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From: Nitesh Narayan Lal <nitesh@redhat.com>
To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
	intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
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Subject: [PATCH v3 06/14] RDMA/irdma: Use irq_set_affinity_and_hint
Date: Tue, 13 Jul 2021 17:14:54 -0400	[thread overview]
Message-ID: <20210713211502.464259-7-nitesh@redhat.com> (raw)
In-Reply-To: <20210713211502.464259-1-nitesh@redhat.com>

The driver uses irq_set_affinity_hint() to update the affinity_hint mask
that is consumed by the userspace to distribute the interrupts and to apply
the provided mask as the affinity for its interrupts. 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/infiniband/hw/irdma/hw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index 7afb8a6a0526..7f13a051d4de 100644
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -537,7 +537,7 @@ static void irdma_destroy_irq(struct irdma_pci_f *rf,
 	struct irdma_sc_dev *dev = &rf->sc_dev;
 
 	dev->irq_ops->irdma_dis_irq(dev, msix_vec->idx);
-	irq_set_affinity_hint(msix_vec->irq, NULL);
+	irq_update_affinity_hint(msix_vec->irq, NULL);
 	free_irq(msix_vec->irq, dev_id);
 }
 
@@ -1087,7 +1087,7 @@ irdma_cfg_ceq_vector(struct irdma_pci_f *rf, struct irdma_ceq *iwceq,
 	}
 	cpumask_clear(&msix_vec->mask);
 	cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
-	irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
+	irq_set_affinity_and_hint(msix_vec->irq, &msix_vec->mask);
 	if (status) {
 		ibdev_dbg(&rf->iwdev->ibdev, "ERR: ceq irq config fail\n");
 		return IRDMA_ERR_CFG;
-- 
2.27.0


WARNING: multiple messages have this Message-ID (diff)
From: Nitesh Narayan Lal <nitesh@redhat.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [PATCH v3 06/14] RDMA/irdma: Use irq_set_affinity_and_hint
Date: Tue, 13 Jul 2021 17:14:54 -0400	[thread overview]
Message-ID: <20210713211502.464259-7-nitesh@redhat.com> (raw)
In-Reply-To: <20210713211502.464259-1-nitesh@redhat.com>

The driver uses irq_set_affinity_hint() to update the affinity_hint mask
that is consumed by the userspace to distribute the interrupts and to apply
the provided mask as the affinity for its interrupts. 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/infiniband/hw/irdma/hw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c
index 7afb8a6a0526..7f13a051d4de 100644
--- a/drivers/infiniband/hw/irdma/hw.c
+++ b/drivers/infiniband/hw/irdma/hw.c
@@ -537,7 +537,7 @@ static void irdma_destroy_irq(struct irdma_pci_f *rf,
 	struct irdma_sc_dev *dev = &rf->sc_dev;
 
 	dev->irq_ops->irdma_dis_irq(dev, msix_vec->idx);
-	irq_set_affinity_hint(msix_vec->irq, NULL);
+	irq_update_affinity_hint(msix_vec->irq, NULL);
 	free_irq(msix_vec->irq, dev_id);
 }
 
@@ -1087,7 +1087,7 @@ irdma_cfg_ceq_vector(struct irdma_pci_f *rf, struct irdma_ceq *iwceq,
 	}
 	cpumask_clear(&msix_vec->mask);
 	cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
-	irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
+	irq_set_affinity_and_hint(msix_vec->irq, &msix_vec->mask);
 	if (status) {
 		ibdev_dbg(&rf->iwdev->ibdev, "ERR: ceq irq config fail\n");
 		return IRDMA_ERR_CFG;
-- 
2.27.0


  parent reply	other threads:[~2021-07-13 21:16 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13 21:14 [PATCH v3 00/14] genirq: Cleanup the usage of irq_set_affinity_hint Nitesh Narayan Lal
2021-07-13 21:14 ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 01/14] genirq: Provide new interfaces for affinity hints Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 02/14] iavf: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:51   ` Jesse Brandeburg
2021-07-13 21:51     ` [Intel-wired-lan] " Jesse Brandeburg
2021-07-13 21:14 ` [PATCH v3 03/14] i40e: " Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:52   ` Jesse Brandeburg
2021-07-13 21:52     ` [Intel-wired-lan] " Jesse Brandeburg
2021-07-13 21:14 ` [PATCH v3 04/14] scsi: megaraid_sas: Use irq_set_affinity_and_hint Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 05/14] scsi: mpt3sas: " Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` Nitesh Narayan Lal [this message]
2021-07-13 21:14   ` [Intel-wired-lan] [PATCH v3 06/14] RDMA/irdma: " Nitesh Narayan Lal
2021-07-14 12:03   ` Leon Romanovsky
2021-07-14 12:03     ` [Intel-wired-lan] " Leon Romanovsky
2021-07-14 12:56     ` Nitesh Lal
2021-07-14 12:56       ` [Intel-wired-lan] " Nitesh Lal
2021-07-14 13:02       ` Leon Romanovsky
2021-07-14 13:02         ` [Intel-wired-lan] " Leon Romanovsky
2021-07-15 13:25         ` Nitesh Lal
2021-07-15 13:25           ` [Intel-wired-lan] " Nitesh Lal
2021-07-13 21:14 ` [PATCH v3 07/14] enic: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 08/14] be2net: " Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 09/14] ixgbe: " Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 22:01   ` Jesse Brandeburg
2021-07-13 22:01     ` [Intel-wired-lan] " Jesse Brandeburg
2021-07-13 21:14 ` [PATCH v3 10/14] mailbox: " Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:14 ` [PATCH v3 11/14] scsi: lpfc: Use irq_set_affinity Nitesh Narayan Lal
2021-07-13 21:14   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:15 ` [PATCH v3 12/14] hinic: Use irq_set_affinity_and_hint Nitesh Narayan Lal
2021-07-13 21:15   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-13 21:15 ` [PATCH v3 13/14] net/mlx5: " Nitesh Narayan Lal
2021-07-13 21:15   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-14 12:01   ` Leon Romanovsky
2021-07-14 12:01     ` [Intel-wired-lan] " Leon Romanovsky
2021-07-13 21:15 ` [PATCH v3 14/14] net/mlx4: Use irq_update_affinity_hint Nitesh Narayan Lal
2021-07-13 21:15   ` [Intel-wired-lan] " Nitesh Narayan Lal
2021-07-14 11:19   ` Tariq Toukan
2021-07-14 11:19     ` [Intel-wired-lan] " Tariq Toukan

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