linux-kernel - [tip:irq/core] irqchip/hip04: Report that effective affinity is a single target

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Date:   Fri, 18 Aug 2017 02:01:10 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     chris@...kel.net, linux-kernel@...r.kernel.org,
        sebastian.hesselbarth@...il.com, andrew@...n.ch,
        paul.burton@...tec.com, marc.zyngier@....com,
        matt.redfearn@...tec.com, f.fainelli@...il.com, jcmvbkbc@...il.com,
        gregory.clement@...e-electrons.com, tglx@...utronix.de,
        xuwei5@...ilicon.com, jason@...edaemon.net, mingo@...nel.org,
        cernekee@...il.com, james.hogan@...tec.com, hpa@...or.com
Subject: [tip:irq/core] irqchip/hip04: Report that effective affinity is a
 single target

Commit-ID:  79a0d4d8f1ae9568a952c8e5928ee81b30c8df11
Gitweb:     http://git.kernel.org/tip/79a0d4d8f1ae9568a952c8e5928ee81b30c8df11
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 18 Aug 2017 09:39:23 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 18 Aug 2017 10:54:42 +0200

irqchip/hip04: Report that effective affinity is a single target

The HIP04 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/20170818083925.10108-11-marc.zyngier@arm.com

---
 arch/arm/mach-hisi/Kconfig  | 1 +
 drivers/irqchip/irq-hip04.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm/mach-hisi/Kconfig b/arch/arm/mach-hisi/Kconfig
index a3b091a..65a048f 100644
--- a/arch/arm/mach-hisi/Kconfig
+++ b/arch/arm/mach-hisi/Kconfig
@@ -39,6 +39,7 @@ config ARCH_HIP04
 	select HAVE_ARM_ARCH_TIMER
 	select MCPM if SMP
 	select MCPM_QUAD_CLUSTER if SMP
+	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 	help
 	  Support for Hisilicon HiP04 SoC family
 
diff --git a/drivers/irqchip/irq-hip04.c b/drivers/irqchip/irq-hip04.c
index c1b4ee9..5b4fd2f 100644
--- a/drivers/irqchip/irq-hip04.c
+++ b/drivers/irqchip/irq-hip04.c
@@ -165,6 +165,8 @@ static int hip04_irq_set_affinity(struct irq_data *d,
 	writel_relaxed(val | bit, reg);
 	raw_spin_unlock(&irq_controller_lock);
 
+	irq_data_update_effective_affinity(d, cpumask_of(cpu));
+
 	return IRQ_SET_MASK_OK;
 }
 #endif
@@ -312,6 +314,7 @@ static int hip04_irq_domain_map(struct irq_domain *d, unsigned int irq,
 		irq_set_chip_and_handler(irq, &hip04_irq_chip,
 					 handle_fasteoi_irq);
 		irq_set_probe(irq);
+		irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(irq)));
 	}
 	irq_set_chip_data(irq, d->host_data);
 	return 0;