diff mbox series

[RFC,21/32] LoongArch: Use the __weak version of arch_unregister_cpu()

Message ID 20230203135043.409192-22-james.morse@arm.com
State Superseded
Headers show
Series ACPI/arm64: add support for virtual cpuhotplug | expand

Commit Message

James Morse Feb. 3, 2023, 1:50 p.m. UTC 
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@arm.com>
---
 arch/loongarch/kernel/topology.c | 9 ---------
 1 file changed, 9 deletions(-)
diff mbox series

Patch

diff --git a/arch/loongarch/kernel/topology.c b/arch/loongarch/kernel/topology.c
index a86d51269b09..494044990ba9 100644
--- a/arch/loongarch/kernel/topology.c
+++ b/arch/loongarch/kernel/topology.c
@@ -21,13 +21,4 @@  int arch_register_cpu(int cpu)
 	return ret;
 }
 EXPORT_SYMBOL(arch_register_cpu);
-
-void arch_unregister_cpu(int cpu)
-{
-	struct cpu *c = &per_cpu(cpu_devices, cpu);
-
-	c->hotpluggable = 0;
-	unregister_cpu(c);
-}
-EXPORT_SYMBOL(arch_unregister_cpu);
 #endif