cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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numa.h (2428B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_X86_NUMA_H
      3#define _ASM_X86_NUMA_H
      4
      5#include <linux/nodemask.h>
      6#include <linux/errno.h>
      7
      8#include <asm/topology.h>
      9#include <asm/apicdef.h>
     10
     11#ifdef CONFIG_NUMA
     12
     13#define NR_NODE_MEMBLKS		(MAX_NUMNODES*2)
     14
     15/*
     16 * Too small node sizes may confuse the VM badly. Usually they
     17 * result from BIOS bugs. So dont recognize nodes as standalone
     18 * NUMA entities that have less than this amount of RAM listed:
     19 */
     20#define NODE_MIN_SIZE (4*1024*1024)
     21
     22extern int numa_off;
     23
     24/*
     25 * __apicid_to_node[] stores the raw mapping between physical apicid and
     26 * node and is used to initialize cpu_to_node mapping.
     27 *
     28 * The mapping may be overridden by apic->numa_cpu_node() on 32bit and thus
     29 * should be accessed by the accessors - set_apicid_to_node() and
     30 * numa_cpu_node().
     31 */
     32extern s16 __apicid_to_node[MAX_LOCAL_APIC];
     33extern nodemask_t numa_nodes_parsed __initdata;
     34
     35extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
     36extern void __init numa_set_distance(int from, int to, int distance);
     37
     38static inline void set_apicid_to_node(int apicid, s16 node)
     39{
     40	__apicid_to_node[apicid] = node;
     41}
     42
     43extern int numa_cpu_node(int cpu);
     44
     45#else	/* CONFIG_NUMA */
     46static inline void set_apicid_to_node(int apicid, s16 node)
     47{
     48}
     49
     50static inline int numa_cpu_node(int cpu)
     51{
     52	return NUMA_NO_NODE;
     53}
     54#endif	/* CONFIG_NUMA */
     55
     56#ifdef CONFIG_X86_32
     57# include <asm/numa_32.h>
     58#endif
     59
     60#ifdef CONFIG_NUMA
     61extern void numa_set_node(int cpu, int node);
     62extern void numa_clear_node(int cpu);
     63extern void __init init_cpu_to_node(void);
     64extern void numa_add_cpu(int cpu);
     65extern void numa_remove_cpu(int cpu);
     66extern void init_gi_nodes(void);
     67#else	/* CONFIG_NUMA */
     68static inline void numa_set_node(int cpu, int node)	{ }
     69static inline void numa_clear_node(int cpu)		{ }
     70static inline void init_cpu_to_node(void)		{ }
     71static inline void numa_add_cpu(int cpu)		{ }
     72static inline void numa_remove_cpu(int cpu)		{ }
     73static inline void init_gi_nodes(void)			{ }
     74#endif	/* CONFIG_NUMA */
     75
     76#ifdef CONFIG_DEBUG_PER_CPU_MAPS
     77void debug_cpumask_set_cpu(int cpu, int node, bool enable);
     78#endif
     79
     80#ifdef CONFIG_NUMA_EMU
     81#define FAKE_NODE_MIN_SIZE	((u64)32 << 20)
     82#define FAKE_NODE_MIN_HASH_MASK	(~(FAKE_NODE_MIN_SIZE - 1UL))
     83int numa_emu_cmdline(char *str);
     84#else /* CONFIG_NUMA_EMU */
     85static inline int numa_emu_cmdline(char *str)
     86{
     87	return -EINVAL;
     88}
     89#endif /* CONFIG_NUMA_EMU */
     90
     91#endif	/* _ASM_X86_NUMA_H */