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padata: use separate workqueues for parallel and serial work

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padata currently uses one per-CPU workqueue per instance for all work.

Prepare for running parallel jobs on an unbound workqueue by introducing
dedicated workqueues for parallel and serial work.

Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Daniel Jordan
2019-09-05 21:40:27 -04:00
committed by Herbert Xu
parent cc491d8e64
commit 45d153c08b
2 changed files with 22 additions and 12 deletions
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6
include/linux/padata.h
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@@ -127,7 +127,8 @@ struct parallel_data {
* struct padata_instance - The overall control structure.
*
* @cpu_notifier: cpu hotplug notifier.
* @wq: The workqueue in use.
* @parallel_wq: The workqueue used for parallel work.
* @serial_wq: The workqueue used for serial work.
* @pd: The internal control structure.
* @cpumask: User supplied cpumasks for parallel and serial works.
* @cpumask_change_notifier: Notifiers chain for user-defined notify
@@ -139,7 +140,8 @@ struct parallel_data {
*/
struct padata_instance {
struct hlist_node node;
struct workqueue_struct *wq;
struct workqueue_struct *parallel_wq;
struct workqueue_struct *serial_wq;
struct parallel_data *pd;
struct padata_cpumask cpumask;
struct blocking_notifier_head cpumask_change_notifier;