appldata_offline_cpu() is only called from __cpuinit-marked hotplug
notifier callback and from the __exit-marked module_exit function,
therefore candidate for __cpuexit.
BTW the __exit module_exit function appldata_exit() of this driver
fails to unregister_hotcpu_notifier() the notifier_block that was
registered by appldata_init() during module startup. This will lead
to oops if hotplug notification comes after module has been unloaded.
Let's fix this by unregistering the notifier appropriately (before
appldata_offline_cpu()'ing the CPUs).
Signed-off-by: Satyam Sharma <satyam@infradead.org>
---
arch/s390/appldata/appldata_base.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 62391fb..a355d81 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -547,8 +547,7 @@ static void __cpuinit appldata_online_cpu(int cpu)
spin_unlock(&appldata_timer_lock);
}
-static void
-appldata_offline_cpu(int cpu)
+static void __cpuexit appldata_offline_cpu(int cpu)
{
del_virt_timer(&per_cpu(appldata_timer, cpu));
if (atomic_dec_and_test(&appldata_expire_count)) {
@@ -560,9 +559,9 @@ appldata_offline_cpu(int cpu)
spin_unlock(&appldata_timer_lock);
}
-static int __cpuinit
-appldata_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu)
+static int __cpuinit appldata_cpu_notify(struct notifier_block *self,
+ unsigned long action,
+ void *hcpu)
{
switch (action) {
case CPU_ONLINE:
@@ -646,6 +645,8 @@ static void __exit appldata_exit(void)
}
spin_unlock(&appldata_ops_lock);
+ unregister_hotcpu_notifier(&appldata_nb);
+
for_each_online_cpu(i)
appldata_offline_cpu(i);
-
