2005-04-16 18:20:36 -04:00
|
|
|
/*
|
|
|
|
|
* Copyright (C) 2002, Erich Focht, NEC
|
|
|
|
|
*
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
* (at your option) any later version.
|
|
|
|
|
*/
|
|
|
|
|
#ifndef _ASM_IA64_TOPOLOGY_H
|
|
|
|
|
#define _ASM_IA64_TOPOLOGY_H
|
|
|
|
|
|
|
|
|
|
#include <asm/acpi.h>
|
|
|
|
|
#include <asm/numa.h>
|
|
|
|
|
#include <asm/smp.h>
|
|
|
|
|
|
|
|
|
|
#ifdef CONFIG_NUMA
|
2006-01-17 16:42:46 -05:00
|
|
|
|
|
|
|
|
/* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
|
|
|
|
|
#define PENALTY_FOR_NODE_WITH_CPUS 255
|
|
|
|
|
|
2006-04-13 21:23:53 -04:00
|
|
|
/*
|
|
|
|
|
* Distance above which we begin to use zone reclaim
|
|
|
|
|
*/
|
|
|
|
|
#define RECLAIM_DISTANCE 15
|
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
/*
|
|
|
|
|
* Returns the number of the node containing CPU 'cpu'
|
|
|
|
|
*/
|
|
|
|
|
#define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Returns a bitmask of CPUs on Node 'node'.
|
|
|
|
|
*/
|
|
|
|
|
#define node_to_cpumask(node) (node_to_cpu_mask[node])
|
2008-12-26 06:53:40 -05:00
|
|
|
#define cpumask_of_node(node) (&node_to_cpu_mask[node])
|
2005-04-16 18:20:36 -04:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Returns the number of the node containing Node 'nid'.
|
|
|
|
|
* Not implemented here. Multi-level hierarchies detected with
|
|
|
|
|
* the help of node_distance().
|
|
|
|
|
*/
|
|
|
|
|
#define parent_node(nid) (nid)
|
|
|
|
|
|
2005-07-07 19:59:00 -04:00
|
|
|
/*
|
|
|
|
|
* Determines the node for a given pci bus
|
|
|
|
|
*/
|
|
|
|
|
#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
|
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
void build_cpu_to_node_map(void);
|
|
|
|
|
|
2005-06-25 17:57:21 -04:00
|
|
|
#define SD_CPU_INIT (struct sched_domain) { \
|
|
|
|
|
.parent = NULL, \
|
2006-10-03 04:14:08 -04:00
|
|
|
.child = NULL, \
|
2005-06-25 17:57:21 -04:00
|
|
|
.groups = NULL, \
|
|
|
|
|
.min_interval = 1, \
|
|
|
|
|
.max_interval = 4, \
|
|
|
|
|
.busy_factor = 64, \
|
|
|
|
|
.imbalance_pct = 125, \
|
|
|
|
|
.cache_nice_tries = 2, \
|
|
|
|
|
.busy_idx = 2, \
|
|
|
|
|
.idle_idx = 1, \
|
|
|
|
|
.newidle_idx = 2, \
|
|
|
|
|
.wake_idx = 1, \
|
|
|
|
|
.forkexec_idx = 1, \
|
|
|
|
|
.flags = SD_LOAD_BALANCE \
|
|
|
|
|
| SD_BALANCE_NEWIDLE \
|
|
|
|
|
| SD_BALANCE_EXEC \
|
|
|
|
|
| SD_WAKE_AFFINE, \
|
|
|
|
|
.last_balance = jiffies, \
|
|
|
|
|
.balance_interval = 1, \
|
|
|
|
|
.nr_balance_failed = 0, \
|
|
|
|
|
}
|
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
/* sched_domains SD_NODE_INIT for IA64 NUMA machines */
|
|
|
|
|
#define SD_NODE_INIT (struct sched_domain) { \
|
|
|
|
|
.parent = NULL, \
|
2006-10-03 04:14:08 -04:00
|
|
|
.child = NULL, \
|
2005-04-16 18:20:36 -04:00
|
|
|
.groups = NULL, \
|
2005-06-25 17:57:21 -04:00
|
|
|
.min_interval = 8, \
|
2009-01-15 15:09:44 -05:00
|
|
|
.max_interval = 8*(min(num_online_cpus(), 32U)), \
|
2005-06-25 17:57:21 -04:00
|
|
|
.busy_factor = 64, \
|
2005-04-16 18:20:36 -04:00
|
|
|
.imbalance_pct = 125, \
|
2005-06-25 17:57:21 -04:00
|
|
|
.cache_nice_tries = 2, \
|
|
|
|
|
.busy_idx = 3, \
|
|
|
|
|
.idle_idx = 2, \
|
2008-04-15 01:04:23 -04:00
|
|
|
.newidle_idx = 2, \
|
2005-06-25 17:57:21 -04:00
|
|
|
.wake_idx = 1, \
|
|
|
|
|
.forkexec_idx = 1, \
|
2005-04-16 18:20:36 -04:00
|
|
|
.flags = SD_LOAD_BALANCE \
|
|
|
|
|
| SD_BALANCE_EXEC \
|
2005-06-25 17:57:21 -04:00
|
|
|
| SD_BALANCE_FORK \
|
2006-12-10 05:20:29 -05:00
|
|
|
| SD_SERIALIZE \
|
2005-04-16 18:20:36 -04:00
|
|
|
| SD_WAKE_BALANCE, \
|
|
|
|
|
.last_balance = jiffies, \
|
2005-06-25 17:57:21 -04:00
|
|
|
.balance_interval = 64, \
|
2005-04-16 18:20:36 -04:00
|
|
|
.nr_balance_failed = 0, \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_NUMA */
|
|
|
|
|
|
[PATCH] Export cpu topology in sysfs
The patch implements cpu topology exportation by sysfs.
Items (attributes) are similar to /proc/cpuinfo.
1) /sys/devices/system/cpu/cpuX/topology/physical_package_id:
represent the physical package id of cpu X;
2) /sys/devices/system/cpu/cpuX/topology/core_id:
represent the cpu core id to cpu X;
3) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
represent the thread siblings to cpu X in the same core;
4) /sys/devices/system/cpu/cpuX/topology/core_siblings:
represent the thread siblings to cpu X in the same physical package;
To implement it in an architecture-neutral way, a new source file,
driver/base/topology.c, is to export the 5 attributes.
If one architecture wants to support this feature, it just needs to
implement 4 defines, typically in file include/asm-XXX/topology.h.
The 4 defines are:
#define topology_physical_package_id(cpu)
#define topology_core_id(cpu)
#define topology_thread_siblings(cpu)
#define topology_core_siblings(cpu)
The type of **_id is int.
The type of siblings is cpumask_t.
To be consistent on all architectures, the 4 attributes should have
deafult values if their values are unavailable. Below is the rule.
1) physical_package_id: If cpu has no physical package id, -1 is the
default value.
2) core_id: If cpu doesn't support multi-core, its core id is 0.
3) thread_siblings: Just include itself, if the cpu doesn't support
HT/multi-thread.
4) core_siblings: Just include itself, if the cpu doesn't support
multi-core and HT/Multi-thread.
So be careful when declaring the 4 defines in include/asm-XXX/topology.h.
If an attribute isn't defined on an architecture, it won't be exported.
Thank Nathan, Greg, Andi, Paul and Venki.
The patch provides defines for i386/x86_64/ia64.
Signed-off-by: Zhang, Yanmin <yanmin.zhang@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03 06:04:36 -05:00
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
|
#define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id)
|
|
|
|
|
#define topology_core_id(cpu) (cpu_data(cpu)->core_id)
|
|
|
|
|
#define topology_core_siblings(cpu) (cpu_core_map[cpu])
|
2007-10-16 04:24:05 -04:00
|
|
|
#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
|
2008-12-31 18:42:21 -05:00
|
|
|
#define topology_core_cpumask(cpu) (&cpu_core_map[cpu])
|
|
|
|
|
#define topology_thread_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu))
|
2006-06-27 05:54:42 -04:00
|
|
|
#define smt_capable() (smp_num_siblings > 1)
|
[PATCH] Export cpu topology in sysfs
The patch implements cpu topology exportation by sysfs.
Items (attributes) are similar to /proc/cpuinfo.
1) /sys/devices/system/cpu/cpuX/topology/physical_package_id:
represent the physical package id of cpu X;
2) /sys/devices/system/cpu/cpuX/topology/core_id:
represent the cpu core id to cpu X;
3) /sys/devices/system/cpu/cpuX/topology/thread_siblings:
represent the thread siblings to cpu X in the same core;
4) /sys/devices/system/cpu/cpuX/topology/core_siblings:
represent the thread siblings to cpu X in the same physical package;
To implement it in an architecture-neutral way, a new source file,
driver/base/topology.c, is to export the 5 attributes.
If one architecture wants to support this feature, it just needs to
implement 4 defines, typically in file include/asm-XXX/topology.h.
The 4 defines are:
#define topology_physical_package_id(cpu)
#define topology_core_id(cpu)
#define topology_thread_siblings(cpu)
#define topology_core_siblings(cpu)
The type of **_id is int.
The type of siblings is cpumask_t.
To be consistent on all architectures, the 4 attributes should have
deafult values if their values are unavailable. Below is the rule.
1) physical_package_id: If cpu has no physical package id, -1 is the
default value.
2) core_id: If cpu doesn't support multi-core, its core id is 0.
3) thread_siblings: Just include itself, if the cpu doesn't support
HT/multi-thread.
4) core_siblings: Just include itself, if the cpu doesn't support
multi-core and HT/Multi-thread.
So be careful when declaring the 4 defines in include/asm-XXX/topology.h.
If an attribute isn't defined on an architecture, it won't be exported.
Thank Nathan, Greg, Andi, Paul and Venki.
The patch provides defines for i386/x86_64/ia64.
Signed-off-by: Zhang, Yanmin <yanmin.zhang@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03 06:04:36 -05:00
|
|
|
#endif
|
|
|
|
|
|
2008-04-29 18:05:29 -04:00
|
|
|
extern void arch_fix_phys_package_id(int num, u32 slot);
|
|
|
|
|
|
2008-12-26 06:53:40 -05:00
|
|
|
#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
|
|
|
|
|
cpu_all_mask : \
|
2009-01-06 10:19:22 -05:00
|
|
|
cpumask_of_node(pcibus_to_node(bus)))
|
2008-12-26 06:53:40 -05:00
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
|
|
|
|
|
|
#endif /* _ASM_IA64_TOPOLOGY_H */
|
