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52708d690b
Orabug: 21896119 Use machine descriptor (MD) to get node latency values instead of just using default values. Testing: On an T5-8 system with: - total nodes = 8 - self latencies = 0x26d18 - latency to other nodes = 0x3a598 => latency ratio = ~1.5 output of numactl --hardware - before fix: node distances: node 0 1 2 3 4 5 6 7 0: 10 20 20 20 20 20 20 20 1: 20 10 20 20 20 20 20 20 2: 20 20 10 20 20 20 20 20 3: 20 20 20 10 20 20 20 20 4: 20 20 20 20 10 20 20 20 5: 20 20 20 20 20 10 20 20 6: 20 20 20 20 20 20 10 20 7: 20 20 20 20 20 20 20 10 - after fix: node distances: node 0 1 2 3 4 5 6 7 0: 10 15 15 15 15 15 15 15 1: 15 10 15 15 15 15 15 15 2: 15 15 10 15 15 15 15 15 3: 15 15 15 10 15 15 15 15 4: 15 15 15 15 10 15 15 15 5: 15 15 15 15 15 10 15 15 6: 15 15 15 15 15 15 10 15 7: 15 15 15 15 15 15 15 10 Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com> Reviewed-by: Chris Hyser <chris.hyser@oracle.com> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#ifndef _ASM_SPARC64_TOPOLOGY_H
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#define _ASM_SPARC64_TOPOLOGY_H
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#ifdef CONFIG_NUMA
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#include <asm/mmzone.h>
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static inline int cpu_to_node(int cpu)
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{
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return numa_cpu_lookup_table[cpu];
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}
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#define parent_node(node) (node)
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#define cpumask_of_node(node) ((node) == -1 ? \
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cpu_all_mask : \
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&numa_cpumask_lookup_table[node])
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struct pci_bus;
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#ifdef CONFIG_PCI
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int pcibus_to_node(struct pci_bus *pbus);
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#else
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static inline int pcibus_to_node(struct pci_bus *pbus)
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{
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return -1;
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}
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#endif
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#define cpumask_of_pcibus(bus) \
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(pcibus_to_node(bus) == -1 ? \
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cpu_all_mask : \
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cpumask_of_node(pcibus_to_node(bus)))
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int __node_distance(int, int);
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#define node_distance(a, b) __node_distance(a, b)
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#else /* CONFIG_NUMA */
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#include <asm-generic/topology.h>
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#endif /* !(CONFIG_NUMA) */
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#ifdef CONFIG_SMP
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#define topology_physical_package_id(cpu) (cpu_data(cpu).proc_id)
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#define topology_core_id(cpu) (cpu_data(cpu).core_id)
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#define topology_core_cpumask(cpu) (&cpu_core_sib_map[cpu])
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#define topology_sibling_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
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#endif /* CONFIG_SMP */
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extern cpumask_t cpu_core_map[NR_CPUS];
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extern cpumask_t cpu_core_sib_map[NR_CPUS];
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static inline const struct cpumask *cpu_coregroup_mask(int cpu)
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{
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return &cpu_core_map[cpu];
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}
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#endif /* _ASM_SPARC64_TOPOLOGY_H */
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