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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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-02-10 18:46:50 +11:00
parent fa3f82c8bb
commit 4fcb8833af
1 changed files with 1 additions and 2 deletions
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3
arch/powerpc/kernel/smp.c
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@ -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