| From | Russell King (Oracle) <> | Subject | [PATCH 18/21] LoongArch: Use the __weak version of arch_unregister_cpu() | Date | Tue, 21 Nov 2023 13:45:22 +0000 |
| |
From: James Morse <james.morse@arm.com>
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> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> --- 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
|