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x86: change size of node ids from u8 to s16

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Change the size of node ids for X86_64 from u8 to s16 to
accomodate more than 32k nodes and allow for NUMA_NO_NODE
(-1) to be sign extended to int.

Cc: David Rientjes <rientjes@google.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
travis@sgi.com 2008-01-30 13:33:25 +01:00 committed by Ingo Molnar
parent 409a7b859d
commit 4323838215
5 changed files with 16 additions and 15 deletions
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1
arch/x86/Kconfig
View File

@ -848,6 +848,7 @@ config NUMA_EMU
config NODES_SHIFT
int
range 1 15 if X86_64
default "6" if X86_64
default "4" if X86_NUMAQ
default "3"

12
arch/x86/mm/numa_64.c
View File

@ -31,15 +31,15 @@ bootmem_data_t plat_node_bdata[MAX_NUMNODES];
struct memnode memnode;
u16 x86_cpu_to_node_map_init[NR_CPUS] = {
int x86_cpu_to_node_map_init[NR_CPUS] = {
[0 ... NR_CPUS-1] = NUMA_NO_NODE
};
void *x86_cpu_to_node_map_early_ptr;
DEFINE_PER_CPU(u16, x86_cpu_to_node_map) = NUMA_NO_NODE;
DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
EXPORT_PER_CPU_SYMBOL(x86_cpu_to_node_map);
EXPORT_SYMBOL(x86_cpu_to_node_map_early_ptr);
u16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
s16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
@ -63,7 +63,7 @@ static int __init populate_memnodemap(const struct bootnode *nodes,
unsigned long addr, end;
int i, res = -1;
memset(memnodemap, 0xff, memnodemapsize);
memset(memnodemap, 0xff, sizeof(s16)*memnodemapsize);
for (i = 0; i < numnodes; i++) {
addr = nodes[i].start;
end = nodes[i].end;
@ -72,7 +72,7 @@ static int __init populate_memnodemap(const struct bootnode *nodes,
if ((end >> shift) >= memnodemapsize)
return 0;
do {
if (memnodemap[addr >> shift] != 0xff)
if (memnodemap[addr >> shift] != NUMA_NO_NODE)
return -1;
memnodemap[addr >> shift] = i;
addr += (1UL << shift);
@ -533,7 +533,7 @@ __cpuinit void numa_add_cpu(int cpu)
void __cpuinit numa_set_node(int cpu, int node)
{
u16 *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
cpu_pda(cpu)->nodenumber = node;

6
include/asm-x86/mmzone_64.h
View File

@ -15,9 +15,9 @@
struct memnode {
int shift;
unsigned int mapsize;
u8 *map;
u8 embedded_map[64-16];
} ____cacheline_aligned; /* total size = 64 bytes */
s16 *map;
s16 embedded_map[64-8];
} ____cacheline_aligned; /* total size = 128 bytes */
extern struct memnode memnode;
#define memnode_shift memnode.shift
#define memnodemap memnode.map

2
include/asm-x86/numa_64.h
View File

@ -20,7 +20,7 @@ extern void numa_set_node(int cpu, int node);
extern void srat_reserve_add_area(int nodeid);
extern int hotadd_percent;
extern u16 apicid_to_node[MAX_LOCAL_APIC];
extern s16 apicid_to_node[MAX_LOCAL_APIC];
extern void numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn);
extern unsigned long numa_free_all_bootmem(void);

10
include/asm-x86/topology.h
View File

@ -31,11 +31,11 @@
/* Mappings between logical cpu number and node number */
#ifdef CONFIG_X86_32
extern u8 cpu_to_node_map[];
extern int cpu_to_node_map[];
#else
DECLARE_PER_CPU(u16, x86_cpu_to_node_map);
extern u16 x86_cpu_to_node_map_init[];
DECLARE_PER_CPU(int, x86_cpu_to_node_map);
extern int x86_cpu_to_node_map_init[];
extern void *x86_cpu_to_node_map_early_ptr;
/* Returns the number of the current Node. */
#define numa_node_id() (early_cpu_to_node(raw_smp_processor_id()))
@ -43,7 +43,7 @@ extern void *x86_cpu_to_node_map_early_ptr;
extern cpumask_t node_to_cpumask_map[];
#define NUMA_NO_NODE ((u16)(~0))
#define NUMA_NO_NODE (-1)
/* Returns the number of the node containing CPU 'cpu' */
#ifdef CONFIG_X86_32
@ -56,7 +56,7 @@ static inline int cpu_to_node(int cpu)
#else /* CONFIG_X86_64 */
static inline int early_cpu_to_node(int cpu)
{
u16 *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
if (cpu_to_node_map)
return cpu_to_node_map[cpu];