This is a note to let you know that I've just added the patch titled
MIPS: CPU#0 is not hotpluggable
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-cpu-0-is-not-hotpluggable.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9cce844abf07b683cff5f0273977d5f8d0af94c7 Mon Sep 17 00:00:00 2001
From: Huacai Chen <chenhc@xxxxxxxxxx>
Date: Thu, 16 Jul 2020 18:40:23 +0800
Subject: MIPS: CPU#0 is not hotpluggable
From: Huacai Chen <chenhc@xxxxxxxxxx>
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@xxxxxxxxxxxxxxx
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/kernel/topology.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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 "
Patches currently in stable-queue which might be from chenhc@xxxxxxxxxx are
queue-5.4/mips-cpu-0-is-not-hotpluggable.patch
