From: Andi Kleen Date: Mon, 12 Sep 2005 16:49:24 +0000 (+0200) Subject: [PATCH] x86-64: Use SRAT data on Intel systems too. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=df0cc26b1b7f88f46307eea50a7469f0b58132d9;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [PATCH] x86-64: Use SRAT data on Intel systems too. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index df55a63f8866..869770da2933 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -942,6 +942,25 @@ static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c) return 1; } +static void srat_detect_node(void) +{ +#ifdef CONFIG_NUMA + unsigned apicid, node; + int cpu = smp_processor_id(); + + /* Don't do the funky fallback heuristics the AMD version employs + for now. */ + apicid = phys_proc_id[cpu]; + node = apicid_to_node[apicid]; + if (node == NUMA_NO_NODE) + node = 0; + cpu_to_node[cpu] = node; + + if (acpi_numa > 0) + printk(KERN_INFO "CPU %d -> Node %d\n", cpu, node); +#endif +} + static void __cpuinit init_intel(struct cpuinfo_x86 *c) { /* Cache sizes */ @@ -960,6 +979,8 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) if (c->x86 >= 15) set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability); c->x86_num_cores = intel_num_cpu_cores(c); + + srat_detect_node(); } static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)