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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_TOPOLOGY_H #define _ASM_POWERPC_TOPOLOGY_H #ifdef __KERNEL__ struct device; struct device_node; #ifdef CONFIG_NUMA /* * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that * all zones on all nodes will be eligible for zone_reclaim(). */ #define RECLAIM_DISTANCE 10 #include <asm/mmzone.h> #define cpumask_of_node(node) ((node) == -1 ? \ cpu_all_mask : \ node_to_cpumask_map[node]) struct pci_bus; #ifdef CONFIG_PCI extern int pcibus_to_node(struct pci_bus *bus); #else static inline int pcibus_to_node(struct pci_bus *bus) { return -1; } #endif #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ cpu_all_mask : \ cpumask_of_node(pcibus_to_node(bus))) extern int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc); extern int __node_distance(int, int); #define node_distance(a, b) __node_distance(a, b) extern void __init dump_numa_cpu_topology(void); extern int sysfs_add_device_to_node(struct device *dev, int nid); extern void sysfs_remove_device_from_node(struct device *dev, int nid); extern int numa_update_cpu_topology(bool cpus_locked); static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) { numa_cpu_lookup_table[cpu] = node; } static inline int early_cpu_to_node(int cpu) { int nid; nid = numa_cpu_lookup_table[cpu]; /* * Fall back to node 0 if nid is unset (it should be, except bugs). * This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)). */ return (nid < 0) ? 0 : nid; } #else static inline int early_cpu_to_node(int cpu) { return 0; } static inline void dump_numa_cpu_topology(void) {} static inline int sysfs_add_device_to_node(struct device *dev, int nid) { return 0; } static inline void sysfs_remove_device_from_node(struct device *dev, int nid) { } static inline int numa_update_cpu_topology(bool cpus_locked) { return 0; } static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {} static inline int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc) { return 0; } #endif /* CONFIG_NUMA */ #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR) extern int start_topology_update(void); extern int stop_topology_update(void); extern int prrn_is_enabled(void); extern int find_and_online_cpu_nid(int cpu); extern int timed_topology_update(int nsecs); extern void __init shared_proc_topology_init(void); #else static inline int start_topology_update(void) { return 0; } static inline int stop_topology_update(void) { return 0; } static inline int prrn_is_enabled(void) { return 0; } static inline int find_and_online_cpu_nid(int cpu) { return 0; } static inline int timed_topology_update(int nsecs) { return 0; } #ifdef CONFIG_SMP static inline void shared_proc_topology_init(void) {} #endif #endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */ #include <asm-generic/topology.h> #ifdef CONFIG_SMP #include <asm/cputable.h> #ifdef CONFIG_PPC64 #include <asm/smp.h> #define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu)) #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) #define topology_core_id(cpu) (cpu_to_core_id(cpu)) int dlpar_cpu_readd(int cpu); #endif #endif #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_TOPOLOGY_H */