other versions
- jessie 3.16.56-1+deb8u1
WORKQUEUE_CONGESTED(9) | Driver Basics | WORKQUEUE_CONGESTED(9) |
NAME¶
workqueue_congested - test whether a workqueue is congestedSYNOPSIS¶
bool workqueue_congested(int cpu,
struct workqueue_struct * wq);
ARGUMENTS¶
cpuCPU in question
wq
target workqueue
DESCRIPTION¶
Test whether wq's cpu workqueue for cpu is congested. There is no synchronization around this function and the test result is unreliable and only useful as advisory hints or for debugging. If cpu is WORK_CPU_UNBOUND, the test is performed on the local CPU. Note that both per-cpu and unbound workqueues may be associated with multiple pool_workqueues which have separate congested states. A workqueue being congested on one CPU doesn't mean the workqueue is also contested on other CPUs / NUMA nodes.RETURN¶
true if congested, false otherwise.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |