1WORKQUEUE_CONGESTED(9)           Driver Basics          WORKQUEUE_CONGESTED(9)
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NAME

6       workqueue_congested - test whether a workqueue is congested
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SYNOPSIS

9       bool workqueue_congested(int cpu, struct workqueue_struct * wq);
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ARGUMENTS

12       cpu
13           CPU in question
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15       wq
16           target workqueue
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DESCRIPTION

19       Test whether wq's cpu workqueue for cpu is congested. There is no
20       synchronization around this function and the test result is unreliable
21       and only useful as advisory hints or for debugging.
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23       If cpu is WORK_CPU_UNBOUND, the test is performed on the local CPU.
24       Note that both per-cpu and unbound workqueues may be associated with
25       multiple pool_workqueues which have separate congested states. A
26       workqueue being congested on one CPU doesn't mean the workqueue is also
27       contested on other CPUs / NUMA nodes.
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RETURNS

30       true if congested, false otherwise.
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33Kernel Hackers Manual 3.10         June 2019            WORKQUEUE_CONGESTED(9)
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