wait_on_bit_timeout — wait for a bit to be cleared or a timeout elapses
int wait_on_bit_timeout ( | unsigned long * word, |
| int bit, | |
| unsigned mode, | |
unsigned long timeout); |
wordthe word being waited on, a kernel virtual address
bitthe bit of the word being waited on
modethe task state to sleep in
timeouttimeout, in jiffies
Use the standard hashed waitqueue table to wait for a bit
to be cleared. This is similar to wait_on_bit, except also takes a
timeout parameter.
Returned value will be zero if the bit was cleared before the
timeout elapsed, or non-zero if the timeout elapsed or process
received a signal and the mode permitted wakeup on that signal.