wait_on_atomic_t man page on OpenSuSE

wait_on_atomic_t man page on OpenSuSE

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WAIT_ON_ATOMIC_T(9)		 Driver Basics		   WAIT_ON_ATOMIC_T(9)

NAME
       wait_on_atomic_t - Wait for an atomic_t to become 0

SYNOPSIS
       int wait_on_atomic_t(atomic_t * val, int (*action) (atomic_t *),
			    unsigned mode);

ARGUMENTS
       val
	   The atomic value being waited on, a kernel virtual address

       action
	   the function used to sleep, which may take special actions

       mode
	   the task state to sleep in

DESCRIPTION
       Wait for an atomic_t to become 0. We abuse the bit-wait waitqueue table
       for the purpose of getting a waitqueue, but we set the key to a bit
       number outside of the target 'word'.

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013		   WAIT_ON_ATOMIC_T(9)

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