Some features depend on the boot cpu, for instance, hibernate/suspend.
So disable hotplug for the boot cpu.
Signed-off-by: Zhao Chenhui <chenhui.z...@freescale.com>
---
arch/powerpc/kernel/sysfs.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index e68a845..294b1c4e 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -655,8 +655,10 @@ static int __init topology_init(void)
* CPU. For instance, the boot cpu might never be valid
* for hotplugging.
*/
- if (ppc_md.cpu_die)
+ if (ppc_md.cpu_die && cpu != boot_cpuid)
c->hotpluggable = 1;
+ else
+ c->hotpluggable = 0;
if (cpu_online(cpu) || c->hotpluggable) {
register_cpu(c, cpu);
--
1.7.3
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