[mirror_ubuntu-artful-kernel.git] / arch / powerpc / include / asm / topology.h

#ifndef _ASM_POWERPC_TOPOLOGY_H
#define _ASM_POWERPC_TOPOLOGY_H
#ifdef __KERNEL__


struct device;
struct device_node;

#ifdef CONFIG_NUMA

/*
 * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
 * all zones on all nodes will be eligible for zone_reclaim().
 */
#define RECLAIM_DISTANCE 10

#include <asm/mmzone.h>

#define parent_node(node)	(node)

#define cpumask_of_node(node) ((node) == -1 ?				\
			       cpu_all_mask :				\
			       node_to_cpumask_map[node])

struct pci_bus;
#ifdef CONFIG_PCI
extern int pcibus_to_node(struct pci_bus *bus);
#else
static inline int pcibus_to_node(struct pci_bus *bus)
{
	return -1;
}
#endif

#define cpumask_of_pcibus(bus)	(pcibus_to_node(bus) == -1 ?		\
				 cpu_all_mask :				\
				 cpumask_of_node(pcibus_to_node(bus)))

extern int __node_distance(int, int);
#define node_distance(a, b) __node_distance(a, b)

extern void __init dump_numa_cpu_topology(void);

extern int sysfs_add_device_to_node(struct device *dev, int nid);
extern void sysfs_remove_device_from_node(struct device *dev, int nid);

static inline int early_cpu_to_node(int cpu)
{
	int nid;

	nid = numa_cpu_lookup_table[cpu];

	/*
	 * Fall back to node 0 if nid is unset (it should be, except bugs).
	 * This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)).
	 */
	return (nid < 0) ? 0 : nid;
}
#else

static inline int early_cpu_to_node(int cpu) { return 0; }

static inline void dump_numa_cpu_topology(void) {}

static inline int sysfs_add_device_to_node(struct device *dev, int nid)
{
	return 0;
}

static inline void sysfs_remove_device_from_node(struct device *dev,
						int nid)
{
}
#endif /* CONFIG_NUMA */

#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
extern int start_topology_update(void);
extern int stop_topology_update(void);
extern int prrn_is_enabled(void);
#else
static inline int start_topology_update(void)
{
	return 0;
}
static inline int stop_topology_update(void)
{
	return 0;
}
static inline int prrn_is_enabled(void)
{
	return 0;
}
#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */

#include <asm-generic/topology.h>

#ifdef CONFIG_SMP
#include <asm/cputable.h>

#ifdef CONFIG_PPC64
#include <asm/smp.h>

#define topology_physical_package_id(cpu)	(cpu_to_chip_id(cpu))
#define topology_sibling_cpumask(cpu)	(per_cpu(cpu_sibling_map, cpu))
#define topology_core_cpumask(cpu)	(per_cpu(cpu_core_map, cpu))
#define topology_core_id(cpu)		(cpu_to_core_id(cpu))
#endif
#endif

#endif /* __KERNEL__ */
#endif	/* _ASM_POWERPC_TOPOLOGY_H */
Commit	Line	Data
dd56fdf2	1	#ifndef _ASM_POWERPC_TOPOLOGY_H
dd56fdf2	2	#define _ASM_POWERPC_TOPOLOGY_H
88ced031	3	#ifdef __KERNEL__
1da177e4	4
1da177e4	5
8a25a2fd	6	struct device;
953039c8 JK	7	struct device_node;
953039c8 JK	8
1da177e4 LT	9	#ifdef CONFIG_NUMA
1da177e4 LT	10
56608209	11	/*
4f9b16a6 MG	12	* If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
4f9b16a6 MG	13	* all zones on all nodes will be eligible for zone_reclaim().
56608209 AB	14	*/
	15	#define RECLAIM_DISTANCE 10
	16
dd56fdf2	17	#include <asm/mmzone.h>
dd56fdf2	18
1da177e4 LT	19	#define parent_node(node) (node)
1da177e4 LT	20
c81b812a AB	21	#define cpumask_of_node(node) ((node) == -1 ? \
c81b812a AB	22	cpu_all_mask : \
25863de0	23	node_to_cpumask_map[node])
86c6f274	24
357518fa	25	struct pci_bus;
11faa658	26	#ifdef CONFIG_PCI
357518fa	27	extern int pcibus_to_node(struct pci_bus *bus);
11faa658 AB	28	#else
	29	static inline int pcibus_to_node(struct pci_bus *bus)
	30	{
	31	return -1;
	32	}
	33	#endif
357518fa	34
86c6f274 RR	35	#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
	36	cpu_all_mask : \
	37	cpumask_of_node(pcibus_to_node(bus)))
	38
41eab6f8 AB	39	extern int __node_distance(int, int);
	40	#define node_distance(a, b) __node_distance(a, b)
	41
4b703a23 AB	42	extern void __init dump_numa_cpu_topology(void);
4b703a23 AB	43
8a25a2fd KS	44	extern int sysfs_add_device_to_node(struct device *dev, int nid);
8a25a2fd KS	45	extern void sysfs_remove_device_from_node(struct device *dev, int nid);
953039c8	46
ba4a648f ME	47	static inline int early_cpu_to_node(int cpu)
	48	{
	49	int nid;
	50
	51	nid = numa_cpu_lookup_table[cpu];
	52
	53	/*
	54	* Fall back to node 0 if nid is unset (it should be, except bugs).
	55	* This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)).
	56	*/
	57	return (nid < 0) ? 0 : nid;
	58	}
39bf990e	59	#else
1da177e4	60
ba4a648f ME	61	static inline int early_cpu_to_node(int cpu) { return 0; }
ba4a648f ME	62
4b703a23 AB	63	static inline void dump_numa_cpu_topology(void) {}
4b703a23 AB	64
8a25a2fd	65	static inline int sysfs_add_device_to_node(struct device *dev, int nid)
953039c8 JK	66	{
	67	return 0;
	68	}
	69
8a25a2fd	70	static inline void sysfs_remove_device_from_node(struct device *dev,
953039c8 JK	71	int nid)
	72	{
	73	}
aa6b5446	74	#endif /* CONFIG_NUMA */
953039c8	75
5d7d8072 BH	76	#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
	77	extern int start_topology_update(void);
	78	extern int stop_topology_update(void);
e04fa612	79	extern int prrn_is_enabled(void);
5d7d8072 BH	80	#else
	81	static inline int start_topology_update(void)
	82	{
	83	return 0;
	84	}
	85	static inline int stop_topology_update(void)
	86	{
	87	return 0;
	88	}
e04fa612 NF	89	static inline int prrn_is_enabled(void)
	90	{
	91	return 0;
	92	}
5d7d8072 BH	93	#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
5d7d8072 BH	94
1da177e4 LT	95	#include <asm-generic/topology.h>
1da177e4 LT	96
5c45bf27 SS	97	#ifdef CONFIG_SMP
5c45bf27 SS	98	#include <asm/cputable.h>
056f4faa SR	99
	100	#ifdef CONFIG_PPC64
	101	#include <asm/smp.h>
	102
15863ff3	103	#define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu))
06931e62	104	#define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
cc1ba8ea	105	#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
e9efed3b	106	#define topology_core_id(cpu) (cpu_to_core_id(cpu))
056f4faa	107	#endif
5c45bf27 SS	108	#endif
5c45bf27 SS	109
88ced031	110	#endif /* __KERNEL__ */
dd56fdf2	111	#endif /* _ASM_POWERPC_TOPOLOGY_H */