workqueue: Convert the idle_timer to a timer + work_struct

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A later patch will require a sleepable context in the idle worker timeout
function. Converting worker_pool.idle_timer to a delayed_work gives us just
that, however this would imply turning all idle_timer expiries into
scheduler events (waking up a worker to handle the dwork).

Instead, implement a "custom dwork" where the timer callback does some
extra checks before queuing the associated work.

No change in functionality intended.

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Valentin Schneider 2023-01-12 16:14:29 +00:00 • committed by Tejun Heo

parent 793777bc19

commit 3f959aa3b3

1 changed files with 50 additions and 2 deletions

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kernel/workqueue.c

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