pm_vt_switch

函数名称：There are three cases when a VT switch on suspend/resume are required:* 1) no driver has indicated a requirement one way or another, so preserve* the old behavior* 2) console suspend is disabled, we want to see debug messages across* suspend/resume* 3)

函数原型：static bool pm_vt_switch(void)

返回类型：bool

参数：无

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bool ret = true

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mutex_lock( & vt_switch_mutex)

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如果链表为空则转到:out

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如果非console_suspend_enabled则转到:out

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如果required则转到:out

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ret = false

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out :

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mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.

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返回:ret

**调用者**
名称	描述
pm_prepare_console
pm_restore_console

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告