From 80855f7361eb68205e6bc1981928629d9b02d5c9 Mon Sep 17 00:00:00 2001 From: Mike Travis Date: Wed, 31 Dec 2008 18:08:47 -0800 Subject: cpumask: use alloc_cpumask_var_node where appropriate Impact: Reduce inter-node memory traffic. Reduces inter-node memory traffic (offloading the global system bus) by allocating referenced struct cpumasks on the same node as the referring struct. Signed-off-by: Mike Travis Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c | 5 +++-- arch/x86/kernel/io_apic.c | 6 +++--- 2 files changed, 6 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c index d0a001093b2..28102ad1a36 100644 --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -547,8 +547,9 @@ static int __init acpi_cpufreq_early_init(void) return -ENOMEM; } for_each_possible_cpu(i) { - if (!alloc_cpumask_var(&per_cpu_ptr(acpi_perf_data, i) - ->shared_cpu_map, GFP_KERNEL)) { + if (!alloc_cpumask_var_node( + &per_cpu_ptr(acpi_perf_data, i)->shared_cpu_map, + GFP_KERNEL, cpu_to_node(i))) { /* Freeing a NULL pointer is OK: alloc_percpu zeroes. */ free_acpi_perf_data(); diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c index 3e070bb961d..a25c3f76b8a 100644 --- a/arch/x86/kernel/io_apic.c +++ b/arch/x86/kernel/io_apic.c @@ -212,11 +212,11 @@ static struct irq_cfg *get_one_free_irq_cfg(int cpu) cfg = kzalloc_node(sizeof(*cfg), GFP_ATOMIC, node); if (cfg) { - /* FIXME: needs alloc_cpumask_var_node() */ - if (!alloc_cpumask_var(&cfg->domain, GFP_ATOMIC)) { + if (!alloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) { kfree(cfg); cfg = NULL; - } else if (!alloc_cpumask_var(&cfg->old_domain, GFP_ATOMIC)) { + } else if (!alloc_cpumask_var_node(&cfg->old_domain, + GFP_ATOMIC, node)) { free_cpumask_var(cfg->domain); kfree(cfg); cfg = NULL; -- cgit v1.2.3-18-g5258