[PATCH] crypto: qat: Remove deprecated create_workqueue

[PATCH] crypto: qat: Remove deprecated create_workqueue

[Bhaktipriya Shridhar]

alloc_workqueue replaces deprecated create_workqueue().

The workqueue device_reset_wq has workitem &reset_data->reset_work per
adf_reset_dev_data. The workqueue  pf2vf_resp_wq is a workqueue for
PF2VF responses has workitem &pf2vf_resp->pf2vf_resp_work per pf2vf_resp.
The workqueue adf_vf_stop_wq is used to call adf_dev_stop()
asynchronously.

Dedicated workqueues have been used in all cases since the workitems
on the workqueues are involved in operation of crypto which can be used in
the IO path which is depended upon during memory reclaim. Hence,
WQ_MEM_RECLAIM has been set to gurantee forward progress under memory
pressure.
Since there are only a fixed number of work items, explicit concurrency
limit is unnecessary.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
---
 drivers/crypto/qat/qat_common/adf_aer.c    | 3 ++-
 drivers/crypto/qat/qat_common/adf_sriov.c  | 2 +-
 drivers/crypto/qat/qat_common/adf_vf_isr.c | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_aer.c b/drivers/crypto/qat/qat_common/adf_aer.c
index b40d9c8..7bfb57f 100644
--- a/drivers/crypto/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/qat/qat_common/adf_aer.c
@@ -243,7 +243,8 @@ EXPORT_SYMBOL_GPL(adf_disable_aer);

 int adf_init_aer(void)
 {
-	device_reset_wq = create_workqueue("qat_device_reset_wq");
+	device_reset_wq = alloc_workqueue("qat_device_reset_wq",
+					  WQ_MEM_RECLAIM, 0);
 	return !device_reset_wq ? -EFAULT : 0;
 }

diff --git a/drivers/crypto/qat/qat_common/adf_sriov.c b/drivers/crypto/qat/qat_common/adf_sriov.c
index 4a526e2..9320ae1 100644
--- a/drivers/crypto/qat/qat_common/adf_sriov.c
+++ b/drivers/crypto/qat/qat_common/adf_sriov.c
@@ -292,7 +292,7 @@ EXPORT_SYMBOL_GPL(adf_sriov_configure);
 int __init adf_init_pf_wq(void)
 {
 	/* Workqueue for PF2VF responses */
-	pf2vf_resp_wq = create_workqueue("qat_pf2vf_resp_wq");
+	pf2vf_resp_wq = alloc_workqueue("qat_pf2vf_resp_wq", WQ_MEM_RECLAIM, 0);

 	return !pf2vf_resp_wq ? -ENOMEM : 0;
 }
diff --git a/drivers/crypto/qat/qat_common/adf_vf_isr.c b/drivers/crypto/qat/qat_common/adf_vf_isr.c
index aa689ca..bf99e11 100644
--- a/drivers/crypto/qat/qat_common/adf_vf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_vf_isr.c
@@ -321,7 +321,7 @@ EXPORT_SYMBOL_GPL(adf_vf_isr_resource_alloc);

 int __init adf_init_vf_wq(void)
 {
-	adf_vf_stop_wq = create_workqueue("adf_vf_stop_wq");
+	adf_vf_stop_wq = alloc_workqueue("adf_vf_stop_wq", WQ_MEM_RECLAIM, 0);

 	return !adf_vf_stop_wq ? -EFAULT : 0;
 }
--
2.1.4

Re: [PATCH] crypto: qat: Remove deprecated create_workqueue

[Tejun Heo]

On Wed, Jun 08, 2016 at 02:47:47AM +0530, Bhaktipriya Shridhar wrote:
> alloc_workqueue replaces deprecated create_workqueue().
> 
> The workqueue device_reset_wq has workitem &reset_data->reset_work per
> adf_reset_dev_data. The workqueue  pf2vf_resp_wq is a workqueue for
> PF2VF responses has workitem &pf2vf_resp->pf2vf_resp_work per pf2vf_resp.
> The workqueue adf_vf_stop_wq is used to call adf_dev_stop()
> asynchronously.
> 
> Dedicated workqueues have been used in all cases since the workitems
> on the workqueues are involved in operation of crypto which can be used in
> the IO path which is depended upon during memory reclaim. Hence,
> WQ_MEM_RECLAIM has been set to gurantee forward progress under memory
> pressure.
> Since there are only a fixed number of work items, explicit concurrency
> limit is unnecessary.
> 
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>

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

Thanks.

-- 
tejun

Re: [PATCH] crypto: qat: Remove deprecated create_workqueue

[Herbert Xu]

On Wed, Jun 08, 2016 at 02:47:47AM +0530, Bhaktipriya Shridhar wrote:
> alloc_workqueue replaces deprecated create_workqueue().
> 
> The workqueue device_reset_wq has workitem &reset_data->reset_work per
> adf_reset_dev_data. The workqueue  pf2vf_resp_wq is a workqueue for
> PF2VF responses has workitem &pf2vf_resp->pf2vf_resp_work per pf2vf_resp.
> The workqueue adf_vf_stop_wq is used to call adf_dev_stop()
> asynchronously.
> 
> Dedicated workqueues have been used in all cases since the workitems
> on the workqueues are involved in operation of crypto which can be used in
> the IO path which is depended upon during memory reclaim. Hence,
> WQ_MEM_RECLAIM has been set to gurantee forward progress under memory
> pressure.
> Since there are only a fixed number of work items, explicit concurrency
> limit is unnecessary.
> 
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt