A handler can’t transfer data to or from user space
2013-11-20 10:20
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A handler can’t transfer data to or from user space, because it
doesn’t execute in the context of a process. Handlers also cannot do anything that
would sleep, such as calling wait_event, allocating memory with anything other than
GFP_ATOMIC, or locking a semaphore. Finally, handlers cannot call schedule.
“interrupt-pending” bit has been cleared.
doesn’t execute in the context of a process. Handlers also cannot do anything that
would sleep, such as calling wait_event, allocating memory with anything other than
GFP_ATOMIC, or locking a semaphore. Finally, handlers cannot call schedule.
“interrupt-pending” bit has been cleared.
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