diff options
Diffstat (limited to 'arch/x86/kernel/topology.c')
| -rw-r--r-- | arch/x86/kernel/topology.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c index be5bc2e47c71..8617d1ed9d31 100644 --- a/arch/x86/kernel/topology.c +++ b/arch/x86/kernel/topology.c @@ -25,12 +25,14 @@ * * Send feedback to <colpatch@us.ibm.com> */ +#include <linux/interrupt.h> #include <linux/nodemask.h> #include <linux/export.h> #include <linux/mmzone.h> #include <linux/init.h> #include <linux/smp.h> #include <linux/irq.h> +#include <asm/io_apic.h> #include <asm/cpu.h> static DEFINE_PER_CPU(struct x86_cpu, cpu_devices); @@ -59,39 +61,29 @@ __setup("cpu0_hotplug", enable_cpu0_hotplug); */ int _debug_hotplug_cpu(int cpu, int action) { - struct device *dev = get_cpu_device(cpu); int ret; if (!cpu_is_hotpluggable(cpu)) return -EINVAL; - lock_device_hotplug(); - switch (action) { case 0: - ret = cpu_down(cpu); - if (!ret) { + ret = remove_cpu(cpu); + if (!ret) pr_info("DEBUG_HOTPLUG_CPU0: CPU %u is now offline\n", cpu); - dev->offline = true; - kobject_uevent(&dev->kobj, KOBJ_OFFLINE); - } else + else pr_debug("Can't offline CPU%d.\n", cpu); break; case 1: - ret = cpu_up(cpu); - if (!ret) { - dev->offline = false; - kobject_uevent(&dev->kobj, KOBJ_ONLINE); - } else { + ret = add_cpu(cpu); + if (ret) pr_debug("Can't online CPU%d.\n", cpu); - } + break; default: ret = -EINVAL; } - unlock_device_hotplug(); - return ret; } @@ -121,7 +113,7 @@ int arch_register_cpu(int num) * Two known BSP/CPU0 dependencies: Resume from suspend/hibernate * depends on BSP. PIC interrupts depend on BSP. * - * If the BSP depencies are under control, one can tell kernel to + * If the BSP dependencies are under control, one can tell kernel to * enable BSP hotplug. This basically adds a control file and * one can attempt to offline BSP. */ @@ -162,11 +154,6 @@ static int __init topology_init(void) { int i; -#ifdef CONFIG_NUMA - for_each_online_node(i) - register_one_node(i); -#endif - for_each_present_cpu(i) arch_register_cpu(i); |