forked from Minki/linux
b447a468fc
Cleanup references to the early cpu maps for the non-SMP configuration and remove some functions called for SMP configurations only. Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
196 lines
4.9 KiB
C
196 lines
4.9 KiB
C
/*
|
|
* Written by: Matthew Dobson, IBM Corporation
|
|
*
|
|
* Copyright (C) 2002, IBM Corp.
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Send feedback to <colpatch@us.ibm.com>
|
|
*/
|
|
#ifndef _ASM_X86_TOPOLOGY_H
|
|
#define _ASM_X86_TOPOLOGY_H
|
|
|
|
#ifdef CONFIG_NUMA
|
|
#include <linux/cpumask.h>
|
|
#include <asm/mpspec.h>
|
|
|
|
/* Mappings between logical cpu number and node number */
|
|
#ifdef CONFIG_X86_32
|
|
extern int cpu_to_node_map[];
|
|
#else
|
|
/* Returns the number of the current Node. */
|
|
#define numa_node_id() (early_cpu_to_node(raw_smp_processor_id()))
|
|
#endif
|
|
|
|
DECLARE_PER_CPU(int, x86_cpu_to_node_map);
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern int x86_cpu_to_node_map_init[];
|
|
extern void *x86_cpu_to_node_map_early_ptr;
|
|
#else
|
|
#define x86_cpu_to_node_map_early_ptr NULL
|
|
#endif
|
|
|
|
extern cpumask_t node_to_cpumask_map[];
|
|
|
|
#define NUMA_NO_NODE (-1)
|
|
|
|
/* Returns the number of the node containing CPU 'cpu' */
|
|
#ifdef CONFIG_X86_32
|
|
#define early_cpu_to_node(cpu) cpu_to_node(cpu)
|
|
static inline int cpu_to_node(int cpu)
|
|
{
|
|
return cpu_to_node_map[cpu];
|
|
}
|
|
|
|
#else /* CONFIG_X86_64 */
|
|
|
|
#ifdef CONFIG_SMP
|
|
static inline int early_cpu_to_node(int cpu)
|
|
{
|
|
int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
|
|
|
|
if (cpu_to_node_map)
|
|
return cpu_to_node_map[cpu];
|
|
else if (per_cpu_offset(cpu))
|
|
return per_cpu(x86_cpu_to_node_map, cpu);
|
|
else
|
|
return NUMA_NO_NODE;
|
|
}
|
|
#else
|
|
#define early_cpu_to_node(cpu) cpu_to_node(cpu)
|
|
#endif
|
|
|
|
static inline int cpu_to_node(int cpu)
|
|
{
|
|
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
|
|
if (x86_cpu_to_node_map_early_ptr) {
|
|
printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n",
|
|
(int)cpu);
|
|
dump_stack();
|
|
return ((int *)x86_cpu_to_node_map_early_ptr)[cpu];
|
|
}
|
|
#endif
|
|
return per_cpu(x86_cpu_to_node_map, cpu);
|
|
}
|
|
#endif /* CONFIG_X86_64 */
|
|
|
|
/*
|
|
* Returns the number of the node containing Node 'node'. This
|
|
* architecture is flat, so it is a pretty simple function!
|
|
*/
|
|
#define parent_node(node) (node)
|
|
|
|
/* Returns a bitmask of CPUs on Node 'node'. */
|
|
static inline cpumask_t node_to_cpumask(int node)
|
|
{
|
|
return node_to_cpumask_map[node];
|
|
}
|
|
|
|
/* Returns the number of the first CPU on Node 'node'. */
|
|
static inline int node_to_first_cpu(int node)
|
|
{
|
|
cpumask_t mask = node_to_cpumask(node);
|
|
|
|
return first_cpu(mask);
|
|
}
|
|
|
|
#define pcibus_to_node(bus) __pcibus_to_node(bus)
|
|
#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus)
|
|
|
|
#ifdef CONFIG_X86_32
|
|
extern unsigned long node_start_pfn[];
|
|
extern unsigned long node_end_pfn[];
|
|
extern unsigned long node_remap_size[];
|
|
#define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
|
|
|
|
# ifdef CONFIG_X86_HT
|
|
# define ENABLE_TOPO_DEFINES
|
|
# endif
|
|
|
|
# define SD_CACHE_NICE_TRIES 1
|
|
# define SD_IDLE_IDX 1
|
|
# define SD_NEWIDLE_IDX 2
|
|
# define SD_FORKEXEC_IDX 0
|
|
|
|
#else
|
|
|
|
# ifdef CONFIG_SMP
|
|
# define ENABLE_TOPO_DEFINES
|
|
# endif
|
|
|
|
# define SD_CACHE_NICE_TRIES 2
|
|
# define SD_IDLE_IDX 2
|
|
# define SD_NEWIDLE_IDX 0
|
|
# define SD_FORKEXEC_IDX 1
|
|
|
|
#endif
|
|
|
|
/* sched_domains SD_NODE_INIT for NUMAQ machines */
|
|
#define SD_NODE_INIT (struct sched_domain) { \
|
|
.span = CPU_MASK_NONE, \
|
|
.parent = NULL, \
|
|
.child = NULL, \
|
|
.groups = NULL, \
|
|
.min_interval = 8, \
|
|
.max_interval = 32, \
|
|
.busy_factor = 32, \
|
|
.imbalance_pct = 125, \
|
|
.cache_nice_tries = SD_CACHE_NICE_TRIES, \
|
|
.busy_idx = 3, \
|
|
.idle_idx = SD_IDLE_IDX, \
|
|
.newidle_idx = SD_NEWIDLE_IDX, \
|
|
.wake_idx = 1, \
|
|
.forkexec_idx = SD_FORKEXEC_IDX, \
|
|
.flags = SD_LOAD_BALANCE \
|
|
| SD_BALANCE_EXEC \
|
|
| SD_BALANCE_FORK \
|
|
| SD_SERIALIZE \
|
|
| SD_WAKE_BALANCE, \
|
|
.last_balance = jiffies, \
|
|
.balance_interval = 1, \
|
|
.nr_balance_failed = 0, \
|
|
}
|
|
|
|
#ifdef CONFIG_X86_64_ACPI_NUMA
|
|
extern int __node_distance(int, int);
|
|
#define node_distance(a, b) __node_distance(a, b)
|
|
#endif
|
|
|
|
#else /* CONFIG_NUMA */
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#endif
|
|
|
|
extern cpumask_t cpu_coregroup_map(int cpu);
|
|
|
|
#ifdef ENABLE_TOPO_DEFINES
|
|
#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
|
|
#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
|
|
#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
|
|
#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
|
|
#endif
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define mc_capable() (boot_cpu_data.x86_max_cores > 1)
|
|
#define smt_capable() (smp_num_siblings > 1)
|
|
#endif
|
|
|
|
#endif
|