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wait_on_bit_lock_action(9) - phpMan

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WAIT_ON_BIT_LOCK_ACT(9)                   Driver Basics                   WAIT_ON_BIT_LOCK_ACT(9)



NAME
       wait_on_bit_lock_action - wait for a bit to be cleared, when wanting to set it

SYNOPSIS
       int wait_on_bit_lock_action(unsigned long * word, int bit, wait_bit_action_f * action,
                                   unsigned mode);

ARGUMENTS
       word
           the word being waited on, a kernel virtual address

       bit
           the bit of the word being waited on

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

       mode
           the task state to sleep in

DESCRIPTION
       Use the standard hashed waitqueue table to wait for a bit to be cleared and then to set
       it, and allow the waiting action to be specified. This is like wait_on_bit but allows fine
       control of how the waiting is done.

       Returns zero if the bit was (eventually) found to be clear and was set. Returns non-zero
       if a signal was delivered to the process and the mode allows that signal to wake the
       process.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   WAIT_ON_BIT_LOCK_ACT(9)


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