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Linux kernel mirror (for testing)
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kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_TOPOLOGY_H
3#define _ASM_POWERPC_TOPOLOGY_H
4#ifdef __KERNEL__
5
6
7struct device;
8struct device_node;
9
10#ifdef CONFIG_NUMA
11
12/*
13 * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
14 * all zones on all nodes will be eligible for zone_reclaim().
15 */
16#define RECLAIM_DISTANCE 10
17
18#include <asm/mmzone.h>
19
20#define cpumask_of_node(node) ((node) == -1 ? \
21 cpu_all_mask : \
22 node_to_cpumask_map[node])
23
24struct pci_bus;
25#ifdef CONFIG_PCI
26extern int pcibus_to_node(struct pci_bus *bus);
27#else
28static inline int pcibus_to_node(struct pci_bus *bus)
29{
30 return -1;
31}
32#endif
33
34#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
35 cpu_all_mask : \
36 cpumask_of_node(pcibus_to_node(bus)))
37
38extern int __node_distance(int, int);
39#define node_distance(a, b) __node_distance(a, b)
40
41extern void __init dump_numa_cpu_topology(void);
42
43extern int sysfs_add_device_to_node(struct device *dev, int nid);
44extern void sysfs_remove_device_from_node(struct device *dev, int nid);
45extern int numa_update_cpu_topology(bool cpus_locked);
46
47static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node)
48{
49 numa_cpu_lookup_table[cpu] = node;
50}
51
52static inline int early_cpu_to_node(int cpu)
53{
54 int nid;
55
56 nid = numa_cpu_lookup_table[cpu];
57
58 /*
59 * Fall back to node 0 if nid is unset (it should be, except bugs).
60 * This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)).
61 */
62 return (nid < 0) ? 0 : nid;
63}
64#else
65
66static inline int early_cpu_to_node(int cpu) { return 0; }
67
68static inline void dump_numa_cpu_topology(void) {}
69
70static inline int sysfs_add_device_to_node(struct device *dev, int nid)
71{
72 return 0;
73}
74
75static inline void sysfs_remove_device_from_node(struct device *dev,
76 int nid)
77{
78}
79
80static inline int numa_update_cpu_topology(bool cpus_locked)
81{
82 return 0;
83}
84
85static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
86
87#endif /* CONFIG_NUMA */
88
89#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
90extern int start_topology_update(void);
91extern int stop_topology_update(void);
92extern int prrn_is_enabled(void);
93extern int find_and_online_cpu_nid(int cpu);
94extern int timed_topology_update(int nsecs);
95extern void __init shared_proc_topology_init(void);
96#else
97static inline int start_topology_update(void)
98{
99 return 0;
100}
101static inline int stop_topology_update(void)
102{
103 return 0;
104}
105static inline int prrn_is_enabled(void)
106{
107 return 0;
108}
109static inline int find_and_online_cpu_nid(int cpu)
110{
111 return 0;
112}
113static inline int timed_topology_update(int nsecs)
114{
115 return 0;
116}
117
118#ifdef CONFIG_SMP
119static inline void shared_proc_topology_init(void) {}
120#endif
121#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
122
123#include <asm-generic/topology.h>
124
125#ifdef CONFIG_SMP
126#include <asm/cputable.h>
127
128#ifdef CONFIG_PPC64
129#include <asm/smp.h>
130
131#define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu))
132#define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
133#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
134#define topology_core_id(cpu) (cpu_to_core_id(cpu))
135#endif
136#endif
137
138#endif /* __KERNEL__ */
139#endif /* _ASM_POWERPC_TOPOLOGY_H */