irq_free_descs

函数名称：q_free_descs - free irq descriptors*@from: Start of descriptor range*@cnt: Number of consecutive irqs to free

函数原型：void irq_free_descs(unsigned int from, unsigned int cnt)

返回类型：void

参数：

类型	参数	名称
unsigned int	from
unsigned int	cnt

740

如果from大于等于nr_irqs或from加cnt大于nr_irqs则返回

743

mutex_lock( & sparse_irq_lock)

744

以i小于cnt 循环 free_desc(from + i)

747

bitmap_clear(allocated_irqs, from, cnt)

748

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.

**调用者**
名称	描述
devm_irq_desc_release
irq_sim_init	q_sim_init - Initialize the interrupt simulator: allocate a range of* dummy interrupts.@sim: The interrupt simulator object to initialize.@num_irqs: Number of interrupts to allocate* On success: return the base of the allocated interrupt range.
irq_sim_fini	q_sim_fini - Deinitialize the interrupt simulator: free the interrupt* descriptors and allocated memory.*@sim: The interrupt simulator to tear down.
irq_reserve_ipi	q_reserve_ipi() - Setup an IPI to destination cpumask@domain: IPI domain@dest: cpumask of cpus which can receive the IPI* Allocate a virq that can be used to send IPI to any CPU in dest mask

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