riscv: cpu-hotplug: clear cpu from numa map when teardown

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From: Pingfan Liu <kernelfans@xxxxxxxxx>

commit f40fe31c01445f31253b15bef2412b33ae31093b upstream.

There is numa_add_cpu() when cpus online, accordingly, there should be
numa_remove_cpu() when cpus offline.

Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx>
Fixes: 4f0e8eef772e ("riscv: Add numa support for riscv64 platform")
Cc: stable@xxxxxxxxxxxxxxx
[Palmer: Add missing NUMA include]
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/riscv/kernel/cpu-hotplug.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/riscv/kernel/cpu-hotplug.c
+++ b/arch/riscv/kernel/cpu-hotplug.c
@@ -12,6 +12,7 @@
 #include <linux/sched/hotplug.h>
 #include <asm/irq.h>
 #include <asm/cpu_ops.h>
+#include <asm/numa.h>
 #include <asm/sbi.h>
 
 void cpu_stop(void);
@@ -46,6 +47,7 @@ int __cpu_disable(void)
 		return ret;
 
 	remove_cpu_topology(cpu);
+	numa_remove_cpu(cpu);
 	set_cpu_online(cpu, false);
 	irq_migrate_all_off_this_cpu();
 


Patches currently in stable-queue which might be from kernelfans@xxxxxxxxx are

queue-5.16/riscv-cpu-hotplug-clear-cpu-from-numa-map-when-teardown.patch



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