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author | Glauber Costa | 2008-03-03 18:13:07 +0100 |
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committer | Ingo Molnar | 2008-04-17 17:40:56 +0200 |
commit | 69c18c15d39c4622c6e2f97e5db4d8c9c43adaaa (patch) | |
tree | cf04add1e7b3544056eecb3b511bf4d6177120bc /arch/x86/kernel/smpboot_64.c | |
parent | x86: do not clear cpu_online_map (diff) | |
download | kernel-qcow2-linux-69c18c15d39c4622c6e2f97e5db4d8c9c43adaaa.tar.gz kernel-qcow2-linux-69c18c15d39c4622c6e2f97e5db4d8c9c43adaaa.tar.xz kernel-qcow2-linux-69c18c15d39c4622c6e2f97e5db4d8c9c43adaaa.zip |
x86: merge __cpu_disable and cpu_die
They are now equal, and are moved to a common file
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/smpboot_64.c')
-rw-r--r-- | arch/x86/kernel/smpboot_64.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c index 6509d3c1b3df..0c67e5ae9c9d 100644 --- a/arch/x86/kernel/smpboot_64.c +++ b/arch/x86/kernel/smpboot_64.c @@ -836,82 +836,3 @@ void __init native_smp_cpus_done(unsigned int max_cpus) setup_ioapic_dest(); check_nmi_watchdog(); } - -#ifdef CONFIG_HOTPLUG_CPU -static void __ref remove_cpu_from_maps(int cpu) -{ - cpu_clear(cpu, cpu_online_map); - cpu_clear(cpu, cpu_callout_map); - cpu_clear(cpu, cpu_callin_map); - clear_bit(cpu, (unsigned long *)&cpu_initialized); /* was set by cpu_init() */ - clear_node_cpumask(cpu); -} - -int __cpu_disable(void) -{ - int cpu = smp_processor_id(); - - /* - * Perhaps use cpufreq to drop frequency, but that could go - * into generic code. - * - * We won't take down the boot processor on i386 due to some - * interrupts only being able to be serviced by the BSP. - * Especially so if we're not using an IOAPIC -zwane - */ - if (cpu == 0) - return -EBUSY; - - if (nmi_watchdog == NMI_LOCAL_APIC) - stop_apic_nmi_watchdog(NULL); - clear_local_APIC(); - - /* - * HACK: - * Allow any queued timer interrupts to get serviced - * This is only a temporary solution until we cleanup - * fixup_irqs as we do for IA64. - */ - local_irq_enable(); - mdelay(1); - - local_irq_disable(); - remove_siblinginfo(cpu); - - /* It's now safe to remove this processor from the online map */ - remove_cpu_from_maps(cpu); - fixup_irqs(cpu_online_map); - return 0; -} - -void __cpu_die(unsigned int cpu) -{ - /* We don't do anything here: idle task is faking death itself. */ - unsigned int i; - - for (i = 0; i < 10; i++) { - /* They ack this in play_dead by setting CPU_DEAD */ - if (per_cpu(cpu_state, cpu) == CPU_DEAD) { - printk ("CPU %d is now offline\n", cpu); - if (1 == num_online_cpus()) - alternatives_smp_switch(0); - return; - } - msleep(100); - } - printk(KERN_ERR "CPU %u didn't die...\n", cpu); -} - -#else /* ... !CONFIG_HOTPLUG_CPU */ - -int __cpu_disable(void) -{ - return -ENOSYS; -} - -void __cpu_die(unsigned int cpu) -{ - /* We said "no" in __cpu_disable */ - BUG(); -} -#endif /* CONFIG_HOTPLUG_CPU */ |