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author | Lee Schermerhorn <lee.schermerhorn@hp.com> | 2010-05-26 14:44:58 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 09:12:57 -0700 |
commit | e534c7c5f8d6e9fc46f57fab067c7e48d8ceb172 (patch) | |
tree | 90150391bb1222888627ab22276158ffaf905f12 /arch/x86 | |
parent | 7281201922a0063fa60804ce39c277fc98142a47 (diff) | |
download | linux-3.10-e534c7c5f8d6e9fc46f57fab067c7e48d8ceb172.tar.gz linux-3.10-e534c7c5f8d6e9fc46f57fab067c7e48d8ceb172.tar.bz2 linux-3.10-e534c7c5f8d6e9fc46f57fab067c7e48d8ceb172.zip |
numa: x86_64: use generic percpu var numa_node_id() implementation
x86 arch specific changes to use generic numa_node_id() based on generic
percpu variable infrastructure. Back out x86's custom version of
numa_node_id()
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Nick Piggin <npiggin@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Eric Whitney <eric.whitney@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/Kconfig | 4 | ||||
-rw-r--r-- | arch/x86/include/asm/topology.h | 22 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/common.c | 6 | ||||
-rw-r--r-- | arch/x86/kernel/setup_percpu.c | 4 | ||||
-rw-r--r-- | arch/x86/mm/numa_64.c | 9 |
5 files changed, 21 insertions, 24 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5dc54219e73..dcb0593b4a6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1706,6 +1706,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID def_bool X86_64 depends on NUMA +config USE_PERCPU_NUMA_NODE_ID + def_bool X86_64 + depends on NUMA + menu "Power management and ACPI options" config ARCH_HIBERNATION_HEADER diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index a2e629476b0..21899cc31e5 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -53,33 +53,29 @@ extern int cpu_to_node_map[]; /* Returns the number of the node containing CPU 'cpu' */ -static inline int cpu_to_node(int cpu) +static inline int __cpu_to_node(int cpu) { return cpu_to_node_map[cpu]; } -#define early_cpu_to_node(cpu) cpu_to_node(cpu) +#define early_cpu_to_node __cpu_to_node +#define cpu_to_node __cpu_to_node #else /* CONFIG_X86_64 */ /* Mappings between logical cpu number and node number */ DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); -/* Returns the number of the current Node. */ -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); +/* + * override generic percpu implementation of cpu_to_node + */ +extern int __cpu_to_node(int cpu); +#define cpu_to_node __cpu_to_node + extern int early_cpu_to_node(int cpu); #else /* !CONFIG_DEBUG_PER_CPU_MAPS */ -/* Returns the number of the node containing CPU 'cpu' */ -static inline int cpu_to_node(int cpu) -{ - return per_cpu(x86_cpu_to_node_map, cpu); -} - /* Same function but used if called before per_cpu areas are setup */ static inline int early_cpu_to_node(int cpu) { diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index cc83a002786..68e4a6f2211 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1121,9 +1121,9 @@ void __cpuinit cpu_init(void) oist = &per_cpu(orig_ist, 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)); + if (cpu != 0 && percpu_read(numa_node) == 0 && + early_cpu_to_node(cpu) != NUMA_NO_NODE) + set_numa_node(early_cpu_to_node(cpu)); #endif me = current; diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index ef6370b00e7..a867940a6df 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -265,10 +265,10 @@ void __init setup_per_cpu_areas(void) #if defined(CONFIG_X86_64) && defined(CONFIG_NUMA) /* - * make sure boot cpu node_number is right, when boot cpu is on the + * make sure boot cpu numa_node is right, when boot cpu is on the * node that doesn't have mem installed */ - per_cpu(node_number, boot_cpu_id) = cpu_to_node(boot_cpu_id); + set_cpu_numa_node(boot_cpu_id, early_cpu_to_node(boot_cpu_id)); #endif /* Setup node to cpumask map */ diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 8948f47fde0..a7bcc23ef96 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -33,9 +33,6 @@ int numa_off __initdata; static unsigned long __initdata nodemap_addr; static unsigned long __initdata nodemap_size; -DEFINE_PER_CPU(int, node_number) = 0; -EXPORT_PER_CPU_SYMBOL(node_number); - /* * Map cpu index to node index */ @@ -809,7 +806,7 @@ void __cpuinit numa_set_node(int cpu, int node) per_cpu(x86_cpu_to_node_map, cpu) = node; if (node != NUMA_NO_NODE) - per_cpu(node_number, cpu) = node; + set_cpu_numa_node(cpu, node); } void __cpuinit numa_clear_node(int cpu) @@ -867,7 +864,7 @@ void __cpuinit numa_remove_cpu(int cpu) numa_set_cpumask(cpu, 0); } -int cpu_to_node(int cpu) +int __cpu_to_node(int cpu) { if (early_per_cpu_ptr(x86_cpu_to_node_map)) { printk(KERN_WARNING @@ -877,7 +874,7 @@ int cpu_to_node(int cpu) } return per_cpu(x86_cpu_to_node_map, cpu); } -EXPORT_SYMBOL(cpu_to_node); +EXPORT_SYMBOL(__cpu_to_node); /* * Same function as cpu_to_node() but used if called before the |