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Linux kernel mirror (for testing)
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kernel
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linux
1#ifndef _ASM_POWERPC_TOPOLOGY_H
2#define _ASM_POWERPC_TOPOLOGY_H
3#ifdef __KERNEL__
4
5
6struct 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#include <asm/mmzone.h>
22
23static inline int cpu_to_node(int cpu)
24{
25 return numa_cpu_lookup_table[cpu];
26}
27
28#define parent_node(node) (node)
29
30#define cpumask_of_node(node) ((node) == -1 ? \
31 cpu_all_mask : \
32 node_to_cpumask_map[node])
33
34struct pci_bus;
35#ifdef CONFIG_PCI
36extern int pcibus_to_node(struct pci_bus *bus);
37#else
38static inline int pcibus_to_node(struct pci_bus *bus)
39{
40 return -1;
41}
42#endif
43
44#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
45 cpu_all_mask : \
46 cpumask_of_node(pcibus_to_node(bus)))
47
48extern int __node_distance(int, int);
49#define node_distance(a, b) __node_distance(a, b)
50
51extern void __init dump_numa_cpu_topology(void);
52
53extern int sysfs_add_device_to_node(struct device *dev, int nid);
54extern void sysfs_remove_device_from_node(struct device *dev, int nid);
55
56#else
57
58static inline void dump_numa_cpu_topology(void) {}
59
60static inline int sysfs_add_device_to_node(struct device *dev, int nid)
61{
62 return 0;
63}
64
65static inline void sysfs_remove_device_from_node(struct device *dev,
66 int nid)
67{
68}
69#endif /* CONFIG_NUMA */
70
71#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
72extern int start_topology_update(void);
73extern int stop_topology_update(void);
74extern int prrn_is_enabled(void);
75#else
76static inline int start_topology_update(void)
77{
78 return 0;
79}
80static inline int stop_topology_update(void)
81{
82 return 0;
83}
84static inline int prrn_is_enabled(void)
85{
86 return 0;
87}
88#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
89
90#include <asm-generic/topology.h>
91
92#ifdef CONFIG_SMP
93#include <asm/cputable.h>
94#define smt_capable() (cpu_has_feature(CPU_FTR_SMT))
95
96#ifdef CONFIG_PPC64
97#include <asm/smp.h>
98
99#define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu))
100#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
101#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
102#define topology_core_id(cpu) (cpu_to_core_id(cpu))
103#endif
104#endif
105
106#endif /* __KERNEL__ */
107#endif /* _ASM_POWERPC_TOPOLOGY_H */