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MIPS: CPU#0 is not hotpluggable

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commit 9cce844abf07b683cff5f0273977d5f8d0af94c7 upstream.

Now CPU#0 is not hotpluggable on MIPS, so prevent to create /sys/devices
/system/cpu/cpu0/online which confuses some user-space tools.

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Huacai Chen 2020-07-16 18:40:23 +08:00 committed by Greg Kroah-Hartman
parent d3c9e81500
commit 59909e2302
1 changed files with 1 additions and 1 deletions
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arch/mips/kernel/topology.c
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@ -20,7 +20,7 @@ static int __init topology_init(void)
for_each_present_cpu(i) {
struct cpu *c = &per_cpu(cpu_devices, i);
c->hotpluggable = 1;
c->hotpluggable = !!i;
ret = register_cpu(c, i);
if (ret)
printk(KERN_WARNING "topology_init: register_cpu %d "