34dc9e7496
This patch changes the minimum fake node size from 64MB to 32MB so it is possible to test NUMA code at a greater scale on smaller machines (64 nodes on a 2G machine, 1024 nodes on 32G machine with CONFIG_NODES_SHIFT=10). Signed-off-by: David Rientjes <rientjes@google.com> LKML-Reference: <alpine.DEB.2.00.1012221700590.3701@chino.kir.corp.google.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#ifndef _ASM_X86_NUMA_64_H
|
|
#define _ASM_X86_NUMA_64_H
|
|
|
|
#include <linux/nodemask.h>
|
|
#include <asm/apicdef.h>
|
|
|
|
struct bootnode {
|
|
u64 start;
|
|
u64 end;
|
|
};
|
|
|
|
extern int compute_hash_shift(struct bootnode *nodes, int numblks,
|
|
int *nodeids);
|
|
|
|
#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
|
|
|
|
extern void numa_init_array(void);
|
|
extern int numa_off;
|
|
|
|
extern s16 apicid_to_node[MAX_LOCAL_APIC];
|
|
|
|
extern unsigned long numa_free_all_bootmem(void);
|
|
extern void setup_node_bootmem(int nodeid, unsigned long start,
|
|
unsigned long end);
|
|
|
|
#ifdef CONFIG_NUMA
|
|
/*
|
|
* Too small node sizes may confuse the VM badly. Usually they
|
|
* result from BIOS bugs. So dont recognize nodes as standalone
|
|
* NUMA entities that have less than this amount of RAM listed:
|
|
*/
|
|
#define NODE_MIN_SIZE (4*1024*1024)
|
|
|
|
extern void __init init_cpu_to_node(void);
|
|
extern void __cpuinit numa_set_node(int cpu, int node);
|
|
extern void __cpuinit numa_clear_node(int cpu);
|
|
extern void __cpuinit numa_add_cpu(int cpu);
|
|
extern void __cpuinit numa_remove_cpu(int cpu);
|
|
|
|
#ifdef CONFIG_NUMA_EMU
|
|
#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
|
|
#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
|
|
#endif /* CONFIG_NUMA_EMU */
|
|
#else
|
|
static inline void init_cpu_to_node(void) { }
|
|
static inline void numa_set_node(int cpu, int node) { }
|
|
static inline void numa_clear_node(int cpu) { }
|
|
static inline void numa_add_cpu(int cpu, int node) { }
|
|
static inline void numa_remove_cpu(int cpu) { }
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_NUMA_64_H */
|