diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-12 12:53:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-12 12:53:54 -0800 |
| commit | cbaa1576c4547b97cd7064469dcb5f7752def99f (patch) | |
| tree | 80fa397eb38bf5220b2159dc937036d11be676f9 /include | |
| parent | 92c020d08d83673ecd15a9069d4457378668da31 (diff) | |
| parent | 777c6e0daebb3fcefbbd6f620410a946b07ef6d0 (diff) | |
Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull hotplug API fix from Ingo Molnar:
"Late breaking fix from the v4.9 cycle: fix a hotplug register/
unregister notifier API asymmetry bug that can cause kernel warnings
(and worse) with certain Kconfig combinations"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hotplug: Make register and unregister notifier API symmetric
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpu.h | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index b886dc17f2f3..e571128ad99a 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -93,22 +93,16 @@ extern bool cpuhp_tasks_frozen; { .notifier_call = fn, .priority = pri }; \ __register_cpu_notifier(&fn##_nb); \ } -#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */ -#define cpu_notifier(fn, pri) do { (void)(fn); } while (0) -#define __cpu_notifier(fn, pri) do { (void)(fn); } while (0) -#endif /* #else #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */ -#ifdef CONFIG_HOTPLUG_CPU extern int register_cpu_notifier(struct notifier_block *nb); extern int __register_cpu_notifier(struct notifier_block *nb); extern void unregister_cpu_notifier(struct notifier_block *nb); extern void __unregister_cpu_notifier(struct notifier_block *nb); -#else -#ifndef MODULE -extern int register_cpu_notifier(struct notifier_block *nb); -extern int __register_cpu_notifier(struct notifier_block *nb); -#else +#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */ +#define cpu_notifier(fn, pri) do { (void)(fn); } while (0) +#define __cpu_notifier(fn, pri) do { (void)(fn); } while (0) + static inline int register_cpu_notifier(struct notifier_block *nb) { return 0; @@ -118,7 +112,6 @@ static inline int __register_cpu_notifier(struct notifier_block *nb) { return 0; } -#endif static inline void unregister_cpu_notifier(struct notifier_block *nb) { |