From: James Smart <jsmart2021@gmail.com>
To: Nitesh Narayan Lal <nitesh@redhat.com>,
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, 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,
faisal.latif@intel.com, 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,
tatyana.e.nikolova@intel.com, 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: Re: [PATCH v5 11/14] scsi: lpfc: Use irq_set_affinity
Date: Fri, 23 Jul 2021 10:15:12 -0700 [thread overview]
Message-ID: <f1512e42-f2fa-b4e7-4133-4a6066b7ea0d@gmail.com> (raw)
In-Reply-To: <20210720232624.1493424-12-nitesh@redhat.com>
On 7/20/2021 4:26 PM, Nitesh Narayan Lal wrote:
> The driver uses irq_set_affinity_hint to set the affinity for the lpfc
> interrupts to a mask corresponding to the local NUMA node to avoid
> performance overhead on AMD architectures.
>
> However, irq_set_affinity_hint() setting the affinity is an undocumented
> side effect that this function also sets the affinity under the hood.
> To remove this side effect irq_set_affinity_hint() has been marked as
> deprecated and new interfaces have been introduced.
>
> Also, as per the commit dcaa21367938 ("scsi: lpfc: Change default IRQ model
> on AMD architectures"):
> "On AMD architecture, revert the irq allocation to the normal style
> (non-managed) and then use irq_set_affinity_hint() to set the cpu affinity
> and disable user-space rebalancing."
> we don't really need to set the affinity_hint as user-space rebalancing for
> the lpfc interrupts is not desired.
>
> Hence, replace the irq_set_affinity_hint() with irq_set_affinity() which
> only applies the affinity for the interrupts.
>
> Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
> ---
> drivers/scsi/lpfc/lpfc_init.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
Looks good. Thanks
Reviewed-by: James Smart <jsmart2021@gmail.com>
-- james
next prev parent reply other threads:[~2021-07-23 17:15 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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f1512e42-f2fa-b4e7-4133-4a6066b7ea0d@gmail.com \
--to=jsmart2021@gmail.com \
--cc=Tushar.Khandelwal@arm.com \
--cc=_govind@gmx.com \
--cc=abelits@marvell.com \
--cc=ahleihel@redhat.com \
--cc=ahs3@redhat.com \
--cc=ajit.khaparde@broadcom.com \
--cc=akpm@linux-foundation.org \
--cc=baolin.wang7@gmail.com \
--cc=benve@cisco.com \
--cc=bhelgaas@google.com \
--cc=bjorn.andersson@linaro.org \
--cc=borisp@nvidia.com \
--cc=chandrakanth.patil@broadcom.com \
--cc=chris.friesen@windriver.com \
--cc=chunkuang.hu@kernel.org \
--cc=davem@davemloft.net \
--cc=dick.kennedy@broadcom.com \
--cc=emilne@redhat.com \
--cc=faisal.latif@intel.com \
--cc=frederic@kernel.org \
--cc=govind@gmx.com \
--cc=intel-wired-lan@lists.osuosl.org \
--cc=james.smart@broadcom.com \
--cc=jassisinghbrar@gmail.com \
--cc=jbrandeb@kernel.org \
--cc=jejb@linux.ibm.com \
--cc=jesse.brandeburg@intel.com \
--cc=jkc@redhat.com \
--cc=juri.lelli@redhat.com \
--cc=kabel@kernel.org \
--cc=kashyap.desai@broadcom.com \
--cc=kheib@redhat.com \
--cc=kuba@kernel.org \
--cc=leonro@nvidia.com \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=maz@kernel.org \
--cc=mingo@kernel.org \
--cc=minlei@redhat.com \
--cc=mtosatti@redhat.com \
--cc=mustafa.ismail@intel.com \
--cc=netdev@vger.kernel.org \
--cc=nhorman@tuxdriver.com \
--cc=nilal@redhat.com \
--cc=nitesh@redhat.com \
--cc=peterz@infradead.org \
--cc=pjwaskiewicz@gmail.com \
--cc=poros@redhat.com \
--cc=robin.murphy@arm.com \
--cc=rostedt@goodmis.org \
--cc=rppt@linux.vnet.ibm.com \
--cc=saeedm@nvidia.com \
--cc=sassmann@redhat.com \
--cc=sathya.prakash@broadcom.com \
--cc=sfr@canb.auug.org.au \
--cc=shiraz.saleem@intel.com \
--cc=shivasharan.srikanteshwara@broadcom.com \
--cc=somnath.kotur@broadcom.com \
--cc=sreekanth.reddy@broadcom.com \
--cc=sriharsha.basavapatna@broadcom.com \
--cc=stephen@networkplumber.org \
--cc=suganath-prabu.subramani@broadcom.com \
--cc=sumit.saxena@broadcom.com \
--cc=tariqt@nvidia.com \
--cc=tatyana.e.nikolova@intel.com \
--cc=tglx@linutronix.de \
--cc=thenzl@redhat.com \
--cc=viresh.kumar@linaro.org \
--cc=yongqiang.niu@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).