cpu: Remove try_get_online_cpus()

Now that synchronize_sched_expedited() no longer uses it, there are no users of try_get_online_cpus() in mainline. This commit therefore removes it.

Paul E. McKenney committed 11 years ago

Commit 02ef3c41 parent 807226e2 files · +0 −15Browse files

Unified · Split

2 files

@@ -228,7 +228,6 @@ extern struct bus_type cpu_subsys; · 227 unmodified lines
228	228	extern void cpu_hotplug_begin(void);
229	229	extern void cpu_hotplug_done(void);
230	230	extern void get_online_cpus(void);
231		−extern bool try_get_online_cpus(void);
232	231	extern void put_online_cpus(void);
233	232	extern void cpu_hotplug_disable(void);
234	233	extern void cpu_hotplug_enable(void);
@@ -246,7 +245,6 @@ int cpu_down(unsigned int cpu); · 11 unmodified lines
246	245	static inline void cpu_hotplug_begin(void) {}
247	246	static inline void cpu_hotplug_done(void) {}
248	247	#define get_online_cpus() do { } while (0)
249		−#define try_get_online_cpus() true
250	248	#define put_online_cpus() do { } while (0)
251	249	#define cpu_hotplug_disable() do { } while (0)
252	250	#define cpu_hotplug_enable() do { } while (0)

@@ -102,19 +102,6 @@ void get_online_cpus(void) · 101 unmodified lines
102	102	}
103	103	EXPORT_SYMBOL_GPL(get_online_cpus);
104	104
105		−bool try_get_online_cpus(void)
106		−{
107		− if (cpu_hotplug.active_writer == current)
108		− return true;
109		− if (!mutex_trylock(&cpu_hotplug.lock))
110		− return false;
111		− cpuhp_lock_acquire_tryread();
112		− atomic_inc(&cpu_hotplug.refcount);
113		− mutex_unlock(&cpu_hotplug.lock);
114		− return true;
115		−}
116		−EXPORT_SYMBOL_GPL(try_get_online_cpus);
117		−
118	105	void put_online_cpus(void)
119	106	{
120	107	int refcount;