[deliverable/linux.git] / include / asm-x86 / topology.h

/*
 * 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 */
DECLARE_PER_CPU(u16, x86_cpu_to_node_map);
extern u16 __initdata x86_cpu_to_node_map_init[];
extern void *x86_cpu_to_node_map_early_ptr;
extern cpumask_t node_to_cpumask_map[];

#define NUMA_NO_NODE	((u16)(~0))

/* Returns the number of the node containing CPU 'cpu' */
static inline int cpu_to_node(int cpu)
{
	u16 *cpu_to_node_map = (u16 *)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;
}

/*
 * 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
Commit	Line	Data
3367e56f TG	1	/*
	2	* Written by: Matthew Dobson, IBM Corporation
	3	*
	4	* Copyright (C) 2002, IBM Corp.
	5	*
	6	* All rights reserved.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	16	* NON INFRINGEMENT. See the GNU General Public License for more
	17	* details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	22	*
	23	* Send feedback to <colpatch@us.ibm.com>
	24	*/
	25	#ifndef _ASM_X86_TOPOLOGY_H
	26	#define _ASM_X86_TOPOLOGY_H
	27
	28	#ifdef CONFIG_NUMA
	29	#include <linux/cpumask.h>
	30	#include <asm/mpspec.h>
	31
	32	/* Mappings between logical cpu number and node number */
df3825c5	33	DECLARE_PER_CPU(u16, x86_cpu_to_node_map);
	34	extern u16 __initdata x86_cpu_to_node_map_init[];
	35	extern void *x86_cpu_to_node_map_early_ptr;
3367e56f TG	36	extern cpumask_t node_to_cpumask_map[];
3367e56f TG	37
df3825c5	38	#define NUMA_NO_NODE ((u16)(~0))
df3825c5	39
3367e56f TG	40	/* Returns the number of the node containing CPU 'cpu' */
	41	static inline int cpu_to_node(int cpu)
	42	{
df3825c5	43	u16 cpu_to_node_map = (u16 )x86_cpu_to_node_map_early_ptr;
	44
	45	if (cpu_to_node_map)
	46	return cpu_to_node_map[cpu];
	47	else if (per_cpu_offset(cpu))
	48	return per_cpu(x86_cpu_to_node_map, cpu);
	49	else
	50	return NUMA_NO_NODE;
3367e56f TG	51	}
	52
	53	/*
	54	* Returns the number of the node containing Node 'node'. This
	55	* architecture is flat, so it is a pretty simple function!
	56	*/
	57	#define parent_node(node) (node)
	58
	59	/* Returns a bitmask of CPUs on Node 'node'. */
	60	static inline cpumask_t node_to_cpumask(int node)
	61	{
	62	return node_to_cpumask_map[node];
	63	}
	64
	65	/* Returns the number of the first CPU on Node 'node'. */
	66	static inline int node_to_first_cpu(int node)
	67	{
	68	cpumask_t mask = node_to_cpumask(node);
	69
	70	return first_cpu(mask);
	71	}
	72
	73	#define pcibus_to_node(bus) __pcibus_to_node(bus)
	74	#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus)
	75
96a388de	76	#ifdef CONFIG_X86_32
3367e56f TG	77	extern unsigned long node_start_pfn[];
	78	extern unsigned long node_end_pfn[];
	79	extern unsigned long node_remap_size[];
	80	#define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
	81
	82	# ifdef CONFIG_X86_HT
	83	# define ENABLE_TOPO_DEFINES
	84	# endif
	85
	86	# define SD_CACHE_NICE_TRIES 1
	87	# define SD_IDLE_IDX 1
	88	# define SD_NEWIDLE_IDX 2
	89	# define SD_FORKEXEC_IDX 0
	90
96a388de	91	#else
3367e56f TG	92
	93	# ifdef CONFIG_SMP
	94	# define ENABLE_TOPO_DEFINES
	95	# endif
	96
	97	# define SD_CACHE_NICE_TRIES 2
	98	# define SD_IDLE_IDX 2
	99	# define SD_NEWIDLE_IDX 0
	100	# define SD_FORKEXEC_IDX 1
	101
	102	#endif
	103
	104	/* sched_domains SD_NODE_INIT for NUMAQ machines */
	105	#define SD_NODE_INIT (struct sched_domain) { \
	106	.span = CPU_MASK_NONE, \
	107	.parent = NULL, \
	108	.child = NULL, \
	109	.groups = NULL, \
	110	.min_interval = 8, \
	111	.max_interval = 32, \
	112	.busy_factor = 32, \
	113	.imbalance_pct = 125, \
	114	.cache_nice_tries = SD_CACHE_NICE_TRIES, \
	115	.busy_idx = 3, \
	116	.idle_idx = SD_IDLE_IDX, \
	117	.newidle_idx = SD_NEWIDLE_IDX, \
	118	.wake_idx = 1, \
	119	.forkexec_idx = SD_FORKEXEC_IDX, \
	120	.flags = SD_LOAD_BALANCE \
	121	\| SD_BALANCE_EXEC \
	122	\| SD_BALANCE_FORK \
	123	\| SD_SERIALIZE \
	124	\| SD_WAKE_BALANCE, \
	125	.last_balance = jiffies, \
	126	.balance_interval = 1, \
	127	.nr_balance_failed = 0, \
	128	}
	129
	130	#ifdef CONFIG_X86_64_ACPI_NUMA
	131	extern int __node_distance(int, int);
	132	#define node_distance(a, b) __node_distance(a, b)
	133	#endif
	134
	135	#else /* CONFIG_NUMA */
	136
	137	#include <asm-generic/topology.h>
	138
	139	#endif
	140
	141	extern cpumask_t cpu_coregroup_map(int cpu);
	142
	143	#ifdef ENABLE_TOPO_DEFINES
	144	#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
	145	#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
	146	#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
	147	#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
	148	#endif
	149
	150	#ifdef CONFIG_SMP
	151	#define mc_capable() (boot_cpu_data.x86_max_cores > 1)
	152	#define smt_capable() (smp_num_siblings > 1)
	153	#endif
	154
96a388de	155	#endif