[PATCH] generate hotplug events for cpu online

We already do kobject_hotplug for cpu offline; this adds a kobject_hotplug
call for the online case.  This is being requested by developers of an
application which wants to be notified about both kinds of events.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 0bf2dc11cdb8..b79badd0f158 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -44,6 +44,8 @@ static ssize_t store_online(struct sys_device *dev, const char *buf,
                 ret = smp_prepare_cpu(cpu->sysdev.id);
                 if (!ret)
                         ret = cpu_up(cpu->sysdev.id);
+                if (!ret)
+                        kobject_hotplug(&dev->kobj, KOBJ_ONLINE);
                 break;
         default:
                 ret = -EINVAL;