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padata: allocate workqueue internally

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Move workqueue allocation inside of padata to prepare for further
changes to how padata uses workqueues.

Guarantees the workqueue is created with max_active=1, which padata
relies on to work correctly.  No functional change.

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: Jonathan Corbet <corbet@lwn.net>
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-doc@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 21:40:21 -04:00
committed by Herbert Xu
parent 007b3cf0af
commit b128a30409
4 changed files with 24 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
crypto/pcrypt.c
View File

@@ -20,7 +20,6 @@
struct padata_pcrypt {
struct padata_instance *pinst;
struct workqueue_struct *wq;
/*
* Cpumask for callback CPUs. It should be
@@ -397,14 +396,9 @@ static int pcrypt_init_padata(struct padata_pcrypt *pcrypt,
get_online_cpus();
pcrypt->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM | WQ_CPU_INTENSIVE,
1, name);
if (!pcrypt->wq)
goto err;
pcrypt->pinst = padata_alloc_possible(pcrypt->wq);
pcrypt->pinst = padata_alloc_possible(name);
if (!pcrypt->pinst)
goto err_destroy_workqueue;
goto err;
mask = kmalloc(sizeof(*mask), GFP_KERNEL);
if (!mask)
@@ -437,8 +431,6 @@ err_free_cpumask:
kfree(mask);
err_free_padata:
padata_free(pcrypt->pinst);
err_destroy_workqueue:
destroy_workqueue(pcrypt->wq);
err:
put_online_cpus();
@@ -452,7 +444,6 @@ static void pcrypt_fini_padata(struct padata_pcrypt *pcrypt)
padata_stop(pcrypt->pinst);
padata_unregister_cpumask_notifier(pcrypt->pinst, &pcrypt->nblock);
destroy_workqueue(pcrypt->wq);
padata_free(pcrypt->pinst);
}