tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_MACH_TOPOLOGY_H
2#define _ASM_MACH_TOPOLOGY_H 1
3
4#include <asm/sn/hub.h>
5#include <asm/sn/types.h>
6#include <asm/mmzone.h>
7
8struct cpuinfo_ip27 {
9// cpuid_t p_cpuid; /* PROM assigned cpuid */
10 cnodeid_t p_nodeid; /* my node ID in compact-id-space */
11 nasid_t p_nasid; /* my node ID in numa-as-id-space */
12 unsigned char p_slice; /* Physical position on node board */
13#if 0
14 unsigned long loops_per_sec;
15 unsigned long ipi_count;
16 unsigned long irq_attempt[NR_IRQS];
17 unsigned long smp_local_irq_count;
18 unsigned long prof_multiplier;
19 unsigned long prof_counter;
20#endif
21};
22
23extern struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
24
25#define cpu_to_node(cpu) (sn_cpu_info[(cpu)].p_nodeid)
26#define parent_node(node) (node)
27#define node_to_cpumask(node) (hub_data(node)->h_cpus)
28#define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
29struct pci_bus;
30extern int pcibus_to_node(struct pci_bus *);
31
32#define pcibus_to_cpumask(bus) (cpu_online_map)
33
34extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];
35
36#define node_distance(from, to) (__node_distances[(from)][(to)])
37
38/* sched_domains SD_NODE_INIT for SGI IP27 machines */
39#define SD_NODE_INIT (struct sched_domain) { \
40 .span = CPU_MASK_NONE, \
41 .parent = NULL, \
42 .child = NULL, \
43 .groups = NULL, \
44 .min_interval = 8, \
45 .max_interval = 32, \
46 .busy_factor = 32, \
47 .imbalance_pct = 125, \
48 .cache_nice_tries = 1, \
49 .flags = SD_LOAD_BALANCE \
50 | SD_BALANCE_EXEC \
51 | SD_WAKE_BALANCE, \
52 .last_balance = jiffies, \
53 .balance_interval = 1, \
54 .nr_balance_failed = 0, \
55}
56
57#endif /* _ASM_MACH_TOPOLOGY_H */