linux-kernel - [tip:irq/core] irqchip/bcm-6345-l1: Report that effective affinity is a single target

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, 18 Aug 2017 02:00:00 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     f.fainelli@...il.com, linux-kernel@...r.kernel.org,
        james.hogan@...tec.com, matt.redfearn@...tec.com,
        paul.burton@...tec.com, marc.zyngier@....com, cernekee@...il.com,
        mingo@...nel.org, andrew@...n.ch, sebastian.hesselbarth@...il.com,
        jcmvbkbc@...il.com, gregory.clement@...e-electrons.com,
        chris@...kel.net, xuwei5@...ilicon.com, hpa@...or.com,
        jason@...edaemon.net, tglx@...utronix.de
Subject: [tip:irq/core] irqchip/bcm-6345-l1: Report that effective affinity
 is a single target

Commit-ID:  d0ed5e8e14e95fb3b70885be5ae35d0736866f72
Gitweb:     http://git.kernel.org/tip/d0ed5e8e14e95fb3b70885be5ae35d0736866f72
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 18 Aug 2017 09:39:20 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 18 Aug 2017 10:54:41 +0200

irqchip/bcm-6345-l1: Report that effective affinity is a single target

The BCM 6345-L1 driver only targets a single CPU at a time, even if
the notional affinity is wider. Let's inform the core code
about this.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: James Hogan <james.hogan@...tec.com>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Paul Burton <paul.burton@...tec.com>
Cc: Chris Zankel <chris@...kel.net>
Cc: Kevin Cernekee <cernekee@...il.com>
Cc: Wei Xu <xuwei5@...ilicon.com>
Cc: Max Filippov <jcmvbkbc@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>
Cc: Gregory Clement <gregory.clement@...e-electrons.com>
Cc: Matt Redfearn <matt.redfearn@...tec.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Link: http://lkml.kernel.org/r/20170818083925.10108-8-marc.zyngier@arm.com

---
 drivers/irqchip/Kconfig          | 1 +
 drivers/irqchip/irq-bcm6345-l1.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index cd68877..b36a55d 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -96,6 +96,7 @@ config BCM6345_L1_IRQ
 	bool
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN
+	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 
 config BCM7038_L1_IRQ
 	bool
diff --git a/drivers/irqchip/irq-bcm6345-l1.c b/drivers/irqchip/irq-bcm6345-l1.c
index daa4ae8..43f8abe 100644
--- a/drivers/irqchip/irq-bcm6345-l1.c
+++ b/drivers/irqchip/irq-bcm6345-l1.c
@@ -231,6 +231,8 @@ static int bcm6345_l1_set_affinity(struct irq_data *d,
 	}
 	raw_spin_unlock_irqrestore(&intc->lock, flags);
 
+	irq_data_update_effective_affinity(d, cpumask_of(new_cpu));
+
 	return IRQ_SET_MASK_OK_NOCOPY;
 }
 
@@ -291,6 +293,7 @@ static int bcm6345_l1_map(struct irq_domain *d, unsigned int virq,
 	irq_set_chip_and_handler(virq,
 		&bcm6345_l1_irq_chip, handle_percpu_irq);
 	irq_set_chip_data(virq, d->host_data);
+	irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq)));
 	return 0;
 }