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#ifndef _ASM_X86_64_TOPOLOGY_H
#define _ASM_X86_64_TOPOLOGY_H
#include <linux/config.h>
#ifdef CONFIG_DISCONTIGMEM
#include <asm/mpspec.h>
#include <asm/bitops.h>
/* Map the K8 CPU local memory controllers to a simple 1:1 CPU:NODE topology */
extern cpumask_t cpu_online_map;
extern unsigned char cpu_to_node[];
extern cpumask_t node_to_cpumask[];
extern cpumask_t pci_bus_to_cpumask[];
#ifdef CONFIG_ACPI_NUMA
extern int __node_distance(int, int);
#define node_distance(a,b) __node_distance(a,b)
/* #else fallback version */
#endif
#define cpu_to_node(cpu) (cpu_to_node[cpu])
#define parent_node(node) (node)
#define node_to_first_cpu(node) (__ffs(node_to_cpumask[node]))
#define node_to_cpumask(node) (node_to_cpumask[node])
static inline cpumask_t __pcibus_to_cpumask(int bus)
{
cpumask_t busmask = pci_bus_to_cpumask[bus];
cpumask_t online = cpu_online_map;
cpumask_t res;
cpus_and(res, busmask, online);
return res;
}
#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus->number)
#ifdef CONFIG_NUMA
/* sched_domains SD_NODE_INIT for x86_64 machines */
#define SD_NODE_INIT (struct sched_domain) { \
.span = CPU_MASK_NONE, \
.parent = NULL, \
.groups = NULL, \
.min_interval = 8, \
.max_interval = 32, \
.busy_factor = 32, \
.imbalance_pct = 125, \
.cache_hot_time = (10*1000000), \
.cache_nice_tries = 1, \
.per_cpu_gain = 100, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_NEWIDLE \
| SD_BALANCE_EXEC \
| SD_WAKE_IDLE \
| SD_WAKE_BALANCE, \
.last_balance = jiffies, \
.balance_interval = 1, \
.nr_balance_failed = 0, \
}
#endif
#endif
#include <asm-generic/topology.h>
#endif
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