powerpc/smp: Don't expose per-cpu "cpu_state" array
Instead, keep it static, expose an accessor and use that from
the PowerMac code. Avoids easy namespace collisions and will
make it easier to consolidate with other implementations.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index df37397..d7f8cc1 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -305,7 +305,7 @@
#ifdef CONFIG_HOTPLUG_CPU
/* State of each CPU during hotplug phases */
-DEFINE_PER_CPU(int, cpu_state) = { 0 };
+static DEFINE_PER_CPU(int, cpu_state) = { 0 };
int generic_cpu_disable(void)
{
@@ -348,6 +348,11 @@
while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
cpu_relax();
}
+
+void generic_set_cpu_dead(unsigned int cpu)
+{
+ per_cpu(cpu_state, cpu) = CPU_DEAD;
+}
#endif
int __cpuinit __cpu_up(unsigned int cpu)