linux-kernel - [tip:irq/core] irqchip/armada-370-xp: Report that effective affinity is a single target

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Date:   Fri, 18 Aug 2017 01:59:37 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     f.fainelli@...il.com, chris@...kel.net,
        sebastian.hesselbarth@...il.com, matt.redfearn@...tec.com,
        mingo@...nel.org, gregory.clement@...e-electrons.com,
        james.hogan@...tec.com, cernekee@...il.com, hpa@...or.com,
        jcmvbkbc@...il.com, xuwei5@...ilicon.com,
        linux-kernel@...r.kernel.org, tglx@...utronix.de, andrew@...n.ch,
        paul.burton@...tec.com, marc.zyngier@....com, jason@...edaemon.net
Subject: [tip:irq/core] irqchip/armada-370-xp: Report that effective
 affinity is a single target

Commit-ID:  e31793a3e51137a910b827b18e532d6c1fa54514
Gitweb:     http://git.kernel.org/tip/e31793a3e51137a910b827b18e532d6c1fa54514
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 18 Aug 2017 09:39:19 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 18 Aug 2017 10:54:41 +0200

irqchip/armada-370-xp: Report that effective affinity is a single target

The Armada 370 XP 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/20170818083925.10108-7-marc.zyngier@arm.com

---
 drivers/irqchip/Kconfig             | 1 +
 drivers/irqchip/irq-armada-370-xp.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index ce99c1e..cd68877 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -66,6 +66,7 @@ config ARMADA_370_XP_IRQ
 	bool
 	select GENERIC_IRQ_CHIP
 	select PCI_MSI if PCI
+	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 
 config ALPINE_MSI
 	bool
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index b207b2c..eb81567 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -330,6 +330,8 @@ static int armada_xp_set_affinity(struct irq_data *d,
 	writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
 	raw_spin_unlock(&irq_controller_lock);
 
+	irq_data_update_effective_affinity(d, cpumask_of(cpu));
+
 	return IRQ_SET_MASK_OK;
 }
 #endif
@@ -363,6 +365,7 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
 	} else {
 		irq_set_chip_and_handler(virq, &armada_370_xp_irq_chip,
 					handle_level_irq);
+		irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq)));
 	}
 	irq_set_probe(virq);