From: James Morse <james.morse@xxxxxxx>
LoongArch provides its own arch_unregister_cpu(). This clears the
hotpluggable flag, then unregisters the CPU.
It isn't necessary to clear the hotpluggable flag when unregistering
a cpu. unregister_cpu() writes NULL to the percpu cpu_sys_devices
pointer, meaning cpu_is_hotpluggable() will return false, as
get_cpu_device() has returned NULL.
Remove arch_unregister_cpu() and use the __weak version.
Signed-off-by: James Morse <james.morse@xxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>
Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
---
Changes since RFC v3:
* Adapt for removal of EXPORT_SYMBOL()s
---
arch/loongarch/kernel/topology.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/arch/loongarch/kernel/topology.c b/arch/loongarch/kernel/topology.c
index 7dfb46c68f58..866c2c9ef6ab 100644
--- a/arch/loongarch/kernel/topology.c
+++ b/arch/loongarch/kernel/topology.c
@@ -18,12 +18,4 @@ int arch_register_cpu(int cpu)
c->hotpluggable = !io_master(cpu);
return register_cpu(c, cpu);
}
-
-void arch_unregister_cpu(int cpu)
-{
- struct cpu *c = &per_cpu(cpu_devices, cpu);
-
- c->hotpluggable = 0;
- unregister_cpu(c);
-}
#endif
--
2.30.2
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