From: Huacai Chen <chenhc@lemote.com>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org, Fuxin Zhang <zhangfx@lemote.com>,
Zhangjin Wu <wuzhangjin@gmail.com>,
Huacai Chen <chenhuacai@gmail.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Huacai Chen <chenhc@lemote.com>,
stable@vger.kernel.org
Subject: [PATCH] MIPS: CPU#0 is not hotpluggable
Date: Wed, 15 Jul 2020 13:35:29 +0800 [thread overview]
Message-ID: <1594791329-20563-1-git-send-email-chenhc@lemote.com> (raw)
Now CPU#0 is not hotpluggable on MIPS, so prevent to create /sys/devices
/system/cpu/cpu0/online which confusing some user-space tools.
Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhc@lemote.com>
---
arch/mips/kernel/topology.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/kernel/topology.c b/arch/mips/kernel/topology.c
index cd3e1f8..08ad637 100644
--- a/arch/mips/kernel/topology.c
+++ b/arch/mips/kernel/topology.c
@@ -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 "
--
2.7.0
next reply other threads:[~2020-07-15 5:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-15 5:35 Huacai Chen [this message]
2020-07-15 7:56 ` [PATCH] MIPS: CPU#0 is not hotpluggable Sergei Shtylyov
2020-07-15 8:09 ` Huacai Chen
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