table of contents
| ABORT_EXCLUSIVE_WAIT(9) | Driver Basics | ABORT_EXCLUSIVE_WAIT(9) |
NAME¶
abort_exclusive_wait - abort exclusive waiting in a queue
SYNOPSIS¶
void abort_exclusive_wait(wait_queue_head_t * q, wait_queue_t * wait, unsigned int mode, void * key);
ARGUMENTS¶
q
waitqueue waited on
wait
wait descriptor
mode
runstate of the waiter to be woken
key
key to identify a wait bit queue or NULL
DESCRIPTION¶
Sets current thread back to running state and removes the wait descriptor from the given waitqueue if still queued.
Wakes up the next waiter if the caller is concurrently woken up through the queue.
This prevents waiter starvation where an exclusive waiter aborts and is woken up concurrently and no one wakes up the next waiter.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |