62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#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[];
|
|
|
|
#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;
|
|
}
|
|
/* broken generic file uses #ifndef later on this */
|
|
#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus)
|
|
|
|
#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*1000), \
|
|
.cache_nice_tries = 1, \
|
|
.per_cpu_gain = 100, \
|
|
.flags = SD_LOAD_BALANCE \
|
|
| SD_BALANCE_EXEC \
|
|
| SD_WAKE_BALANCE, \
|
|
.last_balance = jiffies, \
|
|
.balance_interval = 1, \
|
|
.nr_balance_failed = 0, \
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#endif
|