diff options
| author | Brian Gerst <brgerst@gmail.com> | 2009-01-19 00:38:59 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-01-19 00:38:59 +0900 |
| commit | e7a22c1ebcc1caa8178df1819d05128bb5b45ab9 (patch) | |
| tree | 7769b1263850c97fa244a48ad9187ce0d74e1965 /arch | |
| parent | 5689553076c4a67b83426b076082c63085b7567a (diff) | |
x86-64: Move nodenumber from PDA to per-cpu.
tj: * s/nodenumber/node_number/
* removed now unused pda variable from pda_init()
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/pda.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/topology.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_percpu.c | 4 |
4 files changed, 11 insertions, 10 deletions
diff --git a/arch/x86/include/asm/pda.h b/arch/x86/include/asm/pda.h index 4527d70314d..b30ef6bddc4 100644 --- a/arch/x86/include/asm/pda.h +++ b/arch/x86/include/asm/pda.h @@ -22,7 +22,6 @@ struct x8664_pda { /* gcc-ABI: this canary MUST be at offset 40!!! */ #endif - short nodenumber; /* number of current node (32k max) */ short in_bootmem; /* pda lives in bootmem */ short isidle; } ____cacheline_aligned_in_smp; diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 87ca3fd86e8..ffea1fe03a9 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -83,7 +83,8 @@ extern cpumask_t *node_to_cpumask_map; DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); /* Returns the number of the current Node. */ -#define numa_node_id() read_pda(nodenumber) +DECLARE_PER_CPU(int, node_number); +#define numa_node_id() percpu_read(node_number) #ifdef CONFIG_DEBUG_PER_CPU_MAPS extern int cpu_to_node(int cpu); diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index e2323ecce1d..7976a6a0f65 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -897,18 +897,11 @@ DEFINE_PER_CPU(unsigned int, irq_count) = -1; void __cpuinit pda_init(int cpu) { - struct x8664_pda *pda = cpu_pda(cpu); - /* Setup up data that may be needed in __get_free_pages early */ loadsegment(fs, 0); loadsegment(gs, 0); load_pda_offset(cpu); - - if (cpu != 0) { - if (pda->nodenumber == 0 && cpu_to_node(cpu) != NUMA_NO_NODE) - pda->nodenumber = cpu_to_node(cpu); - } } static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks @@ -978,6 +971,12 @@ void __cpuinit cpu_init(void) if (cpu != 0) pda_init(cpu); +#ifdef CONFIG_NUMA + if (cpu != 0 && percpu_read(node_number) == 0 && + cpu_to_node(cpu) != NUMA_NO_NODE) + percpu_write(node_number, cpu_to_node(cpu)); +#endif + me = current; if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 258497f93f4..efbafbbff58 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -53,6 +53,8 @@ EXPORT_EARLY_PER_CPU_SYMBOL(x86_bios_cpu_apicid); #if defined(CONFIG_NUMA) && defined(CONFIG_X86_64) #define X86_64_NUMA 1 /* (used later) */ +DEFINE_PER_CPU(int, node_number) = 0; +EXPORT_PER_CPU_SYMBOL(node_number); /* * Map cpu index to node index @@ -283,7 +285,7 @@ void __cpuinit numa_set_node(int cpu, int node) per_cpu(x86_cpu_to_node_map, cpu) = node; if (node != NUMA_NO_NODE) - cpu_pda(cpu)->nodenumber = node; + per_cpu(node_number, cpu) = node; } void __cpuinit numa_clear_node(int cpu) |