workqueue: Factor out clearing of workqueue-only attrs fields

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workqueue_attrs can be used for both workqueues and worker_pools. However,
some fields, currently only ->ordered, only apply to workqueues and should
be cleared to the default / invalid values.

Currently, an unbound workqueue explicitly clears attrs->ordered in
get_unbound_pool() after copying the source workqueue attrs, while per-cpu
workqueues rely on the fact that zeroing on allocation gives us the desired
default value for pool->attrs->ordered.

This is fragile. Let's add wqattrs_clear_for_pool() which clears
attrs->ordered and is called from both init_worker_pool() and
get_unbound_pool(). This will ease adding more workqueue-only attrs fields.

In get_unbound_pool(), pool->node initialization is moved upwards for
readability. This shouldn't cause any behavior changes.

Signed-off-by: Tejun Heo <tj@kernel.org>

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This commit is contained in:

Tejun Heo 2023-08-07 15:57:24 -10:00

parent 0f36ee24cd

commit 5de7a03cac

1 changed files with 14 additions and 6 deletions

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kernel/workqueue.c

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