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arm64: add CPU_HOTPLUG infrastructure

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This patch adds the basic infrastructure necessary to support
CPU_HOTPLUG on arm64, based on the arm implementation. Actual hotplug
support will depend on an implementation's cpu_operations (e.g. PSCI).

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Rutland 2013-10-24 20:30:18 +01:00 • committed by Catalin Marinas
parent e8765b265a
commit 9327e2c6bb
8 changed files with 187 additions and 1 deletions
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7
arch/arm64/kernel/process.c
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@ -102,6 +102,13 @@ void arch_cpu_idle(void)
local_irq_enable();
}
#ifdef CONFIG_HOTPLUG_CPU
void arch_cpu_idle_dead(void)
{
cpu_die();
}
#endif
void machine_shutdown(void)
{
#ifdef CONFIG_SMP