netdev - [PATCH v6 07/14] enic: Use irq_update_affinity

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri,  3 Sep 2021 11:24:23 -0400
From:   Nitesh Narayan Lal <nitesh@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-scsi@...r.kernel.org, netdev@...r.kernel.org,
        davem@...emloft.net, ajit.khaparde@...adcom.com,
        sriharsha.basavapatna@...adcom.com, somnath.kotur@...adcom.com,
        huangguangbin2@...wei.com, huangdaode@...wei.com,
        mtosatti@...hat.com, juri.lelli@...hat.com, frederic@...nel.org,
        abelits@...vell.com, bhelgaas@...gle.com, rostedt@...dmis.org,
        peterz@...radead.org
Cc:     nilal@...hat.com, jesse.brandeburg@...el.com, robin.murphy@....com,
        mingo@...nel.org, jbrandeb@...nel.org, akpm@...uxfoundation.org,
        sfr@...b.auug.org.au, stephen@...workplumber.org,
        rppt@...ux.vnet.ibm.com, chris.friesen@...driver.com,
        maz@...nel.org, nhorman@...driver.com, pjwaskiewicz@...il.com,
        sassmann@...hat.com, thenzl@...hat.com, james.smart@...adcom.com,
        dick.kennedy@...adcom.com, jkc@...hat.com, faisal.latif@...el.com,
        shiraz.saleem@...el.com, tariqt@...dia.com, ahleihel@...hat.com,
        kheib@...hat.com, borisp@...dia.com, saeedm@...dia.com,
        tatyana.e.nikolova@...el.com, mustafa.ismail@...el.com,
        ahs3@...hat.com, leonro@...dia.com,
        chandrakanth.patil@...adcom.com, bjorn.andersson@...aro.org,
        chunkuang.hu@...nel.org, yongqiang.niu@...iatek.com,
        baolin.wang7@...il.com, poros@...hat.com, minlei@...hat.com,
        emilne@...hat.com, jejb@...ux.ibm.com, martin.petersen@...cle.com,
        kabel@...nel.org, viresh.kumar@...aro.org, kuba@...nel.org,
        kashyap.desai@...adcom.com, sumit.saxena@...adcom.com,
        shivasharan.srikanteshwara@...adcom.com,
        sathya.prakash@...adcom.com, sreekanth.reddy@...adcom.com,
        suganath-prabu.subramani@...adcom.com, tglx@...utronix.de,
        ley.foon.tan@...el.com, jbrunet@...libre.com,
        johannes@...solutions.net, snelson@...sando.io,
        lewis.hanly@...rochip.com, benve@...co.com, _govind@....com,
        jassisinghbrar@...il.com
Subject: [PATCH v6 07/14] enic: 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@...hat.com>
Reviewed-by: Christian Benvenuti <benve@...co.com>
---
 drivers/net/ethernet/cisco/enic/enic_main.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index d0a8f7106958..97eb5bd62855 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -150,10 +150,10 @@ static void enic_set_affinity_hint(struct enic *enic)
 		    !cpumask_available(enic->msix[i].affinity_mask) ||
 		    cpumask_empty(enic->msix[i].affinity_mask))
 			continue;
-		err = irq_set_affinity_hint(enic->msix_entry[i].vector,
-					    enic->msix[i].affinity_mask);
+		err = irq_update_affinity_hint(enic->msix_entry[i].vector,
+					       enic->msix[i].affinity_mask);
 		if (err)
-			netdev_warn(enic->netdev, "irq_set_affinity_hint failed, err %d\n",
+			netdev_warn(enic->netdev, "irq_update_affinity_hint failed, err %d\n",
 				    err);
 	}
 
@@ -173,7 +173,7 @@ static void enic_unset_affinity_hint(struct enic *enic)
 	int i;
 
 	for (i = 0; i < enic->intr_count; i++)
-		irq_set_affinity_hint(enic->msix_entry[i].vector, NULL);
+		irq_update_affinity_hint(enic->msix_entry[i].vector, NULL);
 }
 
 static int enic_udp_tunnel_set_port(struct net_device *netdev,
-- 
2.27.0