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gerrit-public.fairphone.software / kernel / msm-4.19 / e6445f52d9c8b0e6557a45fa7d0e8e088d430a8c / . / arch / x86 / include / asm / numa.h
blob: 01b493e5a99b3bf296ccb44aeca865e77982254f [file] [log] [blame]
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]1#ifndef _ASM_X86_NUMA_H
2#define _ASM_X86_NUMA_H
3
Tejun Heo6bd26272011-05-02 14:18:52 +0200[diff] [blame]4#include <linux/nodemask.h>
5
Tejun Heode2d9442011-01-23 14:37:41 +0100[diff] [blame]6#include <asm/topology.h>
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]7#include <asm/apicdef.h>
8
9#ifdef CONFIG_NUMA
Tejun Heoef396ec2011-02-16 17:11:07 +0100[diff] [blame]10
11#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
Tejun Heoa4106ea2011-05-02 14:18:53 +0200[diff] [blame]12
13/*
14 * Too small node sizes may confuse the VM badly. Usually they
15 * result from BIOS bugs. So dont recognize nodes as standalone
16 * NUMA entities that have less than this amount of RAM listed:
17 */
18#define NODE_MIN_SIZE (4*1024*1024)
19
20extern int numa_off;
Tejun Heoef396ec2011-02-16 17:11:07 +0100[diff] [blame]21
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]22/*
23 * __apicid_to_node[] stores the raw mapping between physical apicid and
24 * node and is used to initialize cpu_to_node mapping.
25 *
26 * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
27 * should be accessed by the accessors - set_apicid_to_node() and
28 * numa_cpu_node().
29 */
30extern s16 __apicid_to_node[MAX_LOCAL_APIC];
Tejun Heoe6df5952011-05-02 14:18:53 +0200[diff] [blame]31extern nodemask_t numa_nodes_parsed __initdata;
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]32
Tejun Heob0d31082011-05-02 14:18:53 +0200[diff] [blame]33extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
34extern void __init numa_set_distance(int from, int to, int distance);
35
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]36static inline void set_apicid_to_node(int apicid, s16 node)
37{
38 __apicid_to_node[apicid] = node;
39}
Tejun Heo6bd26272011-05-02 14:18:52 +0200[diff] [blame]40
Paul Gortmaker148f9bb2013-06-18 18:23:59 -0400[diff] [blame]41extern int numa_cpu_node(int cpu);
Tejun Heo6bd26272011-05-02 14:18:52 +0200[diff] [blame]42
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]43#else /* CONFIG_NUMA */
44static inline void set_apicid_to_node(int apicid, s16 node)
45{
46}
Tejun Heo6bd26272011-05-02 14:18:52 +0200[diff] [blame]47
48static inline int numa_cpu_node(int cpu)
49{
50 return NUMA_NO_NODE;
51}
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]52#endif /* CONFIG_NUMA */
53
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200[diff] [blame]54#ifdef CONFIG_X86_32
David Howellsa1ce3922012-10-02 18:01:25 +0100[diff] [blame]55# include <asm/numa_32.h>
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200[diff] [blame]56#endif
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]57
Tejun Heo645a7912011-01-23 14:37:40 +0100[diff] [blame]58#ifdef CONFIG_NUMA
Wen Congyange13fe862013-02-22 16:33:31 -0800[diff] [blame]59extern void numa_set_node(int cpu, int node);
60extern void numa_clear_node(int cpu);
Tejun Heo8db78cc2011-01-23 14:37:42 +0100[diff] [blame]61extern void __init init_cpu_to_node(void);
Paul Gortmaker148f9bb2013-06-18 18:23:59 -0400[diff] [blame]62extern void numa_add_cpu(int cpu);
63extern void numa_remove_cpu(int cpu);
Tejun Heo645a7912011-01-23 14:37:40 +0100[diff] [blame]64#else /* CONFIG_NUMA */
65static inline void numa_set_node(int cpu, int node) { }
66static inline void numa_clear_node(int cpu) { }
Tejun Heo8db78cc2011-01-23 14:37:42 +0100[diff] [blame]67static inline void init_cpu_to_node(void) { }
Tejun Heode2d9442011-01-23 14:37:41 +0100[diff] [blame]68static inline void numa_add_cpu(int cpu) { }
69static inline void numa_remove_cpu(int cpu) { }
Tejun Heo645a7912011-01-23 14:37:40 +0100[diff] [blame]70#endif /* CONFIG_NUMA */
71
Tejun Heode2d9442011-01-23 14:37:41 +0100[diff] [blame]72#ifdef CONFIG_DEBUG_PER_CPU_MAPS
David Rientjes7a6c6542011-04-20 19:19:13 -0700[diff] [blame]73void debug_cpumask_set_cpu(int cpu, int node, bool enable);
Tejun Heode2d9442011-01-23 14:37:41 +0100[diff] [blame]74#endif
75
Tejun Heoa4106ea2011-05-02 14:18:53 +0200[diff] [blame]76#ifdef CONFIG_NUMA_EMU
77#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
78#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
79void numa_emu_cmdline(char *);
80#endif /* CONFIG_NUMA_EMU */
81
Tejun Heobbc9e2f2011-01-23 14:37:39 +0100[diff] [blame]82#endif /* _ASM_X86_NUMA_H */