From: travis@sgi.com Date: Wed, 30 Jan 2008 12:33:25 +0000 (+0100) Subject: x86: change size of node ids from u8 to s16 X-Git-Tag: v2.6.25-rc1~1143^2~203 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4323838215184f5a2f081e0d17b8d60731b03164;p=linux-2.6 x86: change size of node ids from u8 to s16 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 Cc: Yinghai Lu Cc: Eric Dumazet Signed-off-by: Mike Travis Reviewed-by: Christoph Lameter Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 2114b4c71f..81af31e5a9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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" diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 441af4edea..0ca96d86cb 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -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; diff --git a/include/asm-x86/mmzone_64.h b/include/asm-x86/mmzone_64.h index b0c25ae111..ebaf9663aa 100644 --- a/include/asm-x86/mmzone_64.h +++ b/include/asm-x86/mmzone_64.h @@ -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 diff --git a/include/asm-x86/numa_64.h b/include/asm-x86/numa_64.h index c797cd523d..15fe07cde5 100644 --- a/include/asm-x86/numa_64.h +++ b/include/asm-x86/numa_64.h @@ -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); diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h index 7b0cce2f37..8af05a93f0 100644 --- a/include/asm-x86/topology.h +++ b/include/asm-x86/topology.h @@ -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];