4b703a2317
We used to print a NUMA cpu summary at boot before the hotplug cpu code was added. This has been useful for catching machine configuration as well as firmware bugs in the past. This patch restores that functionality. An example of the output is: Node 0 CPUs: 0-7 Node 1 CPUs: 8-15 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
#ifndef _ASM_POWERPC_TOPOLOGY_H
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#define _ASM_POWERPC_TOPOLOGY_H
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#include <linux/config.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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static inline cpumask_t node_to_cpumask(int node)
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{
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return numa_cpumask_lookup_table[node];
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}
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static inline int node_to_first_cpu(int node)
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{
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cpumask_t tmp;
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tmp = node_to_cpumask(node);
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return first_cpu(tmp);
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}
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#define pcibus_to_node(node) (-1)
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#define pcibus_to_cpumask(bus) (cpu_online_map)
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/* sched_domains SD_NODE_INIT for PPC64 machines */
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#define SD_NODE_INIT (struct sched_domain) { \
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.span = CPU_MASK_NONE, \
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.parent = NULL, \
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.groups = NULL, \
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.min_interval = 8, \
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.max_interval = 32, \
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.busy_factor = 32, \
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.imbalance_pct = 125, \
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.cache_hot_time = (10*1000000), \
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.cache_nice_tries = 1, \
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.per_cpu_gain = 100, \
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.busy_idx = 3, \
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.idle_idx = 1, \
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.newidle_idx = 2, \
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.wake_idx = 1, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_EXEC \
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| SD_BALANCE_NEWIDLE \
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| SD_WAKE_IDLE \
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| SD_WAKE_BALANCE, \
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.last_balance = jiffies, \
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.balance_interval = 1, \
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.nr_balance_failed = 0, \
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}
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extern void __init dump_numa_cpu_topology(void);
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#else
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static inline void dump_numa_cpu_topology(void) {}
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#include <asm-generic/topology.h>
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#endif /* CONFIG_NUMA */
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#endif /* _ASM_POWERPC_TOPOLOGY_H */
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