mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
cb83b629ba
The current code groups up to 16 nodes in a level and then puts an ALLNODES domain spanning the entire tree on top of that. This doesn't reflect the numa topology and esp for the smaller not-fully-connected machines out there today this might make a difference. Therefore, build a proper numa topology based on node_distance(). Since there's no fixed numa layers anymore, the static SD_NODE_INIT and SD_ALLNODES_INIT aren't usable anymore, the new code tries to construct something similar and scales some values either on the number of cpus in the domain and/or the node_distance() ratio. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: linux-alpha@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-sh@vger.kernel.org Cc: Matt Turner <mattst88@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: sparclinux@vger.kernel.org Cc: Tony Luck <tony.luck@intel.com> Cc: x86@kernel.org Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Greg Pearson <greg.pearson@hp.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: bob.picco@oracle.com Cc: chris.mason@oracle.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/n/tip-r74n3n8hhuc2ynbrnp3vt954@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
159 lines
4.0 KiB
C
159 lines
4.0 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_X86_32
|
|
# ifdef CONFIG_X86_HT
|
|
# define ENABLE_TOPO_DEFINES
|
|
# endif
|
|
#else
|
|
# ifdef CONFIG_SMP
|
|
# define ENABLE_TOPO_DEFINES
|
|
# endif
|
|
#endif
|
|
|
|
/*
|
|
* to preserve the visibility of NUMA_NO_NODE definition,
|
|
* moved to there from here. May be used independent of
|
|
* CONFIG_NUMA.
|
|
*/
|
|
#include <linux/numa.h>
|
|
|
|
#ifdef CONFIG_NUMA
|
|
#include <linux/cpumask.h>
|
|
|
|
#include <asm/mpspec.h>
|
|
|
|
/* Mappings between logical cpu number and node number */
|
|
DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
|
|
|
|
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
|
|
/*
|
|
* override generic percpu implementation of cpu_to_node
|
|
*/
|
|
extern int __cpu_to_node(int cpu);
|
|
#define cpu_to_node __cpu_to_node
|
|
|
|
extern int early_cpu_to_node(int cpu);
|
|
|
|
#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
|
|
|
|
/* Same function but used if called before per_cpu areas are setup */
|
|
static inline int early_cpu_to_node(int cpu)
|
|
{
|
|
return early_per_cpu(x86_cpu_to_node_map, cpu);
|
|
}
|
|
|
|
#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
|
|
|
|
/* Mappings between node number and cpus on that node. */
|
|
extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
|
|
|
|
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
|
|
extern const struct cpumask *cpumask_of_node(int node);
|
|
#else
|
|
/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
|
|
static inline const struct cpumask *cpumask_of_node(int node)
|
|
{
|
|
return node_to_cpumask_map[node];
|
|
}
|
|
#endif
|
|
|
|
extern void setup_node_to_cpumask_map(void);
|
|
|
|
/*
|
|
* 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)
|
|
|
|
#define pcibus_to_node(bus) __pcibus_to_node(bus)
|
|
|
|
extern int __node_distance(int, int);
|
|
#define node_distance(a, b) __node_distance(a, b)
|
|
|
|
#else /* !CONFIG_NUMA */
|
|
|
|
static inline int numa_node_id(void)
|
|
{
|
|
return 0;
|
|
}
|
|
/*
|
|
* indicate override:
|
|
*/
|
|
#define numa_node_id numa_node_id
|
|
|
|
static inline int early_cpu_to_node(int cpu)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void setup_node_to_cpumask_map(void) { }
|
|
|
|
#endif
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
extern const struct cpumask *cpu_coregroup_mask(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_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
|
|
#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
|
|
|
|
/* indicates that pointers to the topology cpumask_t maps are valid */
|
|
#define arch_provides_topology_pointers yes
|
|
#endif
|
|
|
|
static inline void arch_fix_phys_package_id(int num, u32 slot)
|
|
{
|
|
}
|
|
|
|
struct pci_bus;
|
|
void x86_pci_root_bus_resources(int bus, struct list_head *resources);
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define mc_capable() ((boot_cpu_data.x86_max_cores > 1) && \
|
|
(cpumask_weight(cpu_core_mask(0)) != nr_cpu_ids))
|
|
#define smt_capable() (smp_num_siblings > 1)
|
|
#endif
|
|
|
|
#ifdef CONFIG_NUMA
|
|
extern int get_mp_bus_to_node(int busnum);
|
|
extern void set_mp_bus_to_node(int busnum, int node);
|
|
#else
|
|
static inline int get_mp_bus_to_node(int busnum)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void set_mp_bus_to_node(int busnum, int node)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_TOPOLOGY_H */
|