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Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_POWERPC_TOPOLOGY_H
2#define _ASM_POWERPC_TOPOLOGY_H
3#ifdef __KERNEL__
4
5
6struct sys_device;
7struct device_node;
8
9#ifdef CONFIG_NUMA
10
11/*
12 * Before going off node we want the VM to try and reclaim from the local
13 * node. It does this if the remote distance is larger than RECLAIM_DISTANCE.
14 * With the default REMOTE_DISTANCE of 20 and the default RECLAIM_DISTANCE of
15 * 20, we never reclaim and go off node straight away.
16 *
17 * To fix this we choose a smaller value of RECLAIM_DISTANCE.
18 */
19#define RECLAIM_DISTANCE 10
20
21/*
22 * Before going off node we want the VM to try and reclaim from the local
23 * node. It does this if the remote distance is larger than RECLAIM_DISTANCE.
24 * With the default REMOTE_DISTANCE of 20 and the default RECLAIM_DISTANCE of
25 * 20, we never reclaim and go off node straight away.
26 *
27 * To fix this we choose a smaller value of RECLAIM_DISTANCE.
28 */
29#define RECLAIM_DISTANCE 10
30
31#include <asm/mmzone.h>
32
33static inline int cpu_to_node(int cpu)
34{
35 return numa_cpu_lookup_table[cpu];
36}
37
38#define parent_node(node) (node)
39
40#define cpumask_of_node(node) ((node) == -1 ? \
41 cpu_all_mask : \
42 node_to_cpumask_map[node])
43
44struct pci_bus;
45#ifdef CONFIG_PCI
46extern int pcibus_to_node(struct pci_bus *bus);
47#else
48static inline int pcibus_to_node(struct pci_bus *bus)
49{
50 return -1;
51}
52#endif
53
54#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
55 cpu_all_mask : \
56 cpumask_of_node(pcibus_to_node(bus)))
57
58/* sched_domains SD_NODE_INIT for PPC64 machines */
59#define SD_NODE_INIT (struct sched_domain) { \
60 .min_interval = 8, \
61 .max_interval = 32, \
62 .busy_factor = 32, \
63 .imbalance_pct = 125, \
64 .cache_nice_tries = 1, \
65 .busy_idx = 3, \
66 .idle_idx = 1, \
67 .newidle_idx = 0, \
68 .wake_idx = 0, \
69 .forkexec_idx = 0, \
70 \
71 .flags = 1*SD_LOAD_BALANCE \
72 | 1*SD_BALANCE_NEWIDLE \
73 | 1*SD_BALANCE_EXEC \
74 | 1*SD_BALANCE_FORK \
75 | 0*SD_BALANCE_WAKE \
76 | 0*SD_WAKE_AFFINE \
77 | 0*SD_PREFER_LOCAL \
78 | 0*SD_SHARE_CPUPOWER \
79 | 0*SD_POWERSAVINGS_BALANCE \
80 | 0*SD_SHARE_PKG_RESOURCES \
81 | 1*SD_SERIALIZE \
82 | 0*SD_PREFER_SIBLING \
83 , \
84 .last_balance = jiffies, \
85 .balance_interval = 1, \
86}
87
88extern int __node_distance(int, int);
89#define node_distance(a, b) __node_distance(a, b)
90
91extern void __init dump_numa_cpu_topology(void);
92
93extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
94extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
95
96#else
97
98static inline void dump_numa_cpu_topology(void) {}
99
100static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
101{
102 return 0;
103}
104
105static inline void sysfs_remove_device_from_node(struct sys_device *dev,
106 int nid)
107{
108}
109#endif /* CONFIG_NUMA */
110
111#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
112extern int start_topology_update(void);
113extern int stop_topology_update(void);
114#else
115static inline int start_topology_update(void)
116{
117 return 0;
118}
119static inline int stop_topology_update(void)
120{
121 return 0;
122}
123#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
124
125#include <asm-generic/topology.h>
126
127#ifdef CONFIG_SMP
128#include <asm/cputable.h>
129#define smt_capable() (cpu_has_feature(CPU_FTR_SMT))
130
131#ifdef CONFIG_PPC64
132#include <asm/smp.h>
133
134#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
135#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
136#define topology_core_id(cpu) (cpu_to_core_id(cpu))
137#endif
138#endif
139
140#endif /* __KERNEL__ */
141#endif /* _ASM_POWERPC_TOPOLOGY_H */