diff options
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 38 |
1 files changed, 12 insertions, 26 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index c2747ac2ae4..47536197ffd 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -23,7 +23,6 @@ #include <linux/node.h> #include <linux/compiler.h> #include <linux/cpumask.h> -#include <linux/mutex.h> struct cpu { int node_id; /* The node which contains the CPU */ @@ -49,6 +48,15 @@ struct notifier_block; #ifdef CONFIG_SMP /* Need to know about CPUs going up/down? */ +#if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) +#define cpu_notifier(fn, pri) { \ + static struct notifier_block fn##_nb __cpuinitdata = \ + { .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) +#endif /* #else #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */ #ifdef CONFIG_HOTPLUG_CPU extern int register_cpu_notifier(struct notifier_block *nb); extern void unregister_cpu_notifier(struct notifier_block *nb); @@ -70,12 +78,13 @@ static inline void unregister_cpu_notifier(struct notifier_block *nb) int cpu_up(unsigned int cpu); void notify_cpu_starting(unsigned int cpu); -extern void cpu_hotplug_init(void); extern void cpu_maps_update_begin(void); extern void cpu_maps_update_done(void); #else /* CONFIG_SMP */ +#define cpu_notifier(fn, pri) do { (void)(fn); } while (0) + static inline int register_cpu_notifier(struct notifier_block *nb) { return 0; @@ -85,10 +94,6 @@ static inline void unregister_cpu_notifier(struct notifier_block *nb) { } -static inline void cpu_hotplug_init(void) -{ -} - static inline void cpu_maps_update_begin(void) { } @@ -103,34 +108,15 @@ extern struct sysdev_class cpu_sysdev_class; #ifdef CONFIG_HOTPLUG_CPU /* Stop CPUs going up and down. */ -static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex) -{ - mutex_lock(cpu_hp_mutex); -} - -static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex) -{ - mutex_unlock(cpu_hp_mutex); -} - extern void get_online_cpus(void); extern void put_online_cpus(void); -#define hotcpu_notifier(fn, pri) { \ - static struct notifier_block fn##_nb __cpuinitdata = \ - { .notifier_call = fn, .priority = pri }; \ - register_cpu_notifier(&fn##_nb); \ -} +#define hotcpu_notifier(fn, pri) cpu_notifier(fn, pri) #define register_hotcpu_notifier(nb) register_cpu_notifier(nb) #define unregister_hotcpu_notifier(nb) unregister_cpu_notifier(nb) int cpu_down(unsigned int cpu); #else /* CONFIG_HOTPLUG_CPU */ -static inline void cpuhotplug_mutex_lock(struct mutex *cpu_hp_mutex) -{ } -static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex) -{ } - #define get_online_cpus() do { } while (0) #define put_online_cpus() do { } while (0) #define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0) |