1d1e9f0421
pcibus_to_node can return -1 if we cannot determine which node a pci bus is on. If passed -1, cpumask_of_node will negatively index the lookup array and pull in random data: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus 00000000,00000003,00000000,00000000 # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 64-65 Change cpumask_of_node to check for -1 and return cpu_all_mask in this case: # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus ffffffff,ffffffff,ffffffff,ffffffff # cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist 0-127 Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
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* Copyright (C) 2002, Erich Focht, NEC
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _ASM_IA64_TOPOLOGY_H
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#define _ASM_IA64_TOPOLOGY_H
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#include <asm/acpi.h>
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#include <asm/numa.h>
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#include <asm/smp.h>
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#ifdef CONFIG_NUMA
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/* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
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#define PENALTY_FOR_NODE_WITH_CPUS 255
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/*
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* Distance above which we begin to use zone reclaim
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*/
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#define RECLAIM_DISTANCE 15
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/*
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* Returns the number of the node containing CPU 'cpu'
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*/
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#define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
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/*
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* Returns a bitmask of CPUs on Node 'node'.
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*/
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#define cpumask_of_node(node) ((node) == -1 ? \
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cpu_all_mask : \
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&node_to_cpu_mask[node])
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/*
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* Returns the number of the node containing Node 'nid'.
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* Not implemented here. Multi-level hierarchies detected with
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* the help of node_distance().
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*/
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#define parent_node(nid) (nid)
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/*
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* Determines the node for a given pci bus
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*/
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#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
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void build_cpu_to_node_map(void);
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#define SD_CPU_INIT (struct sched_domain) { \
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.parent = NULL, \
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.child = NULL, \
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.groups = NULL, \
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.min_interval = 1, \
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.max_interval = 4, \
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.busy_factor = 64, \
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.imbalance_pct = 125, \
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.cache_nice_tries = 2, \
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.busy_idx = 2, \
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.idle_idx = 1, \
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.newidle_idx = 0, \
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.wake_idx = 0, \
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.forkexec_idx = 0, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_NEWIDLE \
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| SD_BALANCE_EXEC \
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| SD_BALANCE_FORK \
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| SD_WAKE_AFFINE, \
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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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/* sched_domains SD_NODE_INIT for IA64 NUMA machines */
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#define SD_NODE_INIT (struct sched_domain) { \
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.parent = NULL, \
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.child = NULL, \
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.groups = NULL, \
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.min_interval = 8, \
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.max_interval = 8*(min(num_online_cpus(), 32U)), \
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.busy_factor = 64, \
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.imbalance_pct = 125, \
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.cache_nice_tries = 2, \
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.busy_idx = 3, \
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.idle_idx = 2, \
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.newidle_idx = 0, \
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.wake_idx = 0, \
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.forkexec_idx = 0, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_NEWIDLE \
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| SD_BALANCE_EXEC \
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| SD_BALANCE_FORK \
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| SD_SERIALIZE, \
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.last_balance = jiffies, \
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.balance_interval = 64, \
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.nr_balance_failed = 0, \
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}
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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)->socket_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_map[cpu])
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#define topology_thread_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
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#define smt_capable() (smp_num_siblings > 1)
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#endif
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extern void arch_fix_phys_package_id(int num, u32 slot);
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#define cpumask_of_pcibus(bus) (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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#include <asm-generic/topology.h>
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#endif /* _ASM_IA64_TOPOLOGY_H */
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