Commit fdd02963 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Move status flag checks to core 



These checks are used by modules and prevent the removal of the export of
irq_to_desc(). Move the accessor into the core.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201210194042.703779349@linutronix.de
parent a313357e

include/linux/irqdesc.h

+5 −12
Original line number Diff line number Diff line
@@ -223,28 +223,21 @@ irq_set_chip_handler_name_locked(struct irq_data *data, struct irq_chip *chip, 
	data->chip = chip;

}



bool irq_check_status_bit(unsigned int irq, unsigned int bitmask);



static inline bool irq_balancing_disabled(unsigned int irq)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;

	return irq_check_status_bit(irq, IRQ_NO_BALANCING_MASK);

}



static inline bool irq_is_percpu(unsigned int irq)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	return desc->status_use_accessors & IRQ_PER_CPU;

	return irq_check_status_bit(irq, IRQ_PER_CPU);

}



static inline bool irq_is_percpu_devid(unsigned int irq)

{

	struct irq_desc *desc;



	desc = irq_to_desc(irq);

	return desc->status_use_accessors & IRQ_PER_CPU_DEVID;

	return irq_check_status_bit(irq, IRQ_PER_CPU_DEVID);

}



static inline void

kernel/irq/manage.c

+20 −0
Original line number Diff line number Diff line
@@ -2839,3 +2839,23 @@ bool irq_has_action(unsigned int irq) 
	return res;

}

EXPORT_SYMBOL_GPL(irq_has_action);



/**

 * irq_check_status_bit - Check whether bits in the irq descriptor status are set

 * @irq:	The linux irq number

 * @bitmask:	The bitmask to evaluate

 *

 * Returns: True if one of the bits in @bitmask is set

 */

bool irq_check_status_bit(unsigned int irq, unsigned int bitmask)

{

	struct irq_desc *desc;

	bool res = false;



	rcu_read_lock();

	desc = irq_to_desc(irq);

	if (desc)

		res = !!(desc->status_use_accessors & bitmask);

	rcu_read_unlock();

	return res;

}