask_t node_cpu_mask = CPU_MASK_NONE;
int cpu;
for_each_online_cpu(cpu) {
if (cpu_to_node(cpu) == node)
cpu_set(cpu, node_cpu_mask);
}
#ifdef DEBUG_NUMA
printk("node %d: cpu_mask: %016lx\n", node, node_cpu_mask);
#endif
return node_cpu_mask;
}
extern struct cpumask node_to_cpumask_map[];
/* FIXME: This is dumb, recalculating every time. But simple. */
static const struct cpumask *cpumask_of_node(int node)
{
int cpu;
cpumask_clear(&node_to_cpumask_map[node]);
for_each_online_cpu(cpu) {
if (cpu_to_node(cpu) == node)
cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
}
return &node_to_cpumask_map[node];
}
#define pcibus_to_cpumask(bus) (cpu_online_map)
#define cpumask_of_pcibus(bus) (cpu_online_mask)
#endif /* !CONFIG_NUMA */
# include <asm-generic/topology.h>
#endif /* _ASM_ALPHA_TOPOLOGY_H */