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| WAIT_ON_BIT_TIMEOUT(9) | Driver Basics | WAIT_ON_BIT_TIMEOUT(9) |
NAME¶
wait_on_bit_timeout - wait for a bit to be cleared or a timeout elapsesSYNOPSIS¶
int
wait_on_bit_timeout(unsigned long * word,
int bit, unsigned mode,
unsigned long timeout);
ARGUMENTS¶
wordthe word being waited on, a kernel virtual address
bit
the bit of the word being waited on
mode
the task state to sleep in
timeout
timeout, in jiffies
DESCRIPTION¶
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.COPYRIGHT¶
| January 2017 | Kernel Hackers Manual 4.8. |