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标题: 2.6 linux内核可以配置成中断(或软中断)线程化么 [打印本页]

作者: mordorwww 时间: 2013-12-06 09:04
标题: 2.6 linux内核可以配置成中断(或软中断)线程化么
2.6 linux内核可以配置成中断(或软中断)线程化么

作者: lenky0401 时间: 2013-12-06 11:05
之前在lwn上看到过一篇文章，貌似有这个发展趋势。最后不知道是否有合入mainline。
楼主2.6哪个版本？需要查一下commit log。

作者: mordorwww 时间: 2013-12-06 11:16

lenky0401 发表于 2013-12-06 11:05
之前在lwn上看到过一篇文章，貌似有这个发展趋势。最后不知道是否有合入mainline。
楼主2.6哪个版本？需要 ...

kernel version 2.6.36

作者: asuka2001 时间: 2013-12-06 11:57
回复 1# mordorwww

/**
* request_threaded_irq - allocate an interrupt line
* @irq: Interrupt line to allocate
* @handler: Function to be called when the IRQ occurs.
*    Primary handler for threaded interrupts
*    If NULL and thread_fn != NULL the default
*    primary handler is installed
* @thread_fn: Function called from the irq handler thread
*       If NULL, no irq thread is created
* @irqflags: Interrupt type flags
* @devname: An ascii name for the claiming device
* @dev_id: A cookie passed back to the handler function
*
* This call allocates interrupt resources and enables the
* interrupt line and IRQ handling. From the point this
* call is made your handler function may be invoked. Since
* your handler function must clear any interrupt the board
* raises, you must take care both to initialise your hardware
* and to set up the interrupt handler in the right order.
*
* If you want to set up a threaded irq handler for your device
* then you need to supply @handler and @thread_fn. @handler is
* still called in hard interrupt context and has to check
* whether the interrupt originates from the device. If yes it
* needs to disable the interrupt on the device and return
* IRQ_WAKE_THREAD which will wake up the handler thread and run
* @thread_fn. This split handler design is necessary to support
* shared interrupts.
*
* Dev_id must be globally unique. Normally the address of the
* device data structure is used as the cookie. Since the handler
* receives this value it makes sense to use it.
*
* If your interrupt is shared you must pass a non NULL dev_id
* as this is required when freeing the interrupt.
*
* Flags:
*
* IRQF_SHARED Interrupt is shared
* IRQF_TRIGGER_* Specify active edge(s) or level
*
*/

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