The patch titled
s390 appldata_base: Misc cpuinit annotations and bugfix
has been added to the -mm tree. Its filename is
s390-appldata_base-misc-cpuinit-annotations-and-bugfix.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: s390 appldata_base: Misc cpuinit annotations and bugfix
From: Satyam Sharma <satyam@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/appldata/appldata_base.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
diff -puN arch/s390/appldata/appldata_base.c~s390-appldata_base-misc-cpuinit-annotations-and-bugfix arch/s390/appldata/appldata_base.c
--- a/arch/s390/appldata/appldata_base.c~s390-appldata_base-misc-cpuinit-annotations-and-bugfix
+++ a/arch/s390/appldata/appldata_base.c
@@ -547,8 +547,7 @@ static void __cpuinit appldata_online_cp
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);
_
Patches currently in -mm which might be from satyam@xxxxxxxxxxxxx are
origin.patch
ia64-tree-wide-misc-__cpuinitdata-init-exit.patch
git-ieee1394.patch
ehca_irq-misc-cpuinit-section-annotations-and-ifdef-cleanups.patch
git-netdev-all.patch
git-net.patch
s390-appldata_base-misc-cpuinit-annotations-and-bugfix.patch
s390-appldata_base-remove-module_exit-function-and-modular.patch
use-mutex-instead-of-semaphore-in-the-onstream-scsi-tape-driver.patch
ll_rw_blk-blk_cpu_notifier-should-be-__cpuinitdata.patch
intel_cacheinfo-misc-section-annotation-fixes.patch
intel_cacheinfo-call-cache_add_dev-from-cache_sysfs_init.patch
i386-cpuid-misc-cpuinit-annotations.patch
x86-msr-driver-misc-cpuinit-annotations.patch
therm_throtc-fix-section-mismatch.patch
slub-slob-use-unlikely-for-kfreezero_or_null_ptr-check.patch
argv_split-allow-argv_split-to-handle-null-pointer-in-argcp-parameter-gracefully.patch
redefine-unregister_hotcpu_notifier-hotplug_cpu.patch
-
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