LXR linux/arch/powerpc/include/asm/topology.h

   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 * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
  13 * all zones on all nodes will be eligible for zone_reclaim().
  14 */
  15#define RECLAIM_DISTANCE 10
  16
  17#include <asm/mmzone.h>
  18
  19#define parent_node(node)       (node)
  20
  21#define cpumask_of_node(node) ((node) == -1 ?                           \
  22                               cpu_all_mask :                           \
  23                               node_to_cpumask_map[node])
  24
  25struct pci_bus;
  26#ifdef CONFIG_PCI
  27extern int pcibus_to_node(struct pci_bus *bus);
  28#else
  29static inline int pcibus_to_node(struct pci_bus *bus)
  30{
  31        return -1;
  32}
  33#endif
  34
  35#define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
  36                                 cpu_all_mask :                         \
  37                                 cpumask_of_node(pcibus_to_node(bus)))
  38
  39extern int __node_distance(int, int);
  40#define node_distance(a, b) __node_distance(a, b)
  41
  42extern void __init dump_numa_cpu_topology(void);
  43
  44extern int sysfs_add_device_to_node(struct device *dev, int nid);
  45extern void sysfs_remove_device_from_node(struct device *dev, int nid);
  46
  47#else
  48
  49static inline void dump_numa_cpu_topology(void) {}
  50
  51static inline int sysfs_add_device_to_node(struct device *dev, int nid)
  52{
  53        return 0;
  54}
  55
  56static inline void sysfs_remove_device_from_node(struct device *dev,
  57                                                int nid)
  58{
  59}
  60#endif /* CONFIG_NUMA */
  61
  62#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
  63extern int start_topology_update(void);
  64extern int stop_topology_update(void);
  65extern int prrn_is_enabled(void);
  66#else
  67static inline int start_topology_update(void)
  68{
  69        return 0;
  70}
  71static inline int stop_topology_update(void)
  72{
  73        return 0;
  74}
  75static inline int prrn_is_enabled(void)
  76{
  77        return 0;
  78}
  79#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
  80
  81#include <asm-generic/topology.h>
  82
  83#ifdef CONFIG_SMP
  84#include <asm/cputable.h>
  85
  86#ifdef CONFIG_PPC64
  87#include <asm/smp.h>
  88
  89#define topology_physical_package_id(cpu)       (cpu_to_chip_id(cpu))
  90#define topology_sibling_cpumask(cpu)   (per_cpu(cpu_sibling_map, cpu))
  91#define topology_core_cpumask(cpu)      (per_cpu(cpu_core_map, cpu))
  92#define topology_core_id(cpu)           (cpu_to_core_id(cpu))
  93#endif
  94#endif
  95
  96#endif /* __KERNEL__ */
  97#endif  /* _ASM_POWERPC_TOPOLOGY_H */
  98