tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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#include <asm/mmzone.h>
12
13static inline int cpu_to_node(int cpu)
14{
15 return numa_cpu_lookup_table[cpu];
16}
17
18#define parent_node(node) (node)
19
20static inline cpumask_t node_to_cpumask(int node)
21{
22 return numa_cpumask_lookup_table[node];
23}
24
25#define cpumask_of_node(node) (&numa_cpumask_lookup_table[node])
26
27int of_node_to_nid(struct device_node *device);
28
29struct pci_bus;
30#ifdef CONFIG_PCI
31extern int pcibus_to_node(struct pci_bus *bus);
32#else
33static inline int pcibus_to_node(struct pci_bus *bus)
34{
35 return -1;
36}
37#endif
38
39#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
40 CPU_MASK_ALL : \
41 node_to_cpumask(pcibus_to_node(bus)) \
42 )
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
48/* sched_domains SD_NODE_INIT for PPC64 machines */
49#define SD_NODE_INIT (struct sched_domain) { \
50 .parent = NULL, \
51 .child = NULL, \
52 .groups = NULL, \
53 .min_interval = 8, \
54 .max_interval = 32, \
55 .busy_factor = 32, \
56 .imbalance_pct = 125, \
57 .cache_nice_tries = 1, \
58 .busy_idx = 3, \
59 .idle_idx = 1, \
60 .newidle_idx = 2, \
61 .wake_idx = 1, \
62 .flags = SD_LOAD_BALANCE \
63 | SD_BALANCE_EXEC \
64 | SD_BALANCE_NEWIDLE \
65 | SD_WAKE_IDLE \
66 | SD_SERIALIZE \
67 | SD_WAKE_BALANCE, \
68 .last_balance = jiffies, \
69 .balance_interval = 1, \
70 .nr_balance_failed = 0, \
71}
72
73extern void __init dump_numa_cpu_topology(void);
74
75extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
76extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
77
78#else
79
80static inline int of_node_to_nid(struct device_node *device)
81{
82 return 0;
83}
84
85static inline void dump_numa_cpu_topology(void) {}
86
87static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
88{
89 return 0;
90}
91
92static inline void sysfs_remove_device_from_node(struct sys_device *dev,
93 int nid)
94{
95}
96
97#endif /* CONFIG_NUMA */
98
99#include <asm-generic/topology.h>
100
101#ifdef CONFIG_SMP
102#include <asm/cputable.h>
103#define smt_capable() (cpu_has_feature(CPU_FTR_SMT))
104
105#ifdef CONFIG_PPC64
106#include <asm/smp.h>
107
108#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
109#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
110#define topology_thread_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
111#define topology_core_cpumask(cpu) (&per_cpu(cpu_core_map, cpu))
112#define topology_core_id(cpu) (cpu_to_core_id(cpu))
113#endif
114#endif
115
116#endif /* __KERNEL__ */
117#endif /* _ASM_POWERPC_TOPOLOGY_H */