__cpuhp_setup_state_cpuslocked

Name:__cpuhp_setup_state_cpuslocked - Setup the callbacks for an hotplug machine state*@state: The state to setup*@invoke: If true, the startup function is invoked for cpus where* cpu state >= @state*@startup: startup callback function*@teardown: teardown

Proto:int __cpuhp_setup_state_cpuslocked(enum cpuhp_state state, const char *name, bool invoke, int (*startup)(unsigned int cpu), int (*teardown)(unsigned int cpu), bool multi_instance)

Type:int

Parameter:

Type	Parameter	Name
enum cpuhp_state	state
const char *	name
bool	invoke
int (*	startup
int (*	teardown
bool	multi_instance

1754

ret = 0

1757

lockdep_assert_cpus_held()

1759

If Sanity check for callbacks || Not name Then Return -EINVAL

1762

mutex_lock( & cpuhp_state_mutex)

1764

ret = cpuhp_store_callbacks(state, name, startup, teardown, multi_instance)

1767

dynstate = state == CPUHP_AP_ONLINE_DYN

1768

If ret > 0 && dynstate Then

1769

1770

ret = 0

1773

If ret || Not invoke || Not startup Then Go to out

1780

for_each_present_cpu(cpu)

1781

st = per_cpu_ptr( & cpuhp_state, cpu)

1782

cpustate = state

1784

If cpustate < state Then Continue

1787

ret = Call the startup/teardown function for a step either on the AP or* on the current CPU.

1788

If ret Then

1789

If teardown Then Called from __cpuhp_setup_state on a recoverable failure.* Note: The teardown callbacks for rollback are not allowed to fail!

1791

cpuhp_store_callbacks(state, NULL, NULL, NULL, false)

1792

Go to out

1795

out :

1796

mutex_unlock( & cpuhp_state_mutex)

1801

If Not ret && dynstate Then Return state

1803

Return ret

**Caller**
Name	Describe
__cpuhp_setup_state

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