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Commit 65a30f8b authored by Suzuki K Poulose's avatar Suzuki K Poulose Committed by Marc Zyngier
Browse files

irqchip/gic-v3: Honor forced affinity setting 



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: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 63c16c6e

drivers/irqchip/irq-gic-v3.c

+6 −1
Original line number Diff line number Diff line
@@ -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;