__percpu_ref_switch_to_percpu

Name:__percpu_ref_switch_to_percpu

Proto:static void __percpu_ref_switch_to_percpu(struct percpu_ref *ref)

Type:void

Parameter:

Type	Parameter	Name
struct percpu_ref *	ref

196

__percpu * percpu_count = percpu_count_ptr(ref)

199

BUG_ON(!percpu_count)

201

If Not (* The low bit of the pointer indicates whether the ref is in percpu * mode; if set, then get/put will manipulate the atomic_t. & __PERCPU_REF_ATOMIC) Then Return

204

If WARN_ON_ONCE(!allow_reinit) Then Return

207

atomic_long_add(Initially, a percpu refcount is just a set of percpu counters, & count)

215

for_each_possible_cpu(cpu)

216

per_cpu_ptr(percpu_count, cpu) = 0

218

smp_store_release( & * The low bit of the pointer indicates whether the ref is in percpu * mode; if set, then get/put will manipulate the atomic_t., * The low bit of the pointer indicates whether the ref is in percpu * mode; if set, then get/put will manipulate the atomic_t. & ~__PERCPU_REF_ATOMIC)

**Caller**
Name	Describe
__percpu_ref_switch_mode

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