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From: Nitesh Narayan Lal <nitesh@redhat.com>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
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Subject: [PATCH v5 12/14] hinic: Use irq_set_affinity_and_hint
Date: Tue, 20 Jul 2021 19:26:22 -0400	[thread overview]
Message-ID: <20210720232624.1493424-13-nitesh@redhat.com> (raw)
In-Reply-To: <20210720232624.1493424-1-nitesh@redhat.com>

The driver uses irq_set_affinity_hint() to:

- Set the affinity_hint which is consumed by the userspace for
  distributing the interrupts

- Enforce affinity

As per commit 352f58b0d9f2 ("net-next/hinic: Set Rxq irq to specific cpu
for NUMA"), the hinic driver enforces its own affinity to bind IRQs to the
local NUMA node. However, irq_set_affinity_hint() applying the provided
cpumask as an affinity for the interrupt is an undocumented side effect.

To remove this side effect irq_set_affinity_hint() has been marked as
deprecated and new interfaces have been introduced. Hence, replace the
irq_set_affinity_hint() with the new interface irq_set_affinity_and_hint()
where the provided mask needs to be applied as the affinity and
affinity_hint pointer needs to be set and replace with
irq_update_affinity_hint() where only affinity_hint needs to be updated.

Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
---
 drivers/net/ethernet/huawei/hinic/hinic_rx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
index fed3b6bc0d76..b33ed4d92b71 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_rx.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
@@ -548,7 +548,7 @@ static int rx_request_irq(struct hinic_rxq *rxq)
 		goto err_req_irq;
 
 	cpumask_set_cpu(qp->q_id % num_online_cpus(), &rq->affinity_mask);
-	err = irq_set_affinity_hint(rq->irq, &rq->affinity_mask);
+	err = irq_set_affinity_and_hint(rq->irq, &rq->affinity_mask);
 	if (err)
 		goto err_irq_affinity;
 
@@ -565,7 +565,7 @@ static void rx_free_irq(struct hinic_rxq *rxq)
 {
 	struct hinic_rq *rq = rxq->rq;
 
-	irq_set_affinity_hint(rq->irq, NULL);
+	irq_update_affinity_hint(rq->irq, NULL);
 	free_irq(rq->irq, rxq);
 	rx_del_napi(rxq);
 }
-- 
2.27.0


  parent reply	other threads:[~2021-07-20 23:30 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 23:26 [PATCH v5 00/14] genirq: Cleanup the abuse of irq_set_affinity_hint() Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 01/14] genirq: Provide new interfaces for affinity hints Nitesh Narayan Lal
2021-08-06 15:51   ` Ming Lei
2021-07-20 23:26 ` [PATCH v5 02/14] iavf: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 03/14] i40e: " Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 04/14] scsi: megaraid_sas: Use irq_set_affinity_and_hint Nitesh Narayan Lal
2021-08-06 11:31   ` Sumit Saxena
2021-07-20 23:26 ` [PATCH v5 05/14] scsi: mpt3sas: " Nitesh Narayan Lal
2021-08-06  8:54   ` Sreekanth Reddy
2021-07-20 23:26 ` [PATCH v5 06/14] RDMA/irdma: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-07-22 18:25   ` Nikolova, Tatyana E
2021-07-20 23:26 ` [PATCH v5 07/14] enic: " Nitesh Narayan Lal
2021-08-16 17:53   ` Christian Benvenuti (benve)
2021-07-20 23:26 ` [PATCH v5 08/14] be2net: " Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 09/14] ixgbe: " Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 10/14] mailbox: " Nitesh Narayan Lal
2021-08-16 18:11   ` Jassi Brar
2021-07-20 23:26 ` [PATCH v5 11/14] scsi: lpfc: Use irq_set_affinity Nitesh Narayan Lal
2021-07-23 17:15   ` James Smart
2021-07-20 23:26 ` Nitesh Narayan Lal [this message]
2021-07-20 23:26 ` [PATCH v5 13/14] net/mlx5: Use irq_set_affinity_and_hint Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 14/14] net/mlx4: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-08-02 15:26 ` [PATCH v5 00/14] genirq: Cleanup the abuse of irq_set_affinity_hint() Nitesh Lal
2021-08-06  3:04   ` Martin K. Petersen
2021-08-06 14:56     ` Nitesh Lal
2021-08-16 15:50   ` Nitesh Lal
2021-08-30 15:38     ` Nitesh Lal
2021-08-30 15:40       ` Nitesh Lal

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