topology.h

来自「linux 内核源代码」· C头文件 代码 · 共 58 行

#ifndef _ASM_MACH_TOPOLOGY_H
#define _ASM_MACH_TOPOLOGY_H	1

#include <asm/sn/hub.h>
#include <asm/sn/types.h>
#include <asm/mmzone.h>

struct cpuinfo_ip27 {
//	cpuid_t		p_cpuid;	/* PROM assigned cpuid */
	cnodeid_t	p_nodeid;	/* my node ID in compact-id-space */
	nasid_t		p_nasid;	/* my node ID in numa-as-id-space */
	unsigned char	p_slice;	/* Physical position on node board */
#if 0
	unsigned long		loops_per_sec;
	unsigned long		ipi_count;
	unsigned long		irq_attempt[NR_IRQS];
	unsigned long		smp_local_irq_count;
	unsigned long		prof_multiplier;
	unsigned long		prof_counter;
#endif
};

extern struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];

#define cpu_to_node(cpu)	(sn_cpu_info[(cpu)].p_nodeid)
#define parent_node(node)	(node)
#define node_to_cpumask(node)	(hub_data(node)->h_cpus)
#define node_to_first_cpu(node)	(first_cpu(node_to_cpumask(node)))
struct pci_bus;
extern int pcibus_to_node(struct pci_bus *);

#define pcibus_to_cpumask(bus)	(cpu_online_map)

extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];

#define node_distance(from, to)	(__node_distances[(from)][(to)])

/* sched_domains SD_NODE_INIT for SGI IP27 machines */
#define SD_NODE_INIT (struct sched_domain) {		\
	.span			= CPU_MASK_NONE,	\
	.parent			= NULL,			\
	.child			= NULL,			\
	.groups			= NULL,			\
	.min_interval		= 8,			\
	.max_interval		= 32,			\
	.busy_factor		= 32,			\
	.imbalance_pct		= 125,			\
	.cache_nice_tries	= 1,			\
	.flags			= SD_LOAD_BALANCE	\
				| SD_BALANCE_EXEC	\
				| SD_WAKE_BALANCE,	\
	.last_balance		= jiffies,		\
	.balance_interval	= 1,			\
	.nr_balance_failed	= 0,			\
}

#endif /* _ASM_MACH_TOPOLOGY_H */