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Commit 4fcb8833 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

powerpc/smp: Fix generic_mach_cpu_die() 



This is used by some "soft" hotplug implementations. I needs to
call idle_task_exit() when the CPU is going away, and we remove
the now no-longer needed set_cpu_online() and local_irq_enable()
which are handled by the return to start_secondary

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent fa3f82c8

arch/powerpc/kernel/smp.c

+1 −2
Original line number Diff line number Diff line
@@ -362,14 +362,13 @@ void generic_mach_cpu_die(void) 
	unsigned int cpu;



	local_irq_disable();

	idle_task_exit();

	cpu = smp_processor_id();

	printk(KERN_DEBUG "CPU%d offline\n", cpu);

	__get_cpu_var(cpu_state) = CPU_DEAD;

	smp_wmb();

	while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)

		cpu_relax();

	set_cpu_online(cpu, true);

	local_irq_enable();

}

#endif