The Devil's in the Details

This article, the third of five on writing character device drivers, introduces concepts of reading, writing, and using ioctl-calls.
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Re: Kernel Korner: The Devil's in the Details

Anonymous's picture

Hi

When you call wake_up_interruptible () from the handler the control unpends the sleeping task finish the read system call from the and then return back to continue the handler after calling wake_up ? Or else both the wake_up and unpending sleep task goes in parallel.

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