linux-kernel - [PATCH 07/12] irqchip/bcm-6345-l1: Report that effective affinity is a single target

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Date:   Tue, 15 Aug 2017 12:34:42 +0100
From:   Marc Zyngier <marc.zyngier@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Wei Xu <xuwei5@...ilicon.com>,
        James Hogan <james.hogan@...tec.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...e-electrons.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Kevin Cernekee <cernekee@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        Paul Burton <paul.burton@...tec.com>,
        Matt Redfearn <matt.redfearn@...tec.com>
Subject: [PATCH 07/12] 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>
---
 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 cd688777553c..b36a55d6833e 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 daa4ae89e466..43f8abe40878 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;
 }
 
-- 
2.11.0