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irqchip/gic-v3: Report that effective affinity is a single target 

The GICv3 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@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: http://lkml.kernel.org/r/20170818083925.10108-5-marc.zyngier@arm.com
This commit is contained in:
Marc Zyngier 2017-08-18 09:39:17 +01:00 committed by Thomas Gleixner
parent 0c9e498286
commit 956ae91ae8
2 changed files with 4 additions and 0 deletions
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1
drivers/irqchip/Kconfig
View File

@ -35,6 +35,7 @@ config ARM_GIC_V3
select MULTI_IRQ_HANDLER select MULTI_IRQ_HANDLER
select IRQ_DOMAIN_HIERARCHY select IRQ_DOMAIN_HIERARCHY
select PARTITION_PERCPU select PARTITION_PERCPU
select GENERIC_IRQ_EFFECTIVE_AFF_MASK
config ARM_GIC_V3_ITS config ARM_GIC_V3_ITS
bool bool

3
drivers/irqchip/irq-gic-v3.c
View File

@ -670,6 +670,8 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
else else
gic_dist_wait_for_rwp(); gic_dist_wait_for_rwp();
irq_data_update_effective_affinity(d, cpumask_of(cpu));
return IRQ_SET_MASK_OK_DONE; return IRQ_SET_MASK_OK_DONE;
} }
#else #else
@ -768,6 +770,7 @@ static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
irq_domain_set_info(d, irq, hw, chip, d->host_data, irq_domain_set_info(d, irq, hw, chip, d->host_data,
handle_fasteoi_irq, NULL, NULL); handle_fasteoi_irq, NULL, NULL);
irq_set_probe(irq); irq_set_probe(irq);
irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(irq)));
} }
/* LPIs */ /* LPIs */
if (hw >= 8192 && hw < GIC_ID_NR) { if (hw >= 8192 && hw < GIC_ID_NR) {