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From: "Nikolova, Tatyana E" <tatyana.e.nikolova@intel.com>
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Subject: RE: [PATCH v5 06/14] RDMA/irdma: Use irq_update_affinity_hint
Date: Thu, 22 Jul 2021 18:25:12 +0000	[thread overview]
Message-ID: <DM6PR11MB4692D7AB064416EFBBB53331CBE49@DM6PR11MB4692.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210720232624.1493424-7-nitesh@redhat.com>



> -----Original Message-----
> From: Nitesh Narayan Lal <nitesh@redhat.com>
> Sent: Tuesday, July 20, 2021 6:26 PM
> To: linux-kernel@vger.kernel.org; linux-scsi@vger.kernel.org; intel-wired-
> lan@lists.osuosl.org; netdev@vger.kernel.org; linux-api@vger.kernel.org;
> linux-pci@vger.kernel.org; tglx@linutronix.de; Brandeburg, Jesse
> <jesse.brandeburg@intel.com>; robin.murphy@arm.com;
> mtosatti@redhat.com; mingo@kernel.org; jbrandeb@kernel.org;
> frederic@kernel.org; juri.lelli@redhat.com; abelits@marvell.com;
> bhelgaas@google.com; rostedt@goodmis.org; peterz@infradead.org;
> davem@davemloft.net; akpm@linux-foundation.org; sfr@canb.auug.org.au;
> stephen@networkplumber.org; rppt@linux.vnet.ibm.com;
> chris.friesen@windriver.com; maz@kernel.org; nhorman@tuxdriver.com;
> pjwaskiewicz@gmail.com; sassmann@redhat.com; thenzl@redhat.com;
> kashyap.desai@broadcom.com; sumit.saxena@broadcom.com;
> shivasharan.srikanteshwara@broadcom.com;
> sathya.prakash@broadcom.com; sreekanth.reddy@broadcom.com;
> suganath-prabu.subramani@broadcom.com; james.smart@broadcom.com;
> dick.kennedy@broadcom.com; jkc@redhat.com; Latif, Faisal
> <faisal.latif@intel.com>; Saleem, Shiraz <shiraz.saleem@intel.com>;
> tariqt@nvidia.com; ahleihel@redhat.com; kheib@redhat.com;
> borisp@nvidia.com; saeedm@nvidia.com; benve@cisco.com;
> govind@gmx.com; jassisinghbrar@gmail.com;
> ajit.khaparde@broadcom.com; sriharsha.basavapatna@broadcom.com;
> somnath.kotur@broadcom.com; nilal@redhat.com; Nikolova, Tatyana E
> <tatyana.e.nikolova@intel.com>; Ismail, Mustafa
> <mustafa.ismail@intel.com>; ahs3@redhat.com; leonro@nvidia.com;
> chandrakanth.patil@broadcom.com; bjorn.andersson@linaro.org;
> chunkuang.hu@kernel.org; yongqiang.niu@mediatek.com;
> baolin.wang7@gmail.com; poros@redhat.com; minlei@redhat.com;
> emilne@redhat.com; jejb@linux.ibm.com; martin.petersen@oracle.com;
> _govind@gmx.com; kabel@kernel.org; viresh.kumar@linaro.org;
> Tushar.Khandelwal@arm.com; kuba@kernel.org
> Subject: [PATCH v5 06/14] RDMA/irdma: Use irq_update_affinity_hint
> 
> The driver uses irq_set_affinity_hint() to update the affinity_hint mask that
> is consumed by the userspace to distribute the interrupts. However, under
> the hood irq_set_affinity_hint() also applies the provided cpumask (if not
> NULL) as the affinity for the given interrupt which 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_update_affinity_hint() that
> only updates the affinity_hint pointer.
> 
> 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..ec8de708a4df 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_update_affinity_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

Acked-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>

  reply	other threads:[~2021-07-22 18:25 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 [this message]
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 ` [PATCH v5 12/14] hinic: Use irq_set_affinity_and_hint Nitesh Narayan Lal
2021-07-20 23:26 ` [PATCH v5 13/14] net/mlx5: " 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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