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irqchip/gic-v3: Honor forced affinity setting

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Honor the 'force' flag for set_affinity, by selecting a CPU
from the given mask (which may not be reported "online" by
the cpu_online_mask). Some drivers, like ARM PMU, rely on it.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Suzuki K Poulose 2017-07-04 10:56:35 +01:00 committed by Marc Zyngier
parent 63c16c6eac
commit 65a30f8b30
1 changed files with 6 additions and 1 deletions
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7
drivers/irqchip/irq-gic-v3.c
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@ -640,11 +640,16 @@ static void gic_smp_init(void)
static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
bool force)
{
unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask);
unsigned int cpu;
void __iomem *reg;
int enabled;
u64 val;
if (force)
cpu = cpumask_first(mask_val);
else
cpu = cpumask_any_and(mask_val, cpu_online_mask);
if (cpu >= nr_cpu_ids)
return -EINVAL;