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

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Date:   Fri, 18 Aug 2017 02:00:47 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org,
        gregory.clement@...e-electrons.com, james.hogan@...tec.com,
        tglx@...utronix.de, xuwei5@...ilicon.com, matt.redfearn@...tec.com,
        paul.burton@...tec.com, f.fainelli@...il.com, andrew@...n.ch,
        hpa@...or.com, jcmvbkbc@...il.com, chris@...kel.net,
        cernekee@...il.com, jason@...edaemon.net,
        sebastian.hesselbarth@...il.com, marc.zyngier@....com
Subject: [tip:irq/core] irqchip/metag-ext: Report that effective affinity is
 a single target

Commit-ID:  64b5aaad3c743be4f866cfe1ef2c903582e389a3
Gitweb:     http://git.kernel.org/tip/64b5aaad3c743be4f866cfe1ef2c903582e389a3
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 18 Aug 2017 09:39:22 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 18 Aug 2017 10:54:42 +0200

irqchip/metag-ext: Report that effective affinity is a single target

The metag-ext 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/20170818083925.10108-10-marc.zyngier@arm.com

---
 arch/metag/Kconfig              | 1 +
 drivers/irqchip/irq-metag-ext.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig
index 5b7a45d..7d8b322 100644
--- a/arch/metag/Kconfig
+++ b/arch/metag/Kconfig
@@ -26,6 +26,7 @@ config METAG
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_UNDERSCORE_SYMBOL_PREFIX
 	select IRQ_DOMAIN
+	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 	select MODULES_USE_ELF_RELA
 	select OF
 	select OF_EARLY_FLATTREE
diff --git a/drivers/irqchip/irq-metag-ext.c b/drivers/irqchip/irq-metag-ext.c
index 0cdd923..be7216b 100644
--- a/drivers/irqchip/irq-metag-ext.c
+++ b/drivers/irqchip/irq-metag-ext.c
@@ -518,6 +518,8 @@ static int meta_intc_set_affinity(struct irq_data *data,
 
 	metag_out32(TBI_TRIG_VEC(TBID_SIGNUM_TR2(thread)), vec_addr);
 
+	irq_data_update_effective_affinity(data, cpumask_of(cpu));
+
 	return 0;
 }
 #else
@@ -578,6 +580,8 @@ static int meta_intc_map(struct irq_domain *d, unsigned int irq,
 	else
 		irq_set_chip_and_handler(irq, &meta_intc_edge_chip,
 					 handle_edge_irq);
+
+	irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(irq)));
 	return 0;
 }