[PATCH] powerpc/sysfs: disable hotplug for the boot cpu
From: Zhao Chenhui <hidden>
Date: 2013-05-28 08:00:26
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Some features depend on the boot cpu, for instance, hibernate/suspend. So disable hotplug for the boot cpu. Signed-off-by: Zhao Chenhui <redacted> --- 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