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powerpc: Move cpu hotplug driver lock from pseries to powerpc

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Move the defintion and lock helper routines for the cpu hotplug driver
lock from pseries to powerpc code to avoid build breaks for platforms
other than pseries that use cpu hotplug.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nathan Fontenot 2010-01-14 09:52:44 +00:00 • committed by Benjamin Herrenschmidt
parent 9becd2a0d6
commit d0174c7219
2 changed files with 12 additions and 14 deletions
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12
arch/powerpc/kernel/smp.c
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@ -619,4 +619,16 @@ void __cpu_die(unsigned int cpu)
if (smp_ops->cpu_die)
smp_ops->cpu_die(cpu);
}
static DEFINE_MUTEX(powerpc_cpu_hotplug_driver_mutex);
void cpu_hotplug_driver_lock()
{
mutex_lock(&powerpc_cpu_hotplug_driver_mutex);
}
void cpu_hotplug_driver_unlock()
{
mutex_unlock(&powerpc_cpu_hotplug_driver_mutex);
}
#endif